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Baseplate
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DESIGN OF BASE PLATEP
M
h
L= 60
T
40
19.79 kg/cm2
kh= 31.17 20.21 kg/cm2Axal Load P 25000 kgBending Moment M 750000 kg-cmWidth of Member w 28.5 cmWidth of Member p 40 kg/cm2Pernissible bending stress 1890 kg/cm2Let the Size of base Plate
Length L 60 cmWidth B 50 cm
Edge Distance( From bolt to Edge of Plate) e1 7.5 cm
Distance of Center of Plate/ Member to center of bolt e2 22.5 cmProjection from Plate to edge of plate e3 15.75 cmDistance from Edge Plate to Center of bolt h 52.5 cmTaking Moment about the Anchor Bolt
1/2 * p* kh * B*( h-kh/3) = P*e2+M k^2 ( ph^2B/6) - k ( ph^2B/2) + (P*e2+M) = 0 (ax2 + bx+ c = 0)
( ph^2B/6) 918750( ph^2B/2) -2756250
P*e2+M 1312500a b c
1.00 -3.00 1.43k = 0.59 kh 31.17
Tension in the Rods T 6167.834 kgStess in Rods fs 492.7888 kg/cm2
Area of Steel Required 1251.62 mm2Provide 2 Bolts of 25 mm Dia
Thickness of Base Plate Bendnig Moment at Section x1 - x1 50885 kg-cmBendnig Moment at Section x2 - x2 206278 kg-cmTherfore Maximum Bending Moment 206278 kg-cm
e1 e2e3
x1
x1
x21
x2
Thickness of Base Plate required 36.19 mmProvide Thickness of Base Plate 36.00 mm
DESIGN OF BASE PLATEP
M
hL= 100
T
40
33.49 kg/cm2
kh= 76.78 6.51 kg/cm2
Axal Load P 114200 kg
Bending Moment M 5470000 kg-cm
Width of Member w 75 cm
Allowable Pressure Concrete p 40 kg/cm2
Pernissible bending stress 1890 kg/cm2
Let the Size of base Plate
Length L 100 cm
Width B 100 cm
Edge Distance( From bolt to Edge of Plate) e1 6.25 cm
Distance of Center of Plate/ Member to center of bolt e2 43.75 cm
Projection from Plate to edge of plate e3 12.5 cm
Distance from Edge Plate to Center of bolt h 93.75 cm
Taking Moment about the Anchor Bolt
1/2 * p* kh * B*( h-kh/3) = P*e2+M
k^2 ( ph^2B/6) - k ( ph^2B/2) + (P*e2+M) = 0 (ax2 + bx+ c = 0)
( ph^2B/6) 5859375
( ph^2B/2) -17578125
P*e2+M 10466250
a b c
1.00 -3.00 1.79
k = 0.82 kh 76.78
Tension in the Rods T 39362.64 kg
Stess in Rods fs 159.1201 kg/cm2
But Stess in Rod Limited 1000 kg/cm2
e1 e2e3
x1
x1
x21
x2
Therfore Actual Stress Rod 159.1201 kg/cm2
Area of Steel Required 24737.7 mm2
Provide 5 Bolts of 32 mm Dia
Thickness of Base Plate
Bendnig Moment at Section x1 - x1 246016 kg-cmBendnig Moment at Section x2 - x2 295542 kg-cmTherfore Maximum Bending Moment 295542 kg-cmThickness of Base Plate required 30.63 mm
Provide Thickness of Base Plate with Stiffeners 32.00 mm
DESIGN OF BASE PLATE - P2P
M
h
L= 150
T
40
19.83 kg/cm2
kh= 49.57 20.17 kg/cm2Axal Load P 65500 kgBending Moment M 9100000 kg-cmWidth of Member w 100 cmWidth of Member p 40 kg/cm2Pernissible bending stress 1890 kg/cm2Let the Size of base Plate
Length L 150 cmWidth B 110 cm
Edge Distance( From bolt to Edge of Plate) e1 12.5 cm
Distance of Center of Plate/ Member to center of bolt e2 62.5 cmProjection from Plate to edge of plate e3 25 cmDistance from Edge Plate to Center of bolt h 137.5 cmTaking Moment about the Anchor Bolt
1/2 * p* kh * B*( h-kh/3) = P*e2+M k^2 ( ph^2B/6) - k ( ph^2B/2) + (P*e2+M) = 0 (ax2 + bx+ c = 0)
( ph^2B/6) 13864583.3333333( ph^2B/2) -41593750
P*e2+M 13193750a b c
1.00 -3.00 0.95k = 0.36 kh 49.57
Tension in the Rods T 43561.28 kgStess in Rods fs 1277.042 kg/cm2
But Stess in Rod Limited 1000 kg/cm2Therfore Actual Stress Rod 1000 kg/cm2
Area of Steel Required 4356.13 mm2Provide 4 Bolts of 32 mm Dia
Thickness of Base Plate
Bendnig Moment at Section x1 - x1 544516 kg-cm
e1 e2e3
x1
x1
x21
x2
Bendnig Moment at Section x2 - x2 1143861 kg-cmMaximum Bending Moment 1143861 kg-cm 330000Thickness of Base Plate required 57.46 mm 30.86067
Provide Thickness of Base Plate with Stiffeners 32.00 mm 32.00
DESIGN OF BASE PLATE -P1P
M
h
L= 140
T
30
16.82 kg/cm2
kh= 45.53 13.18 kg/cm2Axal Load P 52000 kgBending Moment M 2380000 kg-cmWidth of Member w 100 cmWidth of Member p 30 kg/cm2Pernissible bending stress 1890 kg/cm2Let the Size of base Plate
Length L 140 cmWidth B 70 cm
Edge Distance( From bolt to Edge of Plate) e1 12.5 cm
Distance of Center of Plate/ Member to center of bolt e2 57.5 cmProjection from Plate to edge of plate e3 20 cmDistance from Edge Plate to Center of bolt h 127.5 cmTaking Moment about the Anchor Bolt
1/2 * p* kh * B*( h-kh/3) = P*e2+M k^2 ( ph^2 *B/6) - k ( ph^2*B/2) + (P*e^2+M) = 0 (ax^2 + bx+ c = 0)
( ph^2*B/6) 5689687.5( ph^2*B/2) -17069063
P*e^2+M 5370000a b c
1.00 -3.00 0.94k = 0.36 kh 45.53
Tension in the Rods T -4191.29 kgStess in Rods fs 972.1199 kg/cm2
But Stess in Rod Limited 972.1199 kg/cm2Therfore Actual Stress Rod 972.1199 kg/cm2
Area of Steel Required -431.15 mm2Provide 4 Bolts of 32 mm Dia
Thickness of Base Plate
Bendnig Moment at Section x1 - x1 -31435 kg-cm
e1 e2e3
x1
x1
x21
x2
Bendnig Moment at Section x2 - x2 358505 kg-cmMaximum Bending Moment 358505 kg-cm 439453.125Thickness of Base Plate required 40.32 mm 44.6428571Provide Thickness of Base Plate with Stiffeners 32.00 mm 40 mm
Sheet1P3P2P1