ABSTRACT
Material Description Quantity kg/m2 kg/m3 of unit
aluminium cast 2 770 aluminium roofing longstrip 0.8 mm 3.70 asphalt roofing with vapour barrier 20 mm 47.00 ballast loose, graded 1 600 bituminous felt 3 layers + vapour 11.10
roofing barrier blockboard sheet 18 mm 10.50 blockwork high strength 100 mm 220.00
aerated 100 mm 64.00 lightweight 100 mm 58.00 foundation 255 mm 197.00
brass cast 8 425 brickwork blue 115 mm 276.60 2 405
engineering 115 mm 250.00 2 165 sand/cement 115 mm 240.00 2 085 London stock 115 mm 212.00 1 845 fletton 1 795
calcium silicate board sheet 6 mm 5.80 cement 1 440 concrete reinforced 2% steel 2 400
plain 2 300 chalk 2 125 chipboard flooring grade C4 18 mm 13.25
furniture grade C1A 18 mm 11.75 chippings flat roof finish 1 layer 4.75 clay undisturbed 1 925 copper cast 8 730 copper roofing longstrip 0.6 mm 5.70 cork granulated 80 cork insulation board 50 mm 6.50 cork flooring tiles 3.2 mm 3.00 felt roofing underlay 1.30
Weights of materials – continued
Material Description Quantity kg/m2 kg/m3 of unit
glass clear float 4 mm 10.00 clear float 6 mm 15.00 clear float 10 mm 25.00
glass wool quilt 100 mm 1.02 gravel loose 1 600 hardboard standard 3.2 mm 2.35 hardboard medium 6.4 mm 3.70 hardwood greenheart 1 040
oak 720 iroko, teak 660 mahogany 530
hardwood flooring boards 23 mm 16.10 iron cast 7 205 lead cast 11 322
sheet code 4 20.40 sheet code 7 35.72
lime lump 705 quick 880
linoleum sheet 3.2 mm 4.50 MDF sheet 18 mm 13.80 mortar lime 1 680 partitions plastered brick 115 + 25 mm 250.00
plastered block 100 + 25 mm 190.00 p/b & skim on
timber studs 100 + 25 mm 120.00 parquet flooring 15 mm 7.00 paving concrete 50 mm 122.00 patent glazing alum.bars @ single 19.00
600 mm c/c alum.bars @ double 35.00
600 mm c/c perspex corrugated sheets 4.90 plaster lightweight – 2 coat 13 mm 10.20
hardwall – 2 coat 13 mm 11.60 lath and plaster 29.30
plasterboard gyproc wallboard 9.5 mm 9.00 plaster skimcoat 3 mm 2.20
plywood sheet 6 mm 4.10 polystyrene expanded, sheet 50 mm 0.75 PVC roofing single ply membrane 2 mm 2.50
Material Description Quantity kg/m2 kg/m3 of unit
quarry tiles laid in mortar 12.5 mm 32.00 roofing tiles clay – plain 100 mm
gauge 77.00 clay –
single pantile 315 mm gauge 42.00
concrete – double roman 343 mm
gauge 45.00 concrete –
flat slate 355 mm gauge 51.00
rubber stud flooring tiles 4 mm 5.90 sand dry 1 600 sarking felt 1.30 screed cement/sand 50 mm 108.00 shingle coarse, graded, dry 1 842 shingles roof, untreated 95 mm 8.09
gauge tantalized “ 16.19
slate slab 25 mm 70.80 slate roofing best 4 mm 31.00
medium strong 5 mm 35.00 heavies 6 mm 40.00
snow fresh 96 wet, compact 320
softboard sheet 12.5 mm 14.45 softwood pitch pine, yew 670
spruce 450 western red cedar 390
softwood flooring boards 22 mm 12.20 soil loose 1 440
compact 2 080 stainless steel longstrip 0.4 mm 4.00
roofing steel mild 7 848
sheet 1.3 mm 10.20 stone slate 2 840
marble 2 720 granite 2 660 York 2 400 Bath 2 100
Weights of materials – continued
Material Description Quantity kg/m2 kg/m3 of unit
stone chippings 1 760 tarmac 25 mm 53.70 thatch including battens 300 mm 41.50 terrazzo paving 16 mm 34.20 timber see hardwood
softwood vinyl flooring tiles 2 mm 4.00 water 1 000 weatherboarding softwood 19 mm 7.30
25 mm 8.55 woodwool slabs 50 mm 36.60 zinc cast 6 838 zinc roofing longstrip 0.8 mm 5.70
The unit of force, the newton, is derived from the unit of mass through the relationship that force is equal to mass times the gravitational pull of 9.81 metres per second per second (9.81 m/s2), in the direction of the force, e.g. 1 kilogram f = 9.81 newtons. For approximate purposes 100 kgf = 1 kN.
