RAM Concept Help

Accident

  • Strength calculations in accordance with code sections 2.4.3.2, 2.4.4.2 and TR 43 section 6.10.4 are performed if appropriate.
  • Unbonded post-tensioning tendons are assumed to have zero stress.
  • The reinforcement type (as defined in the design section or design strip segment) is considered (PT or RC).
  • The stress levels in the structure are determined by the moment envelope for the rule set (failure could occur on both faces).
  • Reduced γ m factors are used in the strength calculations. For concrete in flexure, γ m = 1.3 and for reinforcement, γ m = 1.0. Note that for shear reinforcement calculations, the "0.95fyv" (Amendment 1 and 2) or "0.87fyv" (Amendment 3) values are changed to "1.0fyv".
  • Code Rules are applied as shown in the following table.
Table 1. Accident rule mapping
Design System RC PT
Beam (none)

4.3.7

4.3.8

4.3.9* (reduced γ m )

One-Way Slab (none)

4.3.7

4.3.8

4.3.9* (reduced γ m )

Two-Way Slab (none) (none)
Note: * - 4.3.9 is applied only if "beam" torsion is selected (see torsion design notes)