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UNIVERSITY OF HOXG KONGLIBRARY

Hong Kong CollectionGift from

Books Registration Ordinance

CODE OF PRACTICE

OVERALL THERMAL TRANSFER VALUE

IN BUILDINGS

1995

HONG KONG

CODE OF PRACTICE

FOR

OVERALL THERMAL TRANSFER VALUE

IN BUILDINGS

1995

BUILDING AUTHORITY

HONG KONG

April 1995

...IJL'LJ

Foreword

A consultancy study in 1991 that if the of a building was

constructed to a suitable overall thermal transfer value (OTTV),

from air-conditioning and thus the emission of greenhouse

could be reduced. The Government's aim is to establish a

energy code to control the total energy consumption of a building, of which OTTV

controls would form a part. As a first step, legislative control over OTTV has

introduced in the Building (Energy Efficiency) Regulation (Cap. 123 sub. leg.).

This Code of Practice provides technical guidance for authorized

persons, registered structural engineers and other persons responsible for the design

and construction of buildings. Compliance with the provisions in this Code may be

deemed to satisfy the requirement of a suitable OTTV for a building under the Building

(Energy Efficiency) Regulation.

This Code will be regularly reviewed. The Building Authority welcomes

suggestions for improving this Code or for enhancing the energy efficiency of buildings

in general.

Other options for achieving equivalent and better performance standards

are available and will of course be considered in isolation or in combination for the

purpose of establishing acceptability.

CONTENTS

Paragraph Page

1. General Principles of Control of Overall Thermal Transfer 1Value

2. Definitions 2

3. Suitable OTTV 3

4. Principles of OTTV Calculations 4

5. OTTV of External Walls 5

6. OTTV of Roofs 5

7. Calculation of Component Coefficients and Parameters of 6OTTV

8. Windows and Doors 17

9. Submission of Information 17

Schedule - Standard Forms

Appendix - A sample of OTTV calculations for a typical commercial building

I. General Principles of of

1.1 For the design and planning of energy - efficient is

developing a comprehensive energy code to cover alia and air-conditioning.

Overall thermal transfer value (OTTV) is one of conservation*

General approach

1.2 An OTTV is a measure of the energy consumption of a building envelope.

Its formulation allows authorized persons, registered structural engineers and other

persons responsible for the design and construction of buildings freedom to innovate and

vary important envelope components such as type of glazing, window size, external

shading to windows, wall colour and wall type to meet the maximum OTTV criteria.

Any measure to improve energy efficiency or to save energy should be considered in

planning a building.

1.3 Siting a building to avoid extensive glazed facades with a southerly aspect or

introducing shades to window areas can reduce solar heat gain. Appropriate choice of

windows with a low thermal transmittance characteristic will also minimize solar heat

transmission.

1.4 Artificial lighting consumes electricity and creates heat. This increases the

cooling load of a building and in turn increases energy consumption. Consequently,

when determining the size and location of windows as well as choice of glass in the

envelope of a building, efforts should be made to provide as much natural lighting into

the building as possible. For example, with glazing, the visible lighting transmittance

should be acknowledged in addition to its thermal transmittance properties; daylight can

supplement artificial lighting and consequently reduce the cooling load.

1.5 Other measures include more extensive use of energy-efficient building

services equipment and appliances, e.g. energy-saving lamps, low-loss luminaries and

high-efficiency air-conditioning and more sophisticated building services control systems.

Scope

1.6 The provisions in this Code apply to all hotels and commercial buildings as

defined in the Building (Energy Efficiency) Regulation. They aim at reducing heat

transfer through the building envelope and thus the electricity required for air-

conditioning.

1.7 The concept of OTTV is based on the assumption that the envelope of a

building is completely enclosed.

1.8 In the OTTV formulation, the following factors are not addressed or allowed

tor:

(a) Internal shading devices, such as draperies and blinds.

(b) Solar reflection or shading from adjacent buildings.

2, Definitions

In this Code, unless otherwise stated, words and expressions have the

meaning attributed to them by the Building (Energy Efficiency) Regulation. It should

also be noted that:

''building tower11 means that part of a building above the podium of the building;

"fenestration* means any glazed aperture in the building envelope;

"lightweir means a vertical shaft of open air enclosed on all sides by parts of a building;

''opaque* wall or roof means that solid part of the wall or roof which is not part of the

fenestration;

"podium" means that part of a building which,

(a) if having a site coverage exceeding the permitted percentage site coverage,

is -

(i) within 15 m above ground level as permitted under Building (Planning)

Regulation 20(3); or

(ii) within such height as is permitted by the Building Authority by way

of a modification of that regulation granted under section 42 of the

Buildings Ordinance; and

(b) if having a site coverage within the permitted percentage site coverage, is

within 15 m above ground level.

"refuge floor" has the meaning assigned to it in the Code of Practice for Means of Escape

and means a protected floor that serves as a refuge for the occupants of the building

to assemble in case of fire.

3. Suitable OTTV

3.1 The external walls and roofs of a building to which the Building (Energy

Efficiency) Regulation applies should be designed and constructed to have the following

OTTV :

(a) in the case of a building tower; the OTTV should not exceed 35 W/m?; and

(b) in the case of a podium; the OTTV should not exceed m W/irfL

3.2 The maximum OTTV specified in paragraph 3.1 should apply to the overall

building envelope, i.e. all the external walls and roofs, as the case may be, in average

and do not apply to the individual wall or roof.

3.3 The OTTV of the external walls and roofs of a building tower or podium

should be assessed In accordance with methods set out in this Code. A sample of OTTV

calculations for a typical commercial building is set out in Appendix for illustration.

4. Principles of OTTV Calculations

External walls and roofs not included in OTTV calculations

4.1 All external walls and roofs of a building should be included in OTTV

calculations except -

(a) an external wall of a refuge floor;

(b) an external wall or roof of a carparking floor;

(c) an external wall of a lightwell having an area on plan not exceeding 21 m2; and

(d) any wall on any roof.

Party wall

4.2 An external wall of a building which is a party wall should-be included in

OTTV calculations whether an adjoining building exists or not. Shading to the party wall

from adjoining buildings should not be considered in calculating the OTTV.

5. OTTV of

The OTTV of the external walls of a building tower or a podium, OTTVW> be

calculated using the following formula -

(Aw x U x a x TDEQw) + (Afw x SC x x SF)OTTVW =

Aow

where

Aw = Area of opaque wall, m2

U = Thermal transmittance of opaque wall, W/m2°C (See 7.1)

a = Absorptivity of the opaque wall (Table 4)

TDgQw = Equivalent temperature difference for wall, °C (Table 5)

Afw = Area of fenestration in wall, m2

SC = Shading coefficient of fenestration in wall (See para 7.5)

ESM = External shading multiplier (Table 6 and 7)

SF = Solar factor for the vertical surface, W/m2 (Table 8)

Aow = Gross area of external walls, i.e. Aw + Afw, m2

6. OTTV of Roofs

The OTTV of the roofs of a building tower or a podium, OTTVr> should be calculatedusing the following formula :-

(Ar x U x a x TDEQr) + (Afr x SC x SF)OTTVr =

Aor

Where

Ar = Area of opaque roof, m2

U = Thermal transmittance of opaque roof, W/m2°C (See para 7.1)

a = Absorptivity of the opaque roof (Table 4)

TDEQr= Equivalent temperature difference for roof, °C (Table 9)

Afr = Area of fenestration in roof, m2

SC = Shading coefficient of fenestration in roof (See para 7.5)

SF = Solar factor for horizontal surface, W/m2 (Table 8)

= Gross area of roof, i.e. Ar + Afr, m2

6 -

7. Calculation of Component Coefficients and Parameters of OTTV

Thermal transmittance of opaque construction (U)

7.1 Opaque walls and roofs usually involve a composite of materials. Thethermal transmittance of an opaque wall or roof should be derived by the followingformula :

1U = ;

xi X2 xn

ki k2 kn

x = Thickness of building material of the wall or roof or part thereof, m

k = Thermal conductivity of the building material, W/m°C(Table 1)

Rj = Surface film resistance of internal surface of the wall or roof, m2°C/W(Table 2)

RO = Surface film resistance of external surface of the wall or roof, m2°C/W(Table 2)

Ra = Air space resistance, m2°C/W (Table 3)

Component coefficients and parameters of thermal transmittance

7,2 The component coefficients and parameters used in calculating the thermaltransmittance of opaque construction should be assessed as follows :

(a) Thermal conductivity of building materials (k)

The thermal conductivity of the building materials of walls and roofs should beobtained from Table 1.

Table 1 Thermal Conductivity of Building Materials

Material

Asphalt, mastic with 20% grit

Boardsa) corkb) hardboard high densityc) mineral fibred) plasterboard

Brick (common)

Concretea) normal weight aggregateb) lightweight aggregatec) flat roof tiles or slabs

Glass

Mosaic tile cladding

Insulating materialsa) glass fibre mat or quiltb) mineral wool feltc) polystyrene expandedd) polyurethane foam

Metalsa) aluminium alloy typicalb) copper commercialc) steel, carbon

Plaster/rendera) gypsumb) gypsum, sand aggregatec) cement/sand

Screedinga) cement sandb) terrazzo

Stonea) graniteb) marble

Densitykg/m3

2350

1451010265950

1900

240013002100

2500

2500

32502530

280089007800

112015701860

18602435

26502500

ThermalConductivity (k)

W/m°C

1.15

0.0420.1440.0530.16

0.95

2.160.441.10

1.05

1.50

0.0350.0390.0340.026

16020050

0.380.530.72

0.721.59

2.92.0

Note :

If other materials are used the thermal conductivity values shouldbe subject to the acceptance of the Building Authority and thesource of the information from which the thermal conductivityvalues are obtained should be submitted for his consideration forthis purpose.

(b) Surface film resistance for walls and roofs (Rj, R0)

The surface film resistance for walls and roofs should be obtained from Table 2.

Table 2 Surface Film Resistance for Walls and Roofs

Type of surfaceSurface filmresistance

m2°C/W

Surface film resistance for walls

1. Internal surface (Rj)

(a) Absorptivity (0.5 and above)(b) Absorptivity (below 0.5)

2, External surface

0.1200.299

0.044

Surface film resistance for roofs

1. Internal surface (Rj)

(a) Absorptivity (0.5 and above)(i) Flat roof

(ii) Sloped roof 22%°(iii) Sloped roof 45°

(b) Absorptivity (below 0.5)(i) Flat roof

(ii) Sloped roof 22%°(iii) Sloped roof 45°

2. External surface (R0)

0.1620.1480.133

0.8010.5950.391

0.055

(c) Air space resistance for walls and (Ra)

The air space resistance for walls and be 3.

