1. Desig n Compute moment per meter
Choose rft (same regulations as solid slabs)
5-10 bars/meter
Minimum diameter=10 mm
Preferable to have constant number of bars per meter
We can use consecutive different diameters.

2. Note s
Table ratios are based on column strip width equals field strip width
In case field strip width is larger, increase field strip moment by the following ratio, R
R=real width of field strip/(half C.L. to C.L.)
Reduce column strip moments accordingly
Rule:
[M(F.S.)+ M(C.S)]before=[M(F.S.)+M(C.S.)]after

3. Example
F.S.=4.25 m C.S.=2.75 m

5. Details of RFT [without drop panels]
If ts>160 mm
∴ shrinkage
bars must be placed
(clear span)

6. Details of RFT [with drop panel]
Ex:Let x of drop panel =3m There`s 15 ϕ /3m
∴ 2ϕ must be extended to supports
13 ϕ
Details of RFT [with drop panel]

9. Span perpendicular on marginal beam

10. Column s Resist normal force and bending moments
Internal columns resist 50% of column strip negative moment
Moment is distributed between lower and upper columns
Exterior columns resist 90% of column strip negative moment
Moment is distributed between lower and upper columns
Mcolumn= 0.9x0.25 Mo x stiffness ratio