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. 2933313 CEE 372: Strength of Materials Assignment No. 8 (Answer all questions. Please provide all steps and neat
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E CEE 372: Strength of Materieis
Assignment No. @
{Ahswei‘ eii geestionsi Hesse provide aii steps amt heat sketehes whehevei‘
appsepsiate} Question 1:
Find the maximum. normal and shear stresses for which the beam shown. below should be designed for? Question 2:
The cross—section section shown below is to carry a shear force of 200k and a bending moment of
SOOkuft, respectively. Compute the following: (1) Max. tensile and compressive stresses on the beam and where they occur? (2) Max. shear stress and where it occurs? are”; H .
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H Question 3 .
The build—up I beam was designed to can‘y a shear force and a bending moment of 200k and. 500k~ft The top ﬂange was nailed and the bottom ﬂange was glued.
(I) What should be the minimum shear strength of the giue?
(2) The naiis were used at a spacing of 12” and their shear capacity is 100k. What is the factor of safety against failure of the nails? NM Question 4  Circle the correct answer The bar below was applied with two equal loads P 3 30k as shown. Point C is located at 8’ from left and
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(I) Assuming N0 SELF WEIGHT
(1) The max. Shear Force this beam should be designed for is: (30 i I)k TRUE FALSE
(2) The max. Shear Stress occurs at the at center of the beam TRUE FALSE
(3) The max. BM this beam should he designed for is: (120 j: 2)k~i’t TRUE FALSE
(4) The max. Bending Moment occurs at C TRUE FALSE
(5) Section Modulus required to support the beam is: (60 :i: 2)in3 TRUE FALSE (II) It was decided to use an I beam W12x50 as shown in figure.
Case 1: Assuming SELF WEIGHT (1) The max. Shear Force this beam should be designed for is: (36 i1)k TRUE FALSE
(2) The max. Shear Stress occurs at the at center of the beam TRUE FALSE
(3) The max. BM this beam should be designed for is: (123 :i: 2)k~ft TRUE FALSE
(4) The max. Bending Moment occurs at C TRUE FALSE
(5) Section Modulus required to support the beam is: (60 i 2)in3 TRUE FALSE
(6) This beam is safe  TRUE FALSE
(7) The maximum normal Eehsiie stress in this beam is: (22 i 2)ksi TRUE FALSE
(8) The maximum normai compressive stress in this beam is: (22 i 2)ksi TRUE FALSE (HI) It was decided to use an I beam W1 2X50 as shown in ﬁgure.
Case 2: Assuming SELF WEIGHT (1) The max. Shear Force this beam should be designed for is: (30 i l)k TRUE FALSE
(2) The max. Shear Stress occurs at the at center of the beam TRUE FALSE
(3) The max. BM this beam should be designed for is: (123 i 2)k—ft TRUE FALSE
(4) The max. Bending Moment occurs at C _ TRUE FALSE
(5) Section Modulus required to support the beam is: (40 i: 2)in3 TRUE FALSE
(6) This beam is safe TRUE FALSE
(7) The maximum normal tensile stress in this beam is: (100 i 2)ksi TRUE FALSE (8) The maximum normai compressive stress in this beam is: (100 i 2)ksi TRUE FALSE «53 3‘. :i.
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Amwkmhmﬁmnhwmdmywm Questior. § @0 paints) ’
Find the maximum shear and normal stress for which the beam shown be§ow shQuEd be designad for? L3» _ Mj/gaiéﬂ . w... MmﬁWhstwm 'WWWW""m""“"""""" W “W"unwwnn‘m...‘”WWW W gagiﬁflyu—Mmmm m
WWW Question 4 — Circle the correct answer The bar beiow was applied with two equal loads P= 30k as shown. Point (3 is located at 8’ from left and.
Um — 243(5E and Tan— w Itiksi ? a. g 9 it... _? Cassi» (1) Assuming seem WEiGH'i“ (1} The max. Shear Force this beamshould he designed for is: (30 :l: 1)]; @D FALSE
(2) The max. Shear Stress occurs at the titcenter of the beam TEETE @ﬁ
{3) The max. BM. this beamshould be designed for is: (120 :t 2)}Cfi (II/RUE“; FALSE
(4) The max. Bending Moment. occursat C {gig} FALSE
(5) Section Modulus required to support the beam is: (66 i 2)'in3 £13139 FALSE (iii) it was decided to rise as i heath WiZXS‘S as shown in ﬁgure.
Case I: Assuming SELF WEIGHT (1) riI‘he' mas. Shear Force this beam should he designed foris: (30 i 1)]; FALSE
(2) The max. Shear18tres's occurs at'the at center of the beam EALSE 3'
(3) The max. BM this beam should he designed for is: (123 i 2)ls:~ft FALSE
(4) T he max. Bending Moment occurs at C FALSE:59
(5) Section Modulus required to support the beam is: I (60 i It)“:3 EXISE
(6) This beam is safe FALSE
(7) The maximum norma} tensile stress in this beam is: (22 :l: 2)l{si FALSE
{8) The maximum normai compressive stress in this beam is: (22 :l: 2}itsi FALSE (IE) it was tiecitied to use an. i beam WiZsSii as show: in figure. Case 2: Assuming secs WEIGHT .
(1) The max. Shear Force this beam should be designed for is: {30 1 13k F532???
(2) The max. Shear Stress occurs at theat center of the beam EALSi?
{3) The max. BM this beam should he ﬁesigned for is:  (123 i 2)it~i't _ _ _ FAESE
(4) The max. Bending Moment occurs at C _ TRUE ﬁg)
(5) Section Modulus required to support the beam is: (49 :3: 2)iri3 TRUE (EELS?
(6} This beam is safe TRUE @29
{7) The maximum normal tensile stress in this beam is: (100 i 2)i<si TRUE @@ (8) The maximom normal compressive stress in this beam is: (100 i 2)ltsi TRUE FALSE ...
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 Spring '08
 SIDDHARTHAN

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