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07 - Slab Design

This document provides design parameters and results for the reinforcement design of a two-way slab with a length of 5 meters, width of 3.5 meters, and minimum thickness of 100 mm. The slab has a concrete compressive strength of 20.7 MPa and yield strength of reinforcing steel of 228 MPa. Based on the calculated moments and shear, the program recommends 10 mm diameter reinforcing bars at 250 mm spacing for the bottom main bars and 10 mm bars at 150 mm spacing for the top main bars. These are determined to provide adequate reinforcement for the slab.

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Joseph Cloyd L. Lamberte
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676 views1 page

07 - Slab Design

This document provides design parameters and results for the reinforcement design of a two-way slab with a length of 5 meters, width of 3.5 meters, and minimum thickness of 100 mm. The slab has a concrete compressive strength of 20.7 MPa and yield strength of reinforcing steel of 228 MPa. Based on the calculated moments and shear, the program recommends 10 mm diameter reinforcing bars at 250 mm spacing for the bottom main bars and 10 mm bars at 150 mm spacing for the top main bars. These are determined to provide adequate reinforcement for the slab.

Uploaded by

Joseph Cloyd L. Lamberte
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Slab No.

: S-1
VERSION: 2.2.0
5.00 m
3.50 m 4
20.70 MPa
228.00 MPa 0. 081 0. 046
1.92 kN/m 0. 019 0. 011
6.05 kN/m
No Yes/No? 0. 810 0. 057
Yes Yes/No? 0. 190 0. 014
94 mm
100 mm Ms = 6. 50932 kN.m Ms = 1. 857 kN.m
2.35 kN/m Mb = 7. 13933 kN.m Mb = 3. 236 kN.m
6.56 kN/m
15.03 kN/m Ms
T
= 4. 136 kN.m Ms = 2. 279 kN.m
0. 70 Mb
T
= 4. 378 kN.m Mb = 1. 1424 kN.m
w = w =
p = p =
Steel Requirement: Steel Requirement:
As = 275.35 mm
2
As = 439.71 mm
2
Spacing = 750 mm
bar size = 10 mm bar size = 10 mm ACI Code = 450 mm
bar area = 79 mm
2
bar area = 79 mm
2
0.002bt Temp. = 393 mm
Spacing = 285 mm Spacing = 179 mm Rec'd = 393 mm
SAY = 250 mm SAY = 150 mm SAY = 300 mm
w = w =
p = p =
Steel Requirement: Steel Requirement:
As = 313.95 mm
2
As = 522.36 mm
2
Spacing = 750 mm
bar size = 10 mm bar size = 10 mm ACI Code = 450 mm
bar area = 79 mm
2
bar area = 79 mm
2
0.002bt Temp. = 393 mm
Spacing = 250 mm Spacing = 150 mm Rec'd = 393 mm
SAY = 250 mm SAY = 150 mm SAY = 300 mm
Program Created by: JOSEPH CLOYD L. LAMBERTE, MSCE, PICE, SEAD Program Licensed to:
USE 10 mm dia. @ 500 mm O.C. Bottom Temp. Bars
Engr. Joseph Cloyd L. Lamberte 5 M. LONG SPAN
USE 10mm @ 250mm
O.C. Main Bottom Bars
USE 10mm @ 250mm
O.C. Main Bottom Bars
USE 10 mm dia. @ 150
mm O.C. Top Main Bars
Aug/28/2013 1:28 PM
USE 10 mm dia. @
500mm O.C. Bottom
Temp. Bars
0.0646
ADEQUATE
USE 10 mm dia. @ 150mm O.C. Top Main Bars for Top Cont. Edge
Recommendation:
ADEQUATE ADEQUATE ADEQUATE
0.0822
USE 10 mm dia. @ max. of 450mm spacing Temp Bars
Use 3 times the spacing of Midspan(i.e. the
moment is only 1/3 of the midspan moment)
3
.
5

M
.

S
H
O
R
T

S
P
A
N
0.0045
Midspan:
Along Long Span Direction:
ADEQUATE
0.0075
ADEQUATE
Discontinuous Edge:
0.0494
Continuous Edge:
Dimension ratio, m =
Continuous Edge: Midspan:
Use 3 times the spacing of Midspan(i.e. the
moment is only 1/3 of the midspan moment)
0.0059
0.0404
Discontinuous Edge:
0.0037
Total LS. Wt., w
L
=
Along Short Span Direction:
Slab Moments:
Negative Moment: Dead Load Positive Moment:
Dead Load Moment coef.: Negative Moment coef.:
Slab Coef for Case:
Shear Coefficients:
Pos Cb =
CaseNo. [1-2-3-4-5-6-7-8-9]
Total SS.Wt., w
s
=
Minimum Thickness of Slab:
Slab Dead Load =
DESIGN OF TWO-WAY SLAB
Length =
Live Load Moment coef.:
Neg Cs =
fc' =
Design Parameters:
Wb =
Live Load Positive Moment:
Wall Dead Load =
USE Thickness, t =
t =
Wall along Length? = Pos Cs =
Total Positive Moment:
Ws =
Wall along Width? =
DESIGN:
Pos Cs =
Pos Cb =
Width =
Neg Cb = Imposed Live Load =
fy =
4
No
Yes

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