Rcc Roofs After Earthquakes

Same as roof 3 but the airflow through the hollow passage is permitted by opening the ends to the ambient.

Rcc roofs after earthquakes.

Second when flexural hinging is anticipated in columns or beams closely spaced and properly sized transverse reinforcement ties stirrups spirals. The structure should be made as light as possible because the force of earth quake is a function of the mass. Knowledge gained from the 1971 san fernando earthquake led to two major findings. 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.

Let s see what are they in details. Masonry buildings with light roofs such as tiled roofs are more vulnerable to out of plane vibrations since the top edge can undergo large deformations. To make the most of land area buildings may be built right up to the boundary of a property. Wooden buildings during earthquakes.

On the 25 th of april 2015 a 7 8 m w earthquake hit the central northern part of nepal. If the height is more it should be reinforced with steel rods and should be fixed with roof slab or bottom wall. Additional comments on earthquake damage patterns. 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.

Down a roof and cause more damage. 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. It is always useful to investigate the behavior of masonry buildings after an earthquake so as to identify any inadequacies in earthquake resistant design. 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.

This is also most common type of construction in areas of high seismicity. 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. It is also most suitable material for earthquake resistant construction due to its light weight and shear strength across the grains as observed in 1933 long beach 1952 kern county 1963 skopje and 1964 anchorage earthquake. However during the 2001 earthquake bhonga constructions performed at least as well as modern masonry constructions with cement mortar and rcc roof.

Minor damage for walls constructed with cement mortar and significant damage for walls constructed with mud mortar were observed after bhuj. Particularly the roof and upper stories of building should be designed as light as possible.