Example
Example
H : Concrete in landing beam D : Reinforced concrete grade 20 in landing beam U : m3 Example Length Width High Nos of landing beam
H : Formwork to landing beam D : Formwork to sides and soffit of landing beam U : m2 Length Girth Nos of landing beam
H : Reinforcement in landing beam D : 16mm diameter high yield main bar in landing beam U : kg Length Nos of landing beam Nos of bar
H : Reinforcement in landing beam D : 6mm diameter mild steel bar in landing beam U : kg Length Nos of landing beam Nos of bar
H : Concrete in landing slab D : Reinforced concrete grade 20 in landing slab exceeding 100mm but not exceeding 150mm U : m3 Length Width High
H : Formwork to landing slab D : Formwork to soffit of landing slab U : m2 Length Width Note : Deduct beam
H : Formwork to landing slab D : Formwork to edges of landing slab U : m Girth
H : Reinforcement in landing slab D : 16mm diameter high yield main bar in landing slab U : kg Length Nos of bar
Length Nos of flight H : Timber Handrail D : 50mm x 100mm timber handrail complete with and including knot, prime, stop and paint one undercoat and two coats of gloss enamel paint U : m
no Nos of flight H : Baluster D : 25mm x 25mm x 3mm thick mild steel hollow section baluster U : no
no Nos of flight H : M.S plate screwed to handrail D : 38mm x 38mm x 3mm thick m.s plate screwed to timber handrail U : no
no Nos of flight H : M.S plate cast into concrete D : 6mm diameter m.s plate welded to hollow section baluster including drilling through 6mm thick plate and one end cast into concrete U : no
Same principle as formwork to slopping soffit of staircase H : Plaster to slopping soffit of staircase D : 20mm thick plaster to slopping soffit of staircase U : m2
Same principle as formwork to raking open string of staircase H : Plaster to sides of raking open string of staircase D : 20mm thick plaster to raking open string of staircase maximum width 300mm U : m
Same principle as formwork to sides and soffit of landing beam H : Plaster to sides and soffit of landing beam D : 20mm thick plaster to sides and soffit of landing beam U : m2
Same principle as formwork to sides of landing slab H : Plaster to sides of landing slab D : 20mm thick plaster to sides of landing slab U : m
Same principle as formwork to undercut riser H : Rendering to undercut riser D : 20mm thick rendering to undercut riser 150mm high U : m
Take the length of step @ width of 1 flight H : Rendering to tread D : 20mm thick rendering to tread 300mm wide U : m
Take the length of step @ width of 1 flight H : Nosing Tiles D : 150mm x60mm x10mm thick non slip nosing tiles, complete with all accessories bedded, jointed and pointed in cement and sand (1:3) mortar U : m
H : Painting on plastered soffit of staircase D : Prepare and apply one coat approved alkyd resisting primer sealer and two coats emulsion paint on plastered slopping soffit of staircase U : m2 Same principle as formwork to slopping soffit of staircase
H : Painting on plastered raking open string of staircase D : Prepare and apply one coat approved alkyd resisting primer sealer and two coats emulsion paint on plastered raking open string of staircase U : m Same principle as formwork to raking open string of staircase
H : Painting on plastered soffit of landing slab D : Prepare and apply one coat approved alkyd resisting primer sealer and two coats emulsion paint on plastered soffit landing slab U : m2 Same principle as formwork to soffit of landing slab
H : Painting on plastered sides of landing slab D : Prepare and apply one coat approved alkyd resisting primer sealer and two coats emulsion paint on plastered sides of landing slab exceeding 100mm not exceeding 200mm high U : m Same principle as formwork to sides of landing slab
H : Painting on plastered sides and soffit of landing beam D : Prepare and apply one coat approved alkyd resisting primer sealer and two coats emulsion paint on plastered sides and soffit of landing beam U : m2 Same principle as formwork to sides and soffit of landing beam
Exercise Staircase
ELEMENT ROOF Inclusive roof structure, covering and rain water goods Page 81
A roof is primarily designed to keep out rain including wind-driven spray from a building. 1. 2.It can also deny access to pests. In these day of energy conservation a roof can also contribute to preventing warmth being lost from a building. 3. Where a roof has insulation as an integral part of its structure it is called a warm roof. 4. WHAT IS A ROOF? ROOF DEFINITION : a)Flat roofs - 0 to 15 degree pitch b)Pitched or sloping roofs - 15 to 70 degree pitch TYPES OF ROOF CONSTRUCTION : There are two basic types of roof construction a)Flat roofs b)Pitched or sloping roofs
TAKING OFF LIST Wall plate - m Common rafter - m Hip rafter - m Jack rafter - m Ridge board - m Valley rafter - m Ceiling joist/Tie beam - m Purlin/Batten - m Barge/Fascia board - m Wrought surface - m ROOF STRUCTURE
TAKING OFF LIST Insulation - m2 Roof tiles - m2 Flashing - m Ridge capping - m Hip capping - m Valley capping - m ROOF COVERING
TAKING OFF LIST Gutter works Gutter - m Bend - no Stop end - no Nozzle outlet - no Balloon grating - no ROOF DRAINAGE RAINWATER GOODS Shoe - no Swan neck - no Outlet - no RWDP Downpipe - m Extra over:
H : Wall Plate / Sawn pressure treated Grade B timber as described: D : 100 mm x 50 mm sawn pressure treated Grade B timber as wall plate U : m Length Measured in M Describing the size and the method of fixing to wall or concrete beam Length of wall plate is measured from: Hip roof (measured according to the length of external wall) 1. Gable end (measured according to the length of external wall EXCLUDING the length of gable wall) 2.
