cdp hospital service design report pdf

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    Building services design of the Hospital

    Introduction

    In this project, we are proposing to construct a new hospital in this area. This will be athree story building. But we are keeping provision for future development up to five

    stories.

    This hospital is consists of many features that are very useful for the villagers. It is

    provided with Accident and Emergency treatment unit, X-ray room, Dental unit,

    Consultant unit, Childrens Ward, Female Ward, Male ward, Mandatory Ward and

    Delivery section, ICU and Operation Theater.

    In the design, special care was given to differently able people. They were provided

    with special Wash rooms with special facilities. These washrooms are present in each

    floor.

    Cold water supply system and Hot water supply system are the most critical services

    in this building. Both above ground and below ground waste water disposal systems were

    provided. Since this is situated in Hatton, both Air conditioning and heating required for

    the building. They were provided to the appropriate spaces. Electrical and telephone

    system is another service present in this building.

    This building is consists of a wet riser and sprinkler firefighting system. Smoke detectors

    were used as fire detectors. Refuse chute is also included to the building.

    Bio-gas system had introduced as an alternative power generation method. Since

    this area have plenty of water, no need of rain water harvesting. A Roof garden is

    maintained on the second floor top level. Few service ducts were provided to the building.Service lines were laid along the ceiling. Integrated system was adapted to this building.

    There are few more services were included in this hospital. Passive concept was

    taken in to the account in the design and it was design as a green building. Lot of

    sustainable methods had adapted to this hospital design.

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    Circulation

    Vertical circulation

    Stair case

    Two stair cases were provided to this building. Both are identical. This is the main

    access for the upper floors. Visitors supposed to use stair case. Dimensions and details of

    the stair case are given below.

    Floor to floor height = 4500 mm

    Total width of core = 3500 mm

    Length of the core = 5000 mm

    Length of the landing = 1500 mm

    Width of stair case = 1750 mm

    Rise = 175 mm

    Tread = 290 mm

    Fig.1 Stair case

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    Lift

    One lift has provided for this building. It is not for visitors. It is mainly use for the

    patients and for differently able people. Size of the lift will be 3500 mm 2700 mm. This

    size was selected because it should be adequate to carry a trolley with a patient. And also

    Wheel chairs should be able to carry from this lift. Staff can carry their stuff from the lift.

    Since there is a lift, there is no ramp provided for differently able people. There is a

    ramp in ground floor to give access to ground floor for differently able people.

    3500 mm

    2700 mm

    Fig.2 Arrangement of the lift

    Horizontal circulation

    Corridors and passages were kept in 2.5 m width because they should be adequate

    to exchange two trolleys or two wheel chairs. In ground floor, a ramp has provided for the

    differently able people who can use that to enter the ground floor.

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    Service Ducts (Integrated system)

    A Hospital has various kinds of services. Service ducts are essential to have a

    good services design. Few vertical service ducts were provided to this building. Some of

    them were for plumbing. Cold water pipes, Hot water pipes, Waste water pipes were sent

    through service ducts. Separate ducts were provided for electrical wires, telephone wires,

    network cables and other cables. Cable trays were provided through ceilings and some

    services lines were run through the ceiling. We are using an integrated system for wires

    and cables. An integrated system was also used for the plumbing. Ventilation ducts were

    provided for the places where they were necessary.

    Fig.3 Integrated system of services under a ceiling

    Fig.4 Intigrated service system through vertical ducts

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    Sanitary appliances

    Ground floor is consists of several bathrooms for the staff and for the general

    public. All the wards were provided with Washrooms and adequate number of appliances

    was provided for them. Each floor is consists with special washroom for differently able

    people. They were provided with special appliances and special facilities.

    Fig.5 Special arrangements for differently able people

    Following is the calculation to find the required number of sanitary appliances for the

    hospital staff.

    Number of beds = 105

    % of staff required = 38%

    Number of staff required = 105 38%

    = 40

    Assumption;

    Staff is consists of 15 males and 25 females. Therefore;

    Required number of WCs for females = 3

    Required number of WCs for males = 1

    Required number of Wash basins for females = 3

    Required number of Wash basins for males = 1

    Required number of Urinals for males = 1

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    In the design, building was provided;

    One gents washroom at Administration area with 1 WC, 1 Wash basin and 1 Urinal

    One Ladies washroom at Administration area with 1 WC and 1 Wash basin

    A washroom for Doctors restroom with two WCs and a Wash basin

    A washroom for Nurses restroom with two WCs and a wash basin

    Altogether;

    6 WCs, 4 Wash basins and 1 urinal

    Here, one sink per washrooms was provided for cleaning purpose.

