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Beam Design IS13920

Published on May 2016 | Categories: Documents | Downloads: 10 | Comments: 0
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Content

Job No.
General Data

New Beam
Ult BM & SF

DESIGN OF RECTANGULAR BEAM (Limit State Method)

68VC
fck

30

N/mm2

Width

300

mm

-1325.0

KN-m

Critical Shear
709.6

KN

fy

415

Depth

900
710.0

Mixed dia bars
Bottom Reinf.
Reinf. (Strength)
Reinf. (Critical)
Trials
Same dia bars

cm2
cm2

2.04%
2.04%

Dia 1

Nos.

Dia 2

25

11

28

9

16.13
16.13

cm2
cm2

0.64%
0.64%

Dia 1

Nos.

Dia 2

16

9

Shear
Section capacity
Reqd. stirrup cap.

20

-354.0

m

Nos.

cm2
cm2

0.00%
0.00%

Dia 1

Nos.

Dia 2

Critical Ductile

KN-m

Nos.

Nos.

27.39
27.39

cm2
cm2

1.08%
1.08%

Dia 1

Nos.

Dia 2

20

9

Nos.

fy (N/mm2)

Legs

Dia
(mm)

Spacing
(mm)

Guide (fy 250)
Guide (fy 415)

250
415

2
2

6
8

Trials

415

4

8

cm2
cm2

0.49%
0.49%

Dia 1

Nos.

Dia 2

20

4

fy
(N/mm
2)

Legs

Dia (mm)

Spacing
(mm)

21
62

250
415

2
2

6
8

35
102

124

415

4

8

204

425 KN

0.00
0.00

cm2
cm2

0.00%
0.00%

Dia 1

Nos.

Dia 2

16

0

+

Check for Shear at Int Location

KN

709.6

KN

Nos.

+

160
KN

20.0

12.45
12.45

+

-1

Shear

Section adequate
Singly Reinforced Section

+

215.11
494.52

Stirrups

10

mm

FB1-3

Right Support

0.00
0.00

+

Mixed dia bars

KN

Section adequate
Singly Reinforced Section

51.67
51.67

+

614.0

KN-m

55.00

Midspan

Section adequate
Doubly Reinforced Section

Trials
Same dia bars

Length

1.2(DL+LL)

Left Support

Bending
Top Reinf.
Reinf. (Strength)
Reinf. (Critical)

Cover to center

N/mm2

Beam

Nos.

Notes
1. Cells w ith yellow fill are for data input.
2. Data should be entered in specified units only.

Stepsforuse

1. EnterGeneral data:fck,fy, covertocenterofbars,beamwidth&beamdepth
2. EnterultimateBMandSFvaluesatleftsupport,midspanandrightsupport
3. Topandbottomreinforcementrequiredfromthestrengthconsiderationsaswell
ascritical reinforcement aredisplayed. Taketrialswithsamediaoramixoftwo
differentdiaof bars.
4. Guidelinevaluesaredisplayedfor2LDia6and2LTor8stirrups.Taketrialswith
differentfy,no. oflegsanddia.
5. Redesignwithrevisedbeamsizeandreinforcementgrade,if necessary.
6. Toproceedtothenextbeam,click“NewBeam”buttonandrepeattheabove
steps.
Sign Convention
Input

Convention

Ultimate BM

+ve

Ultimate SF

+ve

Description
Sagging +ve,

Hogging -ve

beamdepth
support
ationsaswell
ramixoftwo
aketrialswith
sary.
theabove

tion

ogging -ve

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