The plan of a three legged tower forms an equilateral triangle of 5m. If the total weight of the tower is 510 KN and is equally carried by all the legs. Compute the vertical stress increase caused in the soil by the tower at a depth of 5 m directly below one leg ___________ KN/m2.
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Solution
A very large and open reservoir feeds into a horizontally laid pipe which discharges into the atmosphere at its outfall.All losses other than by friction are to be neglected. Due to some unforeseen reason, an orifice like opening occurs at the mid length of the pipe where by 20% of the in flowing discharge from the reservoir is lost at this opening. The reduction in the available discharge at the outfall end is nearly
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Solution
The number of revolutions of a current meter in 40 sec. time were found to be 10 and 40 when the velocity of flow was 0.3 m/sec and 0.5 m/sec respectively. Velocity indicated by 60 revolutions of the current meter in 60 secs will be _______m/sec.
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Solution
The cultural command area for a distributary channel is 10,000 ha. The intensity of irrigation is 30% for wheat and 15% forrice. The Kor period for wheat is 4 weeks and forrice is 3 weeks. Kor watering depths for wheat and rice are 135 mm and 190 mm respectively. The discharge at outlet is_________ m3/sec.
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Solution
The elastic strain for steel is about
Secondary stresses in a roof trusses are induced due to
1.Purlins placed at intermediate points on panel lengths
2.Rigidity of the joints
3.Eccentricity of the bolt line and centroid of the member section.
of the above,
Inclination of slope required for a filling of 12 m high to be constructed with a factor of safety of 1.25 is _______.(Soil has C = 20 KN/m2, φ= 15°, γ= 17.0 KN/m3; for φm = 12°,Sn= 0.063 when slope is 30° and for Sn= 0.098 when slope is 45°).
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Solution
The change in active thrust at just above and below the level B in the diagram shown is ________ KN/m2.
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Solution
Maximum bending moment at B in the beam shown below will occur when the load is at
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Solution
So maximum bending moment will occur when the load is at Hinge C.
A post tension member (400 × 600)mm and 10 m long is provided with straight tendons which are tensioned to 1050 N/mm2 at the jacking end. The losses due to wobbling effect and curvature effect at the end will be _______(K = 0.30 per 100m, m= 0.30)
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Solution