    Washrooms were provided for each ward, ICU and Mandatory unit with sufficient

    sanitary appliances. Hand railings were fixed near the appliances at the washrooms for

    differently able people.

    Hygienic effects were taken in to account when arranging the appliances and

    intervening ventilated space was provided in washrooms. Urinals were not provided to

    common washrooms in restrooms due to hygienic effect.

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    Cold water supply

    Cold water supply is the most critical service in a building. Since there is lack of

    design information about Hospitals, internet was referred to find data. Total per day cold

    water consumption was calculated according to the gathered data.

    Per capita cold water consumption = 250 gal per day/ per bed

    = 947 l per day/ per bed

    Number of beds = 105

    Total per day cold water demand = 105 947

    = 99435 l

    = 99.435 m3

    Cold water demand for hot water = 160 l per day/ per bed

    Total water demand for hot water = 160 105

    = 16800 l/ day

    = 16.8 m3

    Total per day water demand = 99.435 + 16.8

    = 116.235 m3

    According to the water demand, an overhead water tank was provided. Dimensions of the

    overhead tank as follows,

    Length = 5 m

    Width = 5 m

    Height = 5 m

    Free board = 0.2 m

    Water height = 4.8 m

    There for total capacity of the tank is 120 m3

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    Loading units of each floor

    Appliance Ground floor First floor Second floor

    Amount Loading total Amount Loading total Amount Loading total

    Unit loading Unit loading Unit loading

    units units units

    Wash basins 22 3 66 20 3 60 13 3 39

    Sink 5 5 25 2 5 10 4 5 20

    Bathing cubical

    (Shower)

    1 3 3 10 3 30 7 3 21

    Bib tap 9 5 45 10 5 50 5 5 25

    WC 13 2 26 10 2 20 7 2 14

    Bidet shower 13 1 13 10 1 10 7 1 7

    Water bath 1 10 10 1 10 10 2 10 20

    Total

    Table.1 Loading units of each floor

    Calculation to find the flow rate of the urinal as follows;

    Capacity of the urinal = 4.5 l

    Interval between usage = 20 min

    Flow rate = 4.5 60/20

    60 60

    = 0.0375 l/s

    Number of urinals in;

    Ground floor = 5

    First floor = 0

    Second floor = 2

    188 190 146

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    Assumptions;

    Bathing cubical are consist of a shower and a bib tap WC and bidet shower was considered separately PVC pipes were used for cold water supply Water tank is right above the male wards washroom Pipe lines coming from the tank is running through the duct at male wards

    washroom

    Pipe has a horizontal length of 0.5 m at the bottom level of the water tank Floor to floor height of the building is 4.5 m Spring water is collected to an underground sump and it is pumped to the overhead

    tank

    Showers are at the height of 2 m above from the slab top level and all otherappliances are at 1 m height above the slab top level of each floor

    Water tank is 4.5 m above the top level of the second floor

    Except the wash basins in washrooms, few more wash basins and sinks were

    provided for the places where they are necessary. One wash basin which is at the

    waiting area of ground floor is for the outside visitors and OPD patient.

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    Pipe sizing

    Required pipe sizing for each branch can be calculated and adequate diameter was

    selected by checking the available head of the appliances at the discharge point. Following

    is a specimen calculation which was done for the pipe .

    Assumption :- Inner diameter of 50 mm PVC pipes were used.

