Question

The lower gusset plate (Plate 2), a pure tension ASTM A572 Gr. 50 member, is 1" thick and 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 , in kg for the gross section yielding limit state at section y

b) Determine Plate 2's design strength, , in kg for the net section rupture/fracture limit at section r

c) Determine Plate 2's design strength, , in kg for the block shear limit state for the block shown

d) Which limit state governs and what is the design strength in kg of Plate 2?

Image transcriptions

VERTICAL BRACE (1-3/4 0 ROD, ASTM F1554 GR.55) 500 s block STEEL COLUMN, SC-01 section4 ( 49 17 mm . ) 50- 1-12&quot;0 ASTM A-325 BOLTS PL 1&quot;X1200X200 TOTAL=4 50 (435 mm.) 38,17 -i section 548.8 MINIMUM 206 1200 W.P. ro LOWER GUSSET PLATE, PL 1&quot; NOTA: FOR CASES IN WHICH 1-12 0 ASTM THERE IS INTERFERENCE A-325 BOLTS VERTICAL BRACE (1-3/4 0) BETWEEN THE GUSSET PLATE TOTAL=4 ROD, ASTM F1554 GR.55) AND BASE PLATE STIFFENERS LOWER GUSSET - PLATE, PL 1&quot; 172.5 USE THE GUSSET PLATE MINIMUM plate 2 L PL 1&quot;X1200X200 -75 + 150- 150- 150-75 100 - 500 SECTION W-W SCALE 1:10 [mm] CONNECTION TO BASE PLATE SCALE 1:10 12&quot;0VERTICAL BRACE CONNECTIONS [mm]