Question

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A. Compute THE Ner Arzen Of Eder of THE GIVEN MEMBERS (ALL Hoves ARE STANDARD Size do +18") to 7/8" & BOLTS 1 ANGLE SECTION %" & BOLTS, TYP. 24*4x'16 PE 3/4x10" 1.2. PLATE SECTION (3½" Bouts, TYP. 13 g U 3/4"& BOLTS, TYP, W8x18 W- Section 3/4"0 BUILT-UP SECTION _3/4"BOLTS -Plzx8 - WT7x24 NA

Answer 1

ANGLES GIVEN DATA Connection Details Member designation Thickness of member, Member connected to one/two legs Diameter of bolt, 4 : L 4 x 4x 1 / t = 0.25 in : both legs d) = 7 in Number of bolts across a section, Number of bolts in line m = 3 CALCULATIONS Diamter of bolt hole, d= 7 + 1 = 1 in Unfold the angle into a plate. Then the net width = 4 + 4 - = 7.75 in 1 / 4 Gross area, Ag = 7.75 x 0.25 = 1.94 in? Net area, A = = = A,-n(d,t) 1.94 - 2 x 1.44 in? 1.0 x 0.25 PLATES GIVEN DATA Connection Details Plate dimension 3* 10 Diameter of bolt, do= 3 in Number of bolts across a section, Number of bolts in line n = m = 2 3 (in the direction of loading) CALCULATIONS Gross area of section, Thickness of member, Diamter of bolt hole, A = t = do = 7.5 in 0.75 in 3 + 1 = 0.875 in Net area, A, - Ag-n(dt) = 7.5 - 2 x = 6.188 in? 0.875 X 0.75

I-SECTION GIVEN DATA Connection Details Member designation Gross area of section, Thickness of flange Thickness of web, : An= tf = tw = W 8x18 5.26 in 0.33 in 0.23 in Member connected to web/two flanges : Diameter of bolt, do = two flanges + web 3 in 4 4 + 1 Number of bolts across a section, n = CALCULATIONS Diamter of bolt hole, dn = 3 + 1 48 0.875 in = Net area, A = A,-n(d,t) = 5.26 - 4 x 0.875 x 0.330 - 1 x 0.875 x 0.230 = 3.90 in? WT-SECTION GIVEN DATA Connection Details Member designation Gross area of section, Thickness of flange, : Ag- t = WT 7x24 7.07 in 0.595 in Member connected to web/flange Diameter of bolt, : do= flange 3 in 4 2 Number of bolts across a section, n = CALCULATIONS Diamter of bolt hole, do= 3 + 1 = 0.875 in Net area, A, - Ag-n(d,t) = 7.07 - 2 x 0.875 x 0.595 = 6.03 in