H : Common Rafter / Sawn pressure treated Grade B timber as described: D : 100mm x 50mm common rafter U : m Measured in M stating the cross sectional dimension. To establish the number of rafters, measure the length of the roof and divide with the centre to centre of rafters Length Nos of rafter Pair Length of common rafter (x)= √ y² + z²
H : Hip Rafter / Sawn pressure treated Grade B timber as described: D : 100 mm x 45 mm hip rafter U : m Unit of measurement for hip rafter is M stating the cross sectional size The length of hip rafter cannot be obtained from directmeasurement using scale rule from drawing. Therefore it must be obtained through mathematical calculation. Using Pythagoras theorem Length of hip rafter = √ (half span)² + (length of crown rafter)² Length Nos of hip rafter
Normally used in hip roof and roof with valleys The best method to establish the length is to calculate its AVERAGE LENGTH. The length can be scale directly from drawings using scale rule It is measure in M H : Jack Rafter / Sawn pressure treated Grade B timber as described: D : 100 mm x 45 mm jack rafter U : m Length Nos of jack rafter
H : Fascia and Barge Boards / Wrought pressure treated Grade B timber as described: D : 267 mm x 25 mm thick fascia and barge boards. U : m Measure in m stating the cross sectional size If cross sectional is different between fascia and barge board then it is measured separately. Length Nos of barge board Length fascia barge
H : Purlin / Batten D : 100 mm x 45 mm purlin / batten U : m PURLIN - Normally used in roof using sheet type roof covering i.e corrugated asbestos-free cement sheet. BATTEN - Normally used in roof using tiled roof covering. Measured in M stating the cross sectional size Length Nos of purlin/batten Sides
H : Valley Board / Valley Rafter D : 100 mm x 45 mm valley board U : m Normally fixed on top of valley rafter so as to provide support for the positioning of valley gutter. Measured in M stating the cross sectional dimension. Length Nos of valley
H : Tie Beam/ Ceiling Joist / Joist D : 100 mm x 45 mm tie beam U : m Measured in M stating the cross sectional dimensions Measured directly from drawing using scale rule. Length Nos of tie beam
H : Strut D : U : m Measured in M stating the cross sectional dimensions Measured directly from drawing using scale rule. Length Nos of strut
H : Ridge Boards D : 225mm x 38mm ridge board U : m Measured in M stating the cross sectional dimensions Measured directly from drawing using scale rule. Length
Normally, there are 2 types of finishes for timber pitched roof: a)Tiled finishes i.econcrete, clay tile b)Covering in the form of sheet i.ecorrugated asbestos cement sheet
Length Width Sides H : Roof Covering D : “Monier” concrete interlocking roof tiling laid with 75mm head and side laps on and including mm x 25mm sawn pressure treated Grade B timber batten to sloping roof at 40°pitch, each tile on top and bottom course and every alternate course nailed in accordance with manufacturer’s recommendation. U : m2
Length Width Sides Function: to prevent the penetration of external heat into the building through the roof. Consisting a layer of heat insulation material normally made of aluminium and sometime fibreglass. H : Roof Insulation D : Approved single sided aluminium foil thermal insulation, laid under roof tiles with 150mm (minimum) side and end laps. U : m2 Same principles as roof covering