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SLAB

The document provides a detailed design analysis for a one-way slab by MIDAS Information Technology Co., Ltd, including material specifications, design loads, and section sizes. It outlines calculations for moment and shear capacities, rebar ratios, and checks for slab thickness and load capacity. The results indicate that the slab meets the required criteria for thickness and structural capacity based on the ACI318M-19 code.

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Adrian lloyd Apostol
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4 views3 pages

SLAB

The document provides a detailed design analysis for a one-way slab by MIDAS Information Technology Co., Ltd, including material specifications, design loads, and section sizes. It outlines calculations for moment and shear capacities, rebar ratios, and checks for slab thickness and load capacity. The results indicate that the slab meets the required criteria for thickness and structural capacity based on the ACI318M-19 code.

Uploaded by

Adrian lloyd Apostol
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as RTF, PDF, TXT or read online on Scribd
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MIDAS Information Technology Co.

, Ltd

■ MEMBER NAME : SLAB

1. General Information
(1) Design Code : ACI318M-19
(2) Code Unit : N, mm

2. Material
(1) F'c : 24.00MPa
(2) Fy : 415MPa

y
x
Lx/4
Lx
Lx/2
Lx/4

X1 X2 X3

3. Design Load
(1) Dead Load : 3.100KPa
(2) Live Load : 4.800KPa

4. Section Size
(1) Span : 3.200m
(2) Thickness : 150mm
(3) Cover : 50.00mm

5. Slab Type & Support


(1) Slab Type : 1-Way Slab
(2) Support Type : Case-2

6. Calculation Summary
(1) Check Thickness of Slab
Category Value Criteria Ratio Note
Minimum Thickness Required ( mm ) 150 113 0.756 L / 28.00
(2) Calculate Moment & Shear
Category Value Criteria Ratio Note
Moment Capacity ( Top ) ( kN·m ) 10.61 11.99 0.885
Moment Capacity ( Middle ) ( kN·m ) 7.296 11.99 0.609
Moment Capacity ( Bottom ) ( kN·m ) 10.61 11.99 0.885
Rebar Ratio ( Top ) 0.00351 0.00180 0.513

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MIDAS Information Technology Co., Ltd

Rebar Ratio ( Middle ) 0.00234 0.00180 0.769


Rebar Ratio ( Bottom ) 0.00351 0.00180 0.513
Shear Capacity ( Top ) ( kN ) 18.24 59.34 0.307
Shear Capacity ( Middle ) ( kN ) 0.000 59.34 0.000
Shear Capacity ( Bottom ) ( kN ) 18.24 59.34 0.307
(3) Check rebar space
Category Value Criteria Ratio Note
Rebar Space ( Top ) ( mm ) 225 260 0.867 sbar / sbar.req
Rebar Space ( Middle ) ( mm ) 225 260 0.867 sbar / sbar.req
Rebar Space ( Bottom ) ( mm ) 225 260 0.867 sbar / sbar.req

7. Check Load
(1) Calculate factored load
ㆍ LCB01 = 4.340KPa ( 1.4D )
ㆍ LCB02 = 11.40KPa ( 1.2D+1.6L )
ㆍ ωu = 11.40KPa

8. Check Thickness of Slab


Calculation Summary ( Check Thickness of Slab )
Category Value Criteria Ratio Note
Minimum Thickness Required ( mm ) 150 113 0.756 L / 28.00
Minimum Thickness Required 0.76

0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50
(1) Calculate minimum thickness required
ㆍ hfact = 0.4 + fy / 700 = 0.993
ㆍ hcalc = L / 28.00 = 114mm
ㆍ hreq = hfact hcalc = 113mm
ㆍ h = 150mm > hreq = 113mm → O.K

9. Check Capacity of Slab


(1) Calculate Moment & Shear
Calculation Summary ( Calculate Moment & Shear )
Category Value Criteria Ratio Note
Moment Capacity ( Top ) ( kN·m ) 10.61 11.99 0.885
Moment Capacity ( Middle ) ( kN·m ) 7.296 11.99 0.609
Moment Capacity ( Bottom ) ( kN·m ) 10.61 11.99 0.885
Rebar Ratio ( Top ) 0.00351 0.00180 0.513
Rebar Ratio ( Middle ) 0.00234 0.00180 0.769
Rebar Ratio ( Bottom ) 0.00351 0.00180 0.513
Shear Capacity ( Top ) ( kN ) 18.24 59.34 0.307
Shear Capacity ( Middle ) ( kN ) 0.000 59.34 0.000
Shear Capacity ( Bottom ) ( kN ) 18.24 59.34 0.307
Moment Capacity ( Top ) 0.89

Moment Capacity ( Middle ) 0.61

Moment Capacity ( Bottom ) 0.89

Rebar Ratio ( Top ) 0.51

Rebar Ratio ( Middle ) 0.77

Rebar Ratio ( Bottom ) 0.51

Shear Capacity ( Top ) 0.31

Shear Capacity ( Middle ) 0.00

Shear Capacity ( Bottom ) 0.31

0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50
Calculation Summary ( Check rebar space )
Category Value Criteria Ratio Note
Rebar Space ( Top ) ( mm ) 225 260 0.867 sbar / sbar.req

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MIDAS Information Technology Co., Ltd

Rebar Space ( Middle ) ( mm ) 225 260 0.867 sbar / sbar.req


Rebar Space ( Bottom ) ( mm ) 225 260 0.867 sbar / sbar.req
Rebar Space ( Top ) 0.87

Rebar Space ( Middle ) 0.87

Rebar Space ( Bottom ) 0.87

0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50
Check Items TOP MIDDLE BOTTOM
Bar-1 P10@450 - P10@450
Bar-2 P10@450 P10@450 P10@450
Bar-3 P10@450 P10@450 P10@450
Moment Coefficient 0.0909 0.0625 0.0909
Shear Coefficient 0.500 0.000 0.500
Mu ( kN·m/m ) 10.61 7.296 10.61
Vu ( kN/m ) 18.24 0.000 18.24
øMn ( kN·m/m ) 11.99 11.99 11.99
øVn ( kN/m ) 59.34 59.34 59.34
Mu / øMn 0.885 0.609 0.885
Vu / øVn 0.307 0.000 0.307
ρmin / ρ 0.513 0.769 0.513
sbar.req ( mm ) 260 260 260
sbar / sbar.req 0.867 0.867 0.867

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