orcst - additiona l work 1

PORT AUTHORITY OF JAMAICA

ITEM DESCRIPTION QUANTITY UNIT RATE ADDITION

General & Preliminary Items

A a) Contractors All Risk Sum 600,000.00 -

B b) Public Liability SumC c) Employers Liability Sum

D Sum 100,000.00 -

E Sum 550,000.00 -

F Allow for mobilisation of equipment and site personnel Sum 400,000.00 -

G Programme Sum 40,000.00 -

H Setting Out Sum 10,000.00 -

J Sum 250,000.00 -

K PS 50,000.00

L Sum 250,000.00 -

M Sum 200,000.00 -

N Sum 80,000.00 -

O Sum 50,000.00 -

2,580,000.00 0.00

BILL NO. 1 Cont'd

A Sum 200,000.00

B Allow for the working, curing and testing of concrete test cubes. Sum 80,000.00

C

2,530,000.00

2,860,000.00 0.00

CONTRACT SUM

Listed under this bill are items for which, in opinion of the Engineer, a separate charge is appropriate and becomes due at the times stated. The sums are entered against these items shall be fixed lumps sums not subject to works. All extra costs requir

Allow for the provision of the following insurances for the works in accordance with the Condition of Contracts

Allow for provisons of Performance Bond of 10% for duration of construction of the works

Allow for mobilisation of all necessary tools, equipment and personnel site, inclusive of working platform or pontoon barge and necessary mooring or anchoring equipment for safe operation

Allow for all safety and Personal Protective Equipment required for the workforce including that required for working over water

Allow Provisional Sum of $50,000.00 for the supply and installation of signs as per Engineers instructions

Welfare and sanitary facilities, installation of temporary services, false work, platforms, boat, tenting for protection of works and removal on completion of contract.

Allow for modification to property fence and entrance canopy so as to create access for equipment & make good on completion

Allow for taking all precaution to avoid any damage whatsoever to existing infrastructures services.

Allow for providing samples of material proposed to be used in the Contract which when requested by the Engineer shall be furnished without delay.

TOTAL BILL NO. 1 - FIXED PRELIMINARIES Add#3 - BQ/2 carried forward

Allow for providing and erecting in approved locations proper sheds for use of the workmen, storage and protection of materials (those for cement having floor raised at least 12" from the ground) and for clearing same away upon completion of construction.

The Contractor shall enter in the spaces below the clause numbers of the conditions of Contract or Specification against which to cover any special risk, liabilities and obligations not described above and which cannot be included in the rates. The amoun

TOTAL BILL NO. 1 - FIXED PRELIMINARIES Add#3 - BQ/2 - brought forward

TOTAL BILL NO. 1 - FIXED PRELIMINARIES carried to summary

BILL NO. 2

Time Dependent Preliminaries

A Temporary Services (eg. water, power, phone etc) 10 Week 32,500.00 60,000.00

B Lighting, site security and keeping site clean at all times 10 Week 26,750.00 60,000.00

Site Supervsion and management.

C List made up of total figure below: 10 Week 135,000.00 500,000.00

Item Amt/Week

EngineerSupervisor

620,000.00 0.00

REPAIR TO PILE CAPS

BILL NO. 3 Pile Caps

Repair to Pile Caps on Grid Lines B, C and E

A 4 140,000.00 560,000.00

B 4 8,500.00 34,000.00

C 30 Kg 3,600.00 108,000.00 558,000.00

D 4 13,000.00 52,000.00

E 0.6 58,000.00 34,800.00 46,400.00

F PS 150,000.00

G 4 2,000.00 8,000.00

Repair to Pile Caps on Grid Lines B, CD, , E, N, P and V

H 100 m 11,000.00 1,100,000.00

J 2 no. 112,000.00 224,000.00

2,270,800.00 604,400.00

TOTAL BILL NO. 2 - TIME DEPENDENT PRELIMINARIES

Complete repairs as outlined to Pile Caps and concrete pile muff protection over water depth between 1m and 6m

