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Building Design Cost Management

Chapter 1 | Chapter 2 | Chapter 3 | Chapter 4 | Chapter 5 | Chapter 6 | Chapter 7 | Chapter 8 | Chapter 9 | Chapter 10 | Chapter 11 | Chapter 12
Approach | BCIS Information | Case Study Design Information
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Andy Ross | Dave Jaggar | Jim Smith | Peter Love
Quantity Surveying | Construction Management | Architecture | Civil Engineering | Construction I.T.
Building Organisations- Carillion plc | Building Organisations - McCarthy and Stone | Architects | Engineers - Betchel
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Building Design Cost Management

Case Study - BCIS Information - Available Information - Cost

 

Electronics Factory B A - 1 - 1,850
Building Function : 275.5 - Factories for electronics, computers, or the like
Type of Work : New build
Gross Floor Area : 1,850 m2
Job Title : Factory,
Location : Belfast, Northern Ireland
District : Belfast
Grid Reference :  
Dates : Receipt : 30-Jul-1997
Base : 30-Jul-1997
Project Details : 2 factory units with assembly areas 418m2, storage 301m2, staff areas 1025m2, plant room 23m2 and linked entrance atrium 83m2. External works include precast and reinforced concrete and macadam paving, metal fencing, landscaping and drainage.
Market Conditions : Contract sum includes enabling works carried out in previous contract and the revised PC sums. Tender list is for building works only. Project tender price index: 97 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 : 6  Offered : -  Agreed : 6
Cost Fluctuations : Fixed
Tender Amended : See market conditions text
Tender List : £ 1,298,537 -  
  £ 1,326,178 2.1%  
  £ 1,333,301 2.7%  
  £ 1,354,321 4.3%  
  £ 1,369,412 5.5%  
  £ 1,387,000 6.8%  
Contract Breakdown :     
Measured Work £ 946,562   
Provisional Sums £ 32,700   
Prime Cost Sums £ 537,500   
Preliminaries £ 63,323   
Contingencies £ 30,000   
Contract Sum £ 1,610,085   
Accomodation and Design Features : 2 factory units for computer related industries comprising a 2 storey professional block and single storey assembly block with integral 2 storey offices. RC ground beams, piling, ground slabs. Steel frame with insulated metal roof and wall cladding. Double glazed aluminium windows. Steel stairs. PCC upper floors. Block and metal stud partitions. Timber internal doors. Plaster paper and paint to walls; vinyl, tiles, rubber, carpet and raised access floors; mineral fibre suspended ceilings. Fittings. Oil fired central heating, air conditioning, electrics and lift.
Basement - m2 Area of External Walls - m2   
Ground Floor - m2 Wall to Floor Ratio - %   
Upper Floors - m2 Average Storey Heights

Basement - m   
Gross Floor Area 1,850 m2 Ground - m   

Upper - m   
Usable Area - m2
Circulation Area - m2 Internal Cube - m3   
Ancillary Area - m2
Internal Divisions - m2 Spaces Not Enclosed - m2   

Gross Floor Area 1,850 m2 Number of Units 2    

 

