While the 1/3 stress increase is all but a memory, this article explains its history & origin. The one-third stress increase has a long history of use in Allowable Stress Design (ASD). It is most commonly used to account for the improbability of two transient loads concurrently acting at their maximum lifetime values– for example, …
The One-Third (1/3) Stress Increase: Where Is It Now? Read More »
Regarding ASCE 7-16 & the 2020 Florida Building Code (FBC) Also Applies for ASCE 7-22 & 2023 Florida Building Code (8th Edition) YES. Section 1609.1.1 and Chapter 35 of the 2020 FBC refer to ASCE 7-16 as the governing code for loading requirements on most rooftop structures*. *Section 1609.5 of the 2020 FBC lays …
What’s The Difference Between ASD & LRFD Design? Put in layman’s terms, think of a wood plank designed to stretch between two supports. You’re going to walk across the piece of wood. The person that designed that plank needed to figure out if it will hold you. They had two options when designing: 1) Reduce …