Remove delaminated and spalling concrete to sides of pile cap to depth of 100mm below reinforcement and clean with potable water using high pressure water jet equipment during low tide level

m2

Allow for cleaning of rebars with wet sand blasting, high pressure potable water jet and mechanical cleaning to White Metal (SSPC-SP5) (NACE1). (Corroded portion of rebar exposed to damaged face of pile caps)

m2

Allow for the replacement of corroded rebar where required with 16mm diameter bars x 1m, bent and welded to existing rebar as per drawing sheet 2a and as instructed by the Engineer and coated with epoxy zinc chromate primer to exposed surfaces

Supply and install wrought formwork to soffit and sides of pile cap. (for minimum concrete thickness of 150mm) inclusive of supports and bracing and striking on completion

m2

Place design concrete mix containing chloride inhibitors and super plastisizers having a 28 day cube strength of 30 Mpa

m3

Allow Provisional Sum of $150,000.00 for supply and installation of sacrificial anodes ( to be used as directed by the Engineer and to removed in whole or part if unused)

Allow for the application of repair mortor to surface of repaired concrete beam to seal and close any cracks which may appear.

m2

Chase cracks to minimum depth fo 30mm by 60mm wide and repair with approved masonary repair concrete such Phoscrete supplied by PowerGen Limited (or similar product approved by the Engineer)

Clean during low tide exposed concrete and steel reinforcement to 2no. Pile Head supporting Pile Cap D appox 0.4 x 0.45m x 2no at splash zone by water blasting with potable water and apply layers of phoscrete concrete as per manufacturer instruction to ac

TOTAL BILL NO. 3 - REPAIRS TO PILE CAP carried to summary

REPAIR TO PILE CAPSBILL NO. 4

Repairs to Deck Support Beams

A 8 no. 235000 1,880,000.00

B 8 no. 31,500.00 252,000.00

C 36 8,500.00 306,000.00

D Supply and install wrought fromwork to soffit and side of beam. 84 13,000.00 1,092,000.00

E 3 58,000.00 174,000.00

F 42 2,000.00 84,000.00

G 8 no. 50,000.00 400,000.00

H PS 600,000.00

To apply Nitobond SBR as bonding agent to deck beams - 19,375.00

3

TOTAL BILL NO. 4 - REPAIRS TO DECK SUPPORT BEAMS 4,788,000.00 19,375.00


Painting and Protective Coatings

A item 100,000.00

B 192 8,500.00 1,632,000.00

C 192 7,100.00 1,363,200.00

D 192 1,000.00 192,000.00

.E PS 300,000.00

3,587,200.00 3,587,200.00

Repair/Reinstatement of damage to Precast Double Tees on Grid Lines 5, 6, 7 & 8

Allow for temporary support and work access to each Double Tee sections (approx. 14m length) in water depth varing between 1m and 6m deep, during beam repairs

Remove 0.5 m2 delaminated and spalling concrete to expose at least 150mm of tendon on either side of damaged double Tee beam

Sandblast reinforcement tendons to remove corrosion and apply zinc chromate primer to exposed tendons

m2

m2

Place design concrete mix containing chloride inhibitors etc having a 28 day cube strength of 30 Mpa

m3

Allow for the application of repair mortor to surface of repaired concrete beam to complete repairs and seal any cracks which may appear on surface of ccncrete.

m2

Allow for the temporary work access platform to complete repairs to cracks in Double Tee beams in water depths 1m to 6m

Include Provisional Sum of $600,000.00 to be used as instructed by the Engineer. To be deducted in whole or part if unused.

