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molkswoRth’s pocket-book
Strength and Weight of I IRON Beams.
(Société John Cockerill, Belgium.)
The loads are calculated on a resistance of
10,000 lbs. = tons per square iuch. The load
being distributed and the beam supported at both
ends. Half the load must be taken if concentrated
at the centre.
Dimensions, inches. . Weight, lbs. per foot run. Load io cwt. for Spans of
Depth Flange Web. 5 feet. 10 feet. 15 feet. 20 feet. 25 feet. 30 feet.
Width. Thick- ness.
2 A 6-80 28’2 14-1 9-4 7-1 5-7 4-7
2 i 8'10 37'2 18-6 12-4 9-3 7-4 6-2
5* 2 i 8’80 49-6 24’8 16-5 12-4 9-9 8-3
3i 3'90 12-3 6-2 4-1 3-1 2-5 2-1
5 215- * 11-50 68-1 34-1 22-7 17-0 13-6 11-4
5; 2| i 11-50 71’9 36-0 24-0 18'0 14-4 12'0
6f% 3i _5_ 15-50 110'9 55-5 37-0 27-7 22-2 18-5
Vr s; 4 17’50' 134 -U 61-o 44-7 33-5 26'8 22-3
U 2-9- Jr. 15-50 120-2 60-1 40-1 32-3 24'0 20-0
84 2} _5_ 16-KO 146-0 73-0 48 7 36'5 29-2 24’3
7X 314 20'20 162-4 812 54-1 40'6 32’5 27-1
U 3 ft 4 20'90 177-0 88-5 59-0 44*2 35-4 29-5
9i 3i i 23-20 229 6 114-8 76’5 57’4 45-9 38-3
st 4i i 30-30 304’1 152-0 101-3 76-0 60-8 50-7
9i 3; t 22-20 214-5 107-3 71-5 53-6 42-9 35-8
8 5 1 26-90 246*6 123-3 82-2 61-7 49*3 11-1
9*- 34 .JL. 20-20 199’1 99'6 6.6-4 49'8 3»-8 33'2
11H 415. JL. 39 70 515-4 257’7 171-8 128 6 103-1 85 9
12| öl 60-50 820-5 410'3 273-5 205-1 164-1 13«-b
n 5H H 53-80 714-5 357-3 238-2 1 1 179-2 142-9 119-1
These beams may be rolled or | wider,
making the web thicker aud the flanges wider by
that amount.