Table 3 Air for and

Type of air space

Air space resistancefor walls

Vertical air space (heat flowshorizontally)

(a) Absorptivity (0.5 andabove)

(b) Absorptivity (below 0.5)

Air space resistancefor roofs

Horizontal or sloping air space(heat flows downward)

(a) Absorptivity (0.5 andabove)

(i) horizontal air space(ii) sloped air space 11lh.°

(iii) sloped air space 45°

(b) Absorptivity (below 0.5)

(i) horizontal air space(ii) sloped air space 22V4°

(iii) sloped air space 45°

Air space resistance (Ra) m2°C/W

5mm

0.110

0.250

0.1100.1100.110

0.2500.2500.250

10mm

0.123

0.359

0.1230.1230.123

0.3570.3570.357

20mm

0.148

0.578

0.1480.1480.148

0.5720.5710.570

50mm

0.153

0.589

0.1580.1540.152

0.8910.7680.644

75mm

0.156

0.597

0.1660.1600.155

1.1570.9310.706

100mm

0.160

0.606

0.1740.1650.158

1.4231.0950.768

Absorptivity (a)

73 Energy simulation studies for Hong Kong have shown that the externalsurface and colour of walls and roofs, and therefore their absorptivity, have a significanteffect on chiller energy used. This should be included in the heat gain calculation as amultiplication constant to the equivalent temperature difference. The absorptivity forwall and roof surfaces should be obtained from Table 4.

10

Table 4 Absorptivity for wall and roof surfaces

Material

Black glass

Black concrete

Stafford blue brick

Red brick

Bituminous felt

Blue grey slate

Roofing, green

Brown concrete

Asphalt pavement,weathered

'Wood, smooth

Uncoloured concrete

White marble

White mosaic tiles

Light buff brick

•Built-up roof, white

Bituminous felt,aluminized

Gravel

White on galvanized iron

White glazed brick

Polished aluminiumreflector sheet

Aluminized mylar film

\ Tinned surface

Absorptivitya

1.0

0.91

0.89

0.88

0.88

0.87

0.86

0.85

0.82

0.78

0.65

0.58

0.58.

0.55

0.50

0.40

0.29

0.26

0.25

0.12

0.10

0.05

Paint

Optical flat black paint

Flat black paint

Black lacquer

Dark grey paint

Dark blue lacquer

Black oil paint

Dark olive drab paint

Azure blue or dark greenlacquer

Dark brown paint

Dark blue-grey paint

Medium brown paint

Medium light brown paint

Brown or green lacquer

Medium rust paint

Light grey oil paint

Red oil paint

Medium dull green paint

Medium orange paint

Medium yellow paint

Medium blue paint

Medium kelly green paint

Lighy*reen paint

Aluminium paint

White semi-gloss paint

White gloss paint

Silver paint

White lacquer

Laboratory vapourdeposited coatiiigs

Absorptivitya

0.98

0.95

0.92

0.91

0.91

0.90

0.89

0.88

0.88

0.88

0.84

0.80

0.79

0.78

0.75

0.74

0.59

0.58

0.57

0.51

0.51

0.47

0.40

0.30

0.25

0.25

0.21

0.02

Note: - _ • ' . . . - . ; , . .

Absorptivity for other materials or surfaces should be subject to theaottp&pre of the Building Authority and the source of the informationfrom wMcfe the ajb^rptivity values are obtained should be submitted forhis conslderatioiL

11

Equivalent temperature difference for walk

7-4 Energy simulation studies for Hong Kong have indicated that thermal mass

affects the total heat flow through walls sufficiently to warrant its inclusion in the

formulation of an OTTV. The equivalent temperature difference for walls should take

into account the wall mass, density and orientation. Heavyweight construction gives a

better performance than lightweight construction because it resists the passage of heat.

The equivalent temperature difference for walls should be obtained from Table 5.

Table 5 Equivalent Temperature Difference for Walls

Orientation

N

NNE

NE

ENE

E

ESE

SE

SSE

S

SSW

SW

WSW

W

WNW

NW

NNW

Density of wall construction

less than

22kg/m2

3.70

4.65

5.60

6.55

7.50

7.05

6.60

6.15

5.70

6.15

6.60

6.55

6.50

5.80

5.10

4.40

23-199

kg/m2

3.38

4.21

5.03

5.86

6.68

6.26

5.85

5.43

5.01

5.42

5.82

5.81

5.79

5.19

4.59

3.98

200-379

kg/m2

2.72

3.30

3.86

4.44

5.01

4.65

4.30

3.95

3.60

3.92

4.23

4.29

4.35

3.94

3.54

3.13

380-569

kg/m2

2.05

2.36

2.67

2.98

3.28

3.00

2.71

2.43

2.15

2.37

2.59

2.73

2.86

2.66

2.45

2.25

570 kg/m2

or greater

1.70

1.88

2.05

2.23

2.40

2.15

1.90

1.65

1.40

1.58

1.75

1.93

2.10

2.00

1.90

1.80

12

Shading coefficient of fenestration (SC)

7.5 The shading coefficient of fenestration is the ratio of the solar heat gainthrough a particular type of glass under a specific set of conditions to the solar heat gainthrough double strength sheet clear glass under the same conditions. Allowances forHong Kong's latitude and solar effects have been taken into account in the solar factorand therefore the shading coefficient of glass published by glass manufacturers in HongKong or overseas can be used without modification provided that" the calculations havebeen based on a normal angle of incidence.

External shading multiplier (ESM)

7.6 Shading of windows is of paramount importance in reducing solar heat gainto the building. This shading can be provided by projections over the window, at theside of the window, or a combination of both. For the purpose of simplicity in OTTVcalculations this shading effect is taken into account as an external shading multiplierwhich should be assessed as follows :

(a) Overhang projections to windows

The external shading multiplier for overhang projections to windows should beobtained from Table 6 according to the overhang projection factor (OFF) and theorientation of the window. The OFF should be calculated as follows :

OVERHANG PROJECTION

WINDOW

/ A B

OFF «B

13

Table 6 External Shading Multiplier for Overhang ProjectionsWindows

OFF

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0.55

0.60

0.65

0.70

0.75

0.80

0.85

0.90

0.95

1.00

ESM

N

1.000

0.975

0.951

0.928

0.905

0.883

0.861

0.840

0.820

0.800

0.781

0.762

0.744

0.726

0.710

0.693

0.678

0.663

0.648

0.634

0.621

NE/NW

1.000

0.969

0.939

0.909

0.880

0.853

0.826

0.800

0.774

0.750

0.726

0.704

0.682

0.661

0.641

0.621

0.603

0.585

0.568

0.552

0.537

S/E/W

1.000

0.962

0.926

0.890

0.856

0.823

0.790

0.759

0.729

0.700

0.672

0.645

0.620

0.595

0.572

0.549

0.528

0.507

0.488

0.470

0.453

SE/SW

1.000

0.962

0.926

0.890

0.856

0.823

0.790

0.759

0.729

0.700

0.672

0.645

0.620

0.595

0.572

0.549

0.528

0.507

0.488

0.470

0.453

Notes :

(i) Should the OFF value fall in between Increments,adopt the multiplier related to the next largerOFF value.

(ii) OFF values above 1.0 are considered to producetoo great an error in estimation.

(iii) ESM for South, East and West orientations arecombined since the figures are very similar.

14

(b) Sidefin projections to windows

The external shading multiplier for sidefin projections to windows should beobtained from Table 7 according to the sidefin projection factor (SPF) and theorientation of the window. The SPF should be calculated as follows :

WINDOW

SIDEFINPROJECTION

-*- -h

SPF=g

Table 7 External Shading Multiplier for SidefinProjections to Windows

SPF

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

ESM

N

1.000

0.955

0.911

0.869

0.828

0.789

0.751

0.714

NE

1.000

0.964

0.929

0.896

0.863

0.832

0.801

0.772

E

1.000

0.974

0.948

0.923

0.898

0.875

0.852

0.829

SE

1.000

0.968

0.937

0.906

0.877

0.848

0.821

0.794

S

1.000

0.962

0.925

0.890

0.855

0.822

0.790

0.759

SW

1.000

0.968

0.936

0.906

0.876

0.848

0.820

0.793

W

1.000

0.968

0.947

0.922

0.897

0.873

0.850

0.828

NW

1.000

0.964

0.929

0.895

0.863

0.831

0.800

0.771

(Cont'd)

15

Table 7 forProjections to

SPF

0.40

0.45

0.50

0.55

0.60

0.65

0.70

0.75

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

1.25

1.30

1.35

1.40

1.45

1.50

N

0.679

0.645

0.613

0.582

0.553

0.525

0.499

0.473

0.450

0.428

0.407

0.388

0.370

0.354

0.339

0.325

0.313

0.302

0.293

0.286

0.279

0.274

0.271

ESM

NE

0.743

0.716

0.690

0.664

0.640

0.617

0.595

0.574

0.554

0.535

0.517

0.500

0.484

0.470

0.456

0.444

0.432

0.422

0.412

0.404

0.396

0.390

0.385

E

0.807

0.786

0.766

0.746

0.727

0.709

0.691

0.674

0.658

0.642

0.627

0.613

0.599

0.586

0.574

0.562

0.551

0.541

0.531

0.522

0.514

0.506

0.499

SE

0.768

0.743

0.719

0.696

0.674

0.653

0.632

0.613

0.594

0.577

0.560

0.544

0.529

0.515

0.502

0.490

0.478

0.468

0.458

0.450

0.442

0.435

0.429

S

0.729

0.700

0.673

0.646

0.621

0.596

0.573

0.551

0.531

0.511

0.493

0.475

0.459

0.444

0.430

0.417

0.406

0.395

0.386

0.377

0.370

0.364

0.359

SW

0.767

0.743

0.719

0.696

0.674

0.653

0.633

0.613

0.595

0.578

0.561

0.546

0.531

0.518

0.505

0.494

0.483

0.473

0.464

0.456

0.449

0.443

0.438

W

0.806

0.785

0.765

0.746

0.727

0.709

0.692

0.675

0.660

0.645

0.630

0.617

0.604

0.592

0.581

0.570

0.560

0.551

0.543

0.535

0.528

0.522

0.517

NW

0.742

0.715

0.689

0.664

0.640

0.617

0.595

0.574

0.555

0.536

0.519

0.502

0.487

0.473

0.460

0.448

0.437

0.427

0.418

0.410

0.404

0.398

0.394

Notes :

(i) SPF values above 1.5 are considered to produce toogreat an error in estimation.

(ii) Should the SPF value fall in between increments, adoptthe multiplier related to the next larger SPF value.

16

(c) Combination of overhang and sidefin projections

For windows with both overhang and sidefin projections each external

shading multiplier should be calculated separately as described in (a)

and (b) and the smaller of the two values obtained should be used as the

external shading multiplier in the OTTV calculations.

Solar factor (SF)

7.7 The solar factor for vertical surfaces at various orientations and

that for horizontal surfaces should be obtained from Table 8. The solar factors

have been calculated for the Hong Kong climate. Any sloping or angled wall or

roof can be resolved into vertical and horizontal components. The vertical

components of the sloping or angled wall or roof can be treated as a vertical

surface with a solar factor at that respective orientation; whereas the horizontal

component can be treated as a horizontal surface.

Table 8 Solar Factor

orientation

SF for verticalsurface

orientation

SF for verticalsurface

SF forhorizontalsurface

N

104

NNE

121

NE

138

ENE

153

E

168

ESE

183

SE

197

SSE

194

S

191

SSW

197

sw202

WSW

189

W

175

WNW

157

NW

138

NNW

121

264

Equivalent temperature difference for roofs (TDgQr)

7.8 The equivalent temperature difference for roofs should take intoaccount the roof mass and density and should be obtained from Table 9.

