Simplified Design for Beams and One-Way Slabs - Simplified Design of Reinforced Concrete Buildings - page 49

concentraded loads. Also, they are not intended to apply to members supporting or attached to nonstructural
elements likely to be damaged by deflections (ACI 9.5.2.1).

Table 3-1 Minimum Thickness for Beams and One-Way Slabs

Beams and One-way Slabs Minimum h

Simple Span Beams or Joists*

/16

Beams or Joists Continuous at one End

/18.5

Beams or Joists Continuous at both Ends

/21

Simple Span solid Slabs*

/20

Solid Slabs Continuous at one End

/24

Solid Slabs Continuous at both Ends

/28

* Minimum thickness for cantilevers can be considered equal to twice that for a
simple span.

35 35

Simple span
beams or joist

30 30

Continuous
beams or joist-
one end cont.

25 25

20 20

Continuous beams
or joist-both ends cont.

15 15

Continuous slabs
both ends cont.

10

Simple span
slabs

5

Continuous
slabs-one
end cont.

0

5 10 15 20 25 30 35 40 50

Clear Span, n (ft)

Figure 3-1 Minimum Thicknessees for Beams and One-Way Slabs