The lower gusset plate (Plate 2), an ASTM A572 Gr. 50 is 3/8" thick, connects the vertical brace and Plate 1 to the column and base plate. Use LRFD method and kg
a) Determine Plate 2's design strength, , for the gross section yielding limit state at section y
b) Determine Plate 2's design strength, , for the net section rupture/fracture limit at section r
c) Determine Plate 2's design strength, , for the block shear limit state for the block shown
d) Which limit state governs and what is the design strength of Plate 2?
Image transcriptions
VERTICAL BRACE (?'O ROD, ASTM F1554 GR.55) sectiony ( 39 4 mm . ) W 300 STEEL COLUMN, SC-01 50 - PL /:"X700X200 - 1-12 0 ASTM A-325 BOLTS TOTAL=2 So 7 block 38.1- (404 mm ) - section r 50 504.3 200 MINIMUM 700 1-12 0 ASTM W.P w. A-325 BOLTS LOWER GUSSET PLATE, PL % VERTICAL BRACE (0 ROD, TOTAL=2 ASTM F1554 GR.55 NOTA: FOR CASES IN WHICH LOWER GUSSET THERE IS INTERFERENCE PLATE, PL 3/8 BETWEEN THE GUSSET PLATE 172.5 AND BASE PLATE STIFFENERS L PL 3/8*X700X200 MINIMUM USE THE GUSSET PLATE 757 150-75 100 300 SECTION W-W SCALE 1:10 [mm] CONNECTION TO BASE PLATE 8"O VERTICAL BRACE CONNECTIONS SCALE 1:10 [mm]
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