A course in structural drafting; . 25. LOOP BARS. Loop bars Fig. 26 are usually madeof iron and the finished length, withoutadjustment will be given from back toback of eyes. Weights of Nuts, Bolt Heads and Round Bars in pounds Dia. of Bolt X4 3 8 1 2 1 1 I 1 14^ n If 2 2^ 3 Weieht ofHex. Nutand Head .017 .067 .128 .267 .43 .73 Weight ofSq. Nutand Head .021 .079 .164 .320 .55 .88 Weight ofHex. Nut& Sa. Head .019 .031 .144 .321 .542 .75 Weight ofRound arper foot .167 .375 .367
A course in structural drafting; . 25. LOOP BARS. Loop bars Fig. 26 are usually madeof iron and the finished length, withoutadjustment will be given from back toback of eyes. Weights of Nuts, Bolt Heads and Round Bars in pounds Dia. of Bolt X4 3 8 1 2 1 1 I 1 14^ n If 2 2^ 3 Weieht ofHex. Nutand Head .017 .067 .128 .267 .43 .73 Weight ofSq. Nutand Head .021 .079 .164 .320 .55 .88 Weight ofHex. Nut& Sa. Head .019 .031 .144 .321 .542 .75 Weight ofRound arper foot .167 .375 .367 (12 2 — 12 1-6 ft.) we get lbs. Adding to this as the weight of asquare nut and head would make 33-79lbs. as the total weight and accordingto the above table the thread would be3 long (3 X diameter). If the rod wasthreaded on both ends it would weighpractically the same. Iron bars are generally made by thetop piling process, loop piling beingused in special cases. EYE BARS. Fig. 25 HEAD 1 Widthof Additional Bar of Bar Diam. Material for Head Inches Inches Inches Inches 2 , 4J I4 0- 1\ oh n 1- 0^ ^ 4 H ^ 0- 9i H 31 1- U 8 1 I 3 1- 3 8 4 1- 6 4 a n 4i 1- 8 10^ ^ 1-10 5 4 in 5 1- 9 1 \2h 6 2- 1 6 a4 13i 5i 1-11 1 14^ 6^ 2- 2 7 7 16 H 2- 3 15 T6 17 7| 2- 8 8 1 17 6i 2- 3 lye 18 7^ 2- 6 H 18^ 8 2-10 9 n 19.^ 7f 2- 6 21^ 9f 3- 1 10 If 22 9 2-11 23 10 3- 3 Bolts, Eye bars and Pins 23 TURNBUCKLES.
Size: 1979px × 1262px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1900, bookdecade1900, bookidcourseinstructur00brow