    For ground floor;

    Total loading units = 188

    Flow rate due to loading units = 2.0 l/s

    Flow rate from 5 urinals = 0.0375 l/s 5

    = 0.1875 l/s

    Total design flow rate = 2.0 + 0.1875

    = 2.1875 l/s

    For first floor;

    Total loading units = 190

    Design flow rate = 2.0 l/s

    For second floor;

    Total loading units = 146

    Flow rate due to loading units = 1.7 l/s

    Flow rate from 2 urinals = 0.0375 l/s 2

    = 0.075 l/s

    Number of;

    Stop valves = 1

    Elbows = 1

    Ts = 1

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    Pipe length = 9.0 + 0.5

    = 9.5 m

    Total loading units = 404

    Flow rate due to loading units = 3.5 l/s

    From urinals = 0.1875 + 0.075

    = 0.2625 l/s

    Total design flow rate = 3.5 + 0.2625

    = 3.7625 l/s

    Loss of head = 0.065 m/m run

    Head loss due to the pipe = 0.065 9.5

    = 0.6175 m

    Head loss of stop valve = 1.6 m

    Head loss due to elbows = 2.3 0.065

    = 0.1495 m

    Head loss due to Ts = 3.5 0.065

    = 0.2275 m

    Total head loss of the pipe = 0.6175 + 0.1495 + 0.2275

    = 2.5945 m

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    Fig.6 Cold water pipe line system

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    Fig.7 Water tank and pumps arrangement

    Alternative pump has provided to make sure the continuous water supply even in

    a break down of the main pump. Water which is at under ground sump is pumped to the

    elevated tank.

    Key

    = Stop valve BC = Bathing cubical

    = Pump B = Water Bath

    = Ball valve BT = Bib tap

    WC = Water closet S = Sink

    BS = Bidet shower WB = Wash basin

    Assumption :- Bathing cubical is consists of a shower and a bib tap.

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    Table.2 Pipe size calculation for cold water pipe system

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    Pipe diameter for each pipe in the cold water system

    Pipe number Outer diameter (mm)

    1 54

    2 42

    2-1 35

    2-2 35

    2-3 35

    2-4 35

    2-5 35

    3 42

    3-1 35

    4 54

    5 42

    5-1 35

    5-2 35

    5-3 35

    6 42

    6-1 35

    6-2 35

    7 42

    8 42

    8-1 35

    8-2 35

    8-3 35

    9 42

    9-1 35

    9-2 35

    9-3 35

    Table.3 Pipe size estimation for cold water system

    All the other pipes which are connecting appliances are of 28 mm outer diameter.

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    Hot water supply

    Hot water demand = 160 l/day/per bed

    Peak demand = 30 l/hr

    Number of beds = 105

    Total demand = 105 160

    = 16800 l/day

    In this hospital, only the necessary appliances are provided with hot water. Mainly

    the selected wash basins, selected sinks, bathing cubicles and water baths were connected

    to hot water supply system. (i.e. wash basins in ward washrooms, washrooms in other

    important units, sinks in operation theater and ICU.etc.) Ground floors public

    washrooms were not connected to the hot water system because they may not use in night

    time when the environment is cold. It is not necessary and also uneconomical. (This

    hospital is situated in Hatton where the night temperature is low)

    Hot water will generate using boilers. These boilers will be function with bio-gas.

    Detail of the bio-gas supply unit will be discussed later. Electrical backup system for the

    boilers were connected to keep continuation of hot water supply is low or dropped down.

    Per person hot water demand = 35 l/day

    Hot water cylinder capacity = 35 105

    = 3675 l/day

    = 3.675 m3/day

    We cannot store the amount of total hot water demand in a cylinder because it will cause a

    massive energy loss while storage and the water will not in adequate temperature all over

    the day. So we are planning to do the boiling throughout the day. So we do not need

    cylinder of 16.8 m3. So, about 4 m

    3cylinder will be adequate.

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    Fig.8 Hot water pipe line system

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    Fig.9 Hot Water supply system

    In this case, solar water heaters were come in to the seen as an alternative. But

    doing it in large scale is expensive. Hatton area is not much experience lot of solar heat. So

    it is not economically feasible.

    Bio-gas can reduce the cost because we can get it free. And it also gives solution

    for the solid waste disposal.

    Required flow rate (Hot water) for several appliances

    Wash basin = 0.08 l/s

    Water bath = 0.15 l/s

    Shower = 0.20 l/s

    Sink = 0.15 l/s

    Water tank

    Cylinder

    Vent pipe

    To appliances

    Boiler

    Drain valve

    Safe valve

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    Table.4 Pipe size calculation for hot water pipe system

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    Pipe diameter for each pipe in the hot water system

    Pipe number Outer diameter

    1 422 28

    2-1 28

    3 35

    4-1 35

    4-2 35

    5 35

    6 42

    7 22

    Table.5 Pipe size estimation for hot water system

    Outer diameter of 22 mm pipes were used for the other part of the pipe network.

