Sheet :
Cont'd :
fixed support
simply supported
1 2 3 4 5 6 7 8 9
fc' = mpa = mm =
fy = mpa = mm
= mm ratio L / B ® =
Loading : = =
=
= =
= = % As =
* + * = mm2 / m
provide Ø @ c/c
=
Prepared by : Date :Job No. :
Verified by : Revision Notes :
Project :
Subject :
Calculation sheet
Design of Two way Slab as per ACI 318-95.
case
Data : 25 slab thickness t 130 Clear Length of slab (L) 4.400 m Long span
415 cover 15 Clear Width of slab (B) 4.400 m Short span
d' -effective depth 115 1.000
Dead load (self wt of slab) 3.250 kn/m2 Load case 1
Superimposed Dead load 1.25 kn/m2 positive Span moment
Reaction(ult) on long
beam kn/mLive Load 2.00 kn/m2 Mb ult(+ve) 11.798
ultimate load = 1.5 4.500 1.5 2.000 9.750
kn.m
10.73
Total load (service) 6.500 kn/m2 rho 0.245 281
1.5 dl + 1.5 ll kn/m2 8 179
deflectiondl 3.6868 mm
Visit Abqconsultants.com
This program Designs and
Optimises Two Way Rcc Slabs.
Written and programmed by
:-
A B Quadri
www.abqconsultants.com
9959010210
9959010211
=
=
Deflection check =
thickness of slab = mm (min) = % As =
mm2 / m
as per equation 9-12 Aci 318m-95 provide Ø @ c/c
= mm (min)
Live load deflection ratio = >
=
Total load (dl+ll) deflection ratio = >
= % As =
on fixed side , top -ve reinforcement mm2 / m
Ø @ c/c provide Ø @ c/c
as per load case and fixity condition.
=
on short side , bottom reinforcement
Ø @ c/c = % As =
mm2 / m
provide Ø @ c/c
on long side , bottom reinforcement
Ø @ c/c
on fixed side , top -ve reinforcement
Ø @ c/c
as per load case and fixity condition.
mmReaction(ult) on short
beam kn/mMl ult(+ve) 11.798 kn.m
10.73
deflectiondl 3.6868 mm
ll 1.6386
281
8 179
minimum thickness123 <= 122.5316482 OK
Negative Span moment
130 > 123 OK rho 0.245
826 240 OK
rho 0.180 207
2685 360 OK
Mb ult(-ve) 0.000 kn.m
8 179 rho 0.180 207
130 thk slab
8 243 8 243
Ml ult(-ve) 0.000 kn.m
L
Prep By : A B Quadri- Abq Consultants - 9959010210 - [email protected]/2 Royal Residency, Besides Amba talkies, Mehdipatnam , Hyderabad-India. 500028-www.abqconsultants.com
B 8 243
8 179
8 243
Visit Abqconsultants.com
This program Designs and
Optimises Two Way Rcc Slabs.
Written and programmed by
:-
A B Quadri
www.abqconsultants.com
9959010210
9959010211
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