Alternative (Rate Only)

Apply shot crete or build up concrete having a 28 day cube strength of 30 Mpa to complete beam repair around reinforcement tendons inclusive of final surface render finish.

m3

Allow for the installation of protective drop cloth or equivalent method to facilitate the collection of sand and debris at each location resulting from the sandblasting of the concrete surface (measured seperately)

Remove existing paint finish to to sides and soffit of 8 no. pile caps by wet sand blasting or water blasting as required

m2

Apply approved corrosion inhibiting coating to the previously prepared and new concrete surfaces of 8no. Pile caps as per manufacturers instruction

m2

Repaint exterior surfaces (sides and soffit) of 8no. pile caps with approved exterior marine grade paint finish, colour to match existing

m2

Allow Provisional Sum of $300,000.00 to be used as instructed by Engineer. To be removed in whole or part if not used

TOTAL BILL NO. 5 - PAINTING & PROTECTIVE COATINGS carried to summary

REPAIR TO DAMAGED T PIERBILL NO. 6

DEMOLITION AND ALTERATION

A 25.00 4000 100,000.00

B 13.50 m 46000 621,000.00

C Cart away spoil SUM 100,000.00

PRE-CAST REINFORCED CONCRETE

Reinforced Concrete 4500 PSI in:

D 3.00 Cub. M 240,000.00 720,000.00

Steel Reinforcement

E 10 mm diameter Mild steel rod reinforced 415.00 Kg. 260.00 107,900.00

F 16 mm diameter high tensile rod reinforced 322.00 Kg. 300.00 96,600.00

G 25 mm diameter high tensile rod reinforced 660.00 Kg. 350.00 231,000.00

25 mm diameter high tensile rod reinforced( Dowel) 54.00 Kg 78,510.00

Formwork and support to:-

H Side of beam 23.00 Sq. M 4,000.00 92,000.00

J Ditto bottom of beam 6.00 Sq. M 3,000.00 18,000.00

K PS 650,000.00

2,736,500.00 78,510.00

REPAIR TO DAMAGED T PIER

BILL NO. 7

IN-SITU REINFORCED CONCRETE

Reinforced Concrete Pile Cap

A Pile Cap - Concrete 31 M.Pa 0.30 Cub. M 38,000.00 11,400.00

B 12 mm diameter mild steel rod reinforced 21.00 Kg. 300.00 6,300.00

C 16 mm diameter high tensile rod reinforced 97.00 Kg. 320.00 31,040.00

D Sides of pile cap 2.00 Sq. M 13,000.00 26,000.00

In-situ Reinforced Concrete Slab

E 8.00 Cub. M 33,000.00 264,000.00

F 10 mm diameter mild steel rod reinforced 514.00 Kg. 260.00 133,640.00

Nitobond SBR bonding Agent 38,125.00

472,380.00 38,125.00

The demolition of existing in-situ slab between centre lines 3-4 and A-B . The removal and replacement of two "L" -shaped beams and repair one pile cap at 3B.

Carefully remove following damaged concrete section of pier inclusive of all false work and safety measures

22'-0" x 12'-0" x 8" section of reinforced concrete slab supported on 8" thick precast concrete slabs (to be reused) mounted on damaged reinforced concrete beams (measured seperately)

m2

Damaged 18"x16"x22' reinforced concrete beams mounted on pile caps as supports to precast slab and insitu slab. Insitu slab to be removed and measured seprately.

This section covers the replacement of 2 No. Pre-cast reinforced concrete beam and in-situ 200mm concrete slab. Prices should include for all costs involved in order to fulfill every requirement of the design specification and any particular site conditio

Precast Reinforced Concrete Beam fixed to top of piles as per

drawing

Include the PROVISIONAL SUM of $650,000.00 for

Contingencies to be used as directed by the Engineer and to be

deducted in whole or in part if not required:-

TOTAL BILL NO. 6 - REPAIR TO DAMAGED T PIER carried to summary

200 mm thick slab laid on Pre-Cast slab (measured seperately) finished with broom finish.