    They were used to connect appliances to the main pipe lines.

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    Waste water disposal system

    Above ground waste water disposal system

    Special system of waste water disposal method was used in this hospital. Gray

    water is collecting separately and sends to a treatment plant before dispose them to ground.

    Black water was directed to a bio-gas generating unit to generate bio-gas.

    Three services ducts were included in this building for plumbing. Three main waste

    water disposal pipe lines coming through these ducts were connected to a main line at

    ground level which goes to their destinations. Here the main black water line was directed

    to the bio-gas unit and the main gray water pipe line was directed to the waste water

    treatment plant.

    Discharge units of appliances

    9lWC = WC = 14

    Sink = S = 14

    Wash basin = WB = 2

    Water bath = B = 18

    Shower = SH = 2

    Bib tap = BT = 2

    Assumption :- Bathing cubical (BC) is consists of a shower and a bib tap. Therefore

    discharge unit of a bathing cubical is 4.

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    Above ground gray waste water disposal system

    Fig.10 Above ground waste water system

    Gray water disposal system through duct 1 (D1)

    Second floor level

    First floor level

    Ground floor level

    D1-1 D1-2

    D1-8

    D1-3 D1-4

    D1-9

    D1-5 D1-6

    D1-10D1-7

    D1-11

    Fig.11 Gray water disposal pipe line system through duct 1 (D1)

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    Pipe

    number

    Discharge unit of appliances Total

    discharge

    units

    Pipe

    size

    (inner

    dia.)

    (mm)

    WC Sink Wash

    basin

    Water

    bath

    Shower Bib

    tap

    Urinal

    Second Floor

    D1-1 - - 42 =

    8

    - 32 =

    6

    32 =

    6

    - 20 63

    D1-2 - 414=

    56

    42 =

    8

    181=

    18

    12 =

    2

    12 =

    2

    - 86 76

    D1-8 20+86 =

    106

    76

    First floor

    D1-3 - 214=

    28

    210=

    20

    - 82 =

    16

    82 =

    16

    - 80 76

    D1-4 - - 22 =

    4

    - - - - 4 50

    D1-9 84+106 =

    190

    89

    Ground floor

    D1-5 - - 52 =

    10

    - - - - 10 50

    D1-6 - - 52 =

    10

    - - - - 10 50

    D1-7 - 514=

    70

    22 =

    4

    - - 52 =

    10

    - 84 76

    D1-10 190+10=

    200

    89

    D1-11 200+10+

    84 =294

    100

    Table.6 Pipe size estimation of gray water pipes through duct 1

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    Gray water disposal system through duct 2 (D2)

    Second floor level

    First floor level

    Ground floor level

    D2-1

    D2-4

    D2-7

    D2-2

    D2-3

    D2-5

    D2-6

    D2-9D2-8

    D2-10

    From D3

    Fig.12 Gray water disposal pipe line system through duct 2 (D2)

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    Pipe

    number

    Discharge unit of appliances Total

    discharge

    units

    Pipe

    size

    (inner

    dia.)

    (mm)

    WC Sink Wash

    basin

    Water

    bath

    Shower Bib

    tap

    Urinal

    Second Floor

    D2-1 - - 23 =6

    - - - 6 50

    D2-2 - - 21 =

    2

    - 22 =

    4

    22 =

    4

    - 10 63

    D2-3 6+10 =

    16

    63

    First floor

    D2-4 - - 23=

    6

    - - - - 6 50

    D2-5 - - 22 =

    4

    - 22 =

    4

    22 =

    4

    - 12 63

    D2-6 18+16 =

    34

    76

    Ground floor

    D2-7 - - 22 =

    4

    - - - - 4 50

    D2-9 4+34 =

    38

    76

    D2-8 - - 32 =

    6

    - - - - 6 50

    From duct 3 (D3) 76

    D2-10 32 =

    6

    6+6+38+

    76= 126

    89

    Table.7 Pipe size estimation of gray water pipes through duct 2

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    Gray water disposal system through duct 3 (D3)

    Second floor level

    First floor level

    Ground floor level

    D3-1 D3-2

    D3-3

    D3-4

    D3-5

    D3-6

    D3-7

    D3-8

    D3-9

    Fig.13 Gray water disposal pipe line system through duct 3 (D3)

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    Pipe

    number

    Discharge unit of appliances Total

    discharge

    units

    Pipe

    size

    (inner

    dia.)

