I am pretty sure if you look a the TJI specifications for holes and
notching you have just about zero options when it comes to using them to
resist an array's uplift. Blocking is about the only option unless you
use the attachment method that secures each module to the roof's plywood
sheathing. Chris
On 2018-03-02 23:53, Glenn Burt wrote:
> We have had to install blocking between TJI beams and anchor to them.
> Piercing the top member was a no-no.
>
> _Glenn_
> _Sent from my 'smart' phone so please excuse spelling and typographical
> errors._
>
> ------ Original message------
> FROM: frenergy
> DATE: Fri, Mar 2, 2018 9:18 PM
> TO: re-wrenches@lists.re-wrenches.org;
> CC:
> SUBJECT:Re: [RE-wrenches] TJI rafters
>
> Jerry,
>
> Metal roof? comp? tile?
>
> Bill
> On 3/2/2018 1:23 PM, Jerry Caldwell wrote:
>
>> Dear Wrenches,
>>
>> I have a customer with a low slope roof supported by TJI beams. Does anyone
>> have experience permitting and installing on TJIs? I'm curious if
>> jurisdictions are requiring Structural Engineer stamps.
>>
>> Since the top chord of the beams is only 1 3/8" thick should we be using
>> shorter lag bolts for these installations? It also seems that it would be
>> undesirable to penetrate into the web of the beam.
>>
>> Any advice would be appreciated here.
>>
>> Thank you,
>>
>> Jerry Caldwell
>>
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> --
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