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Tunnel Design
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SO NO. 8401
SHEET NO.
REV. NO. R-1
PREPARED SR
APPROVED SN
DOC. NO. DATE
DESIGN OF BASE RAFT
1.0 General Data
1.1 Factored moment
Direction X : Along transverse direction (span)
Direction Y : Along longitudinal direction
Along X
SPAN MOMENT
Load Combination 201 PL. No.-734
Maxm. Moment Mx = 38.92 kN-m/m
Design Moment, Mxd Mxd = 38.92 kN-m/m
SUPPORT MOMENT
Load Combination 202 PL. No.- 819
Maxm. Moment Mxd = 43.6 kN-m/m
Design Moment, Mxd Mxd = 43.60 kN-m/m
1.2 Section data
Depth of section D = 300 mm
Width of the section b = 1000 mm
1.3 Material Properties
Compressive strength of concrete fck = 25 N/mm2
Yield strength of steel fy = 500 N/mm2
2.0 Computation of steel requirement in X direction
SPAN MOMENT
Steel rebar dia. ft = 16 mm
Clear cover tension steel c1 = 40 mm
Effective cover c1e = 48 mm
Effective depth d = 252 mm
Mu/bd² = 0.61 N/mm2
per m. width
As per SP-16 Table-3 100 As/bd = 0.145
As = 365.63 mm2
> Minm reqd. 0.12%
Spacing of 16 dia bars = 300 mm 360 mm2/ m
Area of provided steel As = 670 mm2
100 As/bd = 0.27
SUPPORT MOMENT
Steel rebar dia. ft = 16 mm
Clear cover tension steel c1 = 40 mm
Effective cover c1e = 48 mm
Effective depth d = 252 mm
Mu/bd² = 0.69 N/mm2
per m.
4 MANGOE LANE, 7TH
FLOOR,
KOLKATA – 700 001., INDIA
PROJECT URANIUM ORE PROCESSING PLANTTHIS DOCUMENT IS MBE’S
PROPERTY AND MUST NOT BE
USED EXCEPT IN CONNECTION
WITH MBE’S WORK.
REPRODUCTION, USE OR 2-M009-DC-6-007
McNally Bharat TITLE CONVEYOR TUNNEL 1BC-3ENGINEERING COMPANY
LIMITED
=
As per SP-16 Table-3 100 As/bd = 0.163
As = 411.12 mm2
> Minm reqd. 0.12%
Spacing of 16 dia bars = 300 mm 360 mm2/ m
Area of provided steel As = 670 mm2
100 As/bd = 0.27
3.0 Computation of shear steel
Load Combination 202 PL. No.-820
Maxm. Shear at d distance from wall face SQX = 0.207 N/mm2
Load Combination 202 PL. No.- 824
Maxm. Shear at d distance from wall face SQY = 0.008 N/mm2
Design Shear tv = 0.207
0.21 N/mm2
% steel provided at the section = 0.27
As per SP 16 Table:61/Table:19 IS456:2000
tc 0.370 N/mm2
(SAFE)
ALONG X
SPAN MOMENT
Provide 16Y @ 300 c/c as main reinf
SUPPORT MOMENT
Provide 16Y @ 300 c/c as main reinf
ALONG Y
Provide 12Y @ 300 c/c as transv. reinf
CHECK FOR DEPTH:
Ref: Chart 23 SP-16 (IS-456)
Reinf. percentage prov. = 0.27
Ratio ( span/eff. depth) = 23
For span = 4 Eff. Depth = 174 mm
( required )
Hence depth provided ( 300 mm ) is OK.
Dia @ mm c/c Dia @ mm c/c
=
=
m
SO NO. 8401
SHEET NO.
REV. NO. R-1
PREPARED SR
APPROVED SN
DOC. NO. DATE
DESIGN OF TUNNEL WALL
`
1.0 General Data
1.1 Factored moment
Direction X : Along horizontal direction (span)
Direction Y : Along vertical direction
Along Y
SPAN MOMENT
Load Combination 203 PL. No.-653
Maxm. Moment My = 34.3 kN-m/m
Design Moment, Myd Myd = 34.30 kN-m/m
SUPPORT MOMENT
Load Combination 202 PL. No.- 422
Maxm. Moment Myd = 53.754 kN-m/m
Design Moment, Myd Myd = 53.75 kN-m/m
1.2 Section data
Depth of section D = 300 mm
Width of the section b = 1000 mm
1.3 Material Properties
Compressive strength of concrete fck = 25 N/mm2
Yield strength of steel fy = 500 N/mm2
McNally Bharat TITLE CONVEYOR TUNNEL 1BC-3
ENGINEERING COMPANY LIMITED
4 MANGOE LANE, 7TH
FLOOR,
KOLKATA – 700 001., INDIA
PROJECT URANIUM ORE PROCESSING PLANTTHIS DOCUMENT IS MBE’S
PROPERTY AND MUST NOT BE USED
EXCEPT IN CONNECTION WITH
MBE’S WORK. REPRODUCTION, USE
OR DISCLOSURE OF THE CONTENTS 2-M009-DC-6-007
1.0M 59.88 KN/M2 59.88 + 9
3 M
Dia @ mm c/c Dia @ mm c/c Y Spacing Dia @ mm c/c Dia @ mm c/c
X
Y
WALL 300 THK
Z
2.0 Computation of steel requirement in Y direction
SPAN MOMENT
Steel rebar dia. ft = 16 mm
Clear cover tension steel c1 = 40 mm
Effective cover c1e = 48 mm
Effective depth d = 252 mm
Mu/bd² = 0.54 N/mm2
per m. width
As per SP-16 Table-3 100 As/bd = 0.128
As = 321.63 mm2
< Minm reqd. 0.12%
Spacing of 16 dia bars = 300 mm 360 mm2/ m
Area of provided steel As = 670 mm2
100 As/bd = 0.27
SUPPORT MOMENT
Steel rebar dia. ft = 16 mm
Clear cover tension steel c1 = 40 mm
Effective cover c1e = 48 mm
Effective depth d = 252 mm
Mu/bd² = 0.85 N/mm2
per m.
