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Stiar8

The document outlines the design calculations for a stair structure, including input data such as material strengths and dimensions. It details the loads on the landing and flight, shear strength, and required reinforcement areas. The final reinforcement specification indicates the use of 4.00 F 12 bars for the design.

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Mamdouh Nour
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17 views1 page

Stiar8

The document outlines the design calculations for a stair structure, including input data such as material strengths and dimensions. It details the loads on the landing and flight, shear strength, and required reinforcement areas. The final reinforcement specification indicates the use of 4.00 F 12 bars for the design.

Uploaded by

Mamdouh Nour
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLS, PDF, TXT or read online on Scribd
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1^st design stair

INPUT DATA:
fcu= 250 kg/cm²
fy= 3500 kg/cm²
R .15 m.
S .27 m.
H .25 m.
Cover .025 m.
W 1.07 m.
L1 .27 m.
L2 1.89 m.
L3 1.2 m.
Live load 0.30 t/m²
Dead Load .15 t/m²

1- Loads

Wu (Landing) = (1.4* OwL + 1.4*DL + 1.6 * LL) * W


Wu (Landing) = 1.675 t/m
Wu (Flight) = (1.4 * OwF /cosf + 1.4*DL / cosf + 1.6 * LL) * W
Wu (Flight) = 2.163 t/m

2- Flight

R1= 3.147 ton


R2 = 3.403 ton
X_Zero shear 1.634 m.
Mumax 2.870 m.t

3- Shear stength

9.7980 kg/cm²

qu = Qu/ b*d 1.4520 kg/cm²

4- Reinforcement

As min.= 4.0171 cm²


As = 4.4200 cm²

5- Details

As 4.00 F 12

1/1

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