This section is from the book "Modern Buildings, Their Planning, Construction And Equipment Vol2", by G. A. T. Middleton. Also available from Amazon: Modern Buildings.
Provide for keeping all excavations clear of water by baling, pumping, or otherwise, and include for all necessary planking and strutting to excavations and trenches.
When planking and strutting has been measured (as it should be except in a small job where the digging is shallow), the latter part of this clause will, of course, be omitted.
The concrete for foundations to be composed one part of blue lias lime to five parts of clean ballast and sand by measure well mixed dry, sufficient water added through a rose to bring it to the required consistency, and the whole thoroughly mixed in sufficient quantities only for immediate use; deposited in trenches and lightly rammed with a wooden rammer till the scum rises to the surface.
The lime mortar to be composed of one part of grey Dorking lime to three parts of sand.
The cement mortar to be composed of one part of Portland cement to three parts of sand.
The Portland cement to be of the best quality from an approved manufacturer, and to weigh 112 lbs. per striked bushel.
The sand to be clean sharp river or pit sand.
The bricks, where not otherwise slated, to be approved hard well burnt stocks. Carefully wet all bricks before laying, and well flush tip in mortar as the work proceeds. No bats will be allowed except where necessary for the bond.
All excavation to include for grubbing up old foundations.
This last clause will only apply to the site of an old building.
The various subheadings in each trade should also be followed by any description which may save subsequent repetition in the Bills, or any note which may affect the value of any of the items, as, for example:-