Rcc Roofs After Earthquakes

Allowing the water to run off your roof and onto your neighbour s land is considered very bad form so the roof may be cut back a few cms from the property line and a concrete gutter cast along the top of the wall to collect the water and carry it away.

Rcc roofs after earthquakes.

This is also most common type of construction in areas of high seismicity. Because of the extensive amount of assessment data produced after this event it was selected as the first case to build an earthquake priority index model on. Particularly the roof and upper stories of building should be designed as light as possible. However during the 2001 earthquake bhonga constructions performed at least as well as modern masonry constructions with cement mortar and rcc roof.

It is always useful to investigate the behavior of masonry buildings after an earthquake so as to identify any inadequacies in earthquake resistant design. Earthquake the required strengthen ing of seismically weak buildings is to be determined by a survey and analysis of the structures. Let s see what are they in details. First if the soft first story concept is used large permanent displacements are likely during major earthquakes.

Rcc roof waterproofing is an important process used to make it more adequate to endure rainwater or any other form of water pour without crossing into its composition. Second when flexural hinging is anticipated in columns or beams closely spaced and properly sized transverse reinforcement ties stirrups spirals. On the 25 th of april 2015 a 7 8 m w earthquake hit the central northern part of nepal. Ii just after a damaging earthquake temporary supports and emergency repairs are to be carried so that pre cariously standing buildings may not collapse during aftershocks and the less damaged ones could be.

Knowledge gained from the 1971 san fernando earthquake led to two major findings. In this article we are going to learn about some of the widely used chemical treatments that are quite popular in rcc roof waterproofing work. Wooden buildings during earthquakes. Minor damage for walls constructed with cement mortar and significant damage for walls constructed with mud mortar were observed after bhuj.

Down a roof and cause more damage. To make the most of land area buildings may be built right up to the boundary of a property. If the height is more it should be reinforced with steel rods and should be fixed with roof slab or bottom wall. The structure should be made as light as possible because the force of earth quake is a function of the mass.

A 150 mm thick rcc roof covered with 75 mm thick hollow clay tiles hollow passages 50 mm 50 mm are blocked at the ends and no air flow is permitted. Additional comments on earthquake damage patterns.