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CE327 Old Exam 1

CE327 Old Exam 1 - North Carolina State University...

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Unformatted text preview: North Carolina State University Reinforced Concrete Design CE 327 Spring 2003 Exam I - February 17, 2003 [Closed Book and Notes. Only ACI 318-02 and a single formula sheet allowed. Attach the formula sheet] A cantilever reinforced concrete beam with a rectangular box section, as shown, carries a uniform live load and its own dead weight No other dead load is applied. The span of the beam is 20 ft. Assume concrete has a compressive strength of 4, 500 psi, and steel 13 of Grade 620. There are 10 No.9 bars at the top and 2 No.9 bars at the bottom. Cross sectional area of a No.9 bars 15 1 1n2. There 15 3 1n cover to the center of all bars. Find the maximum live load that the beam can 0 . Also check if the beam satisfies the minimum steel and ductilit requirements of ACI 318-02? 50lo‘l’tdn: To? bad: on ‘l-Oflsuan ,bo'l-l-om vinCom‘s , t t . “' I v, A): ’0 th , A; =5 1m: ) d isle—5:2? ) El :[email protected] Axum. Q<hF é Cm3~s+ufl 3mm; I Cc+C5-T—’€>°8§F’ba+A5-Pj A5107 ® 0’53“ quoOXBOQ + 2—v<(o°°0° r' ‘°"“’°)°°° (1:4 \83<H‘—9 c: — = “"35 :50?" ,, /b\ O‘EKCQD K I 85 c C.—:l 8w , O DOW—7— (Ea:_ p] (90000 :0 002.61- E.) HZ‘lOOoooo Q9 Gm“: shim no’r 3m“— 5) afifi’ew , As P] a - 2, 350 .. (4le _L+3o.(45‘:° ” 1m ' '. 0,5SF_:ba+ P‘s ' , ‘50" a<hfi \/ afilj,sjcl e ((5% ,5 l M cane.) cunt—6!) seas? qud——-3+P e>__.'__0 M saw—CW = 14,480 K—m =113‘ 4° 'c 9+0 @' 0/6, ozo<o.3‘+S DUt’M‘Lf i35— ont/lecp:o.9 I Mvcpmnauoz. 55 K~f~+ Cy) (l 100131“ C9“L.)__ LZ' _Mq$<l.?.xo ‘S‘Ox 5° _‘%1x‘+ \Mw)x___noa9 2. ILL 00L :3.0\ [4 [pp 31,1210 (3 a, qsoo ‘7, '1‘ :_..__. __ ~ .7. A>m;n :Qaraoral: § 47 W 60000 (30 “Kg/2}) '1 ‘03.? m _% l-qu‘w‘<A3“-Wm 2.9.9, bud / 290 C3 ‘3)(13’) : Logo m” M F7 - caoooo 0— mm 51.)!) oK/ ® ...
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