SOLID, CLEAR SPAN ROOF SYSTEM

The Big Bin series boasts an immense 13’ 4” diameter deck with easily accessible catwalk attachment points. The fill opening can easily accommodate up to 4’ diameter spouting for maximum flexibility in choosing your fill equipment.

This series offers an enormous, clear span roof system designed for strong winds, snow loads, temperature cables and high volume filling equipment. The 30 roof allows for optimum filling, and the huge deck at the peak easily accepts today’s ever larger catwalks
and high capacity filling equipment.

The deep continuous rafters, up to 11” deep, from eave to peak provide a strong framework for roof loads. The compression beams, tension pipes, and zee-spreaders supplement the rafters to develop maxmum load carrying capacity. This roof system is capable of supporting uniform loads of 50,000 lbs. at the peak and 40 lbs. per sq. ft. ground snow load.

   

 

The use of large diameter structural pipe with welded endplates at the eave brings all of the major components of the bin together. These massive pipes
(up to 4-1/2" diameter) connect the rafters to the wall panels and stiffeners for outstanding strength at this critical location. This full circle ring at the eave stabilizes the roof and walls under all loading conditions and provides unmatched strength in both tension and compression situations, and provides support of non-uniform loads created by snow drifts, side draw systems, high winds and earthquake forces.

INNOVATIVE ROOF DESIGN

The Behlen roof is supplied with many exclusive features that work together to provide a strong system that keeps the weather out and grain secure. This system uses a "standing seam" panel to elevate the roof fasteners above the roof valley, reducing the potential for leaks. The 3-1/2" tall, four step ribs provide additional strength, and are roll formed for a precise fit.

The roof panels are attached to the roof skeleton with standing seam roof straps (below) minimizing penetrations in the valley and creating a more weathertight roof. The roof panels are rigidized (right) across the entire width to produce a more rigid panel for longer life. The roof panels attach at the eave. This Behlen feature prevents roof panels from tearing loose in high wind conditions.