A tape of 25m length was used to measure the length of a base line. Only tension and standardization corrections were needed. After applying both corrections the deduced length of the base line was found to be 1000m. Later on it was found that the actual pull applied was 155N and not the 175N as recorded in the field book and used in applying the correction. If the tape was standardized on the flat at 20ᵒC under a pull of 50N and the actual length of the tape was found to be 25.20m with a cross-sectional area of 6.5mm², E=200.8N/mm². Calculate i. The initial length measured on the field. ii. Correct the deduced length for the incorrect pull.
A tape of 25m length was used to measure the length of a base line. Only tension and standardization corrections were needed. After applying both corrections the deduced length of the base line was found to be 1000m. Later on it was found that the actual pull applied was 155N and not the 175N as recorded in the field book and used in applying the correction. If the tape was standardized on the flat at 20ᵒC under a pull of 50N and the actual length of the tape was found to be 25.20m with a cross-sectional area of 6.5mm², E=200.8N/mm². Calculate i. The initial length measured on the field. ii. Correct the deduced length for the incorrect pull.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A tape of 25m length was used to measure the length of a base line.
Only tension and standardization corrections were needed. After
applying both corrections the deduced length of the base line was found
to be 1000m. Later on it was found that the actual pull applied was 155N
and not the 175N as recorded in the field book and used in applying the
correction. If the tape was standardized on the flat at 20ᵒC under a pull of 50N and the actual length of the tape was found to be 25.20m with a
cross-sectional area of 6.5mm², E=200.8N/mm². Calculate
i. The initial length measured on the field.
ii. Correct the deduced length for the incorrect pull.
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