A flanged wooden shape is used to support the loads shown on the bear. The dimensions of the shape are shown in the second figure. Assume LAB= 8 ft. Lec-3 ft. Lcp=3ft,LDE=3ft, PC- 1840 lb, Pe=2210 lb, WAB= 780 lb/ft, b₁ = 10 in., b₂= 2 in., b3 = 7 in., d₁= 2 in. d₂ 10 in d3= 2 in. Consider the entire 17-ft length of the beam and determine: (a) the maximum tension bending stress or at any location along the bearn, and (b) the maximum compression bending stress o at any location along the beam. РЕ WAB LAB N B Pc f LBC b₁ C LCD -b₂ D d₁ LDE d₂ X

A flanged wooden shape is used to support the loads shown on the bear. The dimensions of the shape are shown in the second figure. Assume LAB= 8 ft. Lec-3 ft. Lcp=3ft,LDE=3ft, PC- 1840 lb, Pe=2210 lb, WAB= 780 lb/ft, b₁ = 10 in., b₂= 2 in., b3 = 7 in., d₁= 2 in. d₂ 10 in d3= 2 in. Consider the entire 17-ft length of the beam and determine: (a) the maximum tension bending stress or at any location along the bearn, and (b) the maximum compression bending stress o at any location along the beam. РЕ WAB LAB N B Pc f LBC b₁ C LCD -b₂ D d₁ LDE d₂ X

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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Concept explainers

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

A flanged wooden shape is used to support the loads shown on the bear. The dimensions of the shape are shown in the second figure.
Assume LAB= 8 ft. Lec-3 ft. Lco=3 ft. LDE-3 ft. Pc- 1840 lb, Pe=2210 lb, WAB= 780 lb/ft, b₁ = 10 in., b₂ = 2 in., b3= 7 in., d₁-2 in., d₂ = 10 in.,
d3= 2 in. Consider the entire 17-ft length of the beam and determine:
(a) the maximum tension bending stress or at any location along the bearn, and
(b) the maximum compression bending stress o at any location along the beam.
РЕ
WAB
LAB
N
B
Pc
f
LBC
b₁
C
LCD
-b₂
D
d₁
LDE
d₂
X

Answers:
(a) σT =
(b) oc
=
LAB
Z
B
LBC
b₁
b3
C
LCD
·b₂
psi.
psi.
↓
d₁
LDE
d₂
dz
↑
E

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