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3. The A-36 steel drill shaft of an oil well extends 12000 ft into the ground. Assuming that the pipe used to drill the well is suspended freely from the derrick at A, determine the maximum average normal stress in each pipe string and the elongation of its end D with respect to the fixed end at A. The shaft consists of three different sizes of pipe, AB, BC, and CD, each having the length, weight per unit length, and cross-sectional area indicated. AAB= 2.50 in.² WAB=3.2 lb/ft ABC= 1.75 in? WBC= 2.8 lb/ft B 5000 ft 1 5000 ft

3. The A-36 steel drill shaft of an oil well extends 12000 ft into the ground. Assuming that the pipe used to drill the well is suspended freely from the derrick at A, determine the maximum average normal stress in each pipe string and the elongation of its end D with respect to the fixed end at A. The shaft consists of three different sizes of pipe, AB, BC, and CD, each having the length, weight per unit length, and cross-sectional area indicated. AAB= 2.50 in.² WAB=3.2 lb/ft ABC= 1.75 in? WBC= 2.8 lb/ft B 5000 ft 1 5000 ft

Structural Analysis
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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3. The A-36 steel drill shaft of an oil well extends 12000 ft into the ground. Assuming that the pipe used to drill the well is suspended freely from the derrick at A, determine the maximum average normal stress in each pipe string and the elongation of its end D with respect to the fixed end at A. The shaft consists of three different sizes of pipe, AB, BC, and CD, each having the length, weight per unit length, and cross-sectional area indicated. AAB= 2.50 in.² WAB= 3.2 lb/ft ABC= 1.75 in? WBC= 2.8 lb/ft ACD= 1.25 in.² WCD= 2.0 lb/ft B C D 5000 ft 5000 ft 2000 ft
Transcribed Image Text:3. The A-36 steel drill shaft of an oil well extends 12000 ft into the ground. Assuming that the pipe used to drill the well is suspended freely from the derrick at A, determine the maximum average normal stress in each pipe string and the elongation of its end D with respect to the fixed end at A. The shaft consists of three different sizes of pipe, AB, BC, and CD, each having the length, weight per unit length, and cross-sectional area indicated. AAB= 2.50 in.² WAB= 3.2 lb/ft ABC= 1.75 in? WBC= 2.8 lb/ft ACD= 1.25 in.² WCD= 2.0 lb/ft B C D 5000 ft 5000 ft 2000 ft
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