General (Level 1 entries/other) Flashcards
In Construction Technology, you mention awareness of common building components - can you give me some costs, duration, for these elements and how these are measured?:
-Foundations (strip foundations vs piled foundations)
-Shell (say, external walls)
-Roof (say pitch (tiled), flat (bauder))
Foundations (strip):
-Excavate trench 600mm wide, partial backfill, partial disposal, earthwork support
(risk item), compact base of trench, plain in situ concrete 20.00 N/mm² – 20mm
aggregate (1:2:4), 250mm thick, 3 courses of common brick up to DPC level,
cavity brickwork/blockwork in cement mortar (1:3), pitch polymer damp-proof
course machine excavation
With 3 courses of common brick outer skin up to DPC level (PC bricks
@ £240/1000)
600mm× 1000mm deep m 125.00 to 150.00
Foundations (piled):
Enabling works
excavate to form piling mat; supply and lay imported hardcore – recycled
brick and similar to form piling mat m3 11.20 to 13.50
provision of plant (1 nr rig); including bringing to and removing from site;
maintenance, erection and dismantling at each pile position item 16500.00 to 20000.00
Supply and install concrete Continuous Flight Auger (CFA) piles; cart away
inactive spoil; measure total length of pile
450mm dia. reinforced concrete CFA piles m 47.50 to 57.00
Pile testing
using tension piles as reaction; typical loading test 1000 kN to 2000 kN item 7300.00 to 8900.00
integrity testing; minimum 20 per visit nr 12.40 to 15.00
Secant wall piling, 750mm dia. piles’ including site mobilization and
demobilization; Measure total area of piling (total length × total depth)
supply and install secant wall piling m2 250.00 to 300.00
Steel sheet piling; Measure total area of piling (total length × total depth)
interlocking steel sheet piling to excavation perimeter; Corus LX or similar;
extraction on completion m2 170.00 to 205.00
External walls:
Brick/block walling; cavity walls
Cavity wall; facing brick outer skin; insulation; with plaster on standard weight
block inner skin; emulsion (U-value = 0.30W/m2 K)
machine-made facings; PC £550.00/1000 m2 125.00 to 150.00
Roof (pitched, tiled)
Timber trusses with tile coverings
Timber; roof plan area (unless otherwise described)
Timber roof trusses; insulation; roof coverings; PVC rainwater goods;
plasterboard; skim and emulsion to ceilings (U-value = 0.25W/m2 K)
clay plain tile coverings m2 175.00 to 210.00
Roof (flat, Bauder)
Flat roofing systems
Includes insulation and vapour control barrier; excludes decking (U-value =
0.25W/m2 K)
single layer polymer roofing membrane m2 84.00 to 100.00
single layer polymer roofing membrane with tapered insulation m2 150.00 to 180.00
20mm thick polymer modified asphalt roofing including felt underlay m2 87.00 to 105.00
high performance bitumen felt roofing system m2 110.00 to 130.00
high performance polymer modified bitumen membrane m2 115.00 to 140.00
In Construction Technology, you mention Planning Conditions and Building Regulations - can you tell me fees for these? Timescales?
Planning Application:
-cost depends on size of project, type, new build, repair, etc say from £250 (household) to £15k (erection of building not a dwellinghouse)
- say, 3months
- Types:
Outline
Full
Building Control Application:
-cost depends on size of project, application and inspection range from say £1000 to £7000 (non domestic dwellings).
- say, n/a
- There are 3 types of applications you can submit:
building notices
full plans
regularisation
In QCCW, please define/describe/ the following that you mention:
Cost/2 (GIFA)
Function Unit
NIA
GIA
GEA
Standard units of measure
NRM - Categories of Costs and Methods of Measurement and Costing
IPMS
Sourcing costs from BCIS, Spons, obtaining quotations; in-house data.
Cost/2 (GIFA) -
Function Unit - ref EL
NIA - ref EL
GIA - ref EL
GEA - ref EL
Standard units of measure - UOM identified for building components in NRM 1 or 2 for defined works so that industry has common understanding of inclusions and measures.
NRM (Work items; sub-elements - units; sub-elements - cost source)
-Superstructure; Roof; Roof Coverings
-Superstructure; Internal Walls and Partitions; Moveable Room Dividers
-Internal Finishes; Ceiling Finishes; Demountable suspended ceilings
-Services; Electrical installations; Lighting installations
IPMS - (ref Q&A session with EL 12.06.24)
Sourcing costs from:
BCIS - I use primarily for:
-cost modelling when I don’t have in-house models to compare a new project to.
-for TPI indices
-for location indices
Spons - I use primarily for:
- very specific work items which I don’t have benchmark in-house rates for (measured works section)
- developing rates from first principles ie breakdown of costs by material, plant, labour, associated materials.
Quotations - I use primarily for:
- When a works item has been clearly defined/specified
- For works bespoke to the project eg demolition
- For novel items eg works which unusual and may have a high functional/aesthetic requirement eg decorative fencing; sustainable technologies eg green roofs; etc
-nominated/named supplier or specified product eg specific window supplier
In-House Data - I use primarily for:
-first port of call ie most accurate rates - we do a lot of similar works/projects and in the same geographical locations.
In DECP, you mention making adjustments in estimates to account for ‘market conditions’ and ‘economic’ factors - can you give me some examples of these and how they might be calculated and incorporated into an estimate?
Making adjustments to estimates:
Market Conditions - demand from contractors ie is the market active and contractors are overworked? Calculation: increase OHP %.
- area of the country ie London more expensive than say Cumbria? Calculation: Location indices.
Economic Factors - Interest rates; inflation rate; energy prices; labour and material availability? Calculation - use regularly updated TPI indices; obtain latest cost data on specific materials eg steel prices; make adjustments for labour rates
