ABSTRACT
Stone: Artificial 2242 Granite 2642 Bath 2242 Marble 2742 Blue Pennant 2682 Portland 2170 Cragleith 2322 Slate 2882 Darley Dale 2370 York 2402 Forest of Dean 2386 Terra-cotta 2116
Wood
Blockboard 500 Jarrah 816 Cork Bark 80 Maple 752 Hardboard: Mahogany:
Standard 940 - 1000 Honduras 576 Tempered 940 - 1060 Spanish 1057
Wood chipboard: Oak: Type I 650 - 750 English 848 Type II 680 - 800 American 720 Type III 650 - 800 Austrian & Turkish 704 Type II/III 680 - 800 Pine:
Laminboard 500 - 700 Pitchpine 800 Timber: Red Deal 576
Ash 800 Yellow Deal 528 Baltic spruce 480 Spruce 496 Beech 816 Sycamore 530 Birch 720 Teak: Box 961 African 961 Cedar 480 Indian 656 Chestnut 640 Moulmein 736 Ebony 1217 Walnut: Elm 624 English 496 Greenheart 961 Black 720
MEMORANDA FOR EACH TRADE
EXCAVATION AND EARTHWORK
Transport capacities Capacity of vehicle
Type of vehicle m3 (solid)
Standard wheelbarrow 0.08 2 ton truck (2.03 t) 1.15 3 ton truck (3.05 t) 1.72 4 ton truck (4.06 t) 2.22 5 ton truck (5.08 t) 2.68 6 ton truck (6.10 t) 3.44 2 cubic yard dumper (1.53 m3) 1.15 3 cubic yard dumper (2.29 m3) 1.72 6 cubic yard dumper (4.59 m3) 3.44 10 cubic yard dumper (7.65 m3) 5.73
Planking and strutting
Maximum depth of excavation in various soils without the use of earthwork support
Ground conditions Metres (m)
Compact soil 3.65 Drained loam 1.85 Dry sand 0.30 Gravelly earth 0.60 Ordinary earth 0.90 Stiff clay 3.00
It is important to note that the above table should only be used as a guide. Each case must be taken on its merits and, as the limited distances given above are approached, careful watch must be kept for the slightest signs of caving in.
