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Having found the Dimenfions of the feveral Parts, and added them together, we are next to compute the Quantity of the Vacancies to be deducted: In doing which, it will be beft to put those Quantities firft which have the smallest Divifions, as this will fave the Trouble of making Multiplicands for thofe fmaller Divifions; removing the Work after the firft Multiplication, in order to make a Multiplicand for the Inches.

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Dimensions of the Vacancy in the first Floor are 4 Feet, 9 Inches wide, 4 Feet high and 1 Foot 10 Inches and a Half

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deep: After I have multiplied 1 F. to I, 6 P. by 4, the Product, 7 Feet and 6 Inches, I put below, to have Room to place the new Multiplicands over it, as in the Work; and the like of the other two Vacancies.

Having found the Quantity of the Vacancies to be 69 Feet, 4 Inches, 6 Parts, fubtract it from the Quantity before found, then multiply the Remainder by 8, and divide by 9, to reduce it to the Standard Thickness of a Brick and a Half; and, laftly, divide it by 272 to bring it into Rods.

Dimensions of the Chimney
Vacancies to be deducted

F. I. P.

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Joyners' Work is done by the Yard: But the Dimensions are taken with a String, because the Cornice, Mouldings, and fwelling Pannels cannot be measured by a ftraight Inftrument; but a String may be thruft into the Hollows, and bent over the Swelling; all which require to be measured, in regard of Trouble in working them: By this Means, the Work measures confiderably more in Height than the real Height of the Room. But, in Regard to meafuring about the Room for the Length, it is done in the fame Manner as in meafuring the Floor: When the Dimenfions are multiplied, divide by 9, to bring it into fquare Yards.

Exam. 1. A Room of Wainscoting, measured as above, is 12 Feet, 9 Inches high, and 96 Feet, 3 Inches in Compass: How many Yards of Wainscoting are contained in it?

F. I. P.

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136 3

Answer 136 Yards, 3 square Feet.

In measuring Joyners' Work that is wrought on both Sides, as Doors, Window Shutters, and fuch-like, it is customary to allow for Work and Half: Therefore, in thefe Cafes, after the Dimenfions are multiplied, take Half the Product, and add it to the Whole; then divide that Sum by 9, to bring it into fquare Yards.

Exam. 2. The Window-Shutters of a Room (or of several Rooms, if of equal Height) in Breadth 72 Feet, 6 Inches, in Height 4 Feet, 9 Inches; how many Yards are contain❜d in them, allowing for Work and Half?

F. I. P.

606 See Art. 51.

72 6

4 9

54 4 6

2 288

72.5

4.75

3625

5075

2900

344.375

Half 172.1875

344 4 6

Half 172
2 3

9)516 6 9

57 3

9) 516.5625

57.3

Anfwer 57 Yards, 3 fquare Feet,

In measuring Wainscot, you must deduct Doors, Windows, &c. measuring the Window-Boards, Soffits, and Cheeks by themselves.

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Of PLAISTERERS' Work.

All Plaifterers' Work is measured by the Yard, as the Joyners' is.

Exam. 1. A Ceiling 35 Feet long, 20 Feet, 6 Inches wide; how many fquare Yards are contain'd in it?

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Exam. 2. The Height of the Walls of feveral Rooms is 9 Feet, 6 Inches, the Compafs of the Rooms 246 Feet, 9 Inches: How many Yards of Plaistering are contained in them?

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In measuring Walls, Deductions must be made for Doors and Windows: Alfo, in rendering between Quarters, you may deduct one fifth Part for the Quarters, Braces, &c. but, in Whiteing and Colouring, one fourth or fifth Part must be added, where the Quarters and Braces project beyond the Wall,

Of

Of PAINTERS' Work.

The Painters' Work is measured in the fame Manner as Joyners' Work, by a String, because the Brush goes into the Hollows and over the Swellings: When the Dimensions are multiplied, divide by 9, the fquare Feet in a Yard. Windows, Bars, Cafements, &c. are not measured, but done by the Piece. It will not be neceffary to give Examples, as the Work is in all Respects the fame as in Joyners' and Plaifterers' Work.

Of GLAZIERS' Work.

Glaziers' Work is meafur'd by the Foot; and they usually measure to a great Degree of Exactness: Therefore, in setting down their Dimensions for multiplying them in Feet and Inches, the Inch is divided into twelve Parts, as the Foot is; fo that a Quarter of an Inch is three Parts, Half an Inch fix Parts, &c.

Exam. 1. A Light of Glafs being 4 Feet and 2 Inches long, and one Foot and 7 Inches broad, how many Feet of Glafs are contained in it?

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Exam, 2. If 10 Lights be, each 3 Feet and 6 I Foot and 4 Inches broad, how many Feet contained in them?

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Answer 6 Feet, 10 Inches.

Inches long, of Glafs are

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