T Beam.xls
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Transcript of T Beam.xls
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T Beam Analysis Input values in cells colored yellow - cells C3
f'c = 4000 psi
fy = 60000 psi
beff= 45 in.bw = 12 in.
d = 19.5 in.
hf= 4 in.
As = 1.73984 in2
b1 = 0.85
0.74 in2
-
-
As min = 0.78 in2
minimum
0.78 in2
hf: a < hf so this analyse is not valid
k-in
7.48 in 7854
5105
Asw = As - Asf= -5.74
-8170-8.44 -5310
- k -in = -
c = a/b1 = -9.93
-0.008891 beam is not ductile - co
bw bw
beff
clear spanbetweenparallel Tbeams
==bf
fAa
c
ys
'85.0
=
=003.0c
cd
t
=
=y
fwc
sff
hbbfA
)(85.0 '
== )2
()2
(a
dfAh
dfAM yswf
ysfn
=
= 003.0c
cdt
== dbf
fA w
y
c
s
'
min
3
== db
f
A wy
s
200min
==bf
fAac
ysw
'85.0
( )2nw sw y
a
M A f d= =
( )2
f
nf sf y
hM A f d= =
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f = 0.65
fMn = - k -in =see solution
above ft-k
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through C9
teel is OK
k - ft
= Mnf = 654.5
= Muf = 425.4
= Mnw = -680.8= Muw = -442.5
ft-k
or z = #VALUE!
e violation
hf
d
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T Beam Design Input values in cells colored yellow - cells
f'c = 3000 psi
fy = 60000 psi
beff= 79 in.bw = 15 in.
d = 26 in.
hf= 4 in.
Mu = 1497.5 ft-k
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b1 = 0.85
Mtu = 1450.4 ft-k
If a < hf
373.88 in. a > hf so this analysis is not valid -
0.006771
4.142038 in.
c = a/b1 = 4.872986
0.013007 -
f = 0.9
As = rbd = 13.90689 in
If a > hf: a > hf so this analyse is valid - acts
10.88 in2
Muf
= Asf
fy
(d - hf/2)1175.0 ft - k = 14100 k - in
Muw = Muf - Mu 322.5 ft - k = 3870 k - in
424.0
0.007779
bw bw
beff
clear spanbetweenparallel Tbeams
bw bw
beff
clear spanbetweenparallel Tbeams
==2bd
MR un
f
=
= 003.0ccdt
=
=y
fwc
sff
hbbfA
)(85.0 '
=
=
'
'
85.0
211
85.0
c
n
y
c
f
R
f
fr
=='85.0 c
y
f
dfa
r
==2db
MR
w
uw
nwf
=
='
'
85.0
211
85.0
c
nwc
wf
R
f
fr
=As min3
=As2
min
==2bd
MR un
f
=
= 003.0ccdt
=
=y
fwc
sff
hbbfA
)(85.0 '
=
=
'
'
85.0
211
85.0
c
n
y
c
f
R
f
fr
=='85.0 c
y
f
dfa
r
==2db
MR
w
uw
nwf
=
='
'
85.0
211
85.0
c
nwc
wf
R
f
fr
=As min3
=As2
min
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4.759 in.
c = a/b1 = 5.599 in.
0.0109 -f = 0.9 -
A sw = rwb wd = 3.03 in
A s = A sw + A sf = 13.91 in2
Note: Solution is based onf = 0.9
=
=003.0c
cd
t
=='
85.0 c
yw
f
dfa
r
=As min3
=As2
min
=
=003.0c
cd
t
=='
85.0 c
yw
f
dfa
r
=As min3
=As2
min
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C3 through C9
o to box below
1.068059 in2
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1.3 in2
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1.068059 in2
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1.3 in2
