Scribd
Upload
13 views1 page

Structural Beam Design Specs

This document provides design calculations for the reinforcement of a concrete beam. It includes calculations for bending moment, shear force, reinforcement ratios and bar arrangements to ensure code compliance for strength and serviceability limits.

Uploaded by

EakJhuan
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
13 views1 page

Structural Beam Design Specs

This document provides design calculations for the reinforcement of a concrete beam. It includes calculations for bending moment, shear force, reinforcement ratios and bar arrangements to ensure code compliance for strength and serviceability limits.

Uploaded by

EakJhuan
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
You are on page 1/ 1

PROJECT ADDITION PTHO-31 BEAM NO.

B9
ND
CLIENT KYOWA HAKKO THAILAND FLOOR 2 FL
TITLE DATE
Location :
8 B
hmin (cantilever/cm) 97.14 N
Constant h min (general /cm) 48.57 End & Contin Midspan
fy ksc. 4000 h min (one end-cont / 42.01 12mm @409cm 30cm 30cm
fc' ksc 280 h min (both end cont 37.01 2-DB25 5 2-DB25 7.45

β1 ksc 0.8500
82.55
k =0.85X β1 x 6120/(6120 + fy) 0.437 90cm 81.81 90cm
m = fy /fc' 14.286 b(cm) = 30
ρmax = 0.75 ρb = 0.75k / m 0.0229 h(cm) = 90 2-DB25 7.45 3-DB25 5

ρmin = 14 /fy 0.0035 End & Contin Midspan


BENDING MOMENT Mu kg.m 0 29343
SHEAR Vu kg 16320 16320
covering(cm) = cm 5 5
Layer (Top Bar)= LEVEL 1 1
Layer (Bottom Bar)= LEVEL 1 1
d'(cm) = cm 7.45 7.45
d(cm) = cm 81.805 82.55
ρ = As /(bd) 0.0040 0.0059
ρ' = As' /(bd) 0.0040 0.0040
ρmin < ρ < ρmax YES / No ? YES YES <== Satisfactory !!
Ru = ρ x fy (1-0.59xq) ;q = ρ fy / fc' ksc 15.5 22.6
2
ΦMn = 0.9 x R ux bx d ; Φ = 0.9 kg.m 27937.4 41570.0

Mu <= ΦMn ?? ; Φ = 0.9 OK / No ? OK OK


Req for Doubly Reinforced Beams Yes / No ? No No
Provide Re- Bar Diameter ( Top - Bottom) for bending moment

COMPRESSION BAR As' cm² 9.82 9.82


TENSION BAR As cm² 9.82 14.73

Check Shear

Φ Vc = 0.53 Φ fc' bd Φ = 0.85 kg 18500.14 18668.62

2.1 Φ fc' bd kg 73302.42 73969.99

Vu- Φ Vc = kg -2180.14 -2348.62

Vu- Φ Vc <= 2.1 Φ fc' bd PASS / No? PASS PASS

Φ Vc/2 = kg 9250.07 9334.31

1.1Φ fc' bd = kg 38396.51 38746.19

fyt = yeild strength of strrirup ksc 4000 4000

Provide for spacing strriupt

Choose DIA OF STRIPRUP

Dia of strrirup mm 12 12
ST-2 = mm 409.0 412.8

ST-1(Distance from 2h form column edge; spacing not exceeds)

1/4 of Effective depth of beam mm. 204.51


8 diameter of minimum size of main bar mm. 200.00

24 time stirrup diameter mm. 288.00


300 mm mm. 300.00
0.3L 0.3L
Top Bar Top Bar
End Center End
0.75L
L Bot Bar Bot Bar

BAR ARRANGEMENT ( Use Only Deform Bar, DB = End & Cont MID
TOP BAR 25 2 2
BOTTOM BAR 25 2 3
PROVIDE DIAMETER OF STRIPRUP 409.03

You might also like