17

Table 9 Equivalent Temperature Difference for Roofs

Density ofroofconstruction

TDEQr

less than22 kg/m2

18.60

23-199kg/m2

16.88

200-379kg/m2

13.37

380-569kg/m2

9.75

570 kg/m2

or above

7.90

Windows and doors

Buildings should not have unenclosed doorways and entrances. For

commercial buildings where heavy traffic of people is anticipated, self-closing doors

without restrainers, revolving doors or other similar means of minimizing heat gain

should be employed. Careful attention should also be paid to the sealing of windows to

guard against leakage during service.

Submission of Information

9.1 Information and calculations required by the Building Authority are specified

in the Building (Energy Efficiency) Regulation. Simplified version of OTTV calculations

can be included in the first submission of building plans, provided that detailed

calculations have to be submitted before consent to commence works will be granted.

The following information and calculations should be submitted on the standard forms

set out in the schedule to this Code :

(a) Calculation of 'IT value of composite wall and roof and details of other component

coefficients and parameters of OTTV on Form OTTV 1.

(b) Window and rooflight schedule on Form OTTV 2.

(c) OTTV calculations on Form OTTV 3 and Form OTTV 4.

9.2 OTTV calculations should be made to two places of decimals.

of S •ta.nclaxrcl I?1 oar mas

OTTV X

Foirm OTTV 2

OTTV 3

OTTV 4

Building (Energy Efficiency) RegulationForm OTTV 1

Calculation of 'IT Value of Composite Wall/Roofand Details of Other Values

Sheet No. A BD Ref 2/ / /Building address

Physical data of Opaque *Wall/RoofFacade Orientation facing ______ Solar Factor (SF) is

*Wall/Roof Code Mo.

Location of Wall/Roof

External Finish Material

Conductivity W/m°CDensity kg/mj

Thickness m

Absorptivity (a)

Intermediate component


Thickness m


Conductivity W/m°C

Density kg/mj

Thickness m



Thickness m


Conductivity W/ro°C

Density kg/mj

Thickness m

Internal Finish Material

Conductivity ¥/M0C

Density kg/nr5

Thickness mAbsorptivity a

^U1 value of composite*Wall/Roof

Area of *Wall/Roof m2

Density of composite*Wall/Roof kg/»a

Equivalent temperaturedifference ^TDE(P

*WI/RI *VR2 *W3/R3 *W4/R4

*pelete as appropriateFirst issue April 199J

Building (Energy Efficiency) Regulation

findow/Rooflight Schedule

Mo. BBuilding address

Physical data on *window/roofligfat

Facade Orientation facing

BD Ref 2/

Solar Factor (SF) is

Window/Roof light Code No.

Location of * Window/Roof light

Glazing type

Thickness n

Shading Coefficient (SC)

Type of shading device

External ShadingMultiplier (ESM)

Area of glazing a2

fcFj/RLj *F2/RL2 *F3/RL3 *F4/RL4

Physical data on ^window/rootlight

Facade Orientation facing Solar Factor is

Window/Rooflight Code No.

Location of ^Window/Roof light

Glazing type

Thickness m


fype of shading device


Area of glazing m2

*Fl/iLl *VRL2 *F3/RL3 *F4/RL4

* Delete as appropriate

First isstie April 1995

Building (Energy Efficiency) Regulation

Calculation of OTTV of Individual in Building Envelope

Sheet No, C

Building address

Facade Orientation facing

BD Ref II i I

Opaque *Walls/Roofs

CodeNo.

Description

Subtotals

*V*r U a ™EQ

(A) Heat Gain

Stiff!

(C)

Fenestration

CodeNo.

Description

Subtotals

*Af¥/Afr SC ESM SF

(B) Heat Gain

Sura

(D)

Gross Heat Gain (C + D)

Gross Area (A + B)

C + D

A + BOTTV

*.Delete as appropriate

First issue April 1995

Building (Energy Efficiency) Regulation_____^^

of OTTV of Building Envelope

Sheet No. D

Building address

BD Ref. 2/ / _ /

Total Envelope Heat Gain (* Tower/Podium)

r ~ ™" "~™ "~ "•" ""•""'Facade

Orientation1

a*

b.

c .

d.

e.

f.

Subtotal

Roof

: a*

b.

Subtotal

Gross Areafrom

Form 3

(E)

(F)

Gross HeatGain fromForm OTTV3

(G)

(H)

Tower/Podiu« Halls OTTV =

* Tower/Podiu« Roofs OTTV = —

Towdt/Podium OTTf

G

rH

FG + H

W/ra*

W/ffi2

* Delete as appropriate'


AppondLxx A

sa.m;pXe; of OTTV calculi <a t xon Iioir

a typxcail commeircxcil t>uilcixngr

Roof.

Offices

external opaquerail finish on,6/F - 26/F is>lack glass

Offices

RefugeFloor

Offices

U

external opaquerail finish on>/F - 14/F is

mosaic tiles

Offices

Podium

Carpark

Carpark

Shops

Shops

Shops

I I

Roof

26/F

16/F

15/F

14/F

5/F

4/F

3/F

2/F

1/F

G/F

1 Basement

East Elevation

S 1 (stairs)

3*0 shops

(stairs)Basement

/

5.0, 6 . 0 . 6 . 0 , 6 . 0 . 6 . 0 , 6 . 0 , 5 . 0 ./ i f I/ I/ I/ I/ i / ! /

v * v • v » w _ %r * vc _

f f-f f

3,0

shops

3.0

{Toilet)

(Duct}

LW

D

(Lightwell)

Lift

Lift ";; Lobby

•n • n/ \

o

VD

G/F

/ / / / . 7\

3 — o • a TJ o—• n—• TJ c

shops

oQ

<\l

ramp

/\

Lift

Lift Lobb

*-* *•3 9.3

CLJ£2 EL _n a l/F

J y U U ' U ' "U O C

3 Carpark IF^

, 1 sI

Ii

1 l

3 i

3 f&

i f

/\

rampup

JK"

t>irampup

/K

•a

i n f t J

t=c

^ c

_ LWT

Lift ;

****** - • •- — L- - i"--"' -"D fift Lobby]

c

S I . ; , p 2/F

ar - a cr — • - TJ

carpark

TT n

3 .n n n n . n 3/F

S podium

O «— — — «f»<|--* — — TT*" r • 'U P — *IJ Sta «==c

i R» — — Ii "ft |

I | D Liift Lobby]D ^>MIM~ •*

. . • • . IiIa cs „,.

1, I " I ,

s

iI1t

[4/P

6.3 6.0 6.3

t f—1 fjo m ipf

office

3

T

D

LW 0.1

T

s

^c§70

Lift '1

Lift Lobby | ]

3

1 ' f , s i

c

f

en

IC\

vO

O

vO

5/F - 14/P

refugefloor

LW , 6.6

Lift

Lift Lobby|

1 15/F

0.1

3.0 2.3

j ti Uoffice

I

3IstT

D

P— s|*|

L,

s

f

Lift ^

Lift Lobby;

3

1 1i s .C

J™ 16/P - 26/F

Roof

Construction of

white semi gloss paint

10 mm gypsum plaster

100 mm concrete wall

10 mm.cement/sand render

5 mm mosaic tiles

PANEL WALLSGROUND - 15TH FLOOR

2 nun steel facing panel

50 mm air gap

75 mm mineral wool insulation

8 mm black glass


CURTAIN WALL16TH FLOOR - 26TH FLOOR

\7\7\25 mm concrete tiles

20 mm asphalt

50 mm cement/sand screed

50 mm expanded polystyrene

150' mm concrete



ROOF

100

500

1600

1000

700

TYPICAL SECTION

5TH FLOOR - 26TH FLOOR

Gross Wall Calculations

Storey heights :Ground and First Floors 4.0 m2nd & 3rd floors 3.5 m4th to 26th floors 3.2 mAll columns 600 x 600 mm All 600 x 600 mm

East Elevation

P G/F1/F

11.0 x 4.0 * 2 + 29 x 4.040 x 4.0 + 23 x 4 x 0.5

138.00 ra2206.00 m* 344.00

T 5/F-14/F 23.0 x 3.2 x 1016/F-26/F 23.0 x 3.2 x 11

736.00 ra«809.60 m* 1,545.60

5/F-14/F 6.3 x 3.2 x 1016-26/F 6.3 x 3.2 x 11

201.60 m*221.76 m* 423.36

North Elevation

P G/F1/F

40.0 x 4.040.0 x 4.0

160.00160.00 320.00

T 5-14/F16-26/F

18.6 x 3.2 x 10(18.6 + 9) x 3.2 x 11

595.20 IB*971.52 nt* 1,566.72

West Elevation

P G/F1/F

40 x 4.040 x 4.0 + 23 x 4 x 0.5

160.00 •>206.00 ra2 366.00 m*

T 5/F-14/F 29.3 x 3.2 x 1016/F-26/F 29.3 x 3.2 x 11

937.60 ta*1,031.36 m* 1,968.96 »*

South Elevation

P G/F Nil = -1/F 40 x 4.0 + (5.4x23.35-5.4x4.0) = 264.49 ra2 264.49 m2

T 5/F-14/F 18.6 x 3.2 x 1016/F-26/F (18.6 + 9) x 3.2 x 11

595.20 HI*971.52 ra* 1,566.72 m2

A10

Window Schedule

Building Address Typical Commercial Building

Orientationof Facade

East

North

West

South

Floor

G/F

1/F

2-4/F

5-14/F

5-14/F

15/F

16-26/F

16-26/F

G/F

1/F

2-4/F

5-14/F

15/F

16-26/F

G/F

1/F

2-4/F

5-14/F

15/F

16-26/F

G/F

1/F

2-4/F

5-14/F

15/F

16-26/F

16-26/F

ClassThickness

m

0.012

0.012

Nil

0.008

0.008

Nil

0.008

0.008

0.012

0.012

Nil

0.008

Nil

0.008

0.012

0.012

Nil

0.008

Nil

0.008

Nil

0.012

Nil

0.008

Nil

0.006

0.008

Type

plain

plain

Nil

tinted

tinted

tinted

tinted

tinted

plain

plain

Nil

tinted

Nil

tinted

plain

plain

Nil

tinted

Nil

tinted

Nil

plain

Nil

tinted

Nil

reflect-ive

tinted

Sizes and no. /floorm

(5.4 x 4 + 4.1) 3.4

(4.1x2 + 5.4x5) 3.4

(4.1+5.7+5.4x2) 1.6

2.7 x 1.6

-

(4.1+5.7+1.4+5.4) 1.6+3.9x0.8

2.7 x 1.6

(4.1+5.4x5+1.7+2.3)3.4

(4.1x2+5.4x5) 3.4

-

(2.3+3.0+5.4x2) 1.6

-

(2.3+3.0+5.4x2) 1.6

(4.1+5.4+2.7) 3.4

(4.1+5.4+2.7) 3.4

-

(5.4x3+4.1) 1.6

-

(5.4x3+4.1) 1.6

-

(4.1x2+2.7+2.6+5.4x3)3.4

-

(5.4x3) 1.6

-

(5.4x3) 1.6

(3.0 + 2.3) 1.6

Total areaper floor

mz

87.38

119.68

-

32.96

4.32

-

29.68

4.32

119.34

119.68

-

25.76

-

25.76

41.48

41.48

-

32.48

-

32.48

-

100.98

-

25.92

-

25.92

8.48

All

East Elevation (Tover) Gross Wall Area 1,545.60 + 423.36 =

Wall composite areas

1,968.96

Beams and Column Areas

5/F - 14/F [0.6 (11.0+5.7+6.3)+(0.6x2.6x4)] 10 = 200.40 m*

15/F Nil

16/F - 26/F [0.6 (11.0+5.4+6.6)+(0.6x2.6x4)3 11 = 220.44 m* 420.84 ra*

Glazing Areas in 100 mm panel/curtain vail from Window Schedule

5/F - 14/F 32.96 x 10 = 329.60 m*

15/F Nil

16/F - 26/F 29.68 x 11 = 326.48 m* 656.08

Glazing Area in 300 mm Structural Walls from Window Schedule

5/F - 14/F 4.32 x 10 = 43.20 m*

15/F 4.32 x 11 = 47.52 •> 90.72 m*

100 mm Panel/Curtain Wall Areas

5/F - 14/F 736.00 - (200.40 + 329.60)

