1. Calculate sag correction for a 30 m steel tape under a pull of 80 N, if it is suspended in three equal spans. Unit weight of steel is 78.6 kN/m3. Area of cross-section of tape is 8 mm2.

Q: Homework 4 H.W//4.1- The beam shown in figure below consists from steel and aluminum, find the…

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Q: Using the approximate equation, determine the number of #8 bars required to support a bending moment…

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Q: 2b This beam has a pinned support at the left end at A and a roller at the right end at H. There is…

A: Take moment about A:∑ MA=0RB4×b-P3×b-12w2b23×2b=0RB=5×3+0.762×43×154RB=7.56KN

Bars

In civil engineering, bars refer to steel reinforcement bars or rebars. These are structural members primarily used for reinforcement purposes in masonry works. A bar is characterized by its cross-sectional area, which is negligible compared to its length. Bars are usually manufactured by steel which is uniform throughout the length, or by meshing multiple steel wires. Other materials of the bar include carbon steel, glass fiber, carbon fiber, and basalt fiber. The reinforcing bars are coated with epoxy resins and other materials to enhance some of their properties including corrosion resistance.