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What is Thermo-electric prestressing
We know that, stretched tendons are used in prestressed concrete. Stretching of tendons may be accomplished by using jacks or by other means. Thermo-electric prestressing is just another method of stretching the tendon wiers. We know that if we increase the temperature of a metal, it expands. As the name suggests, in Thermo-electric prestressing, temperature of tendon wires is increased by passing electric current for a short duration. This temperature increase, taking place within 3-5 minutes, may be of an order of 300-400°C. The bars, which may undergo an expansion of about 0.4-0.5% in length, try to shorten at cooling butare checked by fixed anchors at the two ends.
Define varigions principle of moments and write about system of forces?
Types of fluid mechanics
Alluvial Streams: In alluvial streams, the regime width of a river is calculated from the Lacey's formula : W = 4.8 Q ½ where W = Regime width in m, and Q = Discha
Analyse the state of stress: For the cross-section shown in above figure, let us take b = 100 mm, d = 300 mm and M = 9 × 10 7 N mm and Q = 18 × 10 4 N and analyse the state
20MM AGGRIGATE PASSING SHEDULE
State the importance of structural element If this structural element is used as a beam element, subjected to self load and other imposed transverse loads, then the bottom fibr
Features of a Stratigraphical Survey phase The principal features of a Stratigraphical Survey phase are: a) Determination of depth of ground water, thickness, extent and ap
Q. Local Scour at obstructions in rivers? When the water flow in river is deflected by obstructions such as bridge piers, scouring would occur arising from formation of vortexe
horizontal and verticle allignment
Project specifications require a relative compaction of 95% (modified Proctor). Construction of a highway embankment requires 10,000-yd 3 of fill. The borrow soil has an in-situ
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