TOTAL BILL NO. 7 - IN-SITU REINFORCED CONCRETE carried to summary

E168

devans: 110

E170

devans: 296 kg


BILL NO. 8

SHORE PROTECTION - BOULDERS

A 600 Cub. M 5,000.00 3,000,000.00

B Ditto with boulder 0.3m - 0.8m diameter ( Provisional) 40 Cub. M 5,000.00 200,000.00

C 80 Cub. M 4,000.00 320,000.00

3,520,000.00 -

SUMMARY

PRELIMINARIES

1 Bill No.1 - FIXED PRELIMINARIES 2,810,000.00

2 Bill No.2 - TIME DEPENDENT PRELIMINARIES 620,000.00

REPAIRS TO PILE CAPS

3 Bill No.3 - REPAIRS TO PILE CAPS 2,270,800.00

4 Bill No.4 - REPAIRS TO DECK SUPPORT BEAMS 4,788,000.00

5 Bill No.5 - PAINTING & PROTECTIVE COATINGS 3,587,200.00


6 Bill No.6 - DEMOLITION AND ALTERATION 2,736,500.00

7 Bill No.7 - IN-SITU REINFORCED CONCRETE 472,380.00

8 Bill No.8 - SHORE PROTECTION - BOULDERS 3,520,000.00

GRAND TOTAL 20,804,880.00

PRELIMINARIESREPAIRS TO PILE CAPSREPAIR TO DAMAGED T PIER

To supply material , labour to place boulders 0.9m and 1.2m in diameter as rock armouring to shoreline in accordance with specifications (Provisional)

Carefully reclaim boulders(0.9m and 1.2m in diameter) from seabed in a depth of water not exceeding 1.5m for repacking in rock armouring (Provisional)

TOTAL BILL NO. 8 - SHORE PROTECTION - BOULDERS carried to summary

GRAND TOTAL - TO STANDARD FORM: CONTRACTORS BID


OMISSION

-

-

-

-

-

-

-

-

-

-

-

2,580,000.00

0.002,580,000.00

PROJECTED COST

60,000.00

60,000.00

500,000.00

0.00620,000.00

108,000.00

34,800.00

150,000.00

292,800.002,582,400.00

600,000.00

0.00

600,000.00 4,207,375.00

3,587,200.00 3,587,200.00

650,000.00

650,000.00 2,165,010.00

0.00510,505.00

- 3,520,000.00

19772490.00

A

B

C

D

E

F

G

H

J

A

B

C

D

E

F

G

H

A

B

C

D

E

A

B

C

D

E

F

G

H

J

K

A

B

C

D

E

F

A

B

C

3

4

5

6

7

8

REPAIR TO PILE CAPS

BILL NO. 3

Pile Caps

Repair to Pile Caps on Grid Lines B, C and E

Kg

PS

Repair to Pile Caps on Grid Lines B, CD, , E, N, P and V

m

no.

Complete repairs as outlined to Pile Caps and concrete pile muff protection over water depth between 1m and 6m


m2

Allow for cleaning of rebars with wet sand blasting, high pressure potable water jet and mechanical cleaning to White Metal (SSPC-SP5) (NACE1). (Corroded portion of rebar exposed to damaged face of pile caps)

m2


Supply and install wrought formwork to soffit and sides of pile cap. (for minimum concrete thickness of 150mm) inclusive of supports and bracing and striking on completion

m2


m3

Allow Provisional Sum of $150,000.00 for supply and installation of sacrificial anodes ( to be used as directed by the Engineer and to removed in whole or part if unused)


m2




Repairs to Deck Support Beams

no.

no.

Supply and install wrought fromwork to soffit and side of beam.

no.

PS

TOTAL BILL NO. 4 - REPAIRS TO DECK SUPPORT BEAMS

REPAIR TO PILE CAPS

BILL NO. 5

Painting and Protective Coatings

TOTAL BILL NO. 3 - REPAIRS TO PILE CAP carried to summary

Repair/Reinstatement of damage to Precast Double Tees on Grid Lines 5, 6, 7 & 8




m2

m2


m3


m2


Include Provisional Sum of $600,000.00 to be used as instructed by the Engineer. To be deducted in whole or part if unused.