15/F Nil

16/F - 26/F 809.60 - (220.44 + 326.48)

300 mm Structural Walls to Lift & Lift Lobby

5/F - 14/F 0.3 x 3.2 x 3 x 10

16/F - 26/F 0.3 x 3.2 x 3 x 11

300 mm Panel Walls to Lift & Lift Lobby

5/F - 14/F 201.60 - (43.20 + 28.80)

16/F - 26/F 221.76 - (47.52 + 31.68)

Lift shaft vails without gypsum plaster

5/F - 14/F 2.7 x 3.2 x 10

16/F - 26/F 2.7 x 3.2 x 11

Fenestration between 5/F - 14/F

Total Glazing in 100 mm panel walls

(4.1 + 5.7) 1.6 x 10

206.00

262.68 m* 468.68 m*

28.80 m*

31.68 at* 60.48 in*

129.60

142.56 272.16 m*

86.40

95.04 181.44 m*

329.60

156.80 unshaded

172.80 shaded


Total Glazing in curtain wall

[(4.1+5.7)1.6+(3.9x0.8)] 11

326.48

206.80 unshaded

119.68 shaded

A12

'U' value of composite vail of columns and beams :-G/F, 1/F, 5/F-14/F

Wi for beam and column

external surface film

5 mm white mosaic tiles

10 mm cement/sand render

600 mm concrete beam &column


Internal surface film(absorptivity below 0.5)

Totals

Ro = 0.044

0.005= 0.003

1.5

0.01= 0.014

0.72

0.60- o 278

2.16

0.01= 0.026

0.38

Ri = 0.299

0.664

Weight

0.005 x 2500 = 12.50

0.01 x 1860 = 18.60

0.60 x 2400 = 1440.00

0.01 x 1120 = 11.20

1482.30 kg/mz

0.664= 1.51 W/m*°C

(for west podium wall withouttiles or render %U* value is1.55 W/n*°C}

'U' value of composite wall panels :-G/F, 1/F, 5/F-14/F

«3 for wall panel




100 mm concrete panel


Internal surface film

Totals

Ro = 0.044

= 0.003

= 0.014

0.1= 0.046

2.16

= 0.026

Ri - 0.299

0.432

Weight

0.005 x 2500 = 12.50

0.01 x 1860 = 18.60

0.10 x 2400 = 240.00

0.01 x 1120 = 11.20

282.30 kg/m*

U¥ = - 2.320.432

(for west podium wall withouttiles and render *U' value is2.41 W/m*°C)

A13

'U' value of composite columns and beams :-16/F - 26/F

¥2 for beam and column

External surface film

8 mm black glass

50 mm Air space resistance(absorptivity above 0.5)

600 mm concrete beamand column



Totals

Ro = 0.044

0.008= 0.0076

1.05

Ra = 0.153

0.60= 0.278

2.16

0.01= 0.026

0.38

Ri = 0.299

0.808

Weight

0.008 x = 20.00

0.6 x » 1440.00

0.01 x 1120 = 11.20

1471.20

Uw = = 1.24 W/m*°C0.808

'U' value of composite curtain vail panels :-

16/F - 26/F

W4 for panel wall


8 mm black glass

75 mm mineral wool feltinsulation

50 mm Air space resistance(absorptivity above 0.5}

2 mm pressed steel panel


Totals

Ro = 0.044

0.008= 0.0076

1.05

0.075— = 1.923

0.039

Ra =0.153

0.002« 0.00004

50

Ri * 0.299

2.427

Weight

0.008 x 2500 = 20.00

0.075 x 50 - 3.75

—

0,002 x 7800 = 15.60

39.35 kg/m*

- 0.41 W/m*°C2.427

A14

'U' value of structural walls :-G/F, 1/F, 5/F-14/F

Ws for wall panel






Internal surface film(absorptivity below 0.5)

Totals

Ro

0.005

1.5

0.01

0.72

0.30

2.16

0.01

0.38

Ri

= 0.044

= 0.003

= 0.014

= 0.139

=0.026

= 0.299

0.525

Weight

0.005 x 2500 = 12.50

0.01 x 1860 = 18.60

0.30 x 2400 = 720.00

0.01 x 1120 = 11.20

762.3 kg/m2

= 1.9.1 W/m2°C0.525

'U' value of structural walls :•16/F-26/F

(for carpark ramp and walls withouttiles or render %IT value is1.97 W/«a°C)(for lift wall without gypsumplaster %Uf value is 3.13 W/ii2°C)

¥5 for beam and column


8 ram black glass

50 mm Air space resistance(absorptivity above 0.5)




Totals

Ro

0.008

1.05

Ra

0.30

2.16

0.01

0.38

Ri

= 0.044

= 0.0076

= 0.153

= 0.139

= 0.026

= 0.299

0.669

Weight

o ooft v 9Ron — ?n on

0.3 x 2400 = 720.00

0.01 x 1120 = 11.20

751.20 kg/m2

1 (for lift vail without gypsum~ 1-50 W/<a2°C plaster 'U1 value is 2.16 W/m2°C)

0.669

A15

'U' value of Lift Lobby wall :-

5/F - 14/F

W7 for beam and column




*3.0 m concrete lobby vail

Totals

Ro = 0.044

= 0.003

= 0.014

3.00= 1.389

2.16

1.450

Weight

0.005 x = 12.50

0.01 x = 13.60

3.00 x = 7200.00

7231.10

U¥ = a 0.69 i/m2°C1.45

* 3.0 ii length assuredfor simplicity

*Uf value of Lift Lobby vail :-

16/F - 26/F

Ws for beam and column


8 mm black glass

50 mm Air space resistance(absorptivity above 0.5}

*3.0 m concrete lobby vail

Totals

Ro = 0.044

= 0.0076

Ra = 0.153

= 1.389

= 1.594

Weight

0.008 x 2500 = 20.00

3.00 x 2400 = 7200.00

7220.00 kg/**

uw = 0.63 W/m*eC1.594

A16

Building (Energy Efficiency) Regulation__ Form OTTV .!_

Calculation of *U' Value of Composite Wall/Roofand Details of Other Values

Sheet No. h iBuilding address Typical Commercial Building

BD Ref 2/

Physical data of Opaque *Wall/Roof

Facade Orientation facing East (Tower) Solar Factor (SF) is 168

*Wal I/Roof Code No.Location of Wall/RoofExternal Finish MaterialConductivity W/m°C

Density kg/m3

Thickness mAbsorptivity (a)Intermediate componentConductivity W/m°C

Density kg/in3

Thickness mIntermediate componentConductivity W/m°CDensity kg/m3

Thickness m


Conductivity W/m°CDensity kg/m3

Thickness m

Intermediate componentConductivity W/m°CDensity kg/m3

Thickness m

Internal Finish MaterialConductivity W/m°CDensity kg/ra3


'U 1 value of composite*iall/RoofArea of *Wall/Roof a*

Density of composite*Wall/Roof kg/it*Eguivalent temperaturedifference (TD«A)

- - — ^

*VRiBeans & Cols5/F-14/F

1.50

25000.005

0.58

cement raider0.72

1860

0.01

r . concrete2.16

2400

0.60

wl

0.381120

0.01

0.30

1.51

200.401482

2.40

*VR2Beams & Cols16/F-26/F

1.05

25000.008

1.00

air gap

0.05

r. concrete2.16

2400

0.60

dte semi glo;on gypsum p!

0.38

1120

0.010.30

1.24

I 220.44

i 1471

: 2.40

*VR3Panel CurtainWalls 5/F-14/F

1.50

25000.005

0.58

cement render0.72

1860

0.01

r. concrete2.16

2400

0.10

is paint

.aster

0.38

1120

0.01

0.30

2.32

206.00

282

5.01

*W4/R4

Panel Curtainfell 16/F-26/F

1.05

2500

0.008

1.00

mineral wool0.03950

0.075

air gap

0.05

white semio*l O^SQ "na i Tit" nn

steel' panel

50

7800

0.0020.30

0.41

262.68

39

6.68

*Delete as appropriateFirst issue April 1995

A17


Calculation of 'U1 Value of Composite Wall/Roofand Details of Other Values

HA)Sheet No. A _

Building address Typical Commercial BuildingBD Ref 2/ / /



*Wall/Roof Code No.

Location of Wall/RoofExternal Finish MaterialConductivity W/m°CDensity kg/m^

Thickness m

Absorptivity (a)


Conductivity W/m°CDensity kg/in3

Thickness m


Thickness m



Thickness m


Conductivity W/m°C

Density kg/m3

Thickness mInternal Finish Material

Conductivity W/m°CDensity kg/m^

Thickness m

Absorptivity a4 U ' value of composite*Wall/RoofArea of *Wall/Roof m2

Density of composite*Wall/Roof kg/m*Equivalent temperaturedifference ITDEQJ

*W5/R5

35?F^F fellS

wnrce mosaictiles1.50

2500

0.005

0.58

cement render0.72

1860

0.01

r. concrete2.162400

0.30

white semi gLoen gypsum D!

0.38

1120

0.01

0.30

1.91(3.13}

43.20(86.4)

762(751)

2.40

*VR6

^efcS/F*black glass

1.05

2500

0.008

1.00

air gap

0.05

r . concrete2.162400

0.30

33 paintasterr 0.38

11200.010.30

1.50(2.16)

47.52(95.04)751(740)

2.40

*W7/R?

^P^1white mosaictiles1.50

2500

0.005

0.58

cement render0.72

1860

0.01

r. concrete2.162400

3.00

0.69

28.807231

2.40

*VR8

^y^fp*11

black glass1.0525000.0081.00

air gap

0.05r. concrete

2.1624003.00

0.63

31.687220

2.40

( ) Lift shaft vails without gypsum plaster*Delete as appropriate


A18

Building (Energy Efficiency) RegulationForro OTTV 2

Window/Rooflight Schedule

Sheet No. B 1 BD Ref 2/ / /

Building address Typical Commercial Building

Physical data on *vindow/rooflight


Window/Roof light Code No*

Location of *Window/Rooflight

Glazing type

Thickness it




Area of glazing m2

*F1/RL1

5/F-14/Fshaded

tinted

0.008

0.70

solidoverhang

0.7

172.80

*VRL2

5/F-14/Funshaded

tinted

0.008

0*70

—

—

156.80

*F3/RL3

16/F-26/Fshaded

tinted

0.008

0.70

aluminiumfoils

0.7

119.68

*F4/RL4

16/F-26/Funshaded

tinted

0.008

0.70

—

—

206.80

Physical data on *windov/roofiight

Facade Orientation facing East (Tower) Solar Factor is 168

iindo /Roof light Code No.


