T Beam.xls

T Beam Analysis f'c = fy = beff = bw = d= hf = As =

4000 60000 45 12 19.5 4 1.73984

b1 =

beff

psi psi in. in. in. in. in2

clear span between parallel T beams

0.85

As min = As min

Input values in cells colored yellow - cells C3 through C9

3 f

' c

fy

bwd =

2 0.74 in

bw

bw

-

-

200 = bw d = fy

As min = hf so this analyse is valid - acts like a T-Beam 0.85 f (b  bw )h f ' c

fy

=

M uf = A sf f y (d - hf/2) = M uw = M uf - M u

Rnw =

M uw = fbw d 2

0.85 f c' rw = fy

2 10.88 in

1175.0 ft - k =

14100 k - in

322.5 ft - k =

3870 k - in

424.0

 2 Rnw  1  1  = 0.85 f c'   r w fyd a =

0 . 85 f c '

=

0.007779

0.85 f c' rw = fy

 2 Rnw  1  1  = 0.85 f c'   r w fyd a =

t =

=

4.759 in.

c = a/b1 =

5.599 in.

0 . 85 f c '

d c 0.003 = c f=

A sw = r w b w d = A s = A sw + A sf =

0.0109

-

0.9

-

2 3.03 in

As min =

3 f c'

2

13.91 in

As min =

Note: Solution is based on f = 0.9

fy

bwd =

200 bw d = fy

ellow - cells C3 through C9

hf d

not valid -go to box below

As min =

3 f c'

As min =

fy

bwd = 1.068059 in2

200 bw d = fy

-

2 1.3 in

-

alid - acts like a T-Beam