Analysis
Element  Total Cost   Cost per
 m2 
 Element Unit
Quantity 
 Element Unit
Rate 
 Percent-
 age 
1 Substructure £ 154,043  £ 83.27    9 %   
2A Frame £ 112,000  £ 60.54    6 %   
2B Upper floors £ 26,494  £ 14.32    1 %   
2C Roof £ 110,129  £ 59.53    6 %   
2D Stairs £ 30,690  £ 16.59    1 %   
2E External walls £ 208,921  £ 112.93    12 %   
2F Windows and external doors £ 48,006  £ 25.95    2 %   
2G Internal walls and partitions £ 39,117  £ 21.14    2 %   
2H Internal doors £ 31,111  £ 16.82    1 %   
2 Superstructure £ 606,468  £ 327.82    37 %   
3A Wall finishes £ 36,103  £ 19.52    2 %   
3B Floor finishes £ 63,107  £ 34.11    3 %   
3C Ceiling finishes £ 17,325  £ 9.36    1 %   
3 Internal finishes £ 116,535  £ 62.99    7 %   
4 Fittings £ 22,099  £ 11.95    1 %   
5A Sanitary appliances Included in element 5D
5B Services equipment    
5C Disposal installations Included in element 5D
5D Water installations (includes others) £ 12,260  £ 6.63   
5E Heat source Included in element 5F
5F Space heating and air treatment (includes others) £ 90,134  £ 48.72    5 %   
5G Ventilating systems £ 88,674  £ 47.93    5 %   
5H Electrical installations £ 126,803  £ 68.54    7 %   
5I Gas installations    
5J Lift and conveyor installations £ 13,293  £ 7.19   
5K Protective installations    
5L Communications installations £ 20,680  £ 11.18    1 %   
5M Special installations    
5N Builder's work in connection £ 15,440  £ 8.35   
5O Builder's profit and attendance    
5 Services £ 367,284  £ 198.53    22 %   
 Building sub-total £ 1,266,429  £ 684.56    78 %   
6A Site works (includes others) £ 203,475  £ 109.99    12 %   
6B Drainage £ 46,858  £ 25.33    2 %   
6C External services Included in element 6A
6D Minor building works    
6 External works £ 250,333  £ 135.32    15 %   
7 Preliminaries £ 63,323  £ 34.23    3 %   
 Total (less Contingencies) £ 1,580,085  £ 854.10    98 %   
8 Contingencies £ 30,000  £ 16.22    1 %   
 Contract sum £ 1,610,085  £ 870.32    100 %   

 

Specification
Element Specification
1 Substructure Reinforced concrete floor slab, power floated finish. Includes £96,628 for reinforced concrete ground beams and piled foundations carried out in previous contract.
2A Frame Structural steel frame in 2 units with a single portal frame span to each unit.
2B Upper floors Pre-stressed precast concrete floor slabs.
2C Roof Galvanised steel insulated composite roofing panels.
2D Stairs Stainless steel staircase.
2E External walls Galvanised composite cladding full height with facing block plinth.
2F Windows and external doors Aluminium powder coated, double glazed windows and doors.
2G Internal walls and partitions 100 & 215mm blockwork and plasterboard lined metal partitions.
2H Internal doors Flush doors, solid flaxiboard core, half hour fire resistant.
3A Wall finishes 2 coat plaster and emulsion paint.
3B Floor finishes Raised access floor, ceramic and vinyl sheet.
3C Ceiling finishes Suspended ceiling - Armstrong range.
4 Fittings Toilet cubicles, mirrors, vanity and kitchen units.
5D Water installations Sanitary ware etc, hot and cold water installation to all units.
5F Space heating and air treatment Oil fired heating system with radiators and ceiling panels.
5G Ventilating systems Low velocity air conditioning including ducting and handling units.
5H Electrical installations General power and lighting installation including distribution board.
5J Lift and conveyor installations 1No 630kg 8 person passenger lift with wheelchair access.
5L Communications installations Fire alarm and intruder alarm systems and public address/sound amplification installation.
5N Builder's work in connection Holes and chases for all the above installations.
6A Site works Reduced level excavation and making up levels. Air entrained concrete, bitumen macadam including hard core base on stabilisation. Tobermore concrete paving blocks. 2.4m high steel fencing and vertical timber fencing. Imported topsoil and grass seeding. Includes £77,884 for site preparation carried out in previous contract.
6B Drainage Foul and storm system including manholes.
6C External services Trenching for electricity and telephones.
7 Preliminaries 4.17% of the remainder of the contract sum (excluding contingencies but including £13,165 for substructure and enabling work carried out in previous contract).
8 Contingencies 1.98% of the remainder of the contract sum (excluding preliminaries but including £5,000 for dayworks for the substructure and enabling work carried out in previous contract).

 

Credits
 Submitted by:  
 Client:  
 Architect:  
 Quantity Surveyor: Building Design Cost Management Associates
 Structural Engineers:  
 M&E Engineers:  
 General Contractor:  
 
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