measuring line is forced into all the mouldings and corners. Windows are done at fo much a piece. And it is ufual to allow double measure for carved mouldings, &c. EXAMPLES. 1. How many yards of painting contains the room which is 65 feet 6 inches in compass, and 12 feet 4 inches high? Ex. 2. The length of room being 20 feet, its breadth 14 feet 6 inches, and height 10 feet 4 inches; how many yards of painting are in it, deducting a fireplace of 4 feet by 4 feet 4 inches, and two windows each 6 feet by 3 feet 2 inches? Anf. 73 yards. Ex. 3. What coft the painting of a room, at 6d per yard; its length being 24 feet 6 inches, its breadth 16 feet 3 inches, and height 12 feet 9 inches; alfo the door is 7 feet by 3 feet 6, and the window fhutters to two windows each 7 feet 9 by 3 feet 6, but the breaks of the windows themfelves are 8 feet 6 inches high, and foot 3 inches deep: deducting the fire-place of 5 feet by 5 feet 6? Anf. £3 3 101. CHAP Glaziers take their dimensions either in feet, inches, and parts, or feet, tenths, and hundredths. And compute their work in fquare feet. In taking the length and breadth of a window, the cross bars between the fquares are included. Alfo windows of round or oval forms are measured as fquare, measuring them to their greatest length and breadth, on account of the waste in cutting the glafs. EXAMPLES. 1. How many fquare feet contains the window which is 4.25 feet long, and 2.75 feet broad? 2. What will the glazing a triangular sky-light come to at 1od per foot; the bafe being 12 feet 6 inches, and the perpendicular height 6 feet 9 inches? Anf. 4 7 21. 3. There is a houfe with three tier of windows, three windows in each tier, their common breadth feet 11 inches; now the height of the firft tier is of the fecond of the third 10 Required the expence of glazing at 14d per foot. Anf. 13 II 101. Ex. 4. Required the expence of glazing the windows of a houfe at 13d a foot; there being three ftories, and three windows in each story; the height of the lower tier is of the middle of the upper 7f 9 gin I Anf. 12 5 5 6. and of an oval window over the door The common breadth of all the windows being 3 feet 9 inches. СНАРТER X. Of Pavers Work. Pavers work is done by the fquare yard. And the content is found by multiplying the length by the breadth. EXAMPLES. 1. What coft the paving a foot-path at 3s 4d a yard; the length being 35 feet 4 inches, and breadth 8 feet 3 inches? Ex. 2. What coft the paving a court at 35 2d per yard; the length being 27 feet 10 inches, and the breadth 14. feet 9 inches? Anf. £7 4 45. Ex. 3. What will be the expence of paving a rectangular court yard, whofe length is 63 feet, and breadth 45 feet; in which there is laid a foot-path of 5 feet 3 inches broad, running the whole length, with broad ftones at 3s a yard; the rest being paved with pebbles, at 2s 6d a yard? Anf. £40 5 10. CHAPTER XL. Of Plumbers Work. Plumbers work is commonly done by the pound or hundred weight; but I fhall below infert a method of discovering the weight by the measure of it. Sheet-lead used in roofing, guttering, &c, is commonly between 7 and 12 pound weight to the fquare foot; but the following table fhews by infpection the particular weight of a fquare foot for each of feveral thickneffes. Thick- lb. to a fq. [Thick-lb. to a fq. Thick-lb. to a fq. I 10 5.899 7373 15 8.848 11 6.489137.66816 9438 6.55414 8.258 9 19 11207 9.83121797 8.427 17 10.0281 21 12.387 In this table the thickness is fet down in tenths and hundredths, &c, of an inch; and the annexed correfponding numbers are the weights in avoirdupois pounds, and thousandth parts of a pound. So the weight of a square foot of or of an inch 2 thick, I thick, is 5 pounds and 899 thousandth parts of a pound; and the weight of a fquare foot to of an inch thickness, is 6 pounds and 554 of a pound. Leaden pipe of an inch bore, is commonly 13 or 14 lb to the yard in length. 1000 EXAMPLES. 1. How much weighs the lead which is 39 feet 6 inches long, and 3 feet 3 inches broad, at 84lb to the fquare foot? Ex. 2. What coft the covering and guttering a roof with lead at 18s the cwt; the length of the roof being 43 feet, and breadth or girt over it 32 feet, the guttering 57 feet long, and 2 feet wide; the former 9.831lb, and the latter 7.373lb to the fquare foot? Anf. 115 9 1 CHAP |