design of concrete block anchor.xls
DESCRIPTION
designTRANSCRIPT
DESIGN OF CONCRETE BLOCK ANCHOR
From Staad Analysis result;
Py = 94.42 kN Factor of Safety against Overturning = 2.00M = 48.78 kN-m Factor of Safety against Sliding = 1.50Fx = 90.16 kN
Concrete block Dimension 2.50L = 2.50 mW = 1.50 m 94.42H = 2.00 m 48.78 0.63
90.16
= 18.90
= 24.00
##
#
Ka = 0.333
angle of friction =### = 0.577
##
#
Assumed Allow. Soil Pressure = 144.00o
Compute Static Earth Pressure
= 0.333 x 18.90 x 2.00 = 12.59
Loads L.A. @ Toe Moment @ Toe
Py = = 94.42 1.88 177.038
= 2.50 x 1.50 x 2.00 x 24.00 = 180.00 1.25 225.00274.42
M = 48.78Fx = = 90.16 2.00 180.32
= 0.50 x 12.59 x 2.00 x 1.50 = 18.88 0.67 12.59EQ1 = 0.10 x 180.00 = 18.00 1.00 18.00
127.04Check Stability
Righting Moment = 177.038 + 225.00 = 402.04Overturning Moment = 48.78 + 180.32 + 12.59 + 18.00 = 259.69
= 1.33 x 402.04 = 2.06 > 2.00 Safe259.69
Pv = 274.42H = 127.04
= 0.577 x 1.33 x 274.42 = 1.66 > 1.50 Safe
g soil kN/m3
gconc kN/m3
P1 P1
o tan 30o
kN/m2
P1
W1
P1
F.S. overturning
F.S. sliding
W1
127.04
abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz
DESIGN OF CONCRETE BLOCK ANCHOR (hydraulic anchor support)
From Staad Analysis result;
Py = 0 kN Factor of Safety against Overturning = 2.00M = 0 kN-m Factor of Safety against Sliding = 1.50Fx = 90.16 kN
Concrete block Dimension 2.50L = 2.50 mW = 2.10 m 0.00H = 2.00 m 0.00 0.63
90.16
= 0.00 0 in the pres. of passive pres.
= 24.00
##
#
Ka = 0.333
angle of friction =### = 0.577
##
#
Assumed Allow. Soil Pressure = 144.00o
Compute Static Earth Pressure
= 0.333 x 0.00 x 2.00 = 0.00
Loads L.A. @ Toe Moment @ Toe
Py = = 0 1.88 0
= 2.50 x 2.10 x 2.00 x 24.00 = 252.00 1.25 315.00252.00
M = 0Fx = = 90.16 2.00 180.32
= 0.50 x 0.00 x 2.00 x 2.10 = 0.00 0.67 0.00EQ1 = 0.10 x 252.00 = 25.20 1.00 25.20
115.36Check Stability
Righting Moment = 0 + 315.00 = 315.00Overturning Moment = 0 + 180.32 + 0.00 + 25.20 = 205.52
= 1.33 x 315.00 = 2.04 > 2.00 Safe205.52
Pv = 252.00H = 115.36
= 0.577 x 1.33 x 252.00 = 1.68 > 1.50 Safe115.36
g soil kN/m3
gconc kN/m3
P1 P1
o tan 30o
kN/m2
P1
W1
P1
F.S. overturning
F.S. sliding
W1
DESIGN OF CONCRETE BLOCK ANCHOR (hydraulic anchor support)
abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz