# i-beam

## Solution to Problem 551 | Unsymmetrical Beams

Problem 551

Find the maximum tensile and compressive flexure stresses for the cantilever beam shown in Fig. P-551.

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## Solution to Problem 532 | Economic Sections

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## Solution to Problem 531 | Economic Sections

**Problem 531**

A 15-ft beam simply supported at the ends carries a concentrated load of 9000 lb at midspan. Select the lightest S section that can be employed using an allowable stress of 18 ksi. What is the actual maximum stress in the beam selected?

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## Solution to Problem 524 | Flexure Formula

**Problem 524**

A beam with an S380 × 74 section carries a total uniformly distributed load of 3W and a concentrated load W, as shown in Fig. P-524. Determine W if the flexural stress is limited to 120 MPa.

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## Solution to Problem 520 | Flexure Formula

**Problem 520**

A beam with an S310 × 74 section (see Appendix B of textbook) is used as a simply supported beam 6 m long. Find the maximum uniformly distributed load that can be applied over the entire length of the beam, in addition to the weight of the beam, if the flexural stress is not to exceed 120 MPa.

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## Solution to Problem 519 | Flexure Formula

**Problem 519**

A 30-ft beam, simply supported at 6 ft from either end carries a uniformly distributed load of intensity w_{o} over its entire length. The beam is made by welding two S18 × 70 (see appendix B of text book) sections along their flanges to form the section shown in Fig. P-519. Calculate the maximum value of w_{o} if the flexural stress is limited to 20 ksi. Be sure to include the weight of the beam.

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