Glazing type

Thickness m



External ShadingMultiplier (ESM)!

Area of glazing m*

*F5/RL5

5/F-14/Funshaded

tinted

0.008

0.70

-

«

43.20

*F6/RL6

16/F-26/Funshaded

tinted

0.008

0.70

-

—

47.52

*F?/RL7 *F8/RL8



119

Building (Energy Efficiency) RegulationForm QTTV 3

Calculation of OTT¥ of Individual Facade in

Sheet No. C BD Ref 2/


Facade Orientation facing East (Tover)

Opaque ^Walls/Roofs

CodeNo.

Wl

W2

W3

W4

W5

W5A

W6

W6A

W7

W8

Description

Beams & Cols 5/F-14/F

Beams & Cols 16/F-26/F

Panel Curtain Walls5/F-14/F

Panel Curtain Walls16/F-26/F

300 Panel Walls5/F-14/F

300 Lift Walls

300 Panel Walls16/F-26/F

300 Lift Walls

Lift/Lobby wall5/F-14/F

Lift/Lobby wall16/F-26/F

Subtotals

*VAr

200.40

220.44

206.00

262.68

43.20

86.40

47.52

95.04

28.80

31.68

1,222.16

U

1.51

1.24

2.32

0.41

1.91

3.13

1.50

2.16

0.69

0.63

a

0.58

1.00

0.58

1.00

0.58

0.58

1.00

1.00

0.58

1.00

TDEQ

2.40

2.40

5.01

6.68

2.40

2.40

2.40

2.40

2.40

2.40

(A) Heat Gain

Sum

421.22

656.03

1,388.74

719.43

114.86

376.44

171.07

492.69

27.66

47.90

4,416.04 (C)

Fenestration

CodeNo.

FlF2

F3

F4

F5

F6

Description

5/F - 14/F shaded5/F - 14/F unshaded

16/F - 26/F shaded16/F - 26/F unshaded

5/F-14/F unshaded

16/F - 26/F unshadedSubtotals

*Af¥/Afr

172,80156.80

119.68

206.80

43.20

47.52

746.80

SC

0.700.70

0.70

0.70

0.70

0.70

ESM

0.7-

0.7-

-

-

SF

168168

168

168

168

168

(B) Heat Gain

Sum

14,224.9018,439.68

9,852.0624,319.68

5,080.32

5,588.35

77,504.99


Gross Area (A + B)

C + D———_. =A + B



OTTV =

81.921.03

1.968.96f( 41.61 W/m*

(D)

A20

North Elevation (Tover) Gross Wall Area 1,566.72 m2



5/F - 14/F (0.6 x 18.6 + 0.6 x 2.6 x 4) 10 = 174.00 m2

15/F Nil

16/F - 26/F (0.6 x 18.6 + 0.6 x 2.6 x 4) 11 - 191.40 m2 365.40 m*

300 mm Structural Wall to Lift

16/F-26/F 0.3 x 3.2 x 11

300 mm Structural Panel Wallsto Lift

16/F-26/F 9.0 x 3.2 x 11 - 10.56

= 10.56 m2

= 306.24 raa 316.80

Glazing Areas

5/F - 14/F 25.76 x 10

15/F Nil

16/F - 26/F 25.76 x 11

100 nan Staircase Wall

5/F - 14/F 0.1 x 2.6 x 10

16/F - 26/F 0.1 x 2.6 x 11

- 257.60 m»

* 283.36

2.60 HI*

2.86 m2

540.96

5.46 m2

100 mm Wall Panel Areas

5/F - 14/F 595.20 - (174.00 + 257.60 + 2.60} » 161.00 **

15/F Nil =

16/F - 26/F 971.52-U91.40+316.80+283.36+2.86) « 177.10 »* 338.10m2

A21

Building (Energy Efficiency)_____^^

Calculation of 8U S Value of Wall/Roof,and Details of Other Values

Sheet Mo. A BD Ref 2/

Building address Typica. 1 CongercJaJ

Physical data of Opaque *WalI/Roof

Facade Orientation facing North (Tower) Solar Factor (SF) is 104

*Wall/Roof Code No.


External Finish MaterialConductivity W/nt°CDensity kg/in3

Thickness m

Absorptivity (a)Intermediate component

Conductivity W/m°C

Density kg/m3

Thickness m



Thickness m



Thickness m


Conductivity W/m°C

Density kg/m3

Thickness m


Conductivity W/m°C

Density kg/m3

Thickness m

Absorptivity a

"U f value of composite*Wall/RoofArea of *Wall/Roof m«

Density of composite*Wall/Roof kg/»»Equivalent temperaturedifference ^TDEQ*

*VRIBeams & Oois5/F-14/Fwhite nx)saic

tiles1.50

2500

0.005

0.58

cement render

0.72

1860

0.01

r. concrete2.16

2400

0.60

white

0.38

1120

0.01

0.30

1.51

174.00

1482

1.70

*VR2Beams & Ooii16/F-26/Fblack glass

1.05

2500

0.008

1.00

air gap

0.05

r. concrete2.16

2400

0.60

semi gloss p<gypsum plast<

0.38

1120

0.01

0.30

1.24

191.40

1471

1.70

*VR3'Panel Wails'5/F-14/Fwhite mosaic

tiles1.50

2500

0.005

0.58

cement render

0.72

1860

0.01

r. concrete

2.16

2400

0.10

lint on

ir0.38

1120

0.01

0.302.32

161.00

282

2.72

*W4/R4

Osrtaiyl Wall "oanel1o/F-26/Fblack glass

1.05

2500

0.008

1.00

air gap0.039

50

0.075

air gap

0.05

white semisdoss paint onsteel panel

50

7800

0.002

0.30

0.41

177.10

39

3.38

*Delete as appropriate


A22


Calculation of SU' Value of Composite Wall/Roofand Details of Other Values

Sheet No. A 3Building address Typical Commercial Building

BD Ref 2/ / /



* Wai I/Roof Code No.Location of Wall/Roof

External Finish MaterialConductivity W/m°C

' Density kg/m^Thickness mAbsorptivity (a)Intermediate componentConductivity W/m°CDensity kg/m3

Thickness mInterned! ate componentConductivity W/m°CDensity kg/m3


Thickness mIntermediate componentConductivity W/m°CDensity kg/in3

Thickness mInternal Finish MaterialConductivity W/m°CDensity kg/m3

Thickness mAbsorptivity a"IT value of composite*Wall/RoofArea of * Wai I/Roof m2

Density of composite*tfall/Roof kg/in*Equivalent temperaturedifference (TDw))

*VR6300mm Structural

Panel fells16/F-26/Fblade glass

1.05

25000.0081.00

air gap

0.05

r. concrete2.1624000.30

2.16

306.24740

1.70

*W?/R7

1QOmn Staircasewall 5/F-14/Fwhite trasaic

tiles1.50

25000.0050.58

cement render0.72

1860

0.01

r. concrete2.16

24003.00

0.69

2.60

7231

1.70

*VR8lOOnrn Stairwall 16/F-26/Fblack glass

1.0525000.0081.00

air gap

0.05r. concrete

2.1624003.00

0.63

2.867220

1.70

*W8A/R8ABOOnm Structural

Lift tells16/F-26/Fblack glass

1.05

25000.0081.00

air gap

0.05

r. concrete2.1624003.00

0.63

10.567220

1.70

^Delete as appropriateFirst issue April 1995

A23

Building {Energy Efficiency) RegulationForm OTTV 2


Sheet No* B BB Eef 2/


Physical data on *windo¥/roofiight



Location of *Window/Roof light

Glazing type

Thickness n

Shading Coefficient (SO



Area of glazing m2

*F1/RL1

5/F-14/Fshaded

tinted

0.008

0.70

solidoverhang

0.80

257.60

*F9/RL9£3. A

16/F-26/Fshaded

tinted

0.008

0.70

aluminiumfoils

0.80

283.36

*F3/RL3 *F4/RL4

Physical data on *window/rooflight




Glazing type

Thickness m




Area of glazing m2

*F1/RL1 *F2/RL2 *P3/RL3 *F4/Mi4



A24


Calculation of OTTV of Individual Facade in Building Envelope



Facade Orientation facing North (Tover)

Opaque *Walls/Roofs

CodeNo.

Wl

W2

W3

W4

W6

W7

W8

W8A

Description

Beams & Col. 5/F-14/F


Panels Walls 5/F-14/F


300 mm StructuralPanel 16/F-26/F

100 mm Stair vail5/F-14/F

100 mm Stair wall16/F-26/F

300 mm Lift wall16/F-26/F

Subtotals

*VAr

174.00

191.40

161.00

177.10

306.24

2.60

2.86

10.56

1,025.76

U

1.51

1.24

2.32

0.41

2.16

0.69

0.63

0.63

a

0.58

1.00

0.58

1.00

1.00

0.58

1.00

1.00

TDEQ

1.70

1.70

2.72

3.38

1 . 70

1.70

1 . 70

1.70

(A) Heat Gain

Sum

259.06

403.47

589.27

245.43

1,124.51

1.77

3.06

11.31

2,637.88

Fenestration

(C]

CodeNo.

Fl

F2

Description

5/F - 14/F

16/F - 26/F

Subtotals

*Afw/Afr

257.60

283.36

540.96

SC

0.70

0.70

ESM

0.80

0.80

SF

104

104

(B) Heat Gain

Sum

15,002.62

16,502.89

31,505.51

Gross Heat Gain (C + D) 34,143.39

Gross Area (A + B) 1,566.72

C + DOTTV = 21.79

A + B



(D)

A25

West Elevation (Tower) Gross Wall Area 1,968.96



5/F - 14/F (0.6 x 29.3 + 0.6 x 2.6 x 6) 10 = 269.40 m2

15/F Nil

16/F - 26/F (0.6 x 29.3 + 0.6 x 2.6 x 6} 11 = 296.34 m* 565.74

Glazing Areas

5/F - 14/F 32.48 x 10 = 324.80 m*

15/F Nil

16/F - 26/F 32.48 x 11 = 357.28 m* 682.08

Wall Panel Areas

5/F - 14/F 937.60 - (269.40 + 324.80) = 343.40 m*

15/F Nil

16/F - 26/F 1,031.36 - (296.34 + 357.28) = 377.74 m* 721.14

A26

Building (Energy Efficiency) Regulation_Form OTTV 1 .

Calculation of "II1 Value of Composite Wall/Roofand Details of Other Values

Sheet No. A 3


BD Ref 2/


Facade Orientation facing West (Tower) Solar Factor (SF) is 175

*Wall/Roof Code No.

