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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.
Statically indeterminate structures a. Fall into two categories: 1. Beam problems with additional supports/restraints 2. Axial bar members subjected to temperature/forc
In this question we consider a bended outlet of pipe flow AB. End A is attached to an incoming pipe by a flange connection. The pipe diameter at A is the same as the incoming pipe,
Define Steel substructure - underwater inspection of bridge? Steel is used as a structural material and as external protective cladding on concrete foundation elements. Steel f
how to calculate grading modulus
1. The center line elevation of the proposed roadway at station is 345+25.50 is 327.36-ft. The existing ground top of cut elevation (ft) is most nearly: 2. A design engineer c
What is foundation?
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Q. What is Rail Lubricators? 1. P & M type of lubricators - These lubricators can be used for lubrication of FF rails as well as BH rails. 2. Elgi grease pump - Elgi Bucket
Determine the total head and total pressure of water flowing at in a pipe which has the following data: Flow= 2,500 gpm; Elevation = 30 ft; Pressure = 40 psi; Pipe Diameter =
define of window pivoted
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