What are they and what are they used for?
Contract Documents
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Architects working drawings
Specifications
Schedules
Bill of Quantities
Working Drawings
Block Plan
Scale 1:2500, 1:1250. This is used to identify the
proposed site in relation to the surrounding area
Working Drawings
Site Plan
Scale 1:500, 1:200. This
gives the position of the
proposed building and the
general layout of roads,
services and drainage on
the site.
Working Drawings
General Location Plan
Scale 1:200, 1:100, 1:50. These show the position
occupied by the various areas within the building and
identify the location of the principal elements and
components.
Working Drawings
General Location Plan
Scale 1:200, 1:100, 1:50. These show the position
occupied by the various areas within the building and
identify the location of the principal elements and
components.
Working Drawings
Detail Drawing
Scale 1:10, 1:5, 1:1. This
will show all the information
that is required in order to
manufacture a particular
component.
Specifications
• Supplements the Working drawings
• Not possible to add all the information on
to the drawings
• A precise description of all the essential
information and job requirements that will
affect the price of the work but cannot be
shown on the drawings
• Typical items found in a specification
include;
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Site description
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Restrictions
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Availability of services
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Description of materials
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Description of workmanship
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Other requirements: site clearance, making
good, nominated suppliers and subcontractors
External Walls
275mm external wall consisting of 100mm brick outer
skin, 75mm cavity with 75mm Rockwool cavity wall
batts. 100mm Thermalite Shield load bearing block
work or similar approved. Cavity to be closed using
Rockwool; TCB cavity barrier. External d.p.c. to
150mm above ground level. Wall ties to BS.1243
spaced at 900mm maximum centres horizontally,
450mm maximum centres vertically, staggered 225mm
centres vertically at openings. Below d.p.c two skins of
brickwork and cavity filled with concrete up to 150mm
below lowest d.p.c. Internal finish to be 14mmtwo coat
plaster to block work. Brickwork and block work to be
in accordance with BS.5628:Parts 1-3.
Windows
Wood windows and doors draught sealed. Toughened
glazing to comply with BS 6206:1987 to be used in
windows up to 800mm from floor level and 300mm either
side in skylights to doors. Doors to have toughened
glazing up to 1500mm from floor level. All windows and
doors to have 4-6-4 factory sealed double glazed units.
Glass to be clearly marked to British Standard by
Approved Glazier prior to installation on site.
Emergency escape windows-opening lights indicated
thus F E to have minimum unobstructed opening of
0.33mm2 and at least 450mm high and 450mm wide.
The bottom of the opening area to be 1100mm
maximum and 800mm minimum finished floor level.
Schedules
• Used to record repetitive design
information about a range of similar
components
• the main areas where schedules are used
includes: Doors, frames, linings, windows,
ironmongery, finishes, (floor, wall, ceiling),
lintels etc.
• Schedules need to be used in conjunction
with range drawings and floor plans
DOOR AND IRONMONGERY SCHEDULES
DOOR RANGE DRAWING
DOOR AND IRONMONGERY SCHEDULES
FLOOR PLAN
Using the door and ironmongery schedule given
to you, work out the following:
1.State the purpose of schedules.
Schedules are used to record repetitive design information.
Read in conjunction with floor plans, they may be used to
identify a type of door, its size, the number required, the
door opening in which it fits, the hinges it will swing on and
details of other furniture to be fitted to it.
2. How many type INT1 painted doors are
required?
Eight
3. State the size and type of door, and the
ironmongery for the doorway D4.
686mm x 1981mm x 35mm, INT 2, 2 x 75mm Chrome
Butts, Mortise latch, Latch lever, 2 x Coat hook
4. Produce a list of hinges required for all the
doors on the schedule.
3 x 100mm Brass butts
3 x 100mm Steel butts
24 x 75mm Chrome butts
3 x 250mm Tee hinges
5. Produce a list of locks/latches/bolts
required for all the doors on the schedule.
1 x Rim night latch
2 x mortise deadlocks
7 x Mortise lock/latch
6 x Mortise latch
5 x 100mm Chrome bolt
6. List all the ironmongery for D1
3 x 100mm Brass butts
1 x Rim night latch
1 x Mortise deadlock
2 x 100mm Chrome bolts
1 x Letter plate
1 x Security Chain
2 x Hinge bolts
2 x Keyhole escutcheons
Bill of Quantities
• Based on drawings specifications and
schedules
• Ensures estimators for the contract
prepare tenders from the same information
• Each item is priced individually this helps
with the costing of any alterations to the
contract
BILL OF QUANTITIES
• Quantity surveyors create the Bill of Quantities. It is
simply a task of measuring construction work required to
implement the architects' design for new or renovated
buildings.
• Pricing of different items of work are done on the
basis of the cost of materials, equipment, labour,
and overheads and profit.
• Materials: The materials costs are calculated by
examining the material quotations received from
suppliers, applying appropriate wastage factors,
and delivery charges.
• Equipment: Cost of equipment is calculated
usually as a percentage of the cost of materials.
Depending on whether the equipment is owned
or rented, this percentage will vary.
• Labour: The most difficult element to price is the
labour cost. Allowances for absences due to
sickness, loss of time due to bad weather,
overtime, etc. are required to be built in to arrive
at an all-inclusive labour rate. Rate of
productivity is another factor that plays an
important role in fixing labour prices.
• Overheads and profit: Once the cost of
materials, equipment, and labour has been
added up, a percentage for profit is added to the
item rate. This percentage may vary from project
to project depending on how well the Bill of
Quantities has been prepared by the QS. It may
range from 2.5 to over 25 percent.