5. The height of a room, taking in the cornice and mouldings, is 12 feet 6 inches, and the whole compass 83 feet 8 inches; the three window-shutters are each 7 feet 8 inches by 3 feet 6 inches, and the door 7 feet by 3 feet 6 inches; the door and shutter, being worked on both sides, are reckoned work and a half. Required the estimate, at 6s. per square Ans. £36 12s. 21d.

yard.

OF BRICKLAYERS' WORK.

WHEN gutters are allowed double measure, the usual mode is, to measure the length along the ridge tile, and add it to the contents of the roof: this makes an allowance of one foot in breadth along the hips or valleys. Double measure is usually allowed for the eaves, so much as the projector is over the plate, which is generally 18 or 20 inches.

1. A roof is covered with tiles, whose depth on both sides (with the usual allowance at the eaves) is 30 feet 6 inches, and the length 42 feet; how many squares of tiling are contained therein?

2. There is a roof covered with tiles, whose depth on both sides (with the usual allowance at the eaves) is 40 feet 9 inches, and the length 47 feet 6 inches; required the number of squares contained therein. Ans. 19 sq. 35 ft.

3. What will the slating of a house cost at £1 5s. 6d. per square; the length being 43 feet 10 inches, and the breadth 27 feet 5 inches, on the flat; the eaves projecting 16 inches on each side-true pitch? Ans. £24 9s. 51d. 4. What is the content of a slated roof, the length being 45 feet 9 inches, and the whole girt 34 feet 3 inches? Ans. 174-104 yds.

OF WALLING.

Brickwork is estimated at the rate of a brick and a half thick; so that if a wall be more or less than the standard thickness, it must be reduced to it.

1. If a wall be 72 feet 6 inches long, and 19 feet 3 inches high, and 2 bricks and a half thick, how many rods of brickwork are contained therein, when reduced to the standard?

No. of feet 721 · 191=14577=11165=1395-625.

8

No. of stand. rods =

1395.625 5
272.25

3=8.535 rods.

2. How many rods of standard brickwork are in a wall whose length is 57 feet 3 inches, and height 24 feet 6 inches; the wall being 24 bricks thick? Ans. 8.5866 rods.

3. The end wall of a house is 28 feet 10 inches long, and 55 feet 8 inches high to the eaves; 20 feet high is 2 bricks thick, another 20 feet high is 2 bricks thick, and the remaining 15 feet 8 inches is 1 bricks thick, above which is a triangular gable one brick thick, which rises 42 courses of brick, of which every 4 courses make a foot. What is the whole content in standard measure? Ans. 253 62 yards.

MASONS' WORK.

WALLS, columns, blocks of stone or marble, &c., are measured by the solid foot, and pavements, slabs, chimney-pieces, &c., by the square foot.

In estimating for the workmanship, square measure is generally used, but for the materials, solid measure.

1. If a wall be 82 feet 6 inches long, 20 feet 3 inches high, and 2 feet 3 inches thick; how many solid feet are contained in that wall?

Solid content = 821201.21

=165, 81.2=120285 = 375832 feet.

2. If a wall be 120 feet 4 inches long, and 30 feet 8 inches high; how many superficial feet are contained therein ? Ans. 3690 feet.

3. If a wall be 112 feet 3 inches long, and 16 feet 6 inches high; how many superficial rods of 63 square feet are contained therein ? Ans. 29 rods 25 feet. 4. What is the value of a marble slab at 8s. per foot, the length being 5 feet 7 inches, and breadth 1 foot 10 inches? Ans. £4 1s. 101d.

PLASTERERS' WORK.

PLASTERERS' Work is of two kinds, viz., ceiling, which is plastering upon laths; and rendering, which is plastering upon walls.

The content is sometimes estimated by the foot, sometimes by the yard, and sometimes by the square of 100 feet. Enriched mouldings are calculated by the running foot or yard.

Deductions are made for chimneys, doors, windows, &c. In arches, the girt round them is multiplied by the length for the superficial content.

1. If a ceiling be 40 feet 3 inches long, and 16 feet 9 inches broad, how many square yards are contained therein? Area=404 · 163 feet=161 · 67=674 feet-74131 yards.

2. The length of a room is 14 feet 5 inches, breadth 13 feet 2 inches, and height 9 feet 8 inches, the cornice* projects 5 inches from the wall, on the upper part next the ceiling and down the side; required the quantity of rendering and plastering, there being no deduction but for one door, which is 7 feet by 4.

8

Ans. 54 yds. of rendering, 211 yds. of ceiling.

* The terms used by plasterers are lath plaster, render and float; and all except the last coat is applied flush, and no allowance is made for cornices except they be of very large dimensions.

3. The circular vaulted roof of a church measures 105 feet 6 inches in the arch, and 275 feet 5 inches in length; what will the plastering come to at ls. per yard?

Ans. £161 8s. 5ad.

4. The length of a room is 18 feet 6 inches, the breadth 12 feet 3 inches, and height 10 feet 6 inches; to how much amount the ceiling and rendering, the former at 8d. and the latter at 3d. per yard; allowing for the door of 7 feet by 3 feet 8, and a fireplace of 5 feet square?

Ans. £1 13s. 3d.

PLUMBERS' WORK.

PLUMBERS' work is rated by the pound, or by the hundredweight of 112 lbs. Sheet lead, used in roofing, guttering, &c. weighs from 6 to 12 pounds per square foot, according to the thickness; and leaden pipes vary in weight per yard, according to the diameters of the bore.

The following table shows the weight of a square foot of sheet lead, according to its thickness; and the common weight of a yard of leaden pipe, according to the diameter of its bore.

1. A piece of sheet lead measures 20 feet 6 inches in length, and 7 feet 6 inches in breadth; what is its weight at 8 lbs. to the square foot?

2. What weight of lead of an inch thick will cover a flat, 15 feet 6 inches long, and 10 feet 3 inches broad, the lead weighing 6 lbs. to the square foot?

Ans. 8 cwt. 2 qrs. 14 lb.

3. What will be the expense of covering and guttering a roof with lead, at 18s. per cwt., the length of the roof being 43 feet, and the girt over it 32 feet; the guttering being 57 feet in length, and 2 feet in breadth, allowing a square foot of lead to weigh 83 lbs. ? Ans. £104 15s. 3 d.

4. What will be the expense of 130 yards of leaden pipe of an inch and half bore, at 4d. per lb., admitting each yard to weigh 18 lbs.?

Ans. £39.

PAINTERS' WORK.

measuring line is

PAINTERS' work is computed in square yards. Every part is measured where the colour lies, and the forced into all the mouldings and corners. is allowed for carved mouldings, &c.

Double measure

Sash-frames at a

Windows are done at so much a-piece. certain price per dozen; sky-lights, window-bars, casements, &c., are charged at a certain price per piece.

1. If a room be painted, whose height (being girt over the moulding) is 16 feet 4 inches, and the compass of the room 120 feet 9 inches; how many yards of painting in it?

Ans. 219 yds.

2. The length of a room is 20 feet, its breadth 14 feet 6 inches, and height 10 feet 4 inches; how many yards of painting in it, deducting a fireplace of 4 feet by 4 feet 4