8/13/2019 Biaxial Base Plate2

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The Bolts are Safe in Shear 

The Bolts are Safe in Tension

Interaction Check for Bolts

The Bolts are safe in Interaction Check

Summary

Length of plate : m B

Width of plate : m z

Pl. thickness (Tprovided) : cm

D

x x

B x D3

D x B3 z

Hence, Design Bearing Pressure for Plate = <

Plate is supported on two sides & two sides are free.

Refer Book ` Formula for Stress & Strain' By Roark & Young for value of b1

= x cms Hence   b1 = For a/b =

Therefore,

b1 x q x b2

x x

= > = Revise thickness 2.8

9.871850.0

Trequired 3.20 cms Tprovided

T2 =

1.754 54.66 190.44=

60.0 Kg/cm2

  = = 1850 Kg/cm2 Hence

T2

546.58 T/m2

Hence Safe 

Plate Panel(axb) 13.7 13.8 1.754 0.99

54.66 Kg/cm2

+ 0.10 = 54.66 Kg/cm2

0.303 0.028 0.028 ) =Bearing Press.(qc) forMax. Comp.

= ( 39.13 + 11.47

= 0.008 m4

0.3025 m2

= 0.008 m4

 provide 12 Nos of 39 mm dia Grade 8.8 Type Bolts

Ixx =12

Izz =12

2.8

A = =B x D

0.55

0.55

= 0.2615.48 23.23

+ (5.60

)= (0.26

)

DESIGN OF BASE PLATE

< 1.4Permisible Shear Force Permisible Tensile Force(  Actual Tensile Force

max shear per

bolt

)(  Actual Shear Force ) +

0.64 ton

1.600 12

=

 

< Shear Capacity of Bolt

1.600.

a b