Alternative (Rate Only)

Apply shot crete or build up concrete having a 28 day cube strength of 30 Mpa to complete beam repair around reinforcement tendons inclusive of final surface render finish.

m3

item

PS


BILL NO. 6DEMOLITION AND ALTERATION

m

Cart away spoil SUM

PRE-CAST REINFORCED CONCRETE

Reinforced Concrete 4500 PSI in:

Precast Reinforced Concrete Beam fixed to top of piles as per drawing Cub. M

Allow for the installation of protective drop cloth or equivalent method to facilitate the collection of sand and debris at each location resulting from the sandblasting of the concrete surface (measured seperately)


m2


m2


m2

Allow Provisional Sum of $300,000.00 to be used as instructed by Engineer. To be removed in whole or part if not used

TOTAL BILL NO. 5 - PAINTING & PROTECTIVE COATINGS carried to summary

The demolition of existing in-situ slab between centre lines 3-4 and A-B . The removal and replacement of two "L" -shaped beams and repair one pile cap at 3B.

Carefully remove following damaged concrete section of pier inclusive of all false work and safety measures


m2


This section covers the replacement of 2 No. Pre-cast reinforced concrete beam and in-situ 200mm concrete slab. Prices should include for all costs involved in order to fulfill every requirement of the design specification and any particular site conditio

Steel Reinforcement

10 mm diameter Mild steel rod reinforced Kg.

16 mm diameter high tensile rod reinforced Kg.


Formwork and support to:-

Side of beam Sq. M

Ditto bottom of beam Sq. M

PS


BILL NO. 7

Include the PROVISIONAL SUM of $650,000.00 for Contingencies to be used

as directed by the Engineer and to be deducted in whole or in part if not

required:-

TOTAL BILL NO. 6 - REPAIR TO DAMAGED T PIER carried to summary

IN-SITU REINFORCED CONCRETE

Reinforced Concrete Pile Cap

Pile Cap - Concrete 431 M.Pa Cub. M

12 mm diameter mild steel rod reinforced Kg.


Sides of pile cap Sq. M

In-situ Reinforced Concrete Slab

Cub. M

10 mm diameter mild steel rod reinforced Kg.

200 mm thick slab laid on Pre-Cast slab (measured seperately) finished with broom finish.

TOTAL BILL NO. 7 - IN-SITU REINFORCED CONCRETE carried to summary


BILL NO. 8

SHORE PROTECTION - BOULDERS

Cub. M

Ditto with boulder 0.3m - 0.8m diameter ( Provisional) Cub. M

Cub. M

To supply material , labour to place boulders 0.9m and 1.2m in diameter as rock armouring to shoreline in accordance with specifications (Provisional)

Carefully reclaim boulders(0.9m and 1.2m in diameter) from seabed in a depth of water not exceeding 1.5m for repacking in rock armouring (Provisional)

SUMMARY

PRELIMINARIES

Bill No.1 - FIXED PRELIMINARIES

Bill No.2 - TIME DEPENDENT PRELIMINARIES

TOTAL BILL NO. 8 - SHORE PROTECTION - BOULDERS carried to summary


Bill No.3 - REPAIRS TO PILE CAPS

Bill No.4 - REPAIRS TO DECK SUPPORT BEAMS

Bill No.5 - PAINTING & PROTECTIVE COATINGS


Bill No.6 - DEMOLITION AND ALTERATION

Bill No.7 - IN-SITU REINFORCED CONCRETE

Bill No.8 - SHORE PROTECTION - BOULDERS

GRAND TOTAL

PRELIMINARIES



GRAND TOTAL - TO STANDARD FORM: CONTRACTORS BID

D&S

20,500.00 82,000.00 130,600.00 560,000.00 48600.00

15,900.00 63,600.00 18,500.00 34,000.00 (45100.00)

16,000.00 480,000.00 18,750.00 108,000.00 (461250.00)

15,000.00 60,000.00 58,000.00 52,000.00 (2000.00)

48,000.00 28,800.00 25,500.00 34,800.00 (3300.00)

150,000.00 150,000.00 150,000.00 0.00

15,500.00 62,000.00 136,840.00 8,000.00 74840.00

3,500.00 350,000.00 155,000.00 1,100,000.00 (195000.00)

120,000.00 240,000.00 125,040.00 224,000.00 (114960.00)

1,516,400.00 818,230.00 2,270,800.00 (698170.00)

100000 800,000.00 494,560.00 1,880,000.00 (305440.00)

