Page 106 - SMM2 eBOOK

Builder's work

Q.31 Generally

1. Unless otherwise stated, all items of builder's work shall be given in accordance with the
appropriate sections.

2. Builder's work in connection with plumbing and mechanical engineering installations shall
be grouped together under an appropriate heading.

Q32 Particularly

1. Excavating trenches for pipes not exceeding 55mm nominal size shall be given in
accordance with claUse D.12.9. Excavating trenches for pipes over 55mm nominal size
shall be given in accordance with clause V.2

2. Inspection chambers shall be given in accordance with clause V.6.

3. Bedding and pointing components or units of equipment, ancillaries and the like shall be
enumerated stating the size thereof and the composition and mix of the bedding material.

4. Refractory linings and precast concrete linings to flues shall be given in accordance with
Section G.

5. Cutting and pinning ends of support shall be given as follows:

a. Supports for equipment, ancillaries and the like shall be enumerated stating the size
of the support and the nature of the background as clause Q.1.6.
b. Supports for pipes over 55mm nominal size shall be enumerated stating the size
and kind of pipe and the nature of the background as clause Q.1.6
c. Supports for pipes not exceeding 55mm nominal size (grouped together) shall be
given in metres (measured the length of pipework over all fittings) stating the
spacing of the supports and the nature of the background as clause Q.1.6.

6. Cutting away for and making good afler the plumbing and mechanical installations shall be
given as follows:

a. Holes for pipes and the like shall be given in accordance with the appropriate
section.
b. Mortices, sinkings and the like shall each be enumerated separately stating the size
thereof and the nature of the structure
c. Lifting and replacing existing chequer-plates and the like shall be given in metres.
d. Lifting and replacing existing floorboards (measured along the route of the pipe or
ducting) shall be given in metres stating the number and nominal size of pipe or
ducts. No distinction shall be made between routes parallel to or at an angle to the
floorboards. Cutting f oorboards and notching joists shall be deemed to be included
with the items.
e. Cutting chases shall be given in metres stating the number and nominal size of
pipes or ducts and the nature of the structure. Chases in existing work shall be so
described.

7. Pylons, poles, wall-brackets, pole-brackets, pole stays and the like for supporting
pipework shall each be enumerated separately stating the size, the method of fixing and
the nature of the structure.

8. Boring or excavating holes in the ground for poles and stays shall be enumerated stating
the depth, the nature of the filling and lhe treatment of surplus soil.

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