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