A line was determined to be 2538.45 m when measured with a 45m tape supported throughout its length under a pull of 3.4 kg at a mean temperature of 36⁰C. Tape used is of standard length at 20.2⁰C under pull of 4.1 kg. Cross sectional area of tape is 0.03 cm^2. Coefficient of thermal expansion is 0.0000116/⁰C. Modulus of elasticity of tape is 2.3x10^6kg/cm2 ▪ Determine the error of tape due to change in temperature. ▪ Determine due the error of tension. ▪ Determine the corrected length of the line.

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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A line was determined to be 2538.45 m when measured with a 45m tape supported throughout its length under a pull of 3.4 kg at a mean

temperature of 36⁰C. Tape used is of standard length at 20.2⁰C under pull of 4.1 kg. Cross sectional area of tape is 0.03 cm^2. Coefficient of

thermal expansion is 0.0000116/⁰C. Modulus of elasticity of tape is 2.3x10^6kg/cm2

▪ Determine the error of tape due to change in

temperature.

▪ Determine due the error of tension.

▪ Determine the corrected length of the line.

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where did the highlighted part came from?

length of the
L + 1₁ + 1₂
= 25 38-45 +0.46525
= 2538.45 +0.46525- 0.02572
= 2538 88953
Correct
=
m
T
0.000456x 56.41
Transcribed Image Text:length of the L + 1₁ + 1₂ = 25 38-45 +0.46525 = 2538.45 +0.46525- 0.02572 = 2538 88953 Correct = m T 0.000456x 56.41
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where did 56.11 or 56.41 in 2nd line on corrected length of the line come from after the value of - 0.000456? 

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