ONE WAY AND TWO WAY SLABS IN BUILDING CONSTRUCTION

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ONE WAY AND TWO WAY SLABS IN BUILDING CONSTRUCTION

INTRODUCTION

Multi storey buildings are made of structural skeletons and finishing, the structural skeleton of the building ensure the safe and stability of the building, finishing of the building bring the beauty and functionality of the constructed building.

The structural skeleton is the one that transfer loads from people, furniture, and other things to the foundation, structural skeleton consist of beams, columns, slabs, and pads.

Slab receive loads from people, furniture and other things as they rest on it, the load is then transferred to the beams that support slabs, from the beams the load is transferred to columns then to constructed foundation and finally to natural foundation that is soil.

The slab used in multi storey buildings can be any of two systems which is either one way slab or two way slab system, these systems are used in accordance to the distances at which slabs should be placed.


ONE WAY SLAB SYSTEM

This is the one directional type of slab that means the loading from supported things are transferred in one direction (to the longer beams), this direction of loading is due to difference in distances between supports that is, if the longer distances is greater than or equal to the two times short distance, then the slab system is one way slab.

Load transferring in one way slabs

The loading is on the slab is divided into two equal segments and each segment’s loading is transferred to one beam, in this type of slabs the main reinforcement is put in direction of loading (towards longer beams).

 The structural design of one way slab follows few steps and different to that of two way slab due to the fact that in one way slabs have moment in one direction.

TWO WAY SLAB SYSTEM

This is the two directional type of slab that means the loading from supported things are transferred in both direction (to the short and longer beams), these directions of loading is due to difference in distances between supports that is, if the longer distances is less than two times short distance, then the slab system is two way slab.

Loads transferring in two way slabs

The loading is on the slab is divided into four segments and each segment’s loading is transferred to one beam, in this type of slabs the main reinforcement is put in both direction of loading (towards all beams).

 The structural design of two way slab follows more steps and different to that of one way slab due to the fact that in two way slabs have moment in both direction.

The structural design of the one way and two way slabs will discussed in next posts, which will describe clearly with examples the design procedure of both type of slabs.

Do you think what is the economical type of slab between these two? let's start there in next post.

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