4 posts
AS 3600 lets you establish a fire resistance period from the Section 5 tables or by calculation. We ran the same column through both at FRL 120, 180 and 240 to find out when calculating pays for itself.
Sign errors do not crash anything. They produce a plausible number with the wrong sense, and they survive review. So we fixed the convention once, platform-wide.
Most section tools approximate an arc with a polygon and quietly inherit the error. GCS integrates the arc, and reserves faceting for the places that genuinely need it.
Structural software is judged on the numbers it prints. We think it should be judged on the numbers it refuses to print.
