Question

-tipe smple. Lstted connecter. Cornes 8ομ Pro. Simple Lolto ead Toad Gnd lollip ve foad as onnechon Cornes soku Ps HaorPlene No Stip alote are 익 A9TL steel. Note trattt negleckd snmember anel eset plate of 2 nein Cen be neglechl ngter for the Lonesho 2 o -5 1-5 A92 Stee diamete bofts

Please help me solve this problem correctly. It's a steel design question. Thank you.

Answer 1

GIVEN DATA Member Details Grade of Steel Plate dimension A 992 7 x 0.375 Loads Applied Service dead load Service live load 80 kips 10 kips Connection Details Diameter of bolt, in Designation of bolt Threads included/excluded Number of shear planes Number of bolts across a section Number of bolts in the direction of loading, A 325 4 3.5 in 1.5 in Pitch of the bolts, End distance CALCULATIONS For grade of steel A 992 Yield stress, 50 ksi Ultimate stress, 65 ksi Gross area of section Ag2.625 in 2 Diamter of bolt hole 1.125 in 1.2 D1.6L Factored design load, Tu 112 kips 1) NUMBER OF BOLTS REQUIRED Tensile strength of bolt material F 120 ksi Area of bolt, 4 0.7854 in Design strength of bolt in shear R0.75 x( 0.4 F*) mAb Design shear strength/bolt, - 28.27 kip/in sign strength of bolt in bearin Le1.5 in > 3.5 in > 1.5 in 1.5db 3 in 3db] Checks:

Design bearing strength/bolt, a. -фі2.4Fudt) 0.75 x( 2.4 x 65 x 1.000 × 0.375 ) 43.875 kip/in Thus, the design strength of bolt,«R, 28.27 kip/in [minimum of the two values Design strength of connection, 4x 28.27 113.08 kips> 112 kips Hence, SAFE