Q: The lengths of the sides of a plot of land were measured, and they were equal to (200 x 300 m) using a bar of nominal length (30 m) and real length (29.995 m) at a temperature of (10) degrees Celsius. Calculate the magnitude of the tension applied during work, which gave the measured dimensions equal to the real dimensions if the tape was suspended from both ends when measuring the long side and resting on the ground when measuring the short side. Note that Ts = 200 C, Ps = 45 N, a = 0.0000115/ C° ,and 9 A = 2 mm2 , W = 0.8 kg E = 200 kN / mm2 E =

Jisoo used a 40 meter steel tape in measuring an inclined distance on a gentle slope. The sloping distance was recorded to be 440 meters long. The difference in elevation between the initial point and the end point was found to be 32.49 m. The 40-meter tape is of standard length at a temperature of 20 °C and a pull of 34 N. During measurement, the temperature reading was 44 °C and the tape was supported throughout its length with an applied pull of 82 N. The cross-sectional area of the tape is 1.54 mm^2 and the modulus of elasticity is 200 GPa. The tape has a mass of 0.68 kg. Determine the corrected horizontal distance in meters. Round off to two decimal places.

Problem 3. Calculate the moment of inertia of the following area with respect to its y centroidal axis. PL 1/2X6 PL 3/8X8 PL 1/2X6 c Note 1 PL aXc PL = plate; a = thickness; c= longer dimension a and c are in inches. Note 2 For a rectangle with base = b and height = h, the moment of inertia with respect to its centroidal axis is equal to (1/12)bh³.

A steel tape standardized at 20degree celcius and supported through out under tension of 90N Was found to be 30.377m long. The tape had a cross sectional area of 55mm^2 and a weight of 73g/m. This tape was used supported at the ends only with a constant tension of 78N to measure a line from A to B in nine segments. The data given in the following table were recorded. Apply correction for tape, length,temperature,pull,sag and tape not horizontal to determine the correct length of the line Difference in Elevation Cm) 0-392 Section Meacured Recarded Distance) Tempergrare A-1 15 1- 2 30 15 0.301 2-3 30 16 O.191 3-4 16 0-255 4-5 30 16 0-38 5-6 30 8.636 6-7 0.782 7-6 30 0-825 8-8 25.348 18 0.578 Sum = 265-348 m