9.0.design Of Floor Slab-two Way-r0.pdf

ISGEC HEAVY ENGINEERING LIMITED PROJECT TITLE

PIPE CONVEYOR SYSTEM TO TRANSPORT COAL FROM WCL COAL MINES TO KORADI & KHAPERKHEDA TPS DOCUMENT NO.

REV

ES0154-75990800-CAL-2001 DESIGN CALCULATIONS – MCC PANEL AND CONTROLL ROOM

0

9.0. Design of Slabs

Panel reference:-

S1 (3.5m Floor slab)

Grade of Concrete

Length-3.35m X Breath-4.7m =

Grade of Steel

M25 Fe500

Cover to Main reinforcement

=

20mm

L1

=

3.4

m

L2

=

4.7

m

L1

=

3.475 m

L2

=

4.825 m

ly/lx

=

1.39

Thickness of the slab

=

150 mm

Thickness of the slab

=

150 mm

Water proof , Solar panel & hung load

=

2 1.20 KN/m

Live Load

=

2 10.00 KN/m

Total Load

=

2 14.95 KN/m

Sizes of the panel Sizes of the panel Ratio

Boundary condition

Two Adjacent Edges discontinuous

Shorter direction Moment coefficients Positive Negative

= =

0.053 0.071

Positive

=

9.57

Negative

=

12.818

Positive

=

0.201

Negative

=

0.274

Positive

=

251.1

Negative

=

342.1

Moment Values

% of Reinforcement (pt)

Area of Reinforcement (Ast)

Design Results along short span Detailing for

Bar dia (mm) Spacing req (mm) Spacing pro (mm)

Positive Steel

10

310 c/c

250 c/c

Negative Steel

10

225 c/c

200 c/c

ISGEC HEAVY ENGINEERING LIMITED PROJECT TITLE

PIPE CONVEYOR SYSTEM TO TRANSPORT COAL FROM WCL COAL MINES TO KORADI & KHAPERKHEDA TPS DOCUMENT NO.

REV

ES0154-75990800-CAL-2001 Longer direction Moment coefficients Positive

=

0.035

Negative

=

0.047

Positive

=

6.319

Negative

=

8.485

Positive

=

0.155

Negative

=

0.211

Positive

=

178.4

Negative

=

263.7

Moment Values

% of Reinforcement (pt)

Area of Reinforcement (Ast)

Design Results along long span Detailing for

Bar dia (mm) Spacing req (mm) Spacing pro (mm)

Positive Steel

10

375 c/c

250 c/c

Negative Steel

10

295 c/c

200 c/c

Maximum allowable spacing

=

375 mm

Distribution Reinforcement

=

Y10 at 436 c/c

(Minimum steel)

Check for Deflection Ast provided

=

10 @

250 c/c

Ultimate Moment

M

=

14.35 KNm

Effective depth

d

=

125 mm

Mu/bd2 Modification factor

= =

0.55+(477-fs)/(120*(0.9+M/bd2)) <=2 fs =

Allowable Deflection

Actual Deflection

0.919

L/d

(2*fy*As req)/(3* As prov) =

1.72

=

1.72*26

=

44.72 mm

=

27.8 mm

< 45

SAFE

ISGEC HEAVY ENGINEERING LIMITED PROJECT TITLE

PIPE CONVEYOR SYSTEM TO TRANSPORT COAL FROM WCL COAL MINES TO KORADI & KHAPERKHEDA TPS DOCUMENT NO.

REV

ES0154-75990800-CAL-2001 Check for Shear Shear Vu Tau v=

=

38.96 kN

Vu/bd

=

pt provided

=

0.251

=

0.37

>

0.31 mm

Tau c

0.31 N/mm^2

SAFE

SLAB RESULT: Provided slab thickness 150 mm Bottom Reinforcement Provide 10 mm dia reinforcement at 250 mm c/c along shorter direction as a main reinforcement Provide 10 mm dia reinforcement at 250 mm c/c along longer direction as a main reinforcement Support Reinforcement Provide 10 mm dia reinforcement at 200 mm c/c along shorter direction as a support reinforcement Provide 10 mm dia reinforcement at 200 mm c/c along longer direction as a support reinforcement