I have been employed by the University of Salford as a project management consultant. The University is considering constructing a new building call Clifford Whitworth library building 2(CWLB2) This new building will be identical to the existing Clifford Whitworth Library Building (CWLB1) and will be attached to the north end of the conference centre building next to CWLB1 on an existing grassed area. The new Clifford withworth library building will be a ‘mirror image’ of CWLB1 with regard to its horizontal plan and height dimensions.
In this situation, the University is keen to maximise value or eliminating any unnecessary costs on any new building projects when the current economic climate is given. It also wants an environmentally sustainable building which can obtain a high BREEAM rating
The picture in above show the current Clifford Whitworth Library existing building and the new proposed library building.
Project brief for Task A
In this Task, I have to produce a report such as value engineering analysis of the existing CWLB 1 building and identified of functional components of the building with approximate cost breakdown and 80/20 histogram, other than that, I have to analyse the 4 major components such as roof, floor and wall etc. And detail analysis in combined scoring matrix of 1 major component, with explanation and justification of criteria and alternatives.
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The cost plan show at the below is the cost for Clifford whitworth Library building 1 is £ 5,417,936.52. In this project, I have use BCIS analysis 21757, 22865 and 21620 to analyze the cost of element or price per meter square for this specification material. In lieu of this I have used external quotations for a number of the elements, and Spon’s Architectural Price Book 2010 for the balance.
The Clifford Whitworth Library building 1 project taken in BCIS which located at Greater Manchester. The cost analysis will therefore need general adjustments for inflation and location factors. Inflation can be dealt with by using a tender price . According to the BCIS for Elemental analysis number 21757 in 2002, the cost per m2 for roof is £42.43 and the cost is £12,134, The Tender price value show the proposed project from the BCIS is 182(1Q2002) and the current is 209(4Q2010) .The variation factors are currently 91 for Greater Manchester and 107 for the Berkshire. All these data can be obtained from BCIS. Using the above information, the cost analysis can be adjusted as follows:
Updated cost analysis = cost analyisis X current tender price index/regional price tender X Greater Manchester regional index/ Berkshire regional index
= 42.43 X 209/182 X 91/107
Revised Cost analysis = £41.44 x 5381.52 m2 = £ 223,010.19
Specification for cost plan Clifford Whitworth Library Building 1
PCC driven piles. Concrete pile caps, ground beams and 150mm slab.
PCC columns supporting upper floor; steel/timber supporting rafters.
RC upper floors on permanent formwork.
270m2 mono-pitched metal clad library roof; 69m2 metal clad plywood decking on timber rafters. Langley roofing to entrance (25m2). Aluminium rainwater pipes.
Ditto, basement to second floor
Rendered block/block walls; larch Rainscreen cladding; double glazed aluminium curtain walling.
Windows and external doors
Double glazed powder coated aluminium windows. Oak panelled entrance doors; aluminium louvred doors to plant room.
Internal walls and partitions
Block and metal stud partitions. PCC walls to lift and stairs; 2No glazed timber lightwells to 1st floor.
Ash veneered flush doors.
Plaster and emulsion; high level acoustic panels.
Vinyl sheet, tufted loop pile carpet and non-slip ceramic tile floorings.
Veneer to underside of roof panels. Plasterboard, timber and other suspended ceilings.
White vitreous china sanitaryware; Doc M pack.
Soil and waste pipes.
Hot and cold water services.
Space heating and air treatment
Gas fired low temperature hot water central heating. Air handling unit and VRV air conditioning.
Extract ventilation to toilets and kitchen. Natural ventilation.
Electric light and power. Emergency lighting.
Lift and conveyor installations
10-person, 800kg; 3 stops; 0.75m/s;
Fire detection and alarm. CCTV, data and telephone cables; PA.
Rainwater harvesting; BMS.
Builder’s work in connection
Builder’s work in connection with services.
Excavation to reduce levels. Concrete block paviours.
Foul and surface water drainage.
Gas, water, electricity mains. External lighting.
8% of remainder of Contract Sum (excluding Contingencies).
4.41% of remainder of Contract Sum (excluding Preliminaries).
The Histogram for old Clifford Whitworth library building 1 show that the percentage from the element of the total cost of the building, the histogram show that the electrical installation cost the most in Clifford Withworth Library Building, they cost 9.54% of the total cost of the building, they cost £516,787.37. External walls are ranked second in the chart, they cost 9.33% of the total cost of the building, they cost £505,432.36. Frame is the third highest in the chart, they cost 9.29% of the total cost of the building.
The Fitting and furnishings are the lowest percentage of the Clifford Withworth library building 1, they cost only 0.11% of the 100% of the building, they cost only £6,027.30, the Disposal Installation are the second lowest in the chart, they cost only 0.20% of the building, last but not least, Gas installation are the third lowest in the chart, they cost approximately 0.21 %
The 4 major components i choose is roof, external wall, framce and upper floor.
