Side
af
764
Forrige
Næste
46 moleswokth’s pocket-book
Rule for the Weight of Pipes,
D = Outside diameter of pipe in inches.
d = Inside diameter.
w — Weight of a lineal foot of pipe in lbs
u- = k (D2 - d2). '
k =s 2 • 45 for cast iron.
= 2’64 for wrought iron.
= 2’82 for brass.
= 3 • 03 for copper.
= 3'86 for lead.
Weight of Cast-iron Pipes
lu lbs. per lineal foot. The weight of the two
flanges may be reckoned = weight of one foot.
Bore. Inches. Thickness of Metal.
i 8 ♦ 1 8 * 1 t 1 1 H 1
2 8-7 12-3 16-1 —
3 12-4 17-1 22-2 .—■ .— ■
4 16-1 22’1 28’3 .— —
5 19-8 26-9 34-4 42’3 — J
6 23’4 31-9 40-6 49-7. —
7 27-1 36-8 46-7 56-8 —
8 30-8 41-6 52’8 64-31 — —
9 34’4 46-0 58-9 — -
10 —• 51-4 65-1 79 93-3 —
11 —— 56-4 71 86'4 101-8 -» —
12 —— •—. 77-3 93-7 110-4 127-4 .
14 — • • 89-6 108-4 127-5 147
15 —— 115-7 136-1 156-8 177-7 -
16 —— •—-- •— 123-1 144-7 166-6 188 -1 ——
18 — —- —- 137-9 361-8 186-2 210-8
20 — — —— — 178-9 205-S 232-9 260'3
22 —• —• — — I —. 225-4 254'9 284-8
24 - 245'0 276'9 309-3