Location of Wall/RoofExternal Finish Material

Conductivity W/m°CDensity kg/ra3

Thickness mAbsorptivity (a)Intermediate component

Conductivity W/m°C

Density kg/fit^

Thickness HIIntermediate component

Conductivity i/m°CDensity kg/n3

Thickness IBIntermediate component

Conductivity W/m°CDensity kg/ra3

Thickness mInterned! ate componentConductivity W/m°C

Density kg/m"3"




* U f value of composite*Wal I/RoofArea of *Hal I/Roof fi2

Density of composite*Wall/Roof kg/a*Equivalent temperaturedifference (TDPri), , ^y

*v*iBeams & Cols5/F-14/F

white mosaictiles

1.50

2500

0.0050.58

cement render0.72

1860

0.01

r. concrete2.16

2400

0.60

white ;<

0.38

1120

0.01

0.30

1.51

269.40

1482

2.10

*VR2Beams & Cols

16/F-26/Fblack glass

1.05

2500

0.008

1.00

air gap

0.05

r. concrete

2.16

2400

0.60

;emi gloss pa:

sYpsum plaste;

0.38

1120

0.01

0.30

1.24

296.34

1471

2.10

*W3/R3

Panel Ifells5/F-14/Fwhite mosaic

tiles1.50

2500

0.005

0.58

cement render

0.72

1860

0.01

r. concrete2.16

2400

0.10

.nt on

0.38

1120

0.01

0.30

2.32

343.40

282

4.35

*VR4Curtain Wallpanel 16/F-26/F

black glass1.05

2500

0.008

1.00

mineral felt

0.039

50

0.075

air gap

0.05

white semigloss paint onsteel panel

50

7800

0.0020.30

0.41

377.74

39

5.79

*Belete as appropriateFirst issue April 1995

127

Building (Energy Efficiency) RegulationForm 2


Sheet No, B BD Ref 2/ / /



Facade Orientation facing West (Tower) Solar Factor (SF) is 175

Window/Rooflight Code No*


Glazing type

Thickness m




Area of glazing m2

*F1/RL1

5/F-14/Fshaded

tinted

0.008

0.70

solidoverhang

0*70

324*80

*VRL2

16/F-26/Fshaded

tinted

0.008

0*70

aluminiumfoils

0.70

357.28

*F3/RL3 *F4/RL4




Location of *Windo¥/Rooflight

Glazing type

Thickness n




Area of glazing »*

*F1/RL1 *F9/RImL &*F3/RL3 *F4/RL4



128



Sheet No. C BD Ref 2/ / /


Facade Orientation facing West (Tower)

.Opaque * Wai Is/Roofs

CodeNo.

Wl

W2

W3

W4

Description




Curtain Wall Panels16/F-26/F

Subtotals

*Vflr

269.40

296.34

343.40

377.74

1,286.88

U

1.51

1.24

2.32

0.41

a

0.58

1.00

0.58

1.00

TDEQ

2.10

2.10

4.35

5.79

(A) Heat Gain

Sum

495.48

771.67

2,010.04

896.72

4,173.91 CO

Fenestration

CodeNo.

Fl

F2

Description

5/F - 14/F

16/F - 26/F

Subtotals

*Afw/Afr

324.80

357.28

682.08

SC

0.70

0.70

ESM

0.70

0.70

SF

175

175

(B) Heat Gain

Sum

27,851.60

30,636.76

58,488.36 (D)


'Gross Area (A * B) 1,968.96

C + DOTT V =

B31.83



A29

South Elevation (Tower) Gross Wall Area 1,566.72 m*


Beam and Column Areas

5/F - 14/F (0.6 x 18.6 + 0.6 x 2.6 x 4) 10 = 174.00 m2

15/F Nil

16/F - 26/F [(0.6 x (18.6+9)+0.6 x 2.6 x 6)] 11 = 285.12 m2 459.12 m2

Glazing Areas

5/F - 14/F 25.92 x 10 = 259.20 m*

15/F Nil

16/F - 26/F 25.92 x 11 = 285.12 m2

16/F - 26/F 8.48 x 11 = 93.28 m2 637.60 m2

100 mm Stair case vail

16/F - 26/F 0.1 x 2.6 x 11 = 2.86 m2 2.86

Wall Panel Areas

5/F - 14/F 595.20 - (174.00 + 259.20) = 162.00 »*

15/F Nil

16/F - 26/F 971.52 - (285.12+285.12+93.28+2.86) = 305.14 m2 467.14 m2


Total Glazing 285.12 + 93.28 = 378.40 »*

(5.4 x 3) x 1.6 x 11 = 285.12 »* Unshaded

93.28 m2 Shaded

A30

Building (Energy Efficiency) RegulationForm QTTV 1 '

Calculation of S1T Value of Composite Wall/Roofand Details of Other Values

Sheet No. A 4


BD Ref 2/ / /


Facade Orientation facing South (Tower) Solar Factor (SF) is 191

* Wai I/Roof Code No.Location of Wall/RoofExternal Finish MaterialConductivity W/m°CDensity kg/in3

Thickness m

Absorptivity (a)


Conductivity W/in°CDensity kg/m3

Thickness m

Intermediate componentConductivity W/m°CDensity kg/it 3

Thickness mIntermediate component


Thickness m

Intermediate componentConductivity W/m°CDensity kg/m^



Thickness m

Absorptivity a

* U * value of composite*Wall/RoofArea of *Wall/Roof m*Density of composite*Wall/Roof kg/m*Equivalent temperaturedifference (TD™J&U

*wi/RiBeans & Col5/F-14/F

white tBDsaictiles

1.50

25000.005

0.58

cenEnt render0.72

1860

0.01

r . concrete2.16

2400

0.60

white tc

0.38

1120

0.01

0.30

1.51

174.00

1482

1.40

*W2/R2

Beams & Cols16/F-26/Fblack glass

1.05

2500

0.0081.00

air gap

0.05

r. concrete2.16

2400

0.60

emi gloss pa:

[ypsum plastei

0.38

1120

0.01

0.30

1.24

285.121471

1.40

*VR3Panel Walls5/F-14/F

white mosaictiles .1.50

25000.005

0.58

cement render

0.7218600.01

r. concrete2.16

2400

0.10

nt on

0.38

1120

0.01

0.30

2.32

162.00

282

3.60

*W4/R4

black glass1.05

25000.008

1.00

mineral felt0.039

50

0.075

air gap

0.05

white semigloss paint', cmsteel panel

50

7800

0.0020.30

.0.41

305.14

39

5.01



A31

Sheet No. A

Building (Energy Efficiency) RegulationForm QTT¥ 1

Calculation of suf Value of Composite Wall/Roofand Details of Other Values

BD lef 2/ / /Building address Typical Commercial BuildingPhysical data of Opaque *Wall/RoofFacade Orientation facing South (Tower) Solar Factor (SF) is 191

*Wall/Roof Code No.

Location of Wall/RoofExternal Finish MaterialConductivity W/m°C

Density kg/m3

Thickness mAbsorptivity (a)Intermediate componentConductivity W/m°C

Density kg/in3

Thickness in

Intermediate componentConductivity l/m°CDensity kg/m3


Thickness m

Intermediate componentConductivity W/m°C

Density kg/m3


Conductivity W/«°CDensity kg/m3

Thickness mAbsorptivity a*U" value of composite*Wall/RoofArea of *Wall/Roof m2

Density of composite*Wall/Roof kg/m*Equivalent temperaturedifference (TIW

*W8/R8

16/F-26/FStaircase vailblack pdass

1.05

2500

0.008

1.00

air gap

0.05

r. concrete2.162400

3.00

0.63

2.867220

1.40


A32



Sheet No. B BD Ref 2/


Physical data on *¥indov/rooflight

Facade Orientation facing South (Tower) Solar Factor (SF) is 191



Glazing type

Thickness m




Area of glazing m2

*F1/RL1

5/F-14/Funshaded

tinted

0.008

0.70

259.20

*F2/RL2

16/F-26/Funshaded

reflective

0.006

0.40

285.12

*F3/RL3

16/F-26/Fshaded

tinted

0.008

0.70

aluminiumfoils

0.70

93.28

*F4/RL4



lindow/Roof light Code No.

Location of ^Window/Roof light

Glazing type

Thickness in




Area of glazing m2

*F1/RL1 *F2/RL2 *F3/RL3 *F4/RL4


First issue ADril

A33



Sheet No, C BD Ref 2/


Facade Orientation facing South (Tower)

Opaque *WalIs/Roofs

CodeNo.

Wl

W2

W3

W4

W8

Description





Stair Walls 16/F-26/F

Subtotals

*VAr

174.00

285.12

162.00

305.14

2.86

929.12

U

1.51

1.24

2.32

0.41

0.63

a

0.58

1.00

0.58

1.00

1.00

TDEQ

1.40

1.40

3.60

5.01

1.40

(A) Heat Gain

Sum

213.34

494.97

784.75

626.79

2.52

2,122.37 (C)

Fenestratioa

CodeNo.

Fl

F2

F3

Description

5/F - 14/F unshaded

16/F - 26/F unshaded

16/F - 26/F shaded

Subtotals

*Afy/Afr

259.20

285.12

93.28

637.60

SC

0.70

0.40

0.70

ESM

0.70

SF

191

191

191

(B) Heat Gain

Sum

34,655.04

21,783.17

8,730.08

65,168.29 (D)


Gross Area (A + B) 1,566.72

OTTV =C + D

A + B42.95 W/ffi*



A34


Summary of OTTV of Building Envelope

Sheet Mo. D


BD Ref. 2/

Total Envelope Heat Gain (*Tower/Podium)

FacadeOrientation

a. East

b. North

c. West

d . South

e.

f.

Subtotal

Roof

a.

b.

Subtotal

Gross Areafrom

Form OTTV 3

1,968.96

1,566.72

1,968.96

1,566.72

7,071.36 (E)

391.80

(F)

Gross HeatGain fromForm OTTV 3

81,921.03

34,143.39

62,662.27

67,290.66

246,017.35 (G)

13,185.05

(H)

Tower/Podiua Walls OTTV = — = 34*79E

HTower/Podium Roofs OTTV = -— = 33.65

F

Tower/Podiuu OTTVE

34»73



A35

Accountable Roof Areas

Roof

Gross Area = 6.0 x 6.6 + 9.6 x 8.0 •*• 6 x 10.3 + 9.0 x 3.0 +18.6 x 8.0 + (6.3 x 3.0 x 2) = 391.80 m%

Glazed area = 8.4 x 8.0 = 57,20 n2

Beam area = [(15.6 x 2) + (6.0 x 2} + 18.6 + (6.3 x 2) +(5.4 x 9) + 1.4 + (4.1 x 2) -i- (1.7 x 2] +(2,4 x 2 x 0.5) + (3.6 x 0.5)] 0.6 = 84.12 m^

Lift Lobby walls = 0.3 (9+2.7) = 3*51 n2

Panel area = 391.80 - 67.2 - 84.12 - 3.51 = 236.97 n*

15/F

Gross Area = 6.6 x 5.4 + 2.4 x 1.4 = 39,00 ro2

Glazed area = Nil

Beam area , = 0.6. (5.4 x 2) = 6,48 in2

Panel area = ..39.00 - 6.48 = 32.52 Hi2

Podium Roof

Carpark under non-accountable Mil

A36

'!)' value of composite roof beams (and panels! :-

15/F and Roof

Rj (R2) for beams (panels)


25 mm concrete tiles

20 mm asphalt

50 mm cement/sand screed

50 mm polystyreneinsulation

600 mm r. concrete



Totals

r

Ro = 0.055

0.025= 0.023

1.10

0.02= 0.017

1.15

0,05= 0 069

0.72

0.05= 1 471

0.034

= 0.278

= 0.026

Ri = 0.801

2.740

Weight

0.025 x 2100 = 52.50

0.02 x 2350 = 47.00

0.05 x 1860 = 93.00

0.05 x 25 = 1.25

0.6 x 2400 = 1440.00

0.01 x 1120 = 11.20

1644.95 kg/m

UR =2.740

= 0.37 W/m2°C

for 150 mm slab %U" value is 0.40 W/m2°C and weight = 564.95 kg/m

for lift lobby walls say 3.0 m deep for ease of calculation,%U' value is 0.33 W/m2°C and weight = 7,393.75 kg/m

A3?