    (mm)

    WC Sink Wash

    basin

    Water

    bath

    Shower Bib

    tap

    Urinal

    Second Floor

    D3-1 - - - 118=18

    - - - 18 63

    D3-2 - - 22 =

    4

    - 21 =

    2

    21 =

    2

    - 8 50

    D3-3 18+8 =

    26

    63

    First floor

    D3-4 - - - 118=

    18

    - - - 18 63

    D3-5 - - 21 =

    2

    - 21 =

    2

    21 =

    2

    - 6 50

    D3-6 24+26=

    50

    76

    Ground floor

    D3-7 - - - 118=

    18

    - - - 18 50

    D3-8 18+50=

    68

    76

    D3-9 - - 22 =

    4

    - 21 =

    2

    21 =

    2

    - 8+68 =

    76

    76

    Table.7 Pipe size estimation of gray water pipes through duct 3

    Higher provision for discharge pipes were given so that to avoid blocks and to

    increase the efficiency of flow.

    Size of the discharge pipe of each appliance (inner diameter)

    Wash basin = 38 mm

    Sink = 50 mm

    Water bath = 63 mm

    Bathing cubical = 63 mm

    (Shower and bib tap)

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    Total discharge units of main discharge pipe = 294+126+76

    = 496

    Therefore proposed pipe size = 125 mm

    Assumption:- 85% of consumption will be discharge as gray water. Consume will be take

    place in 18 hrs duration per day.

    Discharge = 99.43585% /186060

    = 1.30410-3

    m3/s

    = 1.304 l/s

    From Chezzys equation;

    V = Cmi

    Considering half-filled conditions and assuming the self-cleansing velocity is 1.1 m/s

    Fig.14 Section of a half filled pipe

    m = A/

    = (d2/4) / (d/2)

    = d/4

    Assume the peak flow is 6 time higher than average flow:

    Peak flow = 1.304 6

    = 7.824 l/s

    Considering;

    Q = AV

    7.82410-3 = (d/2)20.9

    d = 0.1488 m

    Therefore d = 125 mm pipe is not adequate. So we can use d = 150 mm pipe as the main

    horizontal discharge pipe.

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    m = d/4

    = 150/4

    = 37.5 mm

    Considering;

    V = Cmi , C = 55

    1.1 = 550.0375ii = 4/374

    = 0.01067

    Can use the slope of the pipe as 1: 90

    Gray water treatment and disposal

    This gray water was directed to a treatment plant and after treating they will

    be discharge to a soakage pit.

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    Above ground black water disposal system

    Black water disposal system through duct 1 (D1)

    Fig.15 Black water disposal system through duct 1 (D1)

    Pipe Discharge units Total discharge

    units

    Inner diameter

    of the pipe (mm)WC Urinal

    Second floor

    D1-1B - 22 = 4 4 50

    D1-2B 414 = 56 - 56 89

    D1-3B 4+56 = 60 89

    First floor

    D1-4B 314 = 42 - 42 89

    D1-5B 414 = 56 - 56 89

    D1-6B 42+56+60=158 100

    Ground floor

    D1-7B - 24 = 8 8 50

    D1-8B 914 = 126 - 126 100

    D1-9B 134+158= 292 150

    Table.7 Pipe size estimation of black water pipes through duct 1

    D1-2BD1-1B

    D1-3B

    D1-5BD1-4B

    D1-6B

    D1-8BD1-7B

    D1-9B

    Second floor level

    First floor level

    Ground floor level

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    Black water disposal system through duct 2 (D2)

    Fig.16 Black water disposal system through duct 2 (D2)

