elect inst three phase

7/23/2019 Elect Inst Three Phase

1/40

MECHANICAL & ELECTRICAL WORKS

MEASUREMENT (SBEQ3213)Week 9 : Electrical Installations Three Phase

Sr. Dr. Sarajul Fikri Mohamed

Faculty of Built Environment


2/40

Cold Water InstallationsPLUMBING WORKS

Electrical Installations

Fire Fighting System

MAIN COURSE COMPONENTS

Air Conditioning Installations

Unit/Split Package/Central

Single Phase Three Phase

ELECTRICAL WORKS

MECHANICAL WORKS

Soil & Waste Pipes/Sanitary Fittings

Underground Drainage


3/40

1. Electrical installations: main components

2. SMM2 measurement rules for electrical installations

3. Taking off list for electrical installations

4. Heading and description.

5. Case study: CADANGAN MEMBINA DEWAN SERBAGUNA

TAMAN KOTA JAYA, KOTA TINGGI, JOHOR

TABLE OF CONTENT


4/40

2009 Sarajul Fikri Mohamed

ELECTRICAL INSTALLATIONS

AND MAIN COMPONENTS


5/40

INCOMING SERVICES

MAIN INSTALLATION

POWER INSTALLATION

LIGHTING INSTALLATION

CABLES

ELECTRICAL APPLIANCES

CONDUIT AND FITTING

LIGHTNING PROTECTION SYSTEM

TESTING

ELECTRICAL INSTALLATIONSTHREE

PHASE


6/40

INCOMING SERVICES

MAIN INSTALLATION

POWER INSTALLATION

LIGHTING INSTALLATION

ELECTRICAL APPLIANCES

FINAL SUB-

CIRCUIT

CABLE

CONDUIT

LIGHTNING

PROTECTION

TESTING

ELECTRICAL DISTRIBUTION IN BUILDING


7/40 2009 Sarajul Fikri Mohamed

SMM2 MEASUREMENT

RULES


8/40

MEASUREMENT RULES

ELECTRICAL INSTALLATION


9/4029

Clause Description

R4-R5 Equipments and Control Gear

R6-R8 Fittings and Accessories

R9-R13 Conduits, trunking and cable trayR14-R17 Cabling

R18 Final Sub-circuits

R19 Earthing

R20-R21 Ancillaries

R22 Sundries

R23-R24 Builders Work

RELATED SMM2 CLAUSES



10/40

MEASUREMENT RULES



11/40

EQUIPMENT AND CONTROL GEAR (NO)

R4Equipment (generator, motors)

Control gear (isolator, switch fuses)

Packaged item described with a manufacturers detail.

Limiting dimension on size shall be given.

Connecting cable ends or cable tails shall be deemed to be

included with the item.

Platework and supporting steelworkSection P.

MEASUREMENT RULES



12/40

HEADING AND DESCRIPTION

MAIN INSTALLATIONS1. EQUIPMENT AND CONTROL GEARItem Description Unit Qty Note

A

B

Equipment and Control Gear

415 volt metal clade main switch board, 3 phase of wall

mounted floor standing type and including fuse swithches,

RCCVs, copper busbar, voltmeter, ammeter, current

transformer, light indicator, cable box and all associated

accessories.

TNB metre board control gear complete with cut out fuse

holder and neutral link with facilities for termination of

incoming supply cable for wiring connection main switch

distribution board and fuses 60A current operated ELCB

complete with earthing elctrode.

No

No

2

1


13/40

EQUIPMENT SUPPORTS : R5

Equipment supports enumeratedand described (NO)

Method of fixing given in the description with clauses R.1.5-6.

MEASUREMENT RULES



14/40

MEASUREMENT RULESELECTRICAL INSTALLATION


15/40

2. Power Installation- fitting & accessories

= socket no

- cables m

- conduits m

- final sub-circuit no

- sundries= mark holes item

= general bonding item

= testing item

TAKING OFF LISTS

DOMESTICHOUSING SINGLEPHASE


16/40

SOCKET

POWER INSTALLATION



17/40

MEASUREMENT RULESELECTRICAL INSTALLATIONS


18/40

A rectangular metal made

system that either horizontally

or vertically fixed to wall.

A good mechanical protection.

Made from 18 gauge steel sheet.

Available size:

50mm x 50mm

70mm x 100mm

150mm x 75mm

150mm x 150mm

Equipped with bend, tee, and

junction.

TRUNKING



19/40

Cable and trunking use for connection from main to distribution board or

distribution board to socket.

Size and Material.

SMM2 Refer to clause R.15, R.9 (M)

TRUNKING



20/40

CONDUIT, TRUNKING AND CABLE TRAYS

R12.1 Trays (m)i) type; ii) width; and iii) method of jointing

R12.2 Stools (NO)

i) type; and ii) size

R12.3 Fitting (NO and EXTRA OVER )

MEASUREMENT RULES



21/40

CABLE TRAY



22/40

MEASUREMENT RULES

ELECTRICAL INSTALLATION


23/40

CABLES

R15.1Cables (m)

measured as the net length of the conduit, trunking or tray.

other cable measured as fix (without any allowance for sag)

between boxes, equipment control gear, fittings, accessories etc.

except for final sub-circuits.

