>> at the shop where we are installing the we-7 the roof is less than
>> 10 y.o. built with pre fabed Modified Queen (Multi-Pannel) truss- all
>> 2x4's. Have you ever heard of anyone needing to make modifications
>> to their roof's to accomadate the we-7 system? Or do you recomend
>> that any modifications be made?
>> Thanks, Larry
What I think you are describing is a normal home truss roof that has no structural problems. That is what the system is designed to work with. Unless the structure is somehow compromised, substandard, abnormal, you just lag the system right into the rafters, centered and that's perfect.
At that point this system actually becomes a part of your roof structure and it all becomes steel reinforced in a way. So, it is my opinion that my roof stricture is much stronger with the turbines on it.
Interestingly, the three turbine system that I helped put on a barn roof this weekend DID REQUIRE to be reinforced and modified. I will post some pictures. The rafters were at... I think a 19.5" centers? Then many were WAY OFF square. So, basically three new rafters were scabbed in on each side, for each of three turbines. That was allot of work. But as the center turbine was whizzing up there Sunday, inside, very silent and stable, even on a tin roof with no ceiling or insulation.
As you can see from the next few shots, this customer's barn is a very old structure and the rafters are not at 24 inch centers and are also way out of square. So, his first BIG TASK was to scab on some square rafter underpinning at 24" centers to mount the turbines properly. On a modern home, 24" rafters or trusses are standard, but if you had a very old barn, or sometimes a industrial application, like a large metal building, you may have to look at some modifications to be sure you have proper structure to mount the turbines onto.
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