Need a book? Engineering books recommendations...
Re: Standard of Care[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Standard of Care
- From: "Bill Sherman" <SHERMANWC(--nospam--at)cdm.com>
- Date: 11 Sep 98 13:06:32 -0400
Ron Martin wrote: >In answer to the brace rods on metal buildings, I know they do not take into account any pretensioning to my knowledge. The "assumption" is that they will be installed snug-tite. < I am reviewing a submittal on a pre-engineered metal building right now. The drawings show rod bracing in the side walls; in one location the "Instruction Manual" has a note which says to "obtain the proper tension" in the bracing - but no definition of "proper tension" is given; in another location it states to "loosen and tighten the x-braces as necessary to square the frame". This is consistent with your statement that the braces are "assumed" to be installed snug tight, but no clear requirements are given. >Most metal buildings with a wall panel that has diaphragm ability are actually relying on that panel for bracing even though it was not designed that way. As long as the panels are there and not cut-up with openings, the rods are not performing in much capacity. < This is true, although it is hard getting information on diaphragm capability of metal panel systems. I am also currently reviewing another project with an existing pre-engineered metal building to determine the permissibility of removing several large portions of the siding for building modifications. I confirmed with the building manufacturer that the building was designed for lateral load to be resisted by the bracing and neglecting the siding as a shear wall. Last week a field inspection was done to confirm the existing rod bracing locations. The roof bracing was as designed, but the previous owner apparently decided to cut out all the wall rod bracing and throw them away (pieces of rod remain were they were cut). It is a good thing wall panels actually have some shear capacity!
- Prev by Subject: Re: Standard of Care
- Next by Subject: Re: Standard of Care
- Previous by thread: Re: Standard of Care
- Next by thread: Re: Standard of Care