An 8m steel tape was purchased and advertised as follows: Standard temperature : 24°C Standard Pull : 7.5kgs Tape weight : 0.60 kgs Cross sectional area : 0.049 sq.cm. A survey team was required to lay out a rectangular field office measuring 9.5m x 4.75m in the following field conditions: Ambient field temperature : 40°C Actual pull : 13.2kg In addition, the tape was supported on both ends and at midspan during all measurements.
An 8m steel tape was purchased and advertised as follows: Standard temperature : 24°C Standard Pull : 7.5kgs Tape weight : 0.60 kgs Cross sectional area : 0.049 sq.cm. A survey team was required to lay out a rectangular field office measuring 9.5m x 4.75m in the following field conditions: Ambient field temperature : 40°C Actual pull : 13.2kg In addition, the tape was supported on both ends and at midspan during all measurements.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
An 8m steel tape was purchased and advertised as follows:
Standard temperature : 24°C
Standard Pull : 7.5kgs
Tape weight : 0.60 kgs
Cross sectional area : 0.049 sq.cm.
A survey team was required to lay out a rectangular field office
measuring 9.5m x 4.75m in the following field conditions:
Ambient field temperature : 40°C
Actual pull : 13.2kg
In addition, the tape was supported on both ends and at midspan
during all measurements.
** The modulus of elasticity of the tape is 2.03x106 kg/sqcm and the coefficient
of thermal expansion is 0.0000116m/°C
Effect field conditions on Tape
a) What is the effect of temperature on the tape?
(Too Long or Too Short)?: ____________________
b) What is the effect of pull on the tape?
(Too Long or Too Short)?: ____________________
c) What is the effect of sag on the tape?
(Too Long or Too Short)?: ____________________
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