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Q. What are the Parasitic forces for prestressing?
In statically determinate structures, prestressing forces will cause the concrete structures to end upwards. Therefore precambering is generally carried out to counteract such effect and make it more pleasant in appearance. Though for statically indeterminate structures the deformation of concrete members are restrained by the supports and consequently parasitic forces are developed by prestressing force in addition to bending moment produced by eccentricity of pre stressing tendons. The developed forces at support modify the reactions of concrete members subjected to external loads and generates secondary moments (or parasitic moments) in the structure.
design a 3-meter cantilever slab to carry a uniform total dead load of 8.2KN/m^2 and a concentrated live load at the free end of 30 KN/m. f''c=28Mpa fy=420Mpa.
different types of paints?
Bituminous Macadam: Bituminous Macadam (BM) is a base course in which coarse aggregates are mixed with a bituminous binder. The mix is open-graded with 20-25 per cent voids.
why strength of transition zone is less than bulk paste
Role of Each Mode of Transport: Each mode of transport has its own role to play in a country. The role of each is as under: Roads : Road transport carries 80 per cent of
Determine the moment of inertia with respect to the x axis for the shaded area shown (Figure 2) . The dimension is a = 2.00m
calculate the support reaction as shown in figure;
Explain the Confined Aquifer and Piezometric Surface Confined Aquifer Groundwater is confined by impervious geologic stratums on all sides. The water may be under pressure.
Q. Show Constituents of bricks? The brick is manufactured out of special. Type of brick earth consisting of clay and sand the proportion of clay and earth should be such that w
Verify the coefficient of elastic uniform compression if a vibration test on a concrete block of 1 m cube gave a resonant frequency of 36 Hz in vertical vibration. The weight of
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