ALD
HOOSE
THE
LOWEST
ýVICTORY
*
max
mum
sare
unlpurm
luad
Mcap
uorrt
Mmax(
iF
cOtora
D3re
yung
N.A,
iF
nOt
uKe
12
Mcap.
=INA
dX
(rteel)
KN-M
INA
=
3
2
t
nAs
(d-x)
Mcapo.
fe
INA
(
corcrete)
KN
-n
rectangl
b(x)()
+(x)(2)
(*)
inangte
Ratio
&
proportion
(norizotal
dim
@NA)
t4ttotwr
Resirting
Moment)
Maximum
Capacaty
(1oet
capaity!)
MA
aoe
(Moments
*NASd-x)
+
tranpOm
ed
arta
-
MA
below
(Area)(moment
Arm)
To
Find
x
f
As
Nmm?
(
Area
oF
cteel
reinporcement)
Act
fs
nM(dx)
INA
trecr
Allouabe
I
Mc
INA
Mx
4700
fO
Eeoncrete
ESteel
2x10
MPai
(
modular
ratio)
AllowabieCopreriye
Strerr
(Act:)
Selpwegnt.
24
kN
m
(iF
not
given
*
cONCRETE
CRACKEO
-
LASTC
STRESES
STAGE
smler
Negotive
Bending
Sresr
/Flexural
Sorers
(
o/f)
Positive
Mc
T
prl
MPa,
ksi
for
Mbalance
:
KN
/m2
tension!
I.NA
always
Mor
(fr)(INA)
bh 3
Cracking
moment
(Mcr)NM,
K-pt,4
race
os,Ascam(
Yi)
n4
dcheckng
cr-ckd
or
INA
Ay-)
Abesn
t
(0)As
uncracked
or
M(h
AT
(9)
A1y1
A2Y2
INA
t Ad 2
(rectangular)
Eo
400
'c fC
(
(allowale
compresYe
elacticity)
meric
fot
<fr
turcr•ed)
ctrengn)
fr
7.5fc
iF
in
Englisn
),o
(
ashi
Erteei
200GPa
2xoS
MPa
metic
ft
LO
2P
(tensile)
ft < fr
*
UNCRACKEO
CONC
RETE
STAGE
CHAPTER
2
(WSO
RCD
DATE:
NO.:
pomuto)
abautNA)
Tensile
f
scel
(Act)
Njmm?
moduls
oF
Englin)
modulur
of
rupture)
