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Calculate the section modulus for:
(a) a
(b) a pipe cross section having an inner diameter of
(c) the cross section of Example 14.16, with respect to the weak axis.
![Check Mark](/static/check-mark.png)
(a)
The section modulus of a 6-in.-by-10in. (S4S) timber cross section should be determined.
Answer to Problem 14.1P
Explanation of Solution
Given:
The nominal size of timber is 6in. x 16 in.
We can get the dressed dimension of the timber from the table of properties of solid rectangular timber as
Concept Used:
The cross-section diagram of S4S timber is as below:
Calculation:
We can calculate the section of modulus for given rectangular beam with the strong axis from formula,
Conclusion:
The section modulus of a 6-in.-by-10in. (S4S) timber cross section with respect to the strong axis is
![Check Mark](/static/check-mark.png)
(b)
The section modulus of a pipe cross section having diameter of 100 mm and 114 mm inner and outer respectively should be determined.
Answer to Problem 14.1P
Explanation of Solution
Given:
The cross section of a pipe with the measures of diameter as,
Concept Used:
The cross section of the given pipe with inner diameter of 100mm and outer diameter of 114mm is as below:
Calculation:
We can calculate the section of modulus for given pipe from formula, 9136124030
Conclusion:
The section modulus is
![Check Mark](/static/check-mark.png)
(c)
The section modulus of the cross section of example 14.16, with respect to the weak axis should be determined.
Answer to Problem 14.1P
Explanation of Solution
Given:
The data which we can get from problem 14.16 is b =12 in. and h =6 in.
Concept Used:
The cross section of the given beam as per problem 14.16 is as below:
Calculation:
We can calculate the section of modulus for given rectangular beam with the weakest axis from formula,
Conclusion:
The section modulus is
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- Mechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage Learning
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