    Pipe Discharge units Total discharge

    units

    Inner diameter

    of the pipe (mm)WC Urinal

    Second floor

    D2-1B 214 = 28 - 28 89

    D2-2B 28 89

    First floor

    D2-3B 214 = 28 - 28 89

    D2-4B 28+28 = 56 89

    Ground floor

    D2-5B 214 =28 - 28 89

    D2-6B 214 =28 - 28 89

    From D3 42

    D2-7B 56+56+42=164 125

    Table.8 Pipe size estimation of black water pipes through duct 2

    Second floor level

    First floor level

    Ground floor level

    D2-1B

    D2-2B

    D2-3B

    D2-4B

    D2-5B D2-6B

    D2-7BFrom D3

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    Black water disposal system through duct 2 (D2)

    Fig.17 Black water disposal system through duct 3 (D3)

    Pipe Discharge units Total discharge

    units

    Inner diameter

    of the pipe (mm)WC Urinal

    Second floor

    D3-1B 114 = 14 - 14 89

    D3-2B 14 89

    First floor

    D3-3B 114 = 14 - 14 89

    D3-4B 14+14 = 28 89

    Ground floorD3-5B 114 =14 - 14 89

    D3-6B 214 =28 - 14 =28 = 42 100

    Table.9 Pipe size estimation of black water pipes through duct 3

    Higher provisions were allowed for diameter of the pipes to make sure that

    solids will not block the pipes and to obtain the half fill condition. It also increases the

    efficiency of the flow.

    D3-1BSecond floor level

    First floor level

    Ground floor level

    D3-3B

    D3-2B

    D4-1B

    D3-5B

    D3-6B

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    Total discharge units = 292+42+112

    = 446

    Therefore, 150 mm diameter pipe was provided as the main black water disposal pipe. This

    is laid on the ground.

    Assumptions :-

    Total amount of the black water discharge per day is equal to 15% of the usage Pipes are in half filled condition Self-cleansing velocity of the black water is 0.9 m/s Water demand will be occur during 18 hr period per day Peak demand is six times the average demand

    Black water discharge = 99.43515% / 186060

    = 2.30210-4

    m3/s

    Peak discharge = 2.30210-4

    6

    = 1.381210-3

    m3/s

    Considering, Q= AV;

    1.381210-3 = d20.9/4

    d = 0.0442 mm

    Therefore d=150 mm pipe is adequate.

    Considering, m = A/;

    m = d/4

    =0.15/4

    m = 0.0375 m

    From Chezzys equation, V = Cmi , C=55

    0.9 = 550.0375i

    i = 7.93410-4

    Provided slope for the pipe is 1:125

    This pipe was directed to bio-gas unit.

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    Below ground waste water disposal system

    Below ground black water disposal system

    All the black water is directed to a bio-gas unit. It will be work as a below

    ground black water disposal system.

    Below ground gray water disposal system

    All the Gray water was directed to a gray water treatment plant. After

    treating, they will be discharge to the ground. This system will be acting as the below

    ground gray water disposal system.

    Further details of the bio-gas unit and water treatment plant will be discussed later.

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    Fire Security system

    Fire security system is consisting of two elements. They are fire detecting

    and firefighting. In this building, both fire detecting and firefighting systems were

    installed.

    Fire detecting system

    We have provided heat detectors as the fire detectors. Since this area has less

    temperature, smoke detectors will be more effective over heat detectors. They were

    connected to fire alarms.

    Fig.18 Smoke detectors

    Fire alarms were installed in wards and other necessary areas. If smoke enters

    the unit, particles attach to the ions slowing their movement. This reduction in current flow

    actuates an electronic relay circuit to operate an alarm.

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    Fire fighting system

    Fig.19 Wet riser

    Fig.20 Landing valve

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    A wet riser was provided to the building. Plumbing for wet riser was laid

    through service ducts. Hoses were provided in each floor. Except the wet riser, portable

    fire fighters (Foam) were installed at necessary places. Especially we provided them for

    small fire and for the places where using water is not much appropriate.

    Fig.21 Portable fire fighters

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    Public administration system and Security Camera system

    Public administration system

    A public administration system was installed in this hospital. All the wards and

    the necessary places were provided with speakers. The controlling unit was installed in

    administration area. All the announcements can be passing through this system. Cables for

    this system were laid through service ducts.

    Fig.22 Wall mounted Speaker

    Security Camera system

    Security cameras were mounted in the entrance, wards and other necessary

    positions in the hospital for security purpose. Control unit was situated in administration

    area. Cables for this system were laid through service ducts.

