Need a book? Engineering books recommendations...
Re: Nails to Metal Truss[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Nails to Metal Truss
- From: Andy Richardson <chuzman(--nospam--at)gmail.com>
- Date: Fri, 31 Jul 2009 22:04:48 -0400
Good point - that may be a good retrofit option if it gets to that point...
Is it possible to add screws with neoprene washers through the metal roofing?
Andy Richardson wrote:Thanks for the input.
The problem is that there is a metal roof installed over the plywood. In order to add screws, the metal roof has to be removed!
I did not do the engineering on the existing roof. In fact, I do not think there was an engineer involved. That is why I want to be sure that before I bring this to the attention to the owner, there is no data supporting the use of these nails. I did a bit of searching, and have not seen any ICC reports or other manufacturer data.
On Fri, Jul 31, 2009 at 12:53 PM, David Topete <d.topete73(--nospam--at)gmail.com> wrote:
Like Drew mentioned, screws are the ideal fastener. If you have a 6" fastening pattern, add screws and neglect any contribution from a spiral nail that may or may not have some withdrawal resistance.--
On Fri, Jul 31, 2009 at 9:37 AM, Drew Morris <dmorris(--nospam--at)bbfm.com> wrote:
See if there is some sort of ICC report on these nails and whether they have any published withdrawal values. Screws would have been better.
Andy Richardson wrote:Has anyone heard of a valid use of 8d spiral nails for attaching 5/8" OSB to metal trusses. I am working on a porch addition to a 3-year old school where this was done on the roof. I am concerned that the nails will not be adequate for uplift. This project is in a 130 mph, exp b location. The uplift forces at the corner can be ~75 lbs per nail based on a 6" pattern.
David Topete, SE
- Prev by Subject: Re: Nails to Metal Truss
- Next by Subject: NCEES Revised SE I & II Exams
- Previous by thread: Re: Nails to Metal Truss
- Next by thread: Point supported glass