Orton & Sadler's Business Calculator And Accountants Assistant: a Cyclopædia ...
Orton & Sadler's Business Calculator And Accountants Assistant: a Cyclopædia ...
Hoy D Orton
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It is usual also to allow double measure at tbe eaves, so mucb as the projector is over tbe plate, which is commonly about 18 or 20 inches. Sky-lights and chimney shafts are generally de* ducted, if they be large, otherwise not. Ibcample 1. There is a roof covered with tiles, whose depth on both sides (with the usual allow- ance at the eaves) is 37 feet 3 inches, and che length 45 fbet; how many squares of tiling are eoBtMBed therein ^ 19 Digitized by Google 218 ORTON & 8ADLER*S CALCULATOR. BY ...DUODECIMALS. FBET. INCHES. 37 3 45 BY DECIMATE. 37.25 45 18625 14900 16 76.25 16 76 3 2. Of WaUxng, Bricklayers commonly measure their woTk bf the rod of 16^ feet, or 272^ square feet In some placet it is a custom to allow 18 feet to the rod ; that is, 324 square feet. Sometimes the work is measured by the rod of 21 feet long and 3 feet high, that is, 63 square feet ; and then no regard is paid to the thickness of the wall in measuringi but the price is regulated according to the tldck- ness. When you measure a piece of brick-work, the first thing b to inquire by which of these ways it must be measured; then, having multiplied th« length and breadth in feet together, divide the pro- duct by the proper divisor, viz.: 272.25, 324 or 63^ according to the measure of the rod, and the quo* dent will be the answer in square rods of thai measure^ But, commonly, brick walls that are nitsasurod bj the rod are to be roduoed to a standard thiok* Digitized by Google bricklayers' work.
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