Answered: A two-story office building totaling…

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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Question

A two-story office building totaling 18783 ft² is interpreted as a light hazard (200 ft²/sprinkler from Table 11.1). If black steel pipe is used, determine the riser size. Fill in the size of the pipe. If 2 1/2 in., input 2.5.

Hint: You should first determine how many sprinklers are there using area / [200ft2/sq], and then check this table, and find the size of the pipe. This is a light hazard classification, and the material is steel. You should look at the left-most column.

Pipe Size (in.)
1
114
11/₂2
2
21/2
3
31/2
4
5
6
8
Hazard Classification
Light
Steel
2
3
5
10
30
60
100
Copper
2
3
5
12
40
65
115
Ordinary
Steel
2
3
5
10
20
40
65
100
160
275
b
Copper
2
3
5
12
25
45
75
115
180
300
b

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