Plain In-Situ Concrete Grade 7 as specified; blinding screed; laid on earth or hardcore Under pile caps/pad footings/ground beam/grd. Floor slab
Reinforced In-Situ Concrete Grade …… as specified In foundation in trenches In isolated foundation bases to columns (In No………) In ground beams
REINFORCEMENT
F.8.4 - CLASSIFICATION
In foundation (bases, ground beam & pile cap)
In ground slabs (beds)
In isolated column (stump)
F.8.5 - CATEGORIES
Straight and bend bars
Curved bars
Link, stirrups, binders and the like
Straight and bend bars (4 Y12) Link, stirrups, binders and the like (28 R8 - 250) Width – Conc. Covers (40mm) + Hooks (24 x diameter of bar)
REINFORCEMENT
Example:
Reinforcement bars; hot rolled plain round mild steel Reinforcement bars; hot rolled deformed high tensile steel In foundation in trenches In isolated foundations In ground beams In pile caps In pad footings
Foundations and beds (footings, pile caps bases, ground beams)
HEIGHT CATEGORIES (for height n.e. 1.00m)
Not exceeding 250mm high 250mm – 500mm high 500mm – 1.00m high
FORMWORKS
Example:
Class F1 formwork as specified to foundation and beds To edges & faces of pile caps To edges & faces of pad footings To edges & faces of strip footings To edges of beds To edges of slabs To ground beams To sides of column stumps
HARDCORE
D.23 – Classification of materials - Material arising from excavation
FILLING
- Material arising from excavation to be selected and treated
Hardcore of clean hard broken stones to be obtained off site at contractor own source
- Material to be obtained off site at contractor own source
D.26 – Filling to make up levels >250mm shall be given in m3 <250mm shall be given in m2 stating average thickness
EXCAVATION & EARTHWORK
D.27 – Filling deposited and compacted in layers >250mm shall be given in m3 stating
To make up levels not exceeding 250mm thick; average 250mm thick To make up levels over 250mm thick To make up l evels over 250mm thick; depositing in layers; ...mm maximum thickness
DAMP PROOF MEMBRANE
K.1 – Classification of Work a. Damp proofing & tanking b. Flooring & underlay c. Paving d. Roofing
K.2 – Measurement 1. Description shall include: - Kind & quality of material - Thickness & no. of coats & layers - Nature of base - Surface treatment 2. No deduction shall be made for voids
3. Covering > 300mm wide shall be in m2 < 300mm wide shall be in m (stating the width in stages of 150mm) Classification – a. Flat coverings n.e. 10° (horizontal) b. Sloping covering over 10° but n.e. 45° (horizontal) c. Sloping covering over 45° (horizontal & vertical) 4. Isolated areas n.e. 1.00m2 shall be enumerated
DAMP PROOF MEMBRANE Example: WBLFF Damp Proofing And Tanking Coverings; 1 layer of Polythene sheet as specified, 1000 gauge or 0.25mm thick; laid on hardcore Over 300mm wide; flat; not exceeding 10° from horizontal; subsequently covered Over 300mm wide; sloping 10 - 45 degrees from horizontal; subsequently covered Over 300mm wide; vertical or sloping over 45 degrees from horizontal; subsequently covered Not exceeding 150mm wide; flat; not exceeding 10° from horizontal; subsequently covered Not exceeding 150mm wide; sloping 10 - 45 degrees from horizontal; subsequently covered Not exceeding 150mm wide; vertical or sloping over 45 degrees from horizontal; subsequently covered
DAMP PROOF MEMBRANE
DAMP PROOF COURSE
G.28 – Generally 1. Description shall include: - Kind & quality of material - Gauge, Thickness or substances - Number of layers - Composition & mix of bedding material 2. No deduction shall be made for voids n.e. 0.50m2
Example:
BRICKWORK Damp Proof Course Bituminous damp proof course as specified; 150mm laps; bedding in cement mortar (1:1); no allowance in measurement for laps
> 225mm wide shall be in m2
On horizontal surfaces
< 225mm wide shall be in m (stating the width)
On raking surfaces
No allowance in measurement shall be made for laps
On vertical surfaces
Horizontal, raking, vertical & curved work shall be
On curved surfaces
DAMP PROOF COURSE
BRICKWORK
G.1.1 – Classification for heading a. Foundations b. Load bearing superstructure c. Non-load bearing superstructure
G.3 – Generally 1. Description shall include: a. Kind, quality & size of bricks b. Type of bond c. Composition & mix of mortar 3. Separate classes given stating the thickness a. Walls
Example:
BRICKWORK Foundation 225mm thick Clay brick as specified; in cement and sand (1:3) mortar in English bond Walls/Retaining walls/Lift walls
TUTORIAL 2 WORK BELOW LOWEST FLOOR FINISH
TUTORIAL 2 – WBLFF WORKS With reference to the following drawings and SMM2, take off the element WBLFF. 1.
Take off WBLFF works for Link House 20' X 70‘ Jenis A4 & A5
2.
Prepare the Bill of Quantity for the work
Remarks:
Excavate top soil for re-use in temporary spoil heaps 50m from site
All disposal of excavated material shall be removed from site at contractor own source
Filling of excavation arising – material arising from excavation
TAKING OFF LIST – TUTORIAL 2
Excavation top soil
Removal of excavated top soil
Excavation in pit to receive pile cap
Removal of excavated material
Excavation in rock for pit excavation
Excavation in trench to receive ground beam
Removal of excavated material
Excavation in rock for trench excavation
TUTORIAL 3 WORK BELOW LOWEST FLOOR FINISH
With reference to the following drawings and SMM2, take off the element WBLFF.
This is an individual assignment.
Notes: •
Excavate topsoil 150mm deep to be used on site
•
Hardcore shall be cleaned broken stones or bricks
•
Concrete to strip foundation shall be of Grade 20
•
All bricks shall be well burnt ordinary clay bricks
