(15%) Problem 2 (Pro 8.11 Textbook modified):

Two steel plates (A572, Fy = 50 ksi) are welded together to form an inverted T-beam. Determine

the maximum bending stress developed. Also determine the maximum shear stress at the neutral

axis of the cross-section and at the intersection where the stem joins the flange. Ignore the weight

of the steel plates.

X

N.A.

Ix = 113.2 in.4

5.93"

3.07"

-"x 8" STEEL PLATE

WELD (EA. SIPE)

CxC STEEL PLATE

A

2K

-2k

+0

B

+4k

5'

65k

5

4K

14k

lol

10⁰

-10k-ft

V=0

+10 k-ft.

Inflection point

M=0

2K

I

2

51

1²k

5'

2k

Load

-2k

'M'