MEASUREMENT RULES



24/40

CABLE

R17 Connections to public mains, making good public highway and

other work which may only carried out by Public Undertaking

or Local AuthorityPROVISIONAL SUM

MEASUREMENT RULES



25/40



26/40

3. Lighting Installation- fittings & accessories

= switch no

- cables m

- conduits m

- final sub circuit no

- sundries= mark holes item

= general bonding item

= testing item

TAKING OFF LISTS

DOMESTICHOUSING SINGLE PHASE


27/40



28/40

4. Electrical Appliances- fitting & accessories

= Exhaust fan no

- cables m- conduits m

- final sub circuit no

- sundries

= mark holes item

= general bonding item= testing item

TAKING OFF LISTS

DOMESTICHOUSING SINGLE PHASE


29/40

HEADING AND DESCRIPTION

POWER INSTALLATIONS4. ELECTRICAL APPLIANCES (Internally)

Item Description Unit Qty Note

A

B

C

D

E

Cables

2 x 8mm2 PVC cable in concealed galvanised iron conduit come with 1 x 8mm2 PVC

CPC

Conduit

25mm diameter PVC galvanised iron conduit concealed to brickwall for exhaust fan

Fitting and Accessories

150mm x150mm metal exhaust fan install at high level complete with support brackets,

flexible connectors and vibration.

1 gang 15 Amp switch outlet for exhaust fan with PVC plate box and fixed to brick wall

Final Sub-Circuit

Final sub-circuit fir 15A socket point for metal exhaust fan of concealed conduit cable

installation consisting od 2 x 8mm2 single core cable drawn into galvanised iron conduit.

m

m

No

No

No

15

35

5

5

5


30/40



31/40

EARTHING

R19.1 Tapes for earthing(m)

i) size;ii) type; andiii) type & spacing of saddles, cleats, clip holdfasts & the like

R19.2 Conductor connections & junctions (NO)

i) type; and ii) sizeR19.4 Test clamps (NO)

i) type ii) size; and iii) method of connecting



32/40

Air Terminal

Cooper Tape

LIGHTING PROTECTION SYSTEMELECTRICAL INSTALLATIONS


33/40

ELEMENT: ELECTRICAL SERVICES ubb/N/04

BIL UNIT KUANTITI

NO 16

NO 16

H

M 29.00

Brass test c lamp complete wi th screws. NO 2

NO 2

NO 2

To Collection

HARGA

(RM)

JUMLAH

(RM)

25mm x 3mm copper tape at roof including propose

made copper or brass c lips at 1000mm internals and

connecting to roof tapes.

500mm High Solid Copper air termination with

formed thread complete with bronze nut and

appropriate thickness copper air terminal base.

Cadangan Membina Dan Menyiapkan Sebuah Makmal Komputer Di Sekolah Kebangsaan Sri

Selangor, Petaling Jaya, Selangor.

KETERANGAN

Lighting Installation-Internally (All Provisional)

(Cont'd)

3 x 36W recessed mounted fluorescent light fitting

with low loss ballast C/W acrylic diffuser 2 x

1.5mm/1C PVC in concealed UPVC conduits with

5A switch.

300mm x 300mm x 300mm deep concrete Earth

Electrode Chamber complete with concrete cover

from ground level, lightweight screed to prevent

ingres of water, 16mm solid drawn copper Earth

Electrode, copper tape and 50mm UPVC pipe.

3 x 36W recessed surface fluorescent light fitting

with low loss ballast C/W acrylic diffuser 2 x

1.5mm/1C PVC in concealed UPVC conduits with

5A switch.

Lightning Protection-Externally (All Provisional)

COOPER TAPE

ELECTRODE CHAMBER


34/40

Typical earth-electrode pit

Earthing using cooper strip

Earthing & Bonding

requirement

EARTHING INSTALLATIONELECTRICAL INSTALLATIONS


35/40


36/40


37/40

Air Termination (NO.)

Copper Tape Roof Conductor. (M)

SMM2 Refer to clause R.19.6, R.22.2, R.19.

LIGHTNING PROTECTION INSTALLATION



38/40

ANCILLARIES

R20 Loose keys, tools, spares and the like (NOseparately)

i) type; and ii) quantity

Rack for holding tools (NO)

MEASUREMENT RULES



39/40

SUNDRIES

R22.1 Marking the position of holes, mortice, chases & the like

(ITEM)

R22.2 General earth bonding & earthing (ITEM)

R22.3 Disconnecting, setting aside & refixing equipment (ITEM)

R22.4 Temporary operating each installation (ITEM)

R22.5 Testing each installation (ITEM)

R22.6 Preparing plans or diagrams of the installations (ITEM)

MEASUREMENT RULES



40/40

THANK YOUfor your kind attention

elect inst three phase

Documents