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Prestressed concrete poles
In the past decades, prestressed concrete poles have become popular and have replaced the traditional poles made of timber, steel or reinforced concrete. The earliest prestressed concrete poles were designed in 1933 by Freyssinet.
In bridge widening projects, means of stitching is normally employed for connecting existing deck to a new deck. What are the problems that occur connected with this process in ter
One pump lifts storm water from a storage tunnel wet well a constant vertical distance of 150 ft. The equivalent length Le of the 14 in diameter piping is 1,000 ft. Pressure drop d
Illustrate the types of prestressing we can classify prestressing into two forms : (a) longitudinal prestressing, and (b) circular prestressing.
Maintenance of Drainage: Maintenance of drainage will ensure that the run-off is taken away from the runway efficiently. The side ditches and buried pipes should be cleaned r
Explain the term - strength cement It should be appreciated that the tensioning arrangement shall have to be kept in place until tendons are cut. This shall depend on how quick
Cement is usually purchased as a powdery substance that is mixed with sand, aggregate, gravel, and water to form concrete. As the cement itself is usually a powder, it is hard to c
Moment Distribution: You have learnt about moment distribution procedure after deriving the slope deflection equation for the members. The concepts of distribution factor and
Durability requirements for Concrete Even though the alkaline environment of concrete protects steel, carbonation of hydrated cement may decrease the effective protection. The
Cross-sectional Elements: The terms used in the cross-section of a road are : Carriageway The portion where traffic moves. Shoulder The portion outside the ca
1. 130,000-yd 3 of banked soil from a borrow pit is stockpiled before being trucked to the jobsite. The soil has 18% swell and shrinkage of 8%. The final volume of the compacted
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