D14.A.3 Beam Design
Beam design includes flexure, shear and torsion. For all types of beam action, all active beam loadings are scanned to create moment and shear envelopes and locate the critical sections. The total number of sections considered is thirteen. From the critical moment values, the required positive and negative bar pattern is developed. Design for flexure is carried out as per clause no. 4.3.3.4.
Shear design as per SABS 0100 clause 4.3.4 has been followed and the procedure includes computation of critical shear values. From these values, stirrup sizes are calculated with proper spacing. If torsion is present, the program will also consider the provisions of SABS 0100 clause 4.3.5. Torsional reinforcement is separately reported.
A TRACK 2 design output is presented below.
============================================================================
B E A M N O. 4 D E S I G N R E S U L T S
M30 Fe450 (Main) Fe450 (Sec.)
LENGTH: 6000.0 mm SIZE: 715.0 mm X 380.0 mm COVER: 40.0 mm
DESIGN LOAD SUMMARY (KN MET)
----------------------------------------------------------------------------
SECTION |FLEXURE (Maxm. Sagging/Hogging moments)| SHEAR
(in mm) | MZ Load Case MX Load Case | VY P Load Case
----------------------------------------------------------------------------
0.0 | 84.77 1 -9.89 1 | -28.13 4.39 1
| 0.00 0 |
500.0 | 70.70 1 -9.89 1 | -28.13 4.39 1
| 0.00 0 |
1000.0 | 56.64 1 -9.89 1 | -28.13 4.39 1
| 0.00 0 |
1500.0 | 42.57 1 -9.89 1 | -28.13 4.39 1
| 0.00 0 |
2000.0 | 28.50 1 -9.89 1 | -28.13 4.39 1
| 0.00 0 |
2500.0 | 14.43 1 -9.89 1 | -28.13 4.39 1
| 0.00 0 |
3000.0 | 0.37 1 -9.89 1 | -28.13 4.39 1
| 0.00 0 |
3500.0 | 0.00 0 -9.89 1 | -28.13 4.39 1
| -13.70 1 |
4000.0 | 0.00 0 -9.89 1 | -28.13 4.39 1
| -27.77 1 |
4500.0 | 0.00 0 -9.89 1 | -28.13 4.39 1
| -41.84 1 |
5000.0 | 0.00 0 -9.89 1 | -28.13 4.39 1
| -55.90 1 |
5500.0 | 0.00 0 -9.89 1 | -28.13 4.39 1
| -69.97 1 |
6000.0 | 0.00 0 -9.89 1 | -28.13 4.39 1
| -84.04 1 |
----------------------------------------------------------------------------
SUMMARY OF REINF. AREA FOR FLEXURE DESIGN (Sq.mm)
----------------------------------------------------------------------------
SECTION | TOP | BOTTOM | STIRRUPS
(in mm) | Reqd./Provided reinf. | Reqd./Provided reinf. | (2 legged)
----------------------------------------------------------------------------
0.0 | 543.40/ 549.78( 7-10í )| 680.71/ 706.86( 9-10í )| 8í @ 115 mm
500.0 | 543.40/ 549.78( 7-10í )| 567.75/ 603.18( 3-16í )| 8í @ 115 mm
1000.0 | 543.40/ 549.78( 7-10í )| 454.79/ 471.24( 6-10í )| 8í @ 115 mm
1500.0 | 543.40/ 549.78( 7-10í )| 353.21/ 392.70( 5-10í )| 8í @ 115 mm
2000.0 | 543.40/ 549.78( 7-10í )| 353.21/ 392.70( 5-10í )| 8í @ 115 mm
2500.0 | 543.40/ 549.78( 7-10í )| 353.21/ 392.70( 5-10í )| 8í @ 115 mm
3000.0 | 543.40/ 549.78( 7-10í )| 353.21/ 392.70( 5-10í )| 8í @ 115 mm
3500.0 | 353.21/ 392.70( 5-10í )| 543.40/ 549.78( 7-10í )| 8í @ 115 mm
4000.0 | 353.21/ 392.70( 5-10í )| 543.40/ 549.78( 7-10í )| 8í @ 115 mm
4500.0 | 353.21/ 392.70( 5-10í )| 543.40/ 549.78( 7-10í )| 8í @ 115 mm
5000.0 | 448.91/ 452.40( 4-12í )| 543.40/ 549.78( 7-10í )| 8í @ 115 mm
5500.0 | 561.87/ 565.50( 5-12í )| 543.40/ 549.78( 7-10í )| 8í @ 115 mm
6000.0 | 674.83/ 678.60( 6-12í )| 543.40/ 549.78( 7-10í )| 8í @ 115 mm
----------------------------------------------------------------------------
TORSION REINFORCEMENT : Not required