In this paper presents a comparative investigation based on various types of effective confining material, like stapled stirrups, WWM, welded spot stirrups, ferrocement, FRP .The transverse reinforcement plays an important role in the ductility of th
rectangular tank design on primary informationDescripción completa
Descripción completa
Calculo de una Zapata Rectangular con Metodo ACI y CBH
Análisis y diseño por Flexión Biaxial de columnas de concreto armadoDescripción completa
yrtyrtyDescripción completa
DESIGN OF BIAXIAL BENDING COLUMN INPUT DATA : 1 ) LATRAL DIMENSION IN X- DIRECTION 2 ) LATRAL DIMENSION IN Y- DIRECTION 3 ) CHARACTERISTIC STRENGTH OF CONCRETE ( fCK )
= = =
600 450 25
mm mm N / mm2
3 ) CHARACTERISTIC STRENGTH OF STEEL ( fy )
=
415
N / mm2
4 ) FACTORED LOAD ( Pu )
=
3403
KN
5 ) FACTORED MOMENT ( MUX )
=
209
KN.m
= =
163 3.2 1.5 40
KN.m m % mm
6 ) FACTORED MOMENT ( MUY) 7 ) HEIGHT OF COLUMN ( H ) 8 ) PERCENTAGE OF REINFORCEMENT ( P ) 9 ) CLEAR COVER
= =
SOLUTION : P / fck
=
0.06 UNIAXIAL MOMENT CAPACITY OF THE SECTION ABOUT XX-AXIS : ENTER THE DIA METER OF THE BAR = 25 mm EFFECTIVE COVER ( d' ) = 52.5 mm d' / D = 0.0875 Pu / fck .b.D = 0.504 M u / f ck .b.D
2
MUX1
= =
0.08 324000000 N.mm
UNIAXIAL MOMENT CAPACITY OF THE SECTION ABOUT YY-AXIS : EFFECTIVE COVER ( d' ) = 52.5 mm d' / D = 0.1166667 Pu / fck .b.D = 0.504 M u / f ck .b.D 2
=
MUX1
=
212625000 N.mm
PUZ
=
4293920.5 N
PU / PUZ
=
0.07
CALCULATION OF PUZ : 0.793
CALCULATION OF ASC : 4188.0682 mm 9
AREA OF STEEL AT COMPRESSION = NO OF BARS = CHECK FOR BIAXIAL BENDING : an ( MUX / MUX1 )an + ( MUY / MUY1 )an
=
2 1
=
SAFE IN CHECK DESIGN OF TIES : 1/4 X MAIN ROD DIA DIA OF TIES SPACING OF TIES
= = =
6.25 6 300
mm mm mm
2
600mm
9 NOS OF 25mm DIA ,Fe415 BARS 450mm 6mm DIA Fe415 BARS @300mm C/C 40mm
CROSS SECTION
6mm DIA Fe415 BARS @300mm C/C 9 NOS OF 25mm DIA ,Fe415 BARS
600mm LONGITUDINAL SECTION
10 15 20 25 35 45 50 55 60 65 70 75 80
250 415 500
PUZ : 6 TIES =
6.25
SPACING OF TIES 16 * DIA = 400 mm 300 mm 450 mm 9 NOS OF 6 mm DIA