Calculation of 'IT Value of Composite Wall/Roofand Details of Other Values

Sheet No. A 5



Facade Orientation facing Roof (Tower) Solar Factor (SF) is 264

*Wall/Roof Code No.



Conductivity W/m°C

Density kg/nn

Thickness m

Absorptivity (a)


Conductivity W/m°C

Density kg/m3

Thickness m



Thickness m



Thickness m


Conductivity W/m°C

Density kg/m^

Thickness m



Thickness m

Absorptivity a%U f value of composite*Wall/RoofArea of *Wall/Roof m2

Density of composite*Wall/Roof kg/ra2

Equivalent temperaturedifference ^TDEQ)

*w1/n1Tower- Roof Beamconcrete tiles

1.102100

0.025

0.65

asphalt

1.152350

0.02

cemei

0.72

1860

0.05

6)

0.034

25

0.05

r. concrete

2.16

2400

0.60white semi £

svpsun0.38

1120

0.01

0.30

0.37

84.12

1645

7.90

*VR2Tower Roof Panelsconcrete tiles

1.10

2100

0.025

0.65

asphalt

1.152350

0.02

it/sand screed

0.72

1860

0.05

panded polystyrei

0.034

25

0.05

r. concrete

2.162400

0.15loss paint onBlaster

0.38

1120

0.01

0.30

0.40

236.97

565

9.75

*VR3Tower Eocf Lift fellsconcrete tiles

1.102100

0.025

0.65

asphalt

1.15

23500.02

0.72

1860

0.05

,e0.034

25

0.05

r. concrete

2.16

2400

3.00

0.33

3.51

7394

7.90



A38

Building (Energy Efficiency) RegulationForm OTTV 2 .


Sheet No. B BD Ref 2/ / /



Facade Orientation facing Roof (Tower) Solar Factor (SF) is 264



Glazing type

Thickness m




Irea of glazing m2

*F1/RL1

Roof

tinted

0.008

0.70

-

67.20

*VRL2 *VRL3 *F4/RL4

Physical data on ^window/rooflight




Glazing type

Thickness m




Area of glazing m2

*F1/RL1 *F2/RL2 *VRL3 *F4/RL4



A39



Sheet No. C


BD ief 2/

Facade Orientation facing Roof (Tower)

J—J

Opaque *Walls/Roofs

CodeNo.

Rl

R2

R3

Description

Tower Roof Beams

Tower Roof Panels

Tower Roof Stair &Lift Walls

Subtotals

*VAr

84.12

236.97

3.51

324.60

D

0,37

0.40

0.33

a

0.65

0.65

0.65

TDEQ

7.90

9.75

7.90

(A) Heat Gain

Sum

159.82

600.72

5.95

766.49 (C)

Fenestration

CodeNo.

RI

Description

Roof light

Subtotals

*Af¥/Afr

67.20

67.20

SC

0.70

ESM

«•

SF

264

(B) Heat Gain

Sum

12,418.56

12,418,56 ID)


Gross Area (A + B) 391.80

C + DOTTV 33.65

A + B



A40


Calculation of 'U' Value of Composite Wall/Roofand Details of Other Values

Sheet No. h 5(A) BD Ref 2/ / /

Building address _Tvpical Commercial Building

Physical data of Opaque *Wall/RoofFacade Orientation facing Roof (15/F)... Solar Factor (SF) is 264

*WaI I/Roof Code Mo.Location of Wall/Roof


Conductivity !/m°C

Density kg?iP~~

Thickness m

Absorptivity (a)Intermediate componentConductivity W/ni0C

Density kg/in3

Thickness mIntermediate component


Thickness inIntermediate component


Thickness m


Conductivity W/m°C

Density kg/m3

Thickness m


Conductivity W/ra°CDensity kg/ra3


"U1 value of composite*Hall/RoofArea of *Wall/Roof m*

Density of composite*lall/Roo£ kg/in*

Equivalent temperaturedifference (TDWA)- --- - EQ

*wi/Ri15/F Beams

concrete tiles

1.10

2100

0.025

0.65

asphalt

1.15

2350

0.02

cement/sand sc:

0.72

1860

0.05

expanded polys'

0.034

25

0.05

r. concrete2.16

2400

0.60

white semi gloss pail

0.38

1120

0.010.30

0.37

6.48

1645

7.90

*VR215/F Panels

concrete tiles

1.10

2100

0.025

0.65

asphalt

1.15

2350

0.02

•eed

0.72

1860

0.05

-yrene

0.034

25

0.05

r. concrete

2.16

2400

0.15

it on gypsum plaster

0.381120

0.01

0.30

0.40

32.52

565

9.75

*Delete as appropriateFirst issue ADtil 1995

A41



Sheet No. C 5(A) BD Ref 2/ / /


Facade Orientation facing Roof (15/F)

Opaque ^Walls/Roofs

CodeNo.

R3

R4

Description

15/F Beams

15/F Panels

Subtotals

*VAr

6.48

32.52

39.00

U

0.37

0.40

a

0.65

0.65

TDEQ

7.90

9.75

(A) Heat Gain

Sum

12.31

82.44

94.75 (C)

Fenestration

CodeNo.

Description

Subtotals

*Afw/Afr SC ESM SF

(B) Heat Gain

Sun

(D)


Gross Area (A + B)

C •+ D

94.75

39.00

OTTV = 2.43A + B

W/ffi*



A42

East Elevation (Podima) Gross Wall Area 344.00

Wall Composite Areas


G/F 0.6 x 40.0 + 0.6 (3.4 x 6 + 3.4 x 0.5*) » 37.26 m2

1/F 0.6 x 40.0 + 0.6 (3.4 x 8) » 40.32 ra*

1/F (Ramp) 0.6 x 23.0 + 0.6 (3.4 x 5 x 0.5) = 18.90 m*

2/F - 4/F Nil = - 96.48

Glazing Areas

G/F 87.38 m* = 87.38 m*

1/F 119.68 m* = 119.68 m*

2/F - 4/F Nil = - 207.06

300 mm Retaining Wall

G/F 138.00 - (37.26 + 87.38) » 13.36 m*

300 mm Ramp Wall

1/F 23 x 4 x 0.5 - 18.90 » 27.1 m*

* Only half column considered to contribute

A43

•Building (Energy Efficiency) RegulationForm QTTV 1

Calculation of 'U1 Value of Composite Wall/Roofand Details of Other Values-

Sheet No. A 6



Facade Orientation facing East (Podium) Solar Factor (SF) is 168

*Wall/Roof Code No.



Conductivity W/m°C

Density kg/m3

Thickness m

Absorptivity (a)


Conductivity W/ti°C

Density kg/m3

Thickness m


Conductivity W/m°C

Density kg/m3

Thickness m


Conductivity W/m°C

Density kg/m3

Thickness m


Conductivity tf/m°C

Density kg/m3

Thickness m


Conductivity W/m°C

Density kg/m3

Thickness m

Absorptivity a"U1 value of composite*Wall/RoofArea of *Wal I/Roof m2

Density of composite*Wall/Roof kg/in*Equivalent temperaturedifference ^TDEQ)

*WI/RIBeams & ColsG/F& 1/Fwhite mosai<

1.502500

0.005

0.58cement rei

0.7218600.01

Reinforced <

2.162400

0.60

white semi g'.on gypsum

0.38

1120

0.01

0.30

1.51

96.48

1482

2.40

*VR5Retaining Wall

G/Fi tiles

1.50

2500

0.005

0.58.der

0.7218600.01

oncrete

2.162400

0.30

oss paint

plaster

0.3811200.010.301.91

13.36762

2,40

*W5A/R5A'" Kanp tell

1/F

2.16

2400

0.30

0.65

0.38

1120

0.01

0.30

1.97

27.1

731

2.40

*W /R



A44


Windo¥/Rooflight Schedule




Facade Orientation facing East (Podium) Solar Factor (SF) is 168

Windov/Roof light Code No.

Location of *Windo¥/Roof light

Glazing type

Thickness ffl


•Type of shading device


Area of glazing i2

*F1/RL1

G/F&l/Funshaded

plain

0.012

0.90

-

—

207.06

*F2/RL2 *VRL3 *F4/RL4

Physical data on *vindov/rooflight


fiindov/Roof light Code No.

Location of *Windo¥/Roof light

Glazing type

Thickness m




Area of glazing i2

*F1/RL1 *F2/RL2 *F3/RL3 *VRL4



A45





Facade Orientation facing East (Podium)

Opaque *WaiIs/Roofs

CodeNo.

Wl

W5

W5

Description

Beams & Col. G/F&l/F

Panels G/F&l/F

Ramp Wall 1/F

Subtotals

*VAr

96.48

13.36

27.10

136.94

U

1.51

1.91

1.97

a

0.58

0.58

0.65

TDEQ

2.40

2.40

2.40

(A) Heat Gain

Sum

202.79

35.52

83.28

321.59 (C)

Fenestration

CodeNo.

Fl

Description

G/F & 1/F

Subtotals

*Afw/Afr

207.06

207.06

SC

0.90

ESM

—

SF

168

(B) Heat Gain

Sum

31,307.47

31,307.47 (D)


Gross Area (A + B)

C + D

31.629.06

344.00

OTTV 91.95 W/ra*A + B



North Elevation (Podiua)

A46

Gross Wall Area



G/F 0.6 x 40 + 0.6 x 3.4 x 8

1/F 0.6 x 40 + 0.6 x 3.4 x 8

100 mm Stair Wall

G/F Stair Wall 0.1 x 3.4

Glazing Areas

G/F 119.34

1/F 119.68

Panel Areas

G/F

1/F

160.00 - (40.32 + 119.34 + 0.34) «

160.00 - (40.32 + 119.68) »

40.32 m*

40.32 m*

0.34

119.34 m*

119.68 m2

0

0

320.00 mz

80.64 m*

239.02

A47

Building (Energy Efficiency) RegulationForm QTTV 1 __

Calculation of 'U1 Value of Composite Wall/Roofand Details of Other Values

Sheet No. A 7

Building address Typical Commercial BuildingBD Ref 2/


Facade Orientation facing North (Podium) Solar Factor (SF) is 104

*Wall/Roof Code No.