15,500.00 124,000.00 386,600.00 252,000.00 262600.00

10,900.00 392,400.00 189,540.00 306,000.00 (202860.00)

15,000.00 1,260,000.00 1,218,000.00 1,092,000.00 (42000.00)

48,000.00 144,000.00 127,500.00 174,000.00 (16500.00)

15,500.00 651,000.00 1,436,820.00 84,000.00 785820.00

60,000.00 480,000.00 494,560.00 400,000.00 14560.00

600,000.00 600,000.00 600,000.00

- 750,000.00 750000.00

4,451,400.00 5,697,580.00 4,788,000.00 1246180.00

350,000.00 550,000.00 100,000.00 200000.00

8,900.00 1,708,800.00 630,720.00 1,632,000.00 (1078080.00)

3,500.00 672,000.00 680,064.00 1,363,200.00 8064.00

2,500.00 480,000.00 893,760.00 192,000.00 413760.00

300,000.00 300,000.00 300,000.00

3,510,800.00 3,054,544.00 3,587,200.00 (456256.00)

80,000.00 1,850,000.00 100,000.00 1770000.00

53,000.00 587,250.00 621,000.00 534250.00

10,000.00 245,000.00 100,000.00 235000.00

31,250.00 93,750.00 165,000.00 720,000.00 71250.00

82.00 34,030.00 134,875.00 107,900.00 100845.00

82.00 26,404.00 123,970.00 96,600.00 97566.00

82.00 54,120.00 254,100.00 231,000.00 199980.00

300.00 6,900.00 241,500.00 92,000.00 234600.00

300.00 1,800.00 87,000.00 18,000.00 85200.00

650,000.00 650,000.00 650,000.00

1,010,004.00 4,338,695.00 2,736,500.00 3328691.00

26,500.00 7,950.00 16,500.00 11,400.00 8550.00

82.00 1,722.00 6,825.00 6,300.00 5103.00

82.00 7,954.00 37,345.00 31,040.00 29391.00

3,300.00 6,600.00 21,000.00 26,000.00 14400.00

26,500.00 212,000.00 440,000.00 264,000.00 228000.00

82.00 42,148.00 167,050.00 133,640.00 124902.00

278,374.00 688,720.00 472,380.00 410346.00

4,000.00 2,400,000.00 6,900,000.00 3,000,000.00 4500000.00

3,800.00 152,000.00 460,000.00 200,000.00 308000.00

1,500.00 120,000.00 600,000.00 320,000.00 480000.00

2,672,000.00 7,960,000.00 3,520,000.00 5288000.00

3,900,000.00 15,056,100.00 2,810,000.00 11156100.00

1,942,500.00 6,306,300.00 620,000.00 4363800.00

1,516,400.00 818,230.00 2,270,800.00 (698170.00)

4,451,400.00 5,697,580.00 4,788,000.00 1246180.00

3,510,800.00 3,054,544.00 3,587,200.00 (456256.00)

1,010,004.00 4,338,695.00 2,736,500.00 3328691.00

278,374.00 688,720.00 472,380.00 410346.00

2,672,000.00 7,960,000.00 3,520,000.00 5288000.00

19,281,478.00 43,920,169.00 20,804,880.00 24638691.00

5,842,500.00 21,362,400.00 3,430,000.00 15519900.00

9,478,600.00 9,570,354.00 10,646,000.00 91754.00

3,960,378.00 12,987,415.00 6,728,880.00 9027037.00

19,281,478.00 43,920,169.00 20,804,880.00 24638691.00

P&S

478000.00

(29600.00)

(372000.00)

(8000.00)

6000.00

0.00

(54000.00)

750000.00

(16000.00)

754400.00

1080000.00

128000.00

(86400.00)

(168000.00)

30000.00

(567000.00)

(80000.00)

336600.00

(250000.00)

(76800.00)

691200.00

(288000.00)

76400.00

20000.00

568000.00

90000.00

626250.00

73870.00

70196.00

176880.00

85100.00

16200.00

1726496.00

3450.00

4578.00

23086.00

19400.00

52000.00

91492.00

194006.00

600000.00

48000.00

200000.00

848000.00

(1090000.00)

