Civil Engineering Reference
In-Depth Information
Design of a one-way slab
6.1 INTRODUCTION
The floor plan of a two-story medical facility building is shown in
Figure 6.1. The column spacing was dictated by the size of the equipment
that occupies the ground floor. The second floor system is a one-way RC
slab spanning along the east-west plan direction. The building is located in
a region of low seismicity. Loading of each floor consists of the self-weight,
a superimposed dead load of 2.5 psf, and a live load of 100 psf.
This example describes the procedure to design a 1-foot slab strip of
the second floor. The design is presented as a sequence of ten steps as
summarized here:
Step 1 Define slab geometry and concrete properties
Step 2 Compute factored loads
Step 3 Compute ultimate and bending moments and shear forces
Step 4 Design FRP primary reinforcement for bending moment capacity
Step 5 Check creep rupture stress
Step 6 Check crack width
Step 7 Check maximum midspan deflection
Step 8 Check shear capacity
Step 9 Design FRP secondary reinforcement for temperature and
shrinkage
Step 10 Fire safety check
The results of the slab strip design are summarized next to facilitate
understanding of the nine sequential steps devoted to calculations.
6.2 DESIGN SUMMARY
Based on a slab thickness of 8 in., the following loads are considered.
Slab self-weight
96.7 psf
Superimposed dead load
2.5 psf
193
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