Function Analysis System Technique (F.A.S.T. Diagram) in Roof
Protect the building
Acquire medium BREEAM rating
Life Cycle Cost
According to the FAST diagram, roof most common material is Aluminium and precast concrete, Steel and timber. Most of the Roof are normally protects against the rain, other than that, the roof also can protect the sunlight or heat and wind, the rating BREEAM for Sustainably will be medium. The insulation of the Roof is they can prevent the heat, cold and the noise.
F.A.S.T. Diagram in External wall
Protect the building
Acquire high BREEAM Building
According to the FAST diagram, External wall use to support the Roof and ceiling, they also can protect the building area when external wall have installed. The rating BREEAM Building for the suitainably is high. They also have a advantages on the insulation, they can prevent the noise and wind
F.A.S.T. Diagram in Frame
Good in fire resistance
According to the FAST diagram, Frame most common material is Timber, Reinforced concrete and steel, frame are very fast in construction process, they are very good in sustainable and last but not least, frame also can make the easier to navigate and the frame also can make it easier to design and maintain your site.
F.A.S.T Diagram in upper floor.
Good in fire resistance
According to the FAST diagram, Upper floor most common material is timber, reinforced concrete and steel, Upper floor are very good insulation in Sound, the Upper floor are very fast in construction process, they are very good in fire resistance and sustainable.
Combined Scoring matrix in the external wall
Critiria Combined matrix
Time for construction
Exterior wall Alternatives
( 2 )
( 2+2 )
( 2+2+3 )
Weight of importance (1-10)
Glazed curtain wall
Solid concrete block wall
According to the combined scoring matrix, we are concerned more on the cost and time instead of design in Clifford Whitworth library building 1, the combined scoring matrix show that which type of the external wall is the best choice for the new proposal building in term of the criteria matrix, In the end, the brick and block wall are the best choice for alternative to proposed the new Clifford whitworth library building with a score of 89 points.
Project brief for task 2
In this report, we have to do the new proposal for the 4 components which selected in task 1 to improve the quality and cost of the building to propose the new Clifford Whitworth Library Building with explanation, structure and presentation. The 4 major components to propose the new building is roof, external wall, frame and upper floor.
Reinforced concrete are the best choice for the new Clifford Whitworth Library building, they are construct in the similar way as reinforced concrete floors beam and insitu cast concrete slab. Roofs are normally to support the self weight of the roof together with loading from heat, snow and rain, the roof also can prevent the wind pressure as well. The concrete roofs are normally constructed in flat roof, and library has no doubt to construct in flat roof.
R.Greeno (2007) stated that “The Strength for the reinforced concrete itself has compressive strength. The crushing strength of normal concrete will depend on its composition. The concrete are normally weak in tension, its strength in this respect being only one fourteenth to one eighth of its compressive strength.”
According to the Combined scoring matrix, solid concrete block wall are the best choice to proposed the new building. A solid concrete block wall is the filled solid with concrete and lightweight concrete blocks. As different to produce a concrete wall where the wall must be created from wood and poured with concrete, then the forms have to be removed, then the concrete block wall can be constructed more fast and easier because of the material construction.
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The solid concrete block wall have many advantages such as the wall is very solid in sustainable, other than that, they can over a formed and poured concrete wall. When the concrete walls formed, the wooden form built from plywood have been constructed, they are always subject to misalignment, even after they have been squared and leveled, because of the flexible nature of the wood.
The solid concrete block walls are good in sound insulation. which means the solid concrete block walls are suitable to construct in the library . the solid concrete block wall are good in fire resistant, which means the building not easily to get burnt.
Frame most common material is Timber, Reinforced concrete and steel, but steel framed are the most suitable frame structured for the new building, the designed for steel framed is the connection between the separated member treated as either non-rigid or fully rigid joints.
Steel are made under factory conditions are subject to british standards. The strength of a steel frame is controlled and established during manufacture. On fire resistance, steel frame have no doubt with the fire resistance, but the still will get weaker in strength when the temperature hit 299 Celsius above. In construction process, still frame can reduced up to 50% compare to the traditional methods, in this result, steel frame can reduces cost during construction process.
Steel frames can live straight, but the timber only can move and warp, twist and shrink during and after construction. This considerably reduces in progress maintenance, as there are less call backs for things like plasterboard cracking or framing popping.
Steel framing can span long distances, allowing greater design flexibility. Interior walls can be placed without load-bearing considerations compared to timber framing and other framing.
Last but not least, Concrete Upper floor is my best options to propose the library because they are good in sound insulation between floor to floor, Concrete Upper floor also good in fire resistant, they can ranging for half and hour to 1 hour depend on the floor type.
The concrete upper floor have a good quality, the concrete floor can be act as a thermal store which can reduce in the heating price especially the floor heating systems are used. The precast concrete floor can span longer than timber floor, the precast concrete can small span up to 4.6 m in one- way span.
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