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Participating Area (5.10.5 & 5.10.6) Vs Design Effective Area ( (e))

Participating Area (5.10.5 & 5.10.6) Vs Design Effective Area ( (e))

Participating Area (5.10.5 & 5.10.6) Vs Design Effective Area ( (e))

As per ( (e)), for Self-Supporting Roofs FULFILLED conditions in 5.10.5 & 5.10.6 (Participating Area for Figure-F-2 selected detail ≥ (p D2 ÷ 8 Fa tanθ));
(1) On that case, is that mean, the Top Curb Angle IS NO LONGER REQUIRED?
(2) Participating Area (referred in 5.10.5 & 5.10.6) is the same as Design Effective Area (cross-hatched section) (referred in (e)).
(3) Attachment (Angle) Participating Area calculated in 5.10.5 & 5.10.6 as shown in Figure F-2 (e.g; Detail “g”, Area = ta * (2Le + 2b – 2ta), where b is stiffened angle length), while Design Effective Provided Area in ( (e)), calculated in conventional way (a + b – ta) * ta)? Am I wrong?
(4) ts (referred in Figure F-2) specified as thick of the thickened plate in the shell; is that mean the thicker of all shell courses & attachment?
(5) All above calculations made in CORRODED Condition?
(6) The Area Limitation referred in (a)(6) is Design Effective Provided Area calculated in ( (e)) if Curb Angle is used, while it should be Participating Area if Top W.G is used?

Mohd Yaseen

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