3% of the total project cost, stronger edge metal is the single most cost-effective enhancement for wind uplift on a commercial roof.
Source: FM Approved Product News Vol. 21 No. 2 2005 Source: ANSI/SPRI/FM 4435/ES-1 Wind Design Standard for Edge Systems Used with Low Slope Roofing Systems.
ANSI/SPRI/FM 4435/ES-1 is a test standard developed to determine an edge metal system’s resistance to wind pressure.
Establishes minimum acceptable criteria for edge metal performance against wind events.
Based on ASCE-7 design loads for buildings & other structures.
Pressures are reported as Horizontal (outward) and Vertical (upward) pounds/sq foot (psf).
Building Exposure (What is the geographical surroundings of the building?)
Building Category (How is the building going to be used/occupied?)
Building Height
Building Location