(1322500.00)

754400.00

336600.00

76400.00

1726496.00

194006.00

848000.00

1523402.00

(2412500.00)

1167400.00

2768502.00

1523402.00

SELECTED RATES- T-PIER REPAIRS

Description unit Engineer's Est Diving & Salvage

m² 3200 74,000.0 4,000.0

m 3926 43,500.0 46,000.0

10 mm diameter Mild steel rod reinforced kg 220 325.0 260.0

16 mm diameter high tensile rod reinforced kg 220 385.0 300.0

25 mm diameter high tensile rod reinforced kg 220 385.0 350.0

Formwork and support

Side of beam Sq. M 3000 10,500.0 4,000.0

Bottom of beam Sq. M 3000 14,500.0 3,000.0

200 mm thick slab laid on Pre-Cast slab (measured seperately) finished with broom finish. m³ 26500 55,000.0 33,000.0

PERCENTAGE DIFFERENCE BETWEEN THE TENDERED RATES AND THE ENG.'S ESTIMATE


m² 3200 2212.5% 25.0%

m 3926 1008.0% 1071.7%

10 mm diameter Mild steel rod reinforced kg 220 47.7% 18.2%

16 mm diameter high tensile rod reinforced kg 220 75.0% 36.4%

25 mm diameter high tensile rod reinforced kg 220 75.0% 59.1%


Side of beam Sq. M 3000 250.0% 33.3%

Bottom of beam Sq. M 3000 383.3% 0.0%

200 mm thick slab laid on Pre-Cast slab (measured seperately) finished with broom finish. m³ 26500 107.5% 24.5%

TENDERED AMOUNT COMPARED WITH THE ENG.'S ESTIMATE FOR SELECTED ITEMS.


m² 80,000.00 $1,850,000.0 $100,000.0

m 53,000.00 $5,872.5 $621,000.00

10 mm diameter Mild steel rod reinforced kg 91,300.00 $134,875.0 $107,900.0

16 mm diameter high tensile rod reinforced kg 70,840.00 $123,970.0 $96,000.0

25 mm diameter high tensile rod reinforcedkg 145,200.00 $254,100.0 $231,000.0


Side of beam Sq. M 69,000.00 $241,500.0 $92,000.0

Bottom of beam Sq. M 18,000.00 $87,000.0 $18,000.0

200 mm thick slab laid on Pre-Cast slab (measured seperately) finished with broom finish. m³ 256,000.00 $440,000.0 $264,000.0

Pavement & Structures









SELECTED TASKS- %DIFF. BETWEEN ENG.'S EST. AND BID AMOUNT

Description unit

20,500.00 32,650.00 140,000.00

15,900.00 4,625.00 8,500.00

kg 16,000.00 625.00 3,600.00

15,000.00 14,500.00 13,000.00

48,000.00 42,500.00 58,000.00

15,500.00 34,210.00 2,000.00

m 3,500.00 1,550.00 11,000.00

no 120,000.00 62,520.00 112,000.00

no 100,000.00 61,820.00 235,000.00

no 15,500.00 48,325.00 31,500.00

10,900.00 5,265.00 8,500.00

Supply and install wrought fromwork to soffit and side of beam. 15,000.00 14,500.00 13,000.00

48,000.00 42,500.00 58,000.00

15,500.00 34,210.00 2,000.00

no 60,000.00 61,820.00 50,000.00

Item 350,000.00 550,000.00 100,000.00

8,900.00 3,285.00 8,500.00

3,500.00 3,542.00 7,100.00

2,500.00 4,655.00 1,000.00

Engineer's Est

Diving & Salvage



m²

Allow for cleaning of rebars with wet sand blasting, high pressure potable water jet and mechanical cleaning to White Metal (SSPC-SP5) (NACE1). (Corroded portion of rebar exposed to damaged face of pile caps) m²


Supply and install wrought formwork to soffit and sides of pile cap. (for minimum concrete thickness of 150mm) inclusive of supports and bracing and striking on completion m²