Conductivity W/m°C

Density kg/m^

Thickness m

Absorptivity (a)


Conductivity W/m°C

Density kg/m^

Thickness m


Conductivity W/m°C

Density kg/m3

Thickness m


Conductivity W/m0C

Density kg/ra3

Thickness m


Conductivity W/m*C

Density kg/m3

Thickness m


Conductivity W/m°C

Density kg/m3

Thickness m

Absorptivity a%Uf value of composite*Wal I/Roof

Area of *Wall/Roof m*

Density of composite*Wall/Roof kg/m2

Equivalent temperaturedifference ^TDEQ)

*WI/RIBeams & ColsG/F & 1/F

white moi

1.50

2500

0.005

0.58

cement

0.72

1860

0.01

Reinforced

2.16

2400

0.60

white semi g'.

on gypsum

0.38

1120

0.01

0.30

1.51

80.64

1482

1.70

*W?/R7Stair Wall

G/F;aic tiles

1.50

2500

0.005

0.58

render

0.72

1860

0.01

concrete

2.16

2400

3.00

oss paint

plaster

0.69

0.34

7231

1.70

*W3/R3 *W4/R4



A48



Sheet No, B BD Ref 2/ / /

Building address Typical CoBmercial Building

Physical data on *¥indow/rooflight

Facade Orientation facing North (Podium) Solar Factor (SF) is 104

iindow/Roof light Code No*

Location of *iindow/Roof light

Glazing type

Thickness m




Area of glazing it2

*F1/RL1

G/F&l/Funshaded

plain

0.012

0.90_

—

239.02

*F,/Rlm4 «

*F3/RL3 *F4/RL4



iindov/Roof light Code No..

Location of *iindow/Roof light

.Glazing type

•.Thickness m




Area of glazing n*

*F1/RL1 *F7/RL7£t &*F3/RL3 *F4/RL4



A49

Building (Energy Efficiency) RegulationForro OTTV 3


Sheet No. C BD lef 2/ / /


Facade Orientation facing North (Podium)

Opaque *Walls/R0ofs

CodeNo.

Wl

W7

Description

Beams & Cols. G/F&l/F

Stair Wall G/F

Subtotals

*VAr

80.64

0.34

80.98

U

1.51

0.69

a

0.58

0.58

TDEQ

1.70

1.70

(A) Heat Gain

Sum

120.06

0.23

120.29 (C)

Fenestratipn

CodeNo.

Fl

Description

G/F & 1/F

Subtotals

*Afw/Afr

239.02

239.02

SC

0.90

ESM

-

SF

104

(B) Heat Gain

Su»

22,372.27

22,372.27 (D)


Gross Area (A > B) 320.00

C + DOTTV =

A + B70.29



A50

West Elevation (Podiim) Gross Wall Area 366.00 m2

—— (with tiles = 112 m2)(Party wall = 208 m2)


Beam and Column Areas (with tiles)

G/F 0.6 x 14 + 0.6 (3.4 x 3) = 14.52 m2

1/F 0.6 x 14 + 0.6 (3.4 x 3) = 14.52 m2 29.04 m2

300 mm Ramp Wall

1/F 23 x 4 x 0.5 - 18.9 = 27.1 m2

Glazing Areas

G/F 41.48 = 41.48 m2

1/F 41.48 = 41.48 m2 82.96 m2

Beam and Column Areas (Party Wall and Ramp)

G/F 0.6 x 26 + 0.6 (3.4 x 5) » 25.80 m2

1/F 0.6 x 26 + 0.6 (3.4 x 5) « 25.80 m2

1/F Samp 0.6 x 23 + 0.6 (3.4 x 5 x 0.5) = 18.90 m2 70.50 m2

Panel Areas (with tiles)

G/F and 1/F 112.00 - (29.04 + 82.96)

Panel Areas in Party Wall

G/F and 1/F 208 - 51.60 = 156.40 m2 156.40 m2

A51


Calculation of §U' Value of Composite Wall/Roofand Details of Other Values

Sheet No. A 8 BD Ref 2/



Facade Orientation facing West (Podium) Solar Factor (SF) is 175

*Wall/Roof Code No.


External Finish MaterialConductivity W/m°CDensity kg/m3

Thickness mAbsorptivity (a)Intermediate componentConductivity W/ift°CDensity kg/m3

Thickness m






Thickness mAbsorptivity a'IT value of composite*Wall/RoofArea of *Wall/Roof m2

Density of composite*Wall/Roof kg/m*Equivalent temperaturedifference (TDEQ)

*W1/R1Beans & ColsG/F & 1/F

white mosaictiles1.50

2500

0.005

0.58

cement render0.72

1860

0.01

Reinforced <2.16

2400

0.60

white semi g.on gypsum

0.38

1120

0.01

0.30

1.51

29.04

1482

2.10

*W1A/R1A •Beams & ColsG/F & 1/FReinforced

2.16

2400

0.60

0.65

:oncrete

oss paintplaster

0.38

1120

0.01

0.30

1.55

70.50

1451

2.10

*W3/R3ijaneisG/F & 1/FConcrete

2.16

2400

0.10

0.65

0.38

1120

0.01

0.30

2.41

156.40

250

4.35

*v%Harp vfell1/F

ReinforcedConcrete

2.16

2400

0.30

0.65

0.38

1120

0.01

0.30

1.97

27.1

731

2.10


A52



Sheet No. B BD Ref 2/ /



Facade Orientation facing West (Podium) Solar Factor (SF) is 175

Window/Roof light Code No,


Glazing type

Thickness us




Area of glazing ro2

*F1/RL1

G/F&l/Funshaded

plain

0.012

0.90

-

—

82.96

*F2/RL2 *F3/RL3 *F4/RL4



Hindov/Roof light Code Mo.

Location of *Iindow/Roof light

Glazing type

Thickness m




Area of glazing m2

*F1/RL1 *F2/RL2 *F3/RL3 *F4/RL4



A53



Sheet No. C BD lef 2/ / /


Facade Orientation facing West (Podium)

Opaque ^Walls/Roofs

CodeNo.

Wl

W1A

W3

W5

Description



Panels G/F&l/F

Ramp Wall 1/F

Subtotals

*VAr

29.04

70.50

156.40

27.10

283.04

U

1.51

1.55

2.41

1.97

a

0.58

0.65

0.65

0.65

EQ

2.10

2.10

4.35

2.10

(A) Heat Gain

Sum

53.41

149.16

1,065.75

72.87

1,341.19 CO

Fenestration

CodeNo.

Fl

Description.

G/F & 1/F

Subtotals

*Af¥/Afr

82.96

82.96

SC

0.90

ESM

-

SF

175

(B) Heat Gain

Sum

13,066.20

13,066.20 CO)

Gross Heat Gain (C + D) 14,407*39

Gross Area (A + B) 366,00

C + DOTTV =

A + B39,36



154

South.Elevation (Podiu») Gross Wall Area 264.49 m*



G/F - = -

1/F 0.6 x 34.6 + 0.6 (3.4 x 8} » 37.08 m2 37.08 m2

1/P Stair Wall 0.1 x 3.4 - 0.34 m2 0.34 m2

Glazing Areas

G/F ~ = -

1/F 100.98 = 100.98 m2 100.98 m2

Eaisp

1/F 5.4 x 23.35 = 126.09 m2 126.09

External wall at rarop omitted 5.4 x 40 » 21.60 m2

Panel Areas

G/F ' . - =

1/F 160.00 - (37.08 + 0.34 + 100.98 + 21.60) «

A55


Calculation of SU' Value of Composite Hall/Roofand Details of Other Values

Sheet No. A 9


Physical data of Opaque *WalI/Roof

Facade Orientation facing South (Podium) Solar Factor (SF) is 191

*Wal I/Roof Code Mo.



Conductivity W/m°C

Density kg/m^

Thickness m

Absorptivity (a)


Conductivity S/»°C

Density kg/ir5

Thickness m


Conductivity W/m°C

Density kg/us J

Thickness m


Conductivity W/m°C

Density kg/mj

Thickness m


Conductivity W/m°C

Density kg/m-5

Thickness m


Conductivity W/m°C

Density kg/mj

Thickness mAbsorptivity a%Uf value of composite*Wall/Roof

Area of *Wall/Roof m2

Density of composite*Wall/Raof kg/1*

Equivalent temperaturedifference (TDEQ)

*VR1Beams & Cols

1/Fwtiite mosaic

tiles1.50

2500

0.005

0.58

cement render0.72

1860

0.01ReinforcedConcrete

2.16

2400

0.60

white semi g

on gypsum0.38

1120

0.01

0.30

1.51

37.08

1482

1.40

*V*5Ranp 1/F

r. concrete

2.16

2400

0.30

0.65

loss paint

Blaster0.38

1120

0.01

0.30

1.97

126.09

731

4.10

*W7/R?Stair Wall

1/Fwnite ncsaic

tiles1.50

2500

0.005

0.58

cement render0.72

1860

0.01ReinforcedConcrete

2.16

2400

3.00

0.69

0.34

7231

1.40

*W /R



A56


Windov/Rooflight Schedule


Building address Typical Commercial Building..


Facade Orientation facing South (Podiuii) Solar Factor (SF) is 191

Window/Roof light Code No*


Glazing type

Thickness n




Area of glazing ra2

*P1/RL1

1/Funshaded

plain

0.012

0.90

-

—

100.98

*F2/RL2 *F3/RL3 *F4/RL4

Physical data on *vindo¥/rooflight


lindow/Roof light Code No.

Location of *iindow/Rooflight

Glazing type

Thickness in



External ShadingMultiplier (BSM)

Area of glazing m*

*F1/RL1 *F2/RL2 *F3/RL3 *F4/RL4



A57



Sheet No. C BD let 2/ / /


Facade Orientation facing South (Podium)

Opaque *WalIs/Roofs

CodeNo.

Wl

W2

W3

Description

Beams and Cols G/F&l/F

Stair Wall 1/F

Ramp 1/F

Subtotals

*V*r

37.08

0.34

126.09

163.51

U

1.51

0.69

1.97

a

0.58

0.58

0.65

TDEQ

1.40

1.40

4.10*

(A) Heat Gain

SUffi

45.46

0.19

611.98

657.63

* Value interpolated from vert* and horizontal conponents,

(C)

Fenestration

CodeNo.

PI

Description

1/F

Subtotals

*Af¥/Afr

100.98

100.98

SC

0.90

ESM

-

SF

191

(B) Heat Gain

Sun

17,358.46

17,358.46 (1)

Gross Heat Gain (C + D) 18.016.09

Gross Area (A + B) 264.49

C + DOTTV = 68.12 W/n*

A + B



A58


Summary of OTTV of Building Envelope

Sheet No. D


BD Ref. 2/

Total Envelope Heat Gain (*Tower/Podium)

FacadeOrientation

a. East

b. North

c. West

d. South

e.

f.

Subtotal

Roof

'a. Main

b.. 15/F

Subtotal

Gross Areafront

Fora OTTV3

344.00

320.00

366.00

264.49

1,294.49 (E)

Carpark under - nc

(F)

Gross HeatGain fromForm OTTV3

31,629.06

22,492.56-

14,407.39

18,016.09

86,545.10 (6)

>n accountable

(H)

*Tower/Podium Walls OTTV = — = 66.86 W/m*E

H*Tower/Podium Roofs OTTV = — =

FW/JB*

G + H*Tower/Podium OTTV =

E + FW/m*



HK 693.832 C66

Code of practice forI 1 1 "Hio-rtno 1

/J • "_"?' """" "

Ml1

1

T /•/i LC J "fc,-T--- -A!N

1

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