Preloaded Bolts (Pre-tensioned Bolts) | Advantages | Applications

Manual Pretensioning of Preloaded Bolts

Preloaded Bolt Bolts are tightened such that a high tension, usually above yield strength, is developed in the bolts, these are called preloaded bolts. The plates of the connection are thus clamped together and shear transfer between the plates is achieved through friction. Preload is the tension load developed in a fastener while tightening. The … Read more

6 Crucial Design & Construction Requirements of Formwork (Shuttering)

Formwork The function of formwork (Shuttering) is to hold freshly placed and compacted concrete till it has gained sufficient strength to be self-supporting. It also serves the purpose to produce a concrete member of the required shape, size and the desired finish. 6 Major Design and Construction requirements of Formwork The formwork should be sufficiently … Read more

Stress Control by Deflecting & Debonding Tendons in PSC Design

U Tub Composite Bridge Girder being Transported to site

Precast beams with straight, fully bonded tendons are very convenient for detailing and manufacture. However, one of the advantages of prestressing, namely using the dead toad of the unit to reduce transfer tensile stresses in the concrete, is lost in such members, because this tension becomes most critical at the ends of the beams, where … Read more

Civil Engineering

Civil Engineering work in Progress

Civil Engineering is the oldest and quintessential engineering profession. It encompasses a variety of sub-disciplines and jobs. Civil engineering is the oldest branch of engineering which is growing right from the stone age civilization. American Society of Civil Engineering defines Civil Engineering as the profession in which a knowledge of the mathematical and physical sciences … Read more