Trench Design 2o3z4k
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TITLE THIS DOCUMENT IS MBE'S PROPERTY AND MUST NOT BE USED EXCEPT IN CONNECTION WITH MBE'S WORK.REPRODUCTION, USE OR DISCLOSURE OF THE CONTENT OFTHIS DOCUMENT TO THIRD PARTY/IES WITHOUT EXPRESS/WRITTEN PERMISSION OF MBE IS STRICTLY PROHIBITED.
RCC Design of CABLE TRENCH for MCC Room
W023
JOB NO. SHEET NO. REVISION
PROJECT
PREPARED APPROVED
DOCUMENT NO.
DATE
0 A.M. R.K.B. 2/11/2014
DESIGN OF R.C.C. CABLE TRENCH: W 1500 x D 1500
Surcharge =
1 T/m2
Unit wt. of water =
1 T/m3
1500
150 150
150 1650
1.5 t/m2 (earth)
1500 Grade of concrete Grade of steel
M25 Fe500
Submerged unit wt. of soil gd Coefficient of Earth Pressure = Depth Effective cover Effective depth Width
0.750 0.50 t/m2 2 t/m (Surcharge) (water)
25 N/mm2 500 N/mm2 3 1 t/m 0.5
150 40 105 1000
mm mm mm mm
DESIGN OF SIDE WALL: Moment at bottom of wall = Mu/bd2 = pt = Ast (Required) = PROVIDED
10
Check for shear : Shear at the face of = Nominal shear stress.tv =
1.398 t m/m 1.902 N/mm2 0.484 5.1 cm2 DIA. @
mm C/C
2 5.23 cm ( pt = 0.498 ) AT BOTTOM.
2.438 T 2 0.35 N/mm
tc = 0.85*(0.8fck((1+5b)-1)/6b = where,
150
2 0.482 N/mm
b = 0.8 fck/ 6.89pt =
5.997
Total pt = where, Shear Capacity=
0.484 7.24 T
>
2.44 T OK
O.K.
RCC Design of CABLE TRENCH for MCC Room
TITLE THIS DOCUMENT IS MBE'S PROPERTY AND MUST NOT BE USED EXCEPT IN CONNECTION WITH MBE'S WORK.REPRODUCTION, USE OR DISCLOSURE OF THE CONTENT OFTHIS DOCUMENT TO THIRD PARTY/IES WITHOUT EXPRESS/WRITTEN PERMISSION OF MBE IS STRICTLY PROHIBITED.
JOB NO. REVISION
PROJECT
PREPARED APPROVED
DOCUMENT NO.
W023
SHEET NO.
DATE
0 A.M. R.K.B. 2/11/2014
DESIGN OF BASE OF TRENCH Self weight of trench = Live load over trench = Total Upward pressure = Net pressure = Free B.M at span = Mu/bd2 = pt = Ast (Required) = PROVIDED
8
1.69 1 2.69 1.65 1.04 0.353 0.480 0.120 1.3 DIA. @
t/m t/m t/m t/m2 t/m2 t m/m N/mm2 cm2 250
mm C/C
2 2.01 cm ( pt = 0.191 ) AT BOTTOM.
O.K.
Distribution Steel: Distribution reinforcement= 0.060 % of gross cross sectional area on each face Ast required = 0.06*150*1000/100 90.00 mm2 Spacing required = 558 mm Provide
8
mm dia
250
mm c/c as distribution reinforcement
OK
10 @ 150 c/c 8 @ 250 c/c 8 @ 250 c/c 1500
8 @ 250 c/c
1500 8 @ 250 c/c 8 @ 250 c/c
RCC Design of CABLE TRENCH for MCC Room
W023
JOB NO. SHEET NO. REVISION
PROJECT
PREPARED APPROVED
DOCUMENT NO.
DATE
0 A.M. R.K.B. 2/11/2014
DESIGN OF R.C.C. CABLE TRENCH: W 1500 x D 1500
Surcharge =
1 T/m2
Unit wt. of water =
1 T/m3
1500
150 150
150 1650
1.5 t/m2 (earth)
1500 Grade of concrete Grade of steel
M25 Fe500
Submerged unit wt. of soil gd Coefficient of Earth Pressure = Depth Effective cover Effective depth Width
0.750 0.50 t/m2 2 t/m (Surcharge) (water)
25 N/mm2 500 N/mm2 3 1 t/m 0.5
150 40 105 1000
mm mm mm mm
DESIGN OF SIDE WALL: Moment at bottom of wall = Mu/bd2 = pt = Ast (Required) = PROVIDED
10
Check for shear : Shear at the face of = Nominal shear stress.tv =
1.398 t m/m 1.902 N/mm2 0.484 5.1 cm2 DIA. @
mm C/C
2 5.23 cm ( pt = 0.498 ) AT BOTTOM.
2.438 T 2 0.35 N/mm
tc = 0.85*(0.8fck((1+5b)-1)/6b = where,
150
2 0.482 N/mm
b = 0.8 fck/ 6.89pt =
5.997
Total pt = where, Shear Capacity=
0.484 7.24 T
>
2.44 T OK
O.K.
RCC Design of CABLE TRENCH for MCC Room
TITLE THIS DOCUMENT IS MBE'S PROPERTY AND MUST NOT BE USED EXCEPT IN CONNECTION WITH MBE'S WORK.REPRODUCTION, USE OR DISCLOSURE OF THE CONTENT OFTHIS DOCUMENT TO THIRD PARTY/IES WITHOUT EXPRESS/WRITTEN PERMISSION OF MBE IS STRICTLY PROHIBITED.
JOB NO. REVISION
PROJECT
PREPARED APPROVED
DOCUMENT NO.
W023
SHEET NO.
DATE
0 A.M. R.K.B. 2/11/2014
DESIGN OF BASE OF TRENCH Self weight of trench = Live load over trench = Total Upward pressure = Net pressure = Free B.M at span = Mu/bd2 = pt = Ast (Required) = PROVIDED
8
1.69 1 2.69 1.65 1.04 0.353 0.480 0.120 1.3 DIA. @
t/m t/m t/m t/m2 t/m2 t m/m N/mm2 cm2 250
mm C/C
2 2.01 cm ( pt = 0.191 ) AT BOTTOM.
O.K.
Distribution Steel: Distribution reinforcement= 0.060 % of gross cross sectional area on each face Ast required = 0.06*150*1000/100 90.00 mm2 Spacing required = 558 mm Provide
8
mm dia
250
mm c/c as distribution reinforcement
OK
10 @ 150 c/c 8 @ 250 c/c 8 @ 250 c/c 1500
8 @ 250 c/c
1500 8 @ 250 c/c 8 @ 250 c/c
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