1. |
αf |
= |
Ratio of flexural stiffness of beam section to flexural stiffness of slab.
|
2. |
βt |
= |
Ratio of torsional stiffness of edge beam section to flexural stiffness of slab.
|
3. |
Φt |
= |
Strength reduction factor.
|
4. |
As |
= |
Area of Tension reinforcement required in 'sqmm'.
|
5. |
As,min |
= |
Min area of flexural reinforcement in 'sqmm'.
|
6. |
AstPrv |
= |
Area of longitudinal reinforcement provided at given section in 'sqmm'.
|
7. |
Ast |
= |
Total area of longitudinal reinforcement calculated at a given section in 'sqmm'.
|
8. |
b |
= |
Width of the Slab in 'mm'.
|
9. |
B1 to B4 |
= |
Width of beams around slab in 'mm'.
|
10. |
Cc |
= |
Effective Cover to tension reinforcement in 'mm'.
|
11. |
CA and CB |
= |
cross-sectional constant to define torsional properties of slab and beam.
|
12. |
deff |
= |
Effective depth of slab in 'mm'.
|
13. |
D1 to D4 |
= |
Depth of beams around slab.
|
14. |
Icr |
= |
Moment of Inertia of concrete crack section.
|
15. |
Ln |
= |
Length of clear span in direction that moment are being determined in 'mm'.
|
16. |
L2 |
= |
Length of adjacent span of Ln in 'mm'.
|
17. |
lb1 to lb2 |
= |
Moment of inertia of beams around slab in 'mm4'.
|
18. |
Mcr |
= |
Cracking Moment.
|
19. |
Mu |
= |
Factored Bending Moment at a section in 'kNm'.
|
20. |
Ptmin |
= |
Minimum percentage steel as per clause 10.
|
21. |
PtPrv |
= |
Provided percentage steel.
|
22. |
Vc |
= |
Nominal shear strength provided by concrete in 'kN'.
|
23. |
Vu |
= |
Factored Shear Force at a section in 'kN'.
|
24. |
Vud |
= |
Design Shear Force in 'kN'.
|
25. |
y |
= |
Neutral axis depth.
|