Attic Truss -do they add to building height?

[deepstuff]

Do attic trusses add anything to height of building or exterior wall height? As in when calculating height of building for permits or are they the same as ordinary trusses?

 

[tyjoja]

whatever the trusses add won't matter. I've never had an inspector measure. I'm not a pro, but have built and had inspected several shops/garages built for my self. I always like to make them as high as I can, so I start measuring on top of the footing. So my 8' walled garage is actually closer to 9'.

 

[arielnh56]

I'm researching the same thing (attic space) here (Livermore, CA) and the thing I found I might run into with some roof configs is how it relates to the setback. They calculate this here with a 45 degree line running up from a point 6 feet high and 3 feet back. So a regular gable roof with a 12/12 pitch or less makes no difference as the top of the wall hits the line first, but a mansard (barn?) type roof is steeper than 45 degree for the first part, so would push the building further from the line to meet code.

Height-wise here they measure from the "pre-existing grade". Check your local city codes online.

 

[csp]

Your plans should specify the wall height and roof pitch.

Whether the trusses are attic trusses or other should have no impact on either one unless you change one or the other to get more space under your trusses.

Every case is going to be different, but to generalize that attic trusses define pitch or wall height would be incorrect.

 

[matt_i]

If you want a "storage truss" as opposed to a simple roof-supporting truss with no consideration to inside access, then you are probably into a 6/8 in 12 pitch to take much advantage of it. Obviously if you have a 50 foot wide span then the internal height will be significantly larger than a 25' span. A storage truss will also have heavier framing members to make up for the lack of easy internal triangulation. However this space is taken internally.

 

[DonPowers]

The link shows several different styles of truss. Once you pick a style, talk to one of the designers or engineers at your local truss fabricator. They can tell you what options are available to meet local building codes and can provide the necessary prints needed to obtain a permit. I got my trusses at Aroostook Trusses and there was no charge for the prints.


http://www.aroostooktrusses.com/truss-types-a-styles.html

 

[deepstuff]

I'm still in the planning stage so no pictures yet. SOON.

 

[BMW Rider]

The bottom chord of an attic truss is going to be larger and thus it may add to the heel depth of the truss. Otherwise, there should be no other height gain if all things are equal.