30-37
Research & Technology
Building Loads Imposed by Mono 
and Bi-Fold Doors
Post-frame buildings are frequently used to store 
and maintain equipment of various types. The 
size of post-frame buildings and the openings in 
those buildings have increased as the articles and 
equipment housed in post-frame structures has 
increased in size. Heated structures demanded 
doors that can be insulated and properly sealed 
to minimize heat loss. Finally, our customers are 
demanding the convenience provided by automated 
doors. Bi-fold and the newer hydraulic mono-
fold doors address the need for large, insulated, 
automated doors in post-frame structures.
4 / FRAME BUILDER - VOL7 NO3
Table of Contents
8-13
Safety
10 Hidden Dangers on Every 
Construction Site and What You 
Can Do About Them
Construction sites can be dangerous places, 
with a range of hazards that can cause serious 
injuries or even fatalities. Risks like falls, 
heavy equipment accidents and electrical 
shocks threaten construction workers' safety. 
Companies that ignore safety regulations can 
face hefty fines.
TABLE OF CONTENTS
THE OFFICIAL NFBA MAGAZINE

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