1. A 30-m tape having a standard length of 30.005 m is to be used to lay-out a building that has plan dimensions of 150.000 by 270.000 m. What horizontal measurements must be made on the ground in the field to perform this layout? 2. A 50-m tape of standard length has a mass of 0.02kg/m, with a cross-sectional area of 0.04 sq. cm. It has a modulus of elasticity of 2.10x106 kg/sq. cm. The tape is of standard length under a pull of 5.5 kg when supported throughout its length and a temperature of 20°C. This tape was used to measure a distance between A and B and was recorded to be 458.65m. long. At the time of measurement, the pull applied was 8 kg. with the tape supported only at its endpoints and the temperature observed was 15°C. Assuming the coefficient of linear expansion of the tape is 0.0000116m/°C. Compute for the true length (with the combined effects of tension, sag, and temperature) of the measured line AB.

Q: A distance was measured on a uniform slope of 7% and was found to be 2345.21 ft. The tape…

A:

Q: Describe about the friction-circle analysis.

A: The friction circle is defined as a circle in which the maximum resultant force of braking and…

Q: Problem 2: Inputs: ● ● ● ● A = (3, 3) ft B = (9, 12) ft C = (3, 1) ft D = (9, 6) ft same as previous…

A:

Q: A steel tape is 100.00 ft long and has a weight of 0.0225 lb/ft and is used to measure a line from A…

A:

Methods of Surveying

Surveying is the practice to determine the relative three-dimensional positions of various points on the earth’s surface. This is done by computing the vertical and horizontal distances, angles between the points, collecting the observations, and plotting them on a map of any appropriate scale. Accuracy can be achieved by using the latest instruments like a theodolite, tachometer, etc. Leveling is a subdivision of surveying where the objective is to locate the elevation of objects considering a datum level.