744 



APPENDIX. 



are both charged by weight, or by the number 

 of gallons of water they contain ; but in general 

 by weight. Close boilers of malleable-iron plates 

 cost about 20s. per cwt. Cast-iron boilers, cast 

 in loam, will cost about half that sum, say 14 s. 

 per cwt., although in some cases charged 10s. 

 Best malleable-iron boilers, § of an inch in thick- 

 ness, in plates, securely bolted and riveted, 

 30s. per cwt., Scotch prices. We in general use 

 wrought-iron boilers of the above thickness all 

 round, but some prefer to use them f of an 

 inch in the bottom, and j% on the sides and 

 top.— Of the latter thicknesses are the boilers 

 used in the New Reform Club House, Pall Mall, 

 London. Bolts and nuts, 4|d. per lb. 



Estimate of Prices. 



The cost of furnishing a brick wall with eyed studs, 

 at the rate of 5000 to 100 square yards, the studs 

 weighing 40 lb., at 2d. per lb., . £0 6 8 



With common cast-iron square-headed 

 nails, 5000 to the 100 square yards, 

 at l^d. per lb., weight 50 lb. . 0 6 3 



Cost of wiring 100 square yards with 

 iron wire, requiring 600 drilled studs, 

 30s. 1200 yards iron wire, (No. 12,) 

 112 lb., at 3*d. per lb., £1, 12s. 8d., 3 2 8 



Ditto, with copper wire, (No. 15,) will 



cost, for 100 square yards, . . 5 17 6 



CAST AND WROUGHT IRON FOR VARIOUS 

 PURPOSES USED IN HOTHOUSES. 



Cast-iron rafters are usually 4 inches deep, 

 and 4 an inch thick, cost from 8s. to 10s. per 

 cwt.; and for the same may be purchased 

 spouting, pillars, wall-plates, &c. Sashes cast in 

 a piece, if not large, 10s. to 12s. per cwt. Cast- 

 iron astragals, or sash-bars, of the size and weight 

 of 1 lb. to the lineal foot, 10s. to 12s. per cwt., 

 cast vertically. Cast-iron footpaths of elegant 

 patterns, from lis. to 12s. per cwt. If laid on 

 rails, and 18 inches wide, at Is. 6d. per square 

 foot ; without rails, at Is. per square foot. Cast- 

 iron espalier railing, of good form and sufficient 

 strength, weighs about 1 ton per 100 running 

 feet, and may be purchased at from £10 to £12 

 per ton. 



As there is little difference between the 

 weight of cast and wrought iron, the following 

 table may be useful, and is taken from Skir- 

 ving's calculations : — 



lb. oz. 



Half-inch square bar, per lineal foot, 



weighs . . . .0 13§ 



Five-eighth ditto, . . .15 



Three-quarter ditto, . . 1 14 



Seven-eighth ditto, . . .29 



Inch ditto, . . .36 



Inch and one-eighth ditto, . .44 

 One and a quarter, ditto, . .54 

 One and a half ditto, . .78 



Half- inch round bar, per lineal foot, 0 10g 



Five-eighth ditto, . . .10 



Three-quarter ditto, . . .18 



Seven-eighth ditto, . . .20 



Inch ditto, . . . . 2 10 



Inch and one-eighth ditto, . .35 



One and a quarter ditto, . .41 



One and a half ditto, . .5 14 



The following are Scotch prices : — 



Half-inch square bar costs 4d. per lin. yd. 



Five-eighth ditto, . 6d. ,, 



Three-quarter ditto, . 9d. ,, 



Seven-eighth ditto, . Is. Od. „ 



Inch ditto, . . Is. 3d. „ 



Inch and one-eighth ditto, Is. 7d. ,, 



One and a quarter ditto, 2s. Od. ,, 



One and a half ditto, 2s. lid. „ 



Half-inch round bar costs 3d. per lin. yd. 



Five-eighth ditto, . 5d. „ 



Three-quarter ditto, . 7d. ,, 



Seven-eighth ditto, . 9d. ,, 



Inch ditto, . . .is. Od. ,, 



Inch and one-eighth ditto, Is. 3d. ,, 



One and a quarter ditto, Is. 7d. ,, 



One and a half ditto, 2s. 3d. ,, 

 — exclusive of workmanship. 



CEMENTS. 



The cements in general use in Scotland are — 



Calderwood cement, 6s. 6d. per barrel of 3 

 cwt. in Edinburgh ; in Glasgow the same. 



Borrowstownness cement, manufactured in 

 Edinburgh, 10s. per barrel of 3 cwt. 



Broxburn cement, from 8s. to 10s. per bar- 

 rel of 3 cwt. — inferior in quality. 



Mulgrave or Atkinson's cement — excellent — 

 14s., in Edinburgh, Leith, or Glasgow, per bar- 

 rel of 2 ^ cwt. 



Dark Roman cement, 14s. per barrel of 1\ 

 ewt., in Edinburgh, Leith, or Glasgow — good 

 quality. 



Roman cement is sold in London at 2s. per 

 bushel, 6s. 3d. per barrel, and weighs 80 lb. per 

 bushel. Laid on brick at 2s. 2d. per square 

 yard. 



Metallic cement is sold in London at about 

 Is. 3d. per bushel, and weighs 100 lb. per 

 bushel. 



Mastic is sold in London at about 4s. per 

 cwt. This cement is the same as trowelled 

 stucco. 



10 barrels of good cement, with the proper 

 proportion of sharp sand, will plaster a rood of 

 36 superficial yards on the face of the wall 

 brickwork for tanks or reservoirs to contain 

 water. 



36 bushels of cement, and an equal quan- 

 tity of sharp sand, will do one rood of brick- 

 work. 



Portland cement, 2s. 3d. per bushel, London 

 price, weighs 3 cwt. 16 lb. per barrel. This is 

 considered the strongest cement in use, and 

 therefore takes more sand. 



STONE-MASONS' WORK. 



On account of the weight of this material, 

 the difficulty with which some quarries are 

 worked compared with others, and the distance 

 it has often to be transported, the price of stone 

 varies considerably. 



The principal pavement stone in Scotland is 

 that of Arbroath and Caithness ; the former 

 costing from 2d. to 4d. per square foot, accord- 

 ing to thickness, at the quarry. Other districts 

 produce pavement of varied quality, as may be 



