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8 6 depth.
4 thick.
5
10
2 10 0
9
4 23 2
2 16 solidity of a binding-joist.
8
8 412 6
17 feet, solidity of all the binding-joists.2 64
13 2 4 solidity of both rafters
1
5
10 0 area of the end of a ceiling-joist.6
5
11 6
5 inches, solidity of a ceiling-joist.
24 number of ceiling-joists.
10 feet, solidity of the ceiling-joists.
17
45
72 feet, sum of all the solidities in the whole floor.
Problem III.— To measure roofing, or partitions, eitherfor materials or workmanship.
All timbers in a roof, or partition, are measured in thesame manner as floors, excepting king-posts and queen-posts,&c. when there is a necessity for cutting out parallel piecesof wood from their sides, in order that the ends of suchbraces as come against them may have, what is called byworkmen, a square hutment. To measure the workmanshipof such pieces, or posts, take their breadth and depth, at thewidest part, multiply them by the length, and the productwill give the solidity for workmanship. To find the quan-tity of materials, if the pieces sawn out are 2^ inches thick,or more, they are esteemed pieces of timber fit for use;when more than two feet long, their lengths should not beesteemed so long by 5 or 6 inches, because the saw cannotenter the wood with much less waste, and consequently thepieces must be deducted from the whole solidity, and theremainder will give the quantity of materials ; but ifthe pieces cut out be less than 2\ inches, the whole postmust be measured as solid for the materials, because piecesout out are of little use.
Example .—Let the tie-beam be 36 feet long, 9 incheswide, by 1 foot 2 inches deep; the king-post, is 11 feet6 inches high, 1 foot broad at the bottom, by 5 inches thick :out of this are sawn two pieces from the sides, 3 inchesthick and 7 feet long; the braces, are 7 feet 6 inches long,5 inches by 5 inches ; the rafters are 19 feet long, 10 inchesby 5 inches each ; the struts are 3 feet 6 inches long, and4 inches by 5 inches ; required the measurement for work-manship, and also for materials.
1 29
10 63
31 6 solidity of the tie-beam.
55
2 1
15 lengths of the two braces added together.2 7 3
4 9 6 solidity of the king-post, as if solid.
3
5
1 3
7
8 9 solidity of the two pieces cut from the sid® 8.
4
5
1 87
11 8 solidity of the struts.
Consequently,
31 6 0 tie-beam.
2 7 3 braces.
18 2 4 rafters.
4 9 6 king-post.
11 8 solidity of the struts.
53 0 9 solidity of the roof f° r8 9 manship.
if oi*
52 4 0 solidity for materials.
Valuation of Carpenters’ and Joiners’ "WoR*Memoranda.
50 cubic feet of timber equal one load.
100 feet superficial, equal one square.
120 deals are called one hundred. ioft.
A reduced deal is 1£ in. thick, 11 inches wide, and I-'
120 12 feet 3 inch deals, equal 5f loads of timber. ] oa d400 feet superficial of 14 in. plank or deals, equal o ■ , c li
Jot#
Planks are 11 inches wide, deals 9 inches; and battens 1
T {12 ^
A square of flooring requires— Number o
Laid rough .
Ditto edges shot .
Wrought and laid folding ...
— straight joint .
— — and ploughed and tongued
Number of 1*
One square of wrought folding floors requiresDitto straight joint .
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