Question

The following problems are from the course's textbook: Mechanics of Materials, 7th Ed. Ferdinand P. Beer, E. Russell Johnston, Jr., John T. Dewolf, and David F. Mazurek McGraw-Hill, 2014): 1 Problem 6.1 2. Problem 6.18

Answer 1

beam boads au nailed together to form at theallousable sheag a kl Three full Aize SoX loo- -mm that subjeckd to a Vextol shear g IS00N. lougest Joyihial spacig s the n be raju hair Useol betwesn each Somm Somm 5omm oomm A 1(l0 ) (15)= 28125 Xmm* b 2 4 T Sod 12 Scmm 28 125 Xlom X- A= (lo0)(Se) Soomm. So mm 250 X lo3 mm = 250Xm3 A ululoo

-6 (I500)(250Xlo I 28.125Xlo :13:33 Xl63 시m. 9.5= Froi 2X400 W오이X 0.09. 13-33 Xlo3 S 60 mm

Shouon, delermiue the minimum iqun- a6 18 tos t beam and tmber used, Gau= 12Hla 4 sidth b l= 825 ka. 2A 4.8N 2.4KA DV Somm A Im Im, Im 0 Sm RA RE KA X3 2.4x2 -4-8X1 +-2X0 S0 RA = 2 KN 2.4+4.8 +7.2 RAt RE RA+RE =4.4 RE= 4.Y-2 RE = 12.4 KN 4-2 Mimas = 72KN- 12 x 103N E 0-L 36PN-m 3-6xN-m -S2 M SFD Mmoz Smm OEN-M 6kN-M 3-6X3 /2Xlo6 C 300X lo3 mm3 BMD -3.6kN-m

for Yechypudar on S= b 65 6X 300% 103 2 h2 shea! Noshenv Areu eceu ai Hu nutal ands bedi uctaquln ertion A bh a A-h - 4 2 v(b) 12 3XF.2x3 2 X 15oxlo3x825X - 2h7 O3X/0-3m 0.3 mm b= 873mm 6 is tho loger ThYequined value