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Concrete surround is generally adopted for rigid drainage pipes to resist high traffic loads (for instance under shallow covers) and to allow for using pipes with lower strength. Furthermore the use of concrete surround can minimize settlement of adjacent structures. Additionally the highest possible accuracy in levels and gradient can be achieved by using concrete surround as considerable settlement is expected in other categories of beddings such as granular bedding.
The distribution of reinforcement in concrete pipes can't be uniform due to the occurrence of tensile stresses in different locations around the circumference of pipes. For illustration tensile stresses are highest at the inner face of pipes at invert and crown levels and at outer face of two sides of pipes. An elliptical cage can be designed in order to optimize the usage of steel reinforcement.
Fig: Concrete surround of drains
Asolid circular shaft of 25 cm diameter is to be replaced by a hollow shaft .The ratio of external to internal diameters being 2to1.Find the size of the hollow shaft if the maximum
Q. Shoes of prefabricated drains? Shoes are generally installed in prefabricated drains for the below : (i) It avoids the entry of soils in the mandrel by sealing it at the
Product Layout: Imagine a factory manufactures taps, drills, reamers and cutters. The production of each of these items needs different machines which may be placed in differe
Explain the Traffic Safety - Transportation Crash rates are normally considered better indicators of risk than crash frequencies. a. Crash rates for intersections are norma
They stop, or slow down erosion, and stop long shore drift. This, though, can have bad knock-on effects somewhere near.
sliding window lowered window sash or glazed window circular window
Ropeways: The system of ropeways consists of : (a) a cable suspended between towers, and (b) cars which move on the cable. Case with capacity upto 20 passengers is us
what is wet bituminous macadam
Define Dynamic Force Transfer Test of Shock Transmission Unit? This test mainly prove the lock up capability of the device. The STU shall be loaded in tension from zero to the
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