7.) A steel tape of a nominal length of 30 m was used to check the distance between two offset pegs A1 and A2 on a construction site. The following results were obtained with the tape suspended between A1 and A2. Length recorded on tape Heights Temperature A2 Tension applied A1 23.512 m 21.50 m 23.50 m 28 °C 100 N When compared to a 25.000 m baseline, the tape read 24.994 m with 50 N tension applied to it at 15 °C. The cross-sectional area of the tape is 2.0 mm2 and it weighs 4.5 N. Calculate the horizontal length A1 to A2.
7.) A steel tape of a nominal length of 30 m was used to check the distance between two offset pegs A1 and A2 on a construction site. The following results were obtained with the tape suspended between A1 and A2. Length recorded on tape Heights Temperature A2 Tension applied A1 23.512 m 21.50 m 23.50 m 28 °C 100 N When compared to a 25.000 m baseline, the tape read 24.994 m with 50 N tension applied to it at 15 °C. The cross-sectional area of the tape is 2.0 mm2 and it weighs 4.5 N. Calculate the horizontal length A1 to A2.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Note: Where appropriate, assume that Young's modulus (E) for steel is 200 KN mm-2
and the coefficient of thermal expansion of steel (a) is 0.0000112 per °C.
OWN SOLVING AND NOT CHATGPT FOR UPVOTE
Transcribed Image Text:7.) A steel tape of a nominal length of 30 m was used to check the distance between two offset pegs A1
and A2 on a construction site. The following results were obtained with the tape suspended between A1
and A2.
Length recorded on
tape
A1
23.512 m
Heights
A2
Temperature
21.50 m
23.50 m
100 N
When compared to a 25.000 m baseline, the tape read 24.994 m with 50 N tension applied to it at 15 °C.
The cross-sectional area of the tape is 2.0 mm2 and it weighs 4.5 N. Calculate the horizontal length A1 to
A2.
Tension applied
28 °C
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