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Different methods are used in different places for taking the dimensions of a house; and indeed of these there is such a variety, that scarcely any general rule can be given. A measurer, therefore, before he proceeds to measure a house, ought to inform himself as to the nature of the agreement, the customs of the place with regard to the method of taking dimenfions, and of making allowances.
It is, however, a pretty general custom to add one half the thickness to the height of the side walls, as an allowance for the extraordinary trouble of levelling, and a foot for every belt. This allowance is given at the stated rate.
A gable-end, where there are no vents, may be considered a triangle, and measured accordingly; but when there are vents, it is a trapezoid, and ought to be computed by the rule for its
Chimney stalks are measured by multiplying one-half the girt by the height.
Required the solid content of a wall whose length is 53 feet 8 inches, its height being 12 feet, and thickness 3 feet.
9 II 39 2)2012 6
Ans. 9 roods 11 yards 3 feet 9 inches. 3018 9 standard
Ex. 2. Required the content of a wall whose length is 66 feet 9 inches, its height 10 feet 3 inches, and thickness 2 feet.
Anf. 1556.718 feet. Ex. 3. In a chimney-piece, the length of each jamb is 4 feet 4 inches, breadth of both together i foot 9 inches, length of the mantle and fab each 4 feet 6 inches, breadth of both together 3 feet 2 inches—required the content.
Anf. 21 feet 10 inches.
In Scotland, brick-work is measured by the square yard-in England, by the square rod, which is 16.; long, and consequently contains 272.25 square feet; but 272 is generally se steemed sufficiently accurate.
Brick-work is of standard thickness, when the wall is the length of one brick and the breadth of another, thick. Brick walls of other thickness must be reduced to that standard by the following
Multiply the superficial content of the wall by the number of half bricks in the thickness; divide the product by 3, and the quotient is the content, reduced to standard thickness.
A brick wall is 36 feet 6 inches long, and 17 feet 3 inches high, and 51 bricks thick-required the content.
Ex. 2. A brick wall is 841 feet long, 171 feet high, and 51 bricks thick-how many rods of brick?
Anf. 19 rods 2 quarters 35 feet. Ex. 3. If each side wall of a building be 45 feet long on the outside, each end wall 15 feet broad on the inside, the height of the building 20 feet, and the gable at each end of the wall 6 feet high, the whole being two bricks thick-required the content.
Anf. i 2.1761.
PLAisterers work is of two kinds, viz. plaistering upon walls, called rendering ; and plaistering upon laths, called ceiling. Deductions are made for doors, windows, &c. All is measured by the square yard.
The length of a partition is 22 feet, and height 12,-how many yards of plaister-work are in it?
Ex. 2. If a ceiling be 591 feet long, and 24. feet broadhow many yards ?
Anf. 162.652 square yards. Ex. 3. How many yards, rendering and ceiling, in a room 28 feet long, 131 broad, and 8 high?
Anf. 117 yards 3 feet 9 inches.
CARPENTERs or joiners work is that of flooring, roofing, partitioning, &c. and is either measured by the square yard, or by the square of 100 feet.
Doors and window-shutters are reckoned work and halfwork. If the door be pannelled on both sides it is esteemed double work. For the architrave, gird it about the outmost part for its length ; measure over it as far as can be seen, when the door is open, for the breadth. In the measuring of roofing, for workmanship alone, sky-lights and holes for chimney-shafts are deducted; but when for workmanship and materials together, no deduction is made.
Stairs may be me fured in the following manner :- Take the breadth of all the steps, and make a line ply over them from top to boitom; multiply the length of this line by the length of a step for the area.
If a floor is 501 feet long and 28 feet broad-how many squares ?
Anf. 14.squares 14 feet.
Ex. 2. If a house within walls be 44 feet 6 inches long, and 18 feet 3 inchies broad, how many squares of roofing will cover it?
Anf. 12 squares 18 feet. It is customary to consider the roof as a flat, and half a flat taken within walls.
TILERS AND SLATERS WORK.
The content of a tiled a f is found by multiplying the length by the girt from to eave ; and that of a flate roof by multiplying the late by the girt plied over the caves, to meet the wall sor eare coards.