Page 69 - SMM2 eBOOK
P. 69
SECTION K
WATERPROOFING AND ASPHALT WORK
Generally
K.1 Classification of work
1. Work shall be classified according to the kind of matefials and given together with its
associated skintings, angle-fillets and labours under an appropriate heading:
a. Damp proofing and tanking.
b. Flooring and underay.
c. Paving.
d. Roofing.
K.2 Measurement
1. Particulars of the following shall be given:
a. Kind and quality of material.
b. Thickness and number of coats and layers.
c. Nature of base.
d. Surface treatment.
2. Coverings shall be measured the area in contact with the base but no deduction shall be
made for voids not exceeding 0.50m2.
3. Coverings over 300mm wide shall be given in square metres. Such work not exceeding
300mm wide shall be given in metres stating the width in stages of 150mm. Classification
shall be as follows:
a Flat ooverings which shall include ooverings to falls or cross-falls and sloping
coverings not exceeding 10° from horizontal. Intersection on works to cross falls
shall be deemed to be included with the items.
b. Sloping coverings over 10° but not exceeding 45° from horizontal.
c. Sloping coverings over 45° from horizontal and vertical coverings (grouped
together).
4. Coverings in isolated areas not exceeding 1.00m2 each shall be enumerated.
5. Paper, felt, cork, fibreboard or other underlay in contact with waterproofing and any
reinforcement shall be given in the description of the work in which they occur. Cutting,
notching, bending and lapping the underlay and the reinforoement shall be deemed to be
included with the items.
6. Work which will be subsequently covered shall be so described.
7. Work and labours carried out overhand or in confined situations (where at least 0.60m of
working space cannot be provided) shall each be so described.
8. Work and labours on retaining walls, in sections, and where continuity of laying will be
interupted by obstructions shall each be so described. Jointing between sections shall be
deemed to be included with the items.
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