    Fig.23 Security Camera

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    Lighting system

    Illumination level and required lamps

    Lighting is another critical service of a hospital. Adequate light with appropriate

    Illumination level should be provided. Followings are the required Illumination levels

    according to EN 12464-1 (2002)

    Area Illumination level Em (lx)

    Corridor 200

    washrooms 200

    Store room 100

    Office 500

    Staff room 300

    Wards 300Delivery room

    General lighting

    Examination area

    300

    1000

    Emergency treatment unit 500

    Operation theater

    Theater

    Recovery area

    1000

    500

    ICU

    general

    Examination and treatment area

    300

    1000Dental unit

    General

    At the patient

    500

    1000

    Pharmacy 500

    Table.10 Illumination level of different areas

    Table.11 Data of different types of lamps

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    Assumption:- use 80 W Fluorescent lamp which has 7375 luminous.

    Number of lamps = EA/ FUM

    Where;

    E = Illumination level

    A = Area

    F = luminous per lamp

    U = Utilization factor

    M = Maintenance factor

    Here, U = 0.5 and M = 0.8

    Specimen calculation to find the required number of lamps for front lobby, staircase and lobby in the ground floor as follow;

    Area = 737.5

    = 248.5 m2

    Illumination level = 200 lx

    Required number of lamps = EA/FUM

    = 200248.5/73750.50.8

    = 16.85

    17 lamps were required.

    Assumption:-

    Average illumination level at,

    Delivery room = (1000 + 300)/2

    = 650 lx

    ICU = (1000 + 300)/2

    = 650 lx

    Dental unit = (1000 + 500)

    = 750 lx

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    Name of the area Illumination

    level (lx)

    Area (m2)

    Number of

    lamps

    Ground floor

    Front lobby, Stair case and lift 200 262.5 17

    Corridors 200 50 4Administration area 500 67.5 12

    Rest rooms 300 56.5 6

    Washrooms and cleaning room 200 84.5 7

    Services room and store room 100 31.5 2

    Consultant room 300 28 3

    Emergency treatment unit 500 56 10

    OPD 500 24 4

    Medical record room 300 15 2

    Pharmacy 500 6.25 1

    Back lobby and stair case 200 93 7

    X-ray room 300 35 4

    Dental unit 750 28 8

    Around the hospital 100 252 9

    Total number of lamps required for ground floor 96

    First floor

    Corridors, lobbies, lift and staircase 200 208.25 15

    Children ward 300 115 12

    Female ward 300 214 22

    Washrooms 200 82 6

    Mandatory ward 300 72 8Delivery section 650 59.5 14

    Total number of lamps required for First floor 77

    Second floor

    Corridors, lobbies, lift and staircase 200 135.25 10

    Male ward 300 115 12

    General ward 300 131.5 14

    Operation theater 1000 40 14

    Recovery area and lobby 500 25 5

    Washrooms 200 70 5ICU 650 112 25

    Store room 100 48 2

    Total number of lamps required for First floor 87

    Table.12 Estimation of number of lamps per several areas

    Total number of lamps required = 96 + 77 + 87

    = 260

    Energy requirement for lighting = 260 80 W

    = 20.8 kW

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    In hospitals, special kind of lamps and lightings are using in Operation theaters,

    ICU and Dental units. High intensity lighting systems are useful for examine patients in

    operation theaters and dental units.

    (i) (ii)Fig.24 Interior lighting of (i)Operation theater and (ii)ICU

    Alternative lighting method- LED lighting system

    LED lamps are proposed to use in this hospital as alternative energy

    conservation method.

    Advantages of LED lighting system

    long service life low maintenance costs low power consumption minimum operating costs vibration and impact-proof compact size high colour stability efficient control thanks to simple control system low heat generation

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    Fig.25 LED luminariesStatic and dynamic light

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    Energy Consumption

    Fig.26 Energy usage of a Hospital

    Equipment Energy (kW)

    MI (Cyclotron) 100Cathlab 105

    MRI 75

    CT 64

    PET & PET CT 72

    Surgery mobile C arm 8

    CSSD (Central Sterilization supply dept.) 96

    OT equipment 1.6

    ICCU equipment 1.6

    X-ray (Radiography, Fluoroscopy) 52

    Mammography 12

    Ultra sound 4

    Healthcare IT work station 1.6

    Table.13 Energy consumption for equipment

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