TABLE 62. 



PROPERTIES OF Two CHANNELS AND A BUILT I-BEAM. 

 FLANGES TURNED OUT. 



Properties of 

 Two Channels 



and 

 a Built I -Beam. 



A - 



B 



Channel Flanges Out. 

 Distance Back to Back 



of Channels Equals 

 Width of Web Plate Plus J". 



Series I and 2. 



Series i. 



Series 2. 



Channel. 



Axis A-A. Axis B-B. 



, 

 II 



II 

 1 



~ 



o c 

 o 



3 '5 



Axis A-A. 



S'S 



C aj 



go 



Axis B-B. 



In. 



12 

 12 

 12 



12 

 12 

 12 



IS 



IS 



is 

 15 



IS 



15 



Lh. 



25 



30 



2Oj 



25 



30 



33 

 35 

 40 



33 

 35 

 40 



In. 



In. 



In.* 



In. 



In. 



In. 



In.2 



In.* 



In. 



In.* 



8x1 



8x| 



32*35*i 



21. 18 



23.82 

 26.76 



24.98 



27.62 



30.56 



32.72 

 33-50 

 36.44 



34-99 

 35-77 

 38-71 



269 

 301 

 337 

 282 

 3H 

 349 



651 

 666 

 721 



663 

 677 

 733 



3-57 

 3-S6 

 3-55 



3-36 

 3-37 

 3-37 

 4.46 

 4.46 

 4-45 



4-35 

 4-35 

 4-35 



4O2 

 464 

 536 



436 

 49 8 



571 



652 

 672 



747 



982 

 1010 

 1117 



4-35 

 441 

 4.48 



4.18 



4-25 



4-33 

 4.46 

 4.48 

 4-53 



S-30 

 5-32 

 5-37 



ioxf 



loxf 



ioxf 



I2X 



22.93 



25-57 

 28.51 



25-73 

 28.37 



31-31 



33-47 

 34-25 

 37-19 



35-74 

 36-52 

 39-46 



270 

 302 

 337 

 282 



349 



651 

 666 

 721 



663 

 677 

 733 



3-44 

 3-44 

 3-44 



3-31 

 3-32 

 3-33 



4.41 

 4.41 

 4.41 



4-3i 

 4-3i 

 4-3i 



610 

 700 

 804 



657 

 747 

 851 

 961 

 989 

 1096 



mo 

 1138 

 1245 



In. 



5-23 

 5-3i 



S-OS 

 S-I3 

 5-21 



S-36 

 5-38 

 5-43 



S-57 

 5.58 

 5.62 



The above table is intended to serve only as a guide in the choice of sections and not as a com- 

 plete table. The properties of sections not given in table may be obtained as follows: 



Example: Determine the properties of a section composed of 2 channels 15" X 55 lb., I plate 

 12" X 3" and 4 angles 4" X 4" X J" ', I2|" back to back. 



Solution: 



118 



