Better grade of concretewith lower w/c ratio and well compacted. A polymeric coating isapplied to the concrete member to keep out aggressive agents. A polymeric coatingis applied to the reinforcing bars to protect them from moisture and aggressiveagents. Fly Ash – Using a Fly Ash concrete with very lowpermeability, which will delay the arrival of …
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Cofferdam is a temporary structure builtfor the purpose of excluding or soil sufficiently to permit construction toproceed without excessive pumping, and to support the surrounding ground.
The strength of concrete depends upon the amount of cement content, quality and grading of aggregates, water of concrete ratio, compaction and curing Strength of concrete increase very fast in the initial stage. In the 7 days, the strength gained is as much as 60 to 65present of 25 days strength it is customary to assume …
Comparison stone masonry and brick masonry Construction ofbrick masonry is quick as the uniform size and regular shape of bricksfacilitates in maintaining proper alignment. Whereas, the dressing and handlingof stone need more time and extra labour in the construction of stone masonry. Stone masonrypossesses higher strength, durability and weather resisting quantities thanbrick masonry Brick masonryhas …
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Before a bridge is constructed, a suitable site is selected based on certain factors which have bearing on the economy and stability of the bridge. Consideration selection bridge construction site 1. At bridge site, the reach of the stream should be straight. 2. The site should be geologically sound i.e. it should be away from …
The building envelope isequivalent to the skin of a building. In essence,a structure must be envelopedfrom top to bottom to prevent intrusion from nature’s elements into interior spacesand to protect the structural components from weathering and deterioration. Envelopescomplete numerous functions in a building’s life cycle,including ? Preventing water infiltration ? Controlling water vapor transmission ? …
Roads areessential for the economic development of a country. For speedy transportationof commodities a good network of roads is essential. Road mileagehas nowadays become a symbol of prosperity and advancement of a country. Duringemergencies such as accidents, the injured person can be rushed immediately toa hospital through a good system of roads. In such cases …
The integrity of a building structure depends ultimately on the stability and strength under loading of the soil or rock underlying the foundation. The type of foundation to be adopted for a building depends upon the load to be transmitted and the bearing capacity of the soil. When the site with a good bearing capacity …
Ventilation Management in long tunnels is the most important requirement not only for the working of machines but also for the sustenance of the personnel. Poisonous gases are generated by blasts in tunnel, exhaust of diesel operated machines, Carbon Dioxide generated by human breathing and besides, a tunnel may cut through strata with trapped foul …
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The most prominent tall buildings are called high-rise buildings.In the last twenty years the development the of high-rise buildings in the world has been very fast.