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.
K.2 Measurement (cont'd)
9. Curved work, conical work, spherical work and elliptical work shall each be so described irrespective of the radius. No distinction shall be made between straight and curved labours.
10. Internal angle-fillets shall be given in metres and shall be deemed to be in two coats or layers unless otherwise stated. Ends and angles shall be deemed to be included with the items.
11 Temporary rules shall be deemed to be included
K.3 Labours
1. The following shall be deemed to be included with waterproofing and asphalt works: a. Fair edges, rounded edges, drips and arris.
b. Turning nibs of waterproofing into grooves.
c. Working into outlet pipes, dishing to gullies and the like. d. Cutting to line for jointing new to existing.
e. Working to metal or other hashings against frames of manhole-covers, duct-covers, mat-sinkings and the like.
2. Working into recessed duct-covers, shaped insets, recessed manhole-covers, mat- sinkings and the like shall be given in metres as extra over the work in which they occur stating the width in stages of 150mm.
K.4 Skirtings, fascias and aprons
1. Skirtings, fascias and aprons shall each be given separately in metres stating the width on face. Stepped work and raking work shall each be so described. Internal angle filets (or dressing over tilting fillets) shall be given in the description. Fair edges, drips, arris, turning nibs into grooves, fair ends, stopped ends and angles shall be deemed to be included with the items. Stopped ends requiring an angle-fillet shail be dealt with as angles.
2. Skirtings on roof slopes shall be so described.
K.5 Gutters, channels, valleys and kerbs
1. Linings to gutters, channels, and valleys and coverings to kerbs shall each be given separately in metres stating the girth on face. Gutters to falls shall be so described. Internal angle-fillets and tilting fillets (or dressing over tilting filiets) shall each be given in the description. Arris, turning nibs into grooves, ends, angles, intersections and outlets shall be deemed to be included with the items.
2. Linings to gutters and valleys of stated or other roofs shall each be so described.
3. Working coverings into shallow channels shall be given in metres as extra over the coverings in which they occur stating the girth on face. Channels to falls shall be so described. Arris, ends, angles, intersections and outlets shall be deemed to be included with the items.
K.6 Cesspools and collars
1. Linings to cesspools, sumps and the like shall each be enumerated separately stating the size. Internal angle-filets shall be given in the description. Arris and outlets shall be deemed to be included with the items.
K.6 Cesspools and collars (cont'd)
2. Linings to bonding pockets, coverings to bonding blocks and the like shall each be enumerated separately stating the size. Internal angle-fillets shall be given in the description. Arrises shall be deemed to be inciUded with the items.
3. Collars around pipes, standards and the like members (grouped together) shall be enumerated stating the size of the members and length of collars. Internal angle-fillets shall be given in the description. Arrises shall be deemed to be included with the items. .
SECTION L
ROOFING
Generally
L.1 Classification of work
Work shall be classified according to the kind of material and each classification with its associated labours shall be given under an appropriate heading. Asphalt roofing shail be given in accordance with Section K and patent glazing in accordance with Section T.
L2 Measurement
1. Slate or tile roofing, corrugated or troughed roofing and roof decking shall be measured as carried out. Bitumen - felt roofing shall be measured the area in contact with the base. Sheet metal roofing, flashings and gutters shall be measured as the area of finished surface subject to the allowance in clause L.38. No deduction shall be made for voids not exceeding 0.50m .
2. Work to dormers and the like shall be so described.
3. Work to curved, conical and spherical roofs shall each be so described stating the radius or diameter at base. Work to elliptical roofs and other roofs curved to more than one radius shall be so described stating the radii.