Εικόνες σελίδας
PDF
Ηλεκτρ. έκδοση
[blocks in formation]

3. OF CARPENTERS AND JOINERS WORK.

Carpenters and joiners work is that of flooring, partitioning, roofing, &c. and is measured by the fquare of 100 feet.

RULE. Multiply the length by the breadth, and divide this product by 100 for the content.

E. 1. If a floor be 25 feet 3 inches long, and 12 feet 6 inches broad, how many fquares will it contain ?

25,25

12,5

12625

5050

2525

How

Anfwer 3 15,6253 fquares, 15 feet.

many oaken planks will floor a room, 60 feet long, and 32 wide; fuppofing the planks each 12 feet long, and 1 foot wide?

E. 2.

First 1×12=12, the area of one plank.
And 60,5 × 32,5=1966,25, the area of the room.
*.* 12)1966,25(163,854 Planks, the answer.

E. 3. If a house within the walls be 22 feet 6 inches long, and 10 feet 3 inches broad, how many squares of roofing will cover it?

2)10,25 breadth

5,125 breadth

[merged small][merged small][merged small][ocr errors]

Anfwer 345,9375 = 3 fquares, 45 feet.

E. 4. If a house measure within the walls 52 feet 8 inches in length, and 30 feet 6 inches in breadth, and the roof be of a true pitch, what will it coft roofing, at 10s. 6d. per square?

First 30,5+15,25=45,75, width of the roof.

Then 52,66x45,75=2409 feet = 24 fquares 9 feet, the content of the room.

[blocks in formation]

Note. In measuring joiners work, the string is made to ply close to every part of the work over which it paffes.

4. OF SLATERS AND TILERS WORK.

Slaters and tilers work is measured by the fquare of 100 feet. RULE. Multiply the length in feet of the ridge, by the girt from eave to eave, and the product will be the content in feet, which must be reduced to fquares as taught in carpenters work.

E. 1. The length of a flated roof is 50 feet 6 inches, and its girt 32 feet 3 inches; how many fquares will it contain?

50,5 =

Length
Girt

32,25

2525

1010

1010

1515

Anfwer 1628,625

16 fquares, 28 feet.

Note. In flating it is common to reckon the breadth of the roof 2 or 3 inches broader than what it measures, because the first row is almoft covered by the fecond: this is fometimes practifed in tiling.

E. 2. How many fquares are contained in a roof, whose length is 70 feet, and depth 30 feet?

Firft 30×2=60; and 70×60—4200 feet 42 squares, the answer.

5. PLASTERERS WORK.

Plasterers work is of two kinds; viz. plastering upon laths, called cieling, and plaftering upon walls, called rendering, and is measured by the fquare yard, which is 9 fquare feet.

RULE. Divide the square feet by 9, and the quotient will be the number of square yards.

E. I.

If a cieling be 60 feet 9 inches long, and 22 feet 6 inches broad, how many yards does it contain ?

By Decimals.
60,75

22,5

30375

By Duodecimals.

[blocks in formation]
[blocks in formation]

12

6,9

Anfwer 151 yards, feet, 10 inches, 6 parts.

E. 2. There is a quantity of partitioning, that measures 260 feet about, and 18 feet high, and is rendered between quarters; the lathing and plastering of which will be 8d. per yard, and the whitening 2d. per yard; what will the whole come to ?

260
18

[merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small]

Note. In meafuring between quarters, there is commonly part of the whole area deducted; but when rendering between quarters is whitened or coloured, there is part to be added to the whole, for the fides of the quarters and braces.

E. 3. What will plaftering a cieling, at 1od. per yard come to, uppofing the length 26 feet, and the breadth 15 feet?

First 26X15=390, and 390÷943 yards, 3 feet, the content. By Multiplication.

By the rule of Three.

[blocks in formation]

d. yds. f.

[merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small]

Painters work is measured the fame as plafterers, and in taking the dimensions, the line must be forced into all the mouldings and corners. E. 1. If a room be painted, whofe height is 9 feet 6 inches, and its compass 40 feet 3 inches; how many yards does it contain?

By Decimals.
40,25
9,5

20125

By Duodecimals.

[blocks in formation]

36225

9)382,375

Answer 42,486

E. 2.

[blocks in formation]

How many fquare yards are there in a room, whofe height is

12 feet 6 inches, and the circumference 98 feet 9 inches ?

[blocks in formation]

Answer 137,152 = 137 yards, 1 foot, 4 inches, 4 parts.

7. GLAZIERS

7. GLAZIERS WORK.

Glaziers take their dimenfions in feet, inches, and parts, and eftimate their work by the fquare foot.

E. 1. If a pane of glass be 3 feet, 8 inches, and 3 quarters long, and í foot, 4 inches, 1 quarter broad; how many feet does it contain? By Duodecimals.

By Decimals.

[blocks in formation]

Note. In taking the length and breadth of a window, the cross bars between the panes are always included; and no allowance is ever made for round or oval windows, as the trouble of cutting them to those shapes, is more than the value of the glafs omitted.

Windows are fometimes measured by taking the dimenfions of one pane, and multiplying it continually by the number of panes.

E. 2. There is a window with 16 panes of glass, each 3 feet, 7 inches, 3 quarters long, and 1 foot, 5 inches, 1 quarter broad; how many feet of glass are contained in the faid window?

[merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small]

Paviours work is done by the fquare yard, and the content is found

by dividing the area in feet by 9.

2 X 2

E. I.

« ΠροηγούμενηΣυνέχεια »