Untitled Document

Building Design Cost Management

Case Study - BCIS Information - Available Information - Cost

Electronics factory C

A - 1 ( 2 ) - 4,790

Building Function :	275.5 - Factories for electronics, computers, or the like
Type of Work :	New build
Gross Floor Area :	4,790 m²

Job Title :

Electronics Factory, Belfast

Location :	Belfast, Northern Ireland
District :	Belfast
Grid Reference :

Dates :	Receipt : 17-May-1996
	Base : 17-May-1996

Project Details :

Single storey steel framed electronics factory with integral 2 storey office and plant accommodation together with external works including precast concrete and macadam paving, brick and precast concrete crib wall, metal fences, landscaping, services, drainage and security hut.

Site Conditions :

Poor ground conditions with contaminated soils requiring cut and fill. Demolition of existing factory. Unrestricted working space and site access.

Market Conditions :

Project tender price index: 80 on 1985 BCIS Index Base

Client :
Tender Documentation :	Bill of Quantities
Selection of Contractor :	Selected competition
No of Tenders :	Issued : 6 Received : 6
Contract :	GC/Wks/1 edition 2
Contract Period ( mths ) :	Stipulated : 5 Offered : - Agreed : 5
Cost Fluctuations :	Fixed
Tender Amended :	PC/Provisional Sums revised

Tender List :	£ 3,157,800	-
	£ 3,196,403	1.2%
	£ 3,240,000	2.6%
	£ 3,394,012	7.5%
	£ 3,419,985	8.3%
	£ 3,468,952	9.9%

Contract Breakdown :
Measured Work	£ 1,021,206
Provisional Sums	£ 58,500
Prime Cost Sums	£ 1,691,368
Preliminaries	£ 59,594
Contingencies	£ 43,500
Contract Sum	£ 2,874,168

Accomodation and Design Features : Electronics factory with integral offices. PCC piles, concrete pad, ground beams and slab, PCC upper floor and entrance canopy. Steel frame and stairs. Block walls. Cladding to flat steel roof and walls. Aluminium windows and roller shutters. Block and proprietary partitions. Flush doors. Plasterboard to walls and ceilings; vinyl, carpet and raised access floors. Fittings. Sanitaryware. M&E services by nominated sub-contractor. External works with Tarmac and PCC paving, PCC and brick walls, metal fences, landscaping, service, drainage, security hut.

Basement	0 m²	Area of External Walls	2,150 m²
Ground Floor	4,160 m²	Wall to Floor Ratio	0.45% %
Upper Floors	630 m²	Average Storey Heights
		Basement	- m
Gross Floor Area	4,790 m²	Ground	- m
		Upper	- m
Usable Area	3,800 m²
Circulation Area	200 m²	Internal Cube	- m³
Ancillary Area	738 m²
Internal Divisions	52 m²	Spaces Not Enclosed	- m²

Gross Floor Area	4,790 m²	Number of Units	1

Functional Unit	Rate

3800 - m2 usable floor area	£ 653

Storeys as % of Gross Floor Area:

