Question

Use the following figure for problems 33 - 35. 10 in 6 kips 100 in 10 in 12 kips 500 kips Problem 33 Determine the maximum normal tensile stress in the member. a) 15.8 ksi b) 10.8 ksi c) 8.6 ksi d) 5.8 ksi e) 1.4 ksi Problem 34 Where is the location of the maximum normal compressive stress on the cross section? a) b) d) e) None of the locations on this row Problem 35 Where is the location of the maximum normal compressive stress on the cross section? b) d) None of the locations on this row

Answer 1

problem -33 :- Tensile stress More 6 kips lood nue to from Bending equation 6 kips lo in 시 Eman Elt I ya M - Man. man. Bending moment I = moment of inertia Beam will Hogg. so Tension on top. compression on bottom Gman Y man Sheys at distance of y. from Neutral anis loin a = loin z lon INA Fold 4 a 12 Cio] 12 in Menas Iman = 10 10 = 5 in 2 M = 6 * 100 600 kips - in Eland 고 man Inan 600 man 5 (10) 12 Eman = 3.6 ksi (rensile

Due to 12 kips load man Tensile stress from Bending equation. onan mam 12 * 100 = 1200 kips-in I = 104 ing Iman = do 5 in 1200 Emas it ceny Eman = 7.2 ksi (Tensile Total total tensile stress in the member Add both Tensile stresses oman: 3.6+7 2. Eman 10.8 ksi correct Option (6) is

cross kle's The total will come at problem - 34 (i) Due to compressive load of 500 Kips. cross section will feel compressive stress on every point hogging develope ..) (ii) Due to 6 kips load The beam is in So compressive, s stresses will Centroidal axis maximcim extreme fibre of below 6 kipsa À А. compression pension T compression

Tension 1. Compression (in comp) below NA Maximum at extreme fibre The Right sight Side beam will Due to 12 kips. load. bend towards Right Sigh So compression, will develope in right porttons of beam max - compression develope at extreme Right portion of beam cls. 1 12 Kips 3. This postion will feel maximum Compression 12 KİDS are By Adding These 3 compreggive Stresses The location of maximum compressive section is Stress CROSS i maximum compressive Strey point

for problem - 34 NO option is matched SO option le) None of the locations now is Ansioen on this problem - 35 & So problem – 34 Already explained in correct location is is correct ... Option (b)