Page 96 - SMM2 eBOOK

Sheet metal, wiremesh and expanded metal

P.8 Coverings

1. Coverings over 300mm wide shall be given in square metres The size of mesh in
wiremesh and expanded coverings shall be given. Coverings not exceeding 300mm wide
shall be given in metres stating the width

2 No allowance shall be made for laps and no deduction shall be made for voids not
exceeding 0.50m2

3. Raking cutting and curved cutting shall be deemed to be included.

4 Welted or beaded edges, burned, brazed or welded angles and welted seams shall be
deemed to be included.

5. 8ending at edges, dressing into hollows and dressing over kerbs shall each be given
separately in metres stating the girth of dressing into hollows and over kerbs. Bossed,
brazed, or welted ends, angles and intersections shall be deemed to be included.

6 Nailing or screwing at edges of coverings and linings shall be deemed to be included.

7 Ventilation ductwork shall be given in accordance with clauses Q.14-16.

8. Wiremesh panels shall be enumerated stating the size of the panels. Where panels are
other than rectangular the shape of the panels shall be stated. The diameter of the frame
wire shall be stated.

Holes, bolts, screws and rivets

P.9 Generally

1. Holes, countersunk holes, tapped holes and slots, in which they occur shall be deemed to
be included in the items.

2. Bolts, anchor-bolts and ragbolts (except where deemed to be included or where given in
the description of other items) shall each be enumerated separately stating the diameter
and the length Nuts and washers shall be given in the description.

3. Screwing, tap screwing and riveting (except where deemed to be included or where given
in the description of other items) shall be given in metres stating the spacing.

93