10.) A line XY is to be set out from point X using a 30 m steel tape. The horizontal length of XY given on drawings is 20.000 m. 122 Surveying for engineersRecords show that the tape was standardised on the 30.000 m site baseline as 29.995 m with 50 N tension applied to it at 18 °C. At the time of setting out, the tape is laid on the ground and pulled at a tension of 50 N and the temperature is 26 °C. A theodolite was used to measure the slope angle as 04°12'. If the 1 m graduation is held at X, calculate the length that should be set out on the tape along the direction XY to establish the exact position of Y.
10.) A line XY is to be set out from point X using a 30 m steel tape. The horizontal length of XY given on drawings is 20.000 m. 122 Surveying for engineersRecords show that the tape was standardised on the 30.000 m site baseline as 29.995 m with 50 N tension applied to it at 18 °C. At the time of setting out, the tape is laid on the ground and pulled at a tension of 50 N and the temperature is 26 °C. A theodolite was used to measure the slope angle as 04°12'. If the 1 m graduation is held at X, calculate the length that should be set out on the tape along the direction XY to establish the exact position of Y.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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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.
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