Place design concrete mix containing chloride inhibitors and super plastisizers having a 28 day cube strength of 30 Mpa m³

Allow for the application of repair mortor to surface of repaired concrete beam to seal and close any cracks which may appear. m²






m²

m²


m³


m²


Allow for the installation of protective drop cloth or equivalent method to facilitate the collection of sand and debris at each location resulting from the sandblasting of the concrete surface


m²


m²


m²

Description unit

82,000.00 59.27%

m² 63,600.00 -70.91%

kg 480,000.00 -96.09%

m³ 28,800.00 -11.46%

m² 62,000.00 120.71%

m 350,000.00 -55.71%

no 240,000.00 -47.90%

no 800,000.00 -38.18%

no 124,000.00 211.77%

m² 392,400.00 -51.70%

Item 350,000.00 57.14%

m² 1,708,800.00 -63.09%

m² 480,000.00 86.20%

Engineer's Est

Diving & Salvage

% DIFF. BETWEEN ENGINEER'S EST. & BID SUM


m²Allow for cleaning of rebars with wet sand blasting, high pressure potable water jet and mechanical cleaning to White Metal (SSPC-SP5) (NACE1). (Corroded portion of rebar exposed to damaged face of pile caps)









Allow for the installation of protective drop cloth or equivalent method to facilitate the collection of sand and debris at each location resulting from the sandblasting of the concrete surface




ITEM DESCRIPTION QUANTITY UNIT RATE EST. SUM

General & Preliminary Items

General & Preliminary Items $2,000,000.00

REPAIR TO STEM OF DECK BEAMS

STEM OF BEAMS

A 40 14,000.00 $560,000.00

B 20 M 1,800.00 $36,000.00

C 0.8 M³ 58,000.00 $46,400.00

D 21 m 6,000.00 $126,000.00

E 56 21000 $1,176,000.00

REPAIR TO SOFFIT OF BEAMS

Repairs to Deck Soffit of Beams

A 20 no. 235000 $4,700,000.00

B 29 no. 18,200.00 $527,800.00

C 8 4,500.00 $36,000.00

D To apply Nitobond SBR as bonding agent to deck beams 6 6,000.00 $36,000.00

E 0.1 58,000.00 $5,800.00


Remove delaminated and spalling concrete to a depth ( > 10 MM) so as to expose reinforcement and clean with potable water .

M2

Allow for cleaning of rebars with wire brush to remove all corrosion and wash with potable water. (Corroded portion of rebar exposed to damaged face of stem)

Place design concrete mix containing chloride inhibitors having a 28 day cube strength of 30 Mpa

Chase cracks to minimum depth fo 10mm e and repair with approved masonary repair concrete such Phoscrete supplied by PowerGen Limited (or similar product approved by the Engineer)

Allow for removing concrete from defective area (0.07 sq. m) of beam stem, clean rebars with wire brush to remove all corrosion and treat with zinc chromate. place design concrete mix containing chloride inhibitors having a 28 days strength no less than 30 MPa (Corroded portion of rebar exposed to damaged face of stem). apply Nitobond SBR as per manufacturer's specification.

M2

Allow for temporary support and work access to each Double Tee sections (approx. 14m length) in water depth varing between 1m and 6m deep, during Soffit repairs

Remove 0.2 m2 delaminated and spalling concrete to a minimum depth of 10 mm so as to expose rebars of the soffit of deck beam.

Wire brush rebars to remove corrosion, wash with potable water and coat with zinc chromete

m2

m2


m3

REPAIR TO PILE CAPS

H 10 M 11,000.00 $1,100,000.00

B 30 112,000.00 $3,360,000.00

30 1,000.00 $30,000.00

$13,710,000.00


Clean during low tide exposed concrete and steel reinforcement to 30no. Pile Head supporting Pile Cap appox 0.4 x 0.45m x 30 no at splash zone by water blasting with potable water and apply layers of phoscrete concrete as per manufacturer instruction to ac

m3


M2

orcst - additiona l work 1

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