As per SP-16 Table-3 100 As/bd = 0.203
As = 510.59 mm2
> Minm reqd. 0.12%
Spacing of 16 dia bars = 300 mm 360 mm2/ m
Area of provided steel As = 670 mm2
100 As/bd = 0.27
3.0 Computation of shear steel
Load Combination 202 PL. No.-587
Maxm. Shear at d distance from wall face SQX = 0.018 N/mm2
Load Combination 203 PL. No.- 708
Maxm. Shear at d distance from wall face SQY = 0.3 N/mm2
Design Shear tv = 0.3
0.30 N/mm2
% steel provided at the section = 0.27
As per SP 16 Table:61/Table:19 IS456:2000
tc 0.370 N/mm2
(SAFE)
ALONG Y
SPAN MOMENT
Provide 16Y @ 300 c/c as main reinf
SUPPORT MOMENT
Provide 16Y @ 300 c/c as main reinf
ALONG X
Provide 12Y @ 300 c/c as transv. reinf
CHECK FOR DEPTH:
Depth provided is OK. Refer clarification given under Base Raft.
Dia @ mm c/c Dia @ mm c/c
=
=
=
SO NO. 8401
SHEET NO.
REV. NO. R-1
PREPARED SR
APPROVED SN
DOC. NO. DATE
DESIGN OF TOP SLAB
1.0 General Data
1.1 Factored moment
Direction X : Along transverse direction (span)
Direction Y : Along longitudinal direction
Along X
SPAN MOMENT
Load Combination 201 PL. No.-25
Maxm. Moment Mx = 47.3 kN-m/m
Design Moment, Mxd Mxd = 47.30 kN-m/m
SUPPORT MOMENT
Load Combination 202 PL. No.-15
Maxm. Moment Mxd = 44.33 kN-m/m
Design Moment, Mxd Mxd = 44.33 kN-m/m
1.2 Section data
Depth of section D = 300 mm
Width of the section b = 1000 mm
1.3 Material Properties
Compressive strength of concrete fck = 25 N/mm2
Yield strength of steel fy = 500 N/mm2
2.0 Computation of steel requirement in X direction
SPAN MOMENT
Steel rebar dia. ft = 16 mm
Clear cover tension steel c1 = 40 mm
Effective cover c1e = 48 mm
Effective depth d = 252 mm
Mu/bd² = 0.74 N/mm2
per m. width
McNally Bharat TITLE CONVEYOR TUNNEL 1BC-3ENGINEERING COMPANY
LIMITED 4 MANGOE LANE, 7
TH FLOOR,
KOLKATA – 700 001., INDIA
PROJECT URANIUM ORE PROCESSING PLANTTHIS DOCUMENT IS MBE’S
PROPERTY AND MUST NOT BE
USED EXCEPT IN CONNECTION
WITH MBE’S WORK.
REPRODUCTION, USE OR 2-M009-DC-6-007
As per SP-16 Table-3 100 As/bd = 0.178
As = 447.96 mm2
> Minm reqd. 0.12%
Spacing of 16 dia bars = 300 mm 360 mm2/ m
Area of provided steel As = 670 mm2
100 As/bd = 0.27
SUPPORT MOMENT
Steel rebar dia. ft = 16 mm
Clear cover tension steel c1 = 40 mm
Effective cover c1e = 48 mm
Effective depth d = 252 mm
Mu/bd² = 0.70 N/mm2
per m.
As per SP-16 Table-3 100 As/bd = 0.166
As = 418.36 mm2
> Minm reqd. 0.12%
Spacing of 16 dia bars = 300 mm 360 mm2/ m
Area of provided steel As = 670 mm2
100 As/bd = 0.27
3.0 Computation of shear steel
Load Combination 201 PL. No.-113
Maxm. Shear at d distance from wall face SQX = 0.265 N/mm2
Load Combination 201 PL. No.- 119
Maxm. Shear at d distance from wall face SQY = 0.013 N/mm2
Design Shear tv = 0.265
0.27 N/mm2
% steel provided at the section = 0.27
As per SP 16 Table:61/Table:19 IS456:2000
tc 0.370 N/mm2
(SAFE)
ALONG X
SPAN MOMENT
Provide 16Y @ 300 c/c as main reinf
SUPPORT MOMENT
Provide 16Y @ 300 c/c as main reinf
ALONG Y
Provide 12Y @ 300 c/c as transv. reinf
CHECK FOR DEPTH:
Depth provided is OK. Refer clarification given under Base Raft.
Dia @ mm c/c Dia @ mm c/c
=
=
=
