A box beam is fabricated from two plywood webs that are secured to dimension lumber boards at its top and bottom flanges. The beam supports a concentrated load of P = 450O Ib at the center of a span of length L = 16 ft. The cross-section dimensions are shown where h1 = 14 in., h2 = 5.0 in., b1 = 4.0 in., and b2 = 0.50 in. Bolts (%-in. diameter) connect the plywood webs and the lumber flanges at a spacing of s = 12.0 in. along the span. Supports A and C can be idealized as a pin and a roller, respectively. Determine: (a) the maximum horizontal shear stress in the plywood webs. (b) the average shear stress in the bolts. (c) the maximum bending stress in the lumber flanges. h2 Plywood webs h h2 b2 Determine the moment of inertia l, for the cross-section about the z centroidal axis.
A box beam is fabricated from two plywood webs that are secured to dimension lumber boards at its top and bottom flanges. The beam supports a concentrated load of P = 450O Ib at the center of a span of length L = 16 ft. The cross-section dimensions are shown where h1 = 14 in., h2 = 5.0 in., b1 = 4.0 in., and b2 = 0.50 in. Bolts (%-in. diameter) connect the plywood webs and the lumber flanges at a spacing of s = 12.0 in. along the span. Supports A and C can be idealized as a pin and a roller, respectively. Determine: (a) the maximum horizontal shear stress in the plywood webs. (b) the average shear stress in the bolts. (c) the maximum bending stress in the lumber flanges. h2 Plywood webs h h2 b2 Determine the moment of inertia l, for the cross-section about the z centroidal axis.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:A box beam is fabricated from two plywood webs that are secured to dimension lumber boards at its top and bottom flanges. The
beam supports a concentrated load of P = 450O Ib at the center of a span of length L = 16 ft. The cross-section dimensions are
shown where h = 14 in., h2 = 5.0 in., b1 = 4.0 in., and b2 = 0.50 in. Bolts (%-in. diameter) connect the plywood webs and the lumber
flanges at a spacing of s = 12.0 in. along the span. Supports A and C can be idealized as a pin and a roller, respectively. Determine:
(a) the maximum horizontal shear stress in the plywood webs.
(b) the average shear stress in the bolts.
(c) the maximum bending stress in the lumber flanges.
h2
Plywood
webs
hi
b2
b2
Determine the moment of inertia lz for the cross-section about the z centroidal axis.
Answer: Iz= i
in.4.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 6 steps with 6 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning