Concrete Frame Structure essays

Concrete Frame Structure essays The design of multi-story concrete frame structures, as well as other permanent structures, is based on loads dictated by the end use of the structure. However, the loads applied to the structure during construction can greatly exceed the end use design loads. In multi-story concrete frame structures, these large loads occur when the concrete is poured on the successive floors. In the conventional manner of forming concrete for successive floors, the floor beneath the floor to be poured must support the weight of the forming, the weight of the reinforcing bars and the wet concrete, and any superimposed construction live load that can be applied by the workmen and equipment during the pouring of the concrete. The combination of these three loads, in most instances, is greater than the allowable live load of the floor supporting these loads. The problem is further compounded by the fact that the floor supporting these loads may not have The conventional manner in which these large construction loads are handled is to place props, commonly called reshores, between some number of floors under the floor supporting the construction load. These reshores, allow the construction load to be distributed in some way between the floors that are tied The manner in which the construction loads will be distributed between the floors that are reshored together is controlled by the manner that the backshores or reshores are installed, and the age of the concrete at which the various stages of It is the intention of this study to describe a method for accurately calculating the loads that are distributed between floors of a structure during all phases of the construction cycle. It is further intended to examine various construction techniques keep the load distributed to the floors within allowable limits, and also ...