5. A person of 70kg, intends to cross a river of width 10m, by balancing on a woodenbeam of rectangular cross-section: 50mm x 100mm. The maximum bending stresswhich the beam can tolerate is 35MN/m². Also to hand is a bamb00 pole of mass20kg, which the person could use to help him balance. How should the person attemptto cross? Give your reasons.10 mFig. T5

Answered: Image /qna-images/answer/4be3ac81-16b4-40fb-abd4-c10faea6b7bc.jpg

Answered: 5. A person of 70kg, intends to cross a…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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1. By SUPERPOSITION METHOD, determine the Ely value at 4m from left support of the simply supported beam loaded as shown. |20 kN 10 kN 10 kN/m 2 m 1 m 3 m
Problem 2: A ladder 6 m long has a mass of 18 kg and its center of gravity is 2.4 m from the bottom. Thae ladder is placed against a vertical wall so that it makes an angle of 60. with the ground. How far up the ladder can a 72 kg man climb before the ladder is on the verge of slipping? The angle of friction at all contact surfaces is 15..
A beam is loaded with a uniformly distributed load between the two roller supports and a single load at the overhang. It also has two internal hinges - one midway between the fixed support and the first roller support and the other midway between the two roller supports. Refer to the figure below for the magnitude of the loadings and dimensions. a) Draw the FBD of the beam and determine if the beam is statically determinate or indeterminate. 75 kN/m 100 KN 12.5 m 12.5 m 7.5 m 7.5 m 10 m b) If the beam is statically determinate, analyse it using the equilibrium equations. If the beam is statically indeterminate, analyse it using structural indeterminate methodologies such as setting up and solving the equations of equilibrium, equations of compatibility, and force-displacement relations. 1. Draw the FBD for each element of the beam and determine the axial forces, shear forces, and bending moments for each element. 2. Once all forces and moments are calculated, draw the FBD of the whole…
A two-tier system to repair bridges is supported by two steel cables for each platform. Lengths of the cables are la = 50 in. and lp = 190 in. Assume that two 190 lb workers are going to be standing on the system to repair a bridge, one on each platform. The following design requirement must be met: the stretch of each cable must be less than 0.02 in. at the worst-case loading condition for each cable. 140 in. 250 lb 190 in. 400 lb Determine the minimum diameter required for each cable. (Express your answers using two decimal places.) Cable at A: in. Cable at B: in. Cable at C: in. Cable at D: in.
3.11 (B). A beam, 12 m long, is to be simply supported at 2m from each end and to carry a u.d.i. of 30 kN/m together with a 30 kN point load at the right-hand end. For ease of transportation the beam is to be jointed in two places, one joint being situated 5 m from the left-hand end. What load (to the nearest kN) must be applied to the left- hand end to ensure that there is no B.M. at the joint (i.e. the joint is to be a point of contraflexure)? What will then be the bes position on the beam for the other joint? Determine the position and magnitude of the maximum B.M. [114 kN, 1.6 m from r.h. reaction; 4.7 m from 1h. reaction; 43.35 kN m.) present on the beam.

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