Page 135 - SMM2 eBOOK

V.3 Disposal of water

Disposal of water shall be given in accordance with clauses D.15 -16.

V.4 Beds, benchings and coverings

1. Beds, benchings and coverings shall each be given separately in metres stating:

a. Nominal size of the pipe to be laid.
b. Widths and thickness of the beds, benchings, haunching, surrounds and the like.
c. Materials from which the beds, benchings, haunching, surrounds and the like are to
be constructed. Any formwork required shall be deemed to be included.

V.5 Pipework and surface water channels

1. Pipes (measured over all pipe fittings) shall each be given in metres stating the kind and
quality of pipe, the nominal size and the method of jointing. Any pipes not laid in bottom of
the trench (e.g. found in a multipurpose trench) shall be given separately and the depth
stated in accordance with the depth-range stages as clause V.2.1.

2. Suspended pipes including the supports shall be so described. Classification shall be as
follows:

a. In ducts in the ground or below the floor.
b. Bracketed off walls, stating the average height above the floor.
c. Suspended from sofffits, stating the average height above the floor.

3. Vertical pipes shall be so described.

4 Pipe fittings shall each be described and enumerated as extra over the pipes in which
they occur. Cutting and jointing pipes to fittings and providing everything necessary for
jointing shall be deemed to be included.

5. Accessories (e.g. gullies, traps, inspection shoes, fresh air inlets, non~return flaps, etc.)
shall each be described and enumerated stating the kind, quality and size of the
accessory and the nominal size of each inlet and outlet. Jointing pipes to such
accessories, bedding in concrete and providing gratings, sealing plates and the like shall
be given in the description of the item.

6. Surface water channels (measured over all fittings and cascades) shall be given in metres
stating the kind and quality of drain, the size and method of jointing. Angles, ends, outlets,
intersections, jointing to sumps or other drains and formwork to concrete shall be deemed
to be included with the item.

7. Cascades shall be described fully and enumerated as extra over the drain in which they
occur stating the number of steps in cascade and the total drop.

Sumps, manholes, soakaways, cesspits, septic tanks, imhoff tanks and tbe like

V.6 Generally

1. Sumps, manholes, soakaways and the like shall each be grouped together and given in
detail under an appropriate heading stating the number.

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