Problem H04-02. Reinforced-concrete beam design [Points: 1/3]. Design the cantilever rectangular reinforced beam shown i

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Problem H04 02 Reinforced Concrete Beam Design Points 1 3 Design The Cantilever Rectangular Reinforced Beam Shown I 1 (74.89 KiB) Viewed 32 times

Problem H04-02. Reinforced-concrete beam design [Points: 1/3]. Design the cantilever rectangular reinforced beam shown in the figure. Provide a maximum of #8 size bars, in two rows if necessary; f. = 3,000 lb/in². f = 50,000 lb/in². Sketch the design. Comply your design with the ACI specifications for beams (see slides 26-29 of lecture 'L07 - Concrete Flexion (Mar-30- 2020).pdf). Explain why the reinforcement steel has to be laid at the top and not at the bottom. D=2.500 lb/ft (excluding self weight) L = 2,500 lb/ft 12 ft- Hints: Review Example L07-02 and L07-03 of your lecture notes. Premultiply dead loads by 1.2 and live loads by 1.6, then perform structural analysis to compute and locate the most distressed cross section with the maximum design external load moment Mu(external load) the reinforced concrete beam is distressedly 'feeling'. Equate this external design moment action with Mu(strength capacity) *M, where M, is the nominal strength (internal capacity of the beam molecules) to resist the external moment demand (see slide 15 of Lecture 'L07-Concrete Flexion I'). Perform straight the steps for "Design of Beam Sections and Rein- forcement provided in Lecture 'L07 - Concrete Flexion I' and simultaneously comply provisions of the ACI specifications for beams (see slides 26-29 of lecture 'L07 - Concrete Flexion I'. Compute then the design moment capacity Mustrength capacity) the molecules of the reinforced concrete beam can develop. If Mu(strength capacity) Mu(external load), the reinforcing steel and cross section proposed are acceptable; if not, seek for a stronger cross section (e.g. increase width, height and reinforcing steel amount), then review again from scratch.