single storey	73.70%
2 storeys	26.30%

Analysis

Element	Total Cost	Cost per m²	Percent- age
1 Substructure	£ 227,143	£ 47.42	7 %
2A Frame	£ 274,031	£ 57.21	9 %
2B Upper floors	£ 10,681	£ 2.23
2C Roof	£ 163,635	£ 34.16	5 %
2D Stairs	£ 25,519	£ 5.33
2E External walls	£ 411,919	£ 86.00	14 %
2F Windows and external doors	£ 91,586	£ 19.12	3 %
2G Internal walls and partitions	£ 92,409	£ 19.29	3 %
2H Internal doors	£ 68,823	£ 14.37	2 %
2 Superstructure	£ 1,138,603	£ 237.70	39 %
3A Wall finishes	£ 18,707	£ 3.91
3B Floor finishes	£ 106,509	£ 22.24	3 %
3C Ceiling finishes	£ 31,360	£ 6.55	1 %
3 Internal finishes	£ 156,576	£ 32.69	5 %
4 Fittings	£ 13,494	£ 2.82
5A Sanitary appliances	Included in element 5F
5B Services equipment
5C Disposal installations	Included in element 5F
5D Water installations	Included in element 5F
5E Heat source
5F Space heating and air treatment (includes others)	£ 484,226	£ 101.09	16 %
5G Ventilating systems	Included in element 5F
5H Electrical installations (includes others)	£ 393,938	£ 82.24	13 %
5I Gas installations
5J Lift and conveyor installations
5K Protective installations	Included in element 5H
5L Communications installations	Included in element 5H
5M Special installations	Included in element 5F
5N Builder's work in connection	£ 13,684	£ 2.86
5O Builder's profit and attendance
5 Services	£ 891,848	£ 186.19	31 %
Building sub-total	£ 2,427,664	£ 506.82	84 %
6A Site works	£ 288,366	£ 60.20	10 %
6B Drainage	£ 25,824	£ 5.39
6C External services	£ 9,220	£ 1.92
6D Minor building works	£ 20,000	£ 4.18
6 External works	£ 343,410	£ 71.69	11 %
7 Preliminaries	£ 59,594	£ 12.44	2 %
Total (less Contingencies)	£ 2,830,668	£ 590.95	98 %
8 Contingencies	£ 43,500	£ 9.08	1 %
Contract sum	£ 2,874,168	£ 600.04	100 %

Specification

Element		Specification
1	Substructure	C35/20mm reinforced concrete bed 250mm, power floated; precast driven piles with insitu pad and ground beams.
2A	Frame	Single portal steel frame, centrally supported by a line of columns.
2B	Upper floors	Contractor designed precast concrete upper floors, 280mm thick.
2C	Roof	Composite insulated panels, Kingspan to flat steel roof. Asphalt roofing to BS988, 20mm thick including sheeting felt and chippings in hot bitumen. Aluminium rain water goods.
2D	Stairs	Straight internal steel stairs, metal spiral external staircase.
2E	External walls	Hollow concrete block external walls in gauge mortar ne 5N/mm2, 215mm thick. Smooth flat aluminium insulated sheet cladding on steel frame.
2F	Windows and external doors	Windows and doors by nominated sub-contractor. Vertical steel shutters.
2G	Internal walls and partitions	100 and 215mm concrete facing blockwork and proprietary partitions; WC cubicles.
2H	Internal doors	Half hour fire flush doors, folding partitions, roller shutter doors.
3A	Wall finishes	2 coats plaster and plasterboard, vinyl wallpaper. Emulsion paint.
3B	Floor finishes	Sand and cement (1:3) screed, 60mm thick; mastic asphalt paint. Vinyl static control sheeting and tiles; carpet tiles. Raised access floor.
3C	Ceiling finishes	Plasterboard. Armstrong Minaboard suspended ceilings; some Minatone to steelwork.
4	Fittings	Kitchen fittings, signs, handrails, mirrors etc.
5A	Sanitary appliances	Sanitary fittings, soil and waste pipes. Costs included in 5F.
5F	Space heating and air treatment	PC sum for low pressure hot water heating, oil storage unit, ventilation, sanitaryware, disposal, hot and cold water.
5H	Electrical installations	PC sum for electrical power and light, sub-mains, main switchgear.
5L	Communications installations	Fire alarm, CCTV security system, telephones.
5M	Special installations	Compressed air, nitrogen installation. Cost in 5F.
5N	Builder's work in connection	Holes and chases for electrical and mechanical services.
6A	Site works	Demolitions. Precast concrete and macadam roads and parking (£136759), brick and precast concrete paths and pavings (£2289); concrete crib retaining walls (£18485); galvanised steel palisade fencing (£6469); landscaping (£104564).
6B	Drainage	Concrete pipes for storm and foul drainage including manholes.
6C	External services	Incoming electricity, water and telephone mains.
6D	Minor building works	Security hut £20000.
7	Preliminaries	2.15% of remainder of Contract Sum (excluding Contingencies).
8	Contingencies	1.57% of remainder of Contract Sum (excluding Preliminaries).

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