Choices of wooden beams used to support a floor that will sustain a uniformly distributed load of 2,200 pounds over a span length of 12 feet is being considered by a Project Engineer. Using structural-grade Douglas fir and limiting the deflection 1/300 of the span, the analyst found that there ae three common sizes that will meet the required conditions – 4 by 8 inches, 3- by 10 inches, and 2- by 12 inches. The 4- by 8- inch and 3-by 10- inch list as $175 per thousand board feet., and the 2-by 12- inch size can be obtained for only $150 per thousand board feet. Which size is the most economical?
Choices of wooden beams used to support a floor that will sustain a uniformly distributed load of 2,200 pounds over a span length of 12 feet is being considered by a Project Engineer. Using structural-grade Douglas fir and limiting the deflection 1/300 of the span, the analyst found that there ae three common sizes that will meet the required conditions – 4 by 8 inches, 3- by 10 inches, and 2- by 12 inches. The 4- by 8- inch and 3-by 10- inch list as $175 per thousand board feet., and the 2-by 12- inch size can be obtained for only $150 per thousand board feet. Which size is the most economical?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
100%
Choices of wooden beams used to support a floor that will sustain a uniformly distributed load
of 2,200 pounds over a span length of 12 feet is being considered by a Project Engineer. Using
structural-grade Douglas fir and limiting the deflection 1/300 of the span, the analyst found that
there ae three common sizes that will meet the required conditions – 4 by 8 inches, 3- by 10
inches, and 2- by 12 inches. The 4- by 8- inch and 3-by 10- inch list as $175 per thousand board
feet., and the 2-by 12- inch size can be obtained for only $150 per thousand board feet. Which
size is the most economical?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 4 steps with 4 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