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Determine about the post-tensioned concrete
The transfer stage may take place after a long time from the casting of concrete, in the case of post-tensioned,members, enabling the concrete to achieve a very high strength. This is the reasoA that IS :1343-1980 specifies a larger minimum concrete grade of M 40 (a concrete mix whose 15 cm cubes achieve a compressive strength of 40 N/mm2 after 28 days of curing in water under specified conditions of temperature) compared to M 30 grade of concrete in the case of post-tensioned concrete members.
Figures (a) and (b) respectively give details of a simply-supported bridge beam and its (idealised) cross-section. In addition to the dead load of 25 kN/m (including self weight),
Question Spacing of manholes in straight sections for diverse pipe sizes is stated in Storm water Drainage Manual. How are figures arrived on? Answer For pipe size
A certain soil has 99% by weight finer than 1 mm, 80% finer than 0.1 mm, 25% finer than 0.01 mm, 8% finer than 0.001 mm. Draw the grain-size distribution curve and determine the pe
the two sides of a triangle are 17cm and 28 cm long, and the length of the median drawn to the third side is equal to 19.5. find the distance from an endpoint of this median to the
explain the construction while aligning roads on hilly areas
when we provide open foundation in bridges?
Seismic loading principles Ground motion Effects of ground motion are specified as one of the acceleration delineation spectrum or time history of acceleration variation m
Define the Working of Ground Penetrating Radar? Ground penetrating radars (GPR) and low frequency sound are also used in scour survey. These are good in shallow water but not v
Q. Explain Census of Traffic at Level Crossings? Periodical census of traffic at all level crossings, unmanned/manned should be taken at least once in five years to review the
differentiate between moment & couple
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