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State the term - constant eccentricity
A pre-stressed concrete beam has a width of 300 mm and an overall depth of 450 mm. The permissible stresses in tension and compression due to pre-stressing alone are 5 N/mm2 and 30 N/mm2, respectively. Find the required pre-stressing force in the tendon and the eccentricity of the tendon, if a straight tendon with a constant eccentricity is to be provided in the beam.
Explain Subcritical flow and Supercritical flow Subcritical flow: The depth of flow is greater than critical depth and the velocity of the fluid is slow. Also termed "tranquil"
Cross-sectional area of flow (ft 2 ) (A) For rectangular channels = (w)(d). For trapezoidal channels, divide the flow area into two side triangles and one center rectangle, so
what is snowcem?
Concept of load balancing In above cases of concentric and eccentric pre-stressing, straight tendon profiles (or tendon shapes) along the beam span have been considered. If a t
Dielectric materials are what kind of materials ? Answer: It is insulating materials.
Define Ways of providing the anti slip device - By Bolting? The elastomeric bearing can be vulcanised with a stainless steel outer plate. The stainless steel plate is provided
A piece of clay taken from a sampling tube has a wet weight of 1.553 N and volume of 95.3 cm 3 . After drying in an oven for 24 hours at 105°C, its weight 1.087 N. Suppose the spec
Question While design life will it be same as return period for design situations ? Answer Design life means least duration a structure is accepted to last. Longe
Pre-tensioning systems In the previous unit we have seen different steps in a pretensioning operation. Tendon wires or strands (formed as a rope type arrangement made of sever
Question In designing of watermain , regular practice is to use supple iron for pipe size less than 600mm and to use steel for pipe size additional than 600mm. Give some speci
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