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AECT480-Homework%202-S2009

# AECT480-Homework%202-S2009 - AECT 480 Reinforced Concrete...

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AECT 480 – Reinforced Concrete Design Spring 2009 Homework # 2 Problem 1 (10 points each) GIVEN : The 5 different beam loading diagrams as shown. REQUIRED : NEATLY draw (using straightedge) and label the complete shear + moment diagrams to each on separate pages. CIRCLE + HIGHLIGHT Maximum positive & negative moments. 17’-0” 4’-0” 11’-0” 11’-0” 11’-0” 700 PLF 12’-0” 7’-0” 30’-0” 5 Kips 9 Kips Beam 1 700 PLF 6’-0” 7’-0” 30’-0” 5 Kips 9 Kips Beam 2 700 PLF 12’-0” 4’-0” 30’-0” 5 Kips 9 Kips Beam 3 700 PLF 6’-0” 7’-0” 30’-0” 5 Kips 9 Kips Beam 4 700 PLF 6’-0” 30’-0” 5 Kips 9 Kips Beam 5 20’-0”

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Problem 2 (25 points) GIVEN : A commercial building has T-beams spaced 8’-6” (center-to-center) with a 4½” thick concrete slab as shown in the framing plan and cross-section views below. Use the following information: Superimposed service floor dead load (NOT including conc. wt.) = 62 PSF Superimposed service floor live load = 75 PSF Concrete f’ c = 4000 PSI
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AECT480-Homework%202-S2009 - AECT 480 Reinforced Concrete...

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