COMMUNITY FORUM

mikeozo

07:04PM | 09/24/03
Member Since: 09/23/03
22 lifetime posts
Bvroofing
I am in the process of constructing my 2 story house. The dimensions are 30x44. I am using 5/12 trusses with a 12" overhand on 16" centers and 5/8" Sheating.

We recently installed the trusses and began to install the 5/8" plywood. This is how we went about laying out. We first plumbed the gable truss and braced it in the center of the truss. We then layed out our 16" center marks from our gable end trusses to the rest of the trusses. When the trusses were in the correct spot, we installed a hurricane tie(the type that supports the truss on both sides of the truss). We then ran lateral braces across the peak and half way down the truss between the prak and the overhang. The trusses were now ready for sheating (or so we thought.)


We measured up 48" from our gable truss overhang. Then we stung a line across the entire 44' of the roof. When we began to lay the sheating on our control line, the plywood was running on an angle where the seam of the plywood lay on the truss. I could pull the truss out to make the plywood hit the truss in the center, but this seemed to bow the rest of truss.

This lead me to come to several conclusions... A- the building could be out of square, B- the wall with my beginning gable truss could be bowed in the center causing each truss after it to be bowed since they are braced to iton 16" centers. C-The hurricane ties are twisting the trusses or holding them from straightening out.

Now, We are fairly sure our building is square, or off very , very slightly. We were very careful to ensure this.

B- does not seem to be the problem because we released the braces from the gable to let free to move laterally. We then put the plywood back on the control line and it still is running off the line.

C- We noticed that some of the hurricane ties seemed to be holding the trusses out of plumb slightly on a few of the trusses. However, it doesnt seem to be a problem on the majority of the trusses.

We tried the plywood on several locations across the truss and the problem continued.

We have really been rackin our brains for the reason. I would love to have some fresh perspective and would greatly appreciate any help you can give. THANKS.

Piffin

03:11PM | 09/28/03
Member Since: 11/06/02
1281 lifetime posts
If the truss set is laid out the same on both walls, the walls are straight, and the braces for the trusses along the ridge follow the same layout as the walls, then the building is not square. Did you check the sqaure at the top plates? If the last time you checked was at bottom plates, there could easily be a wall or two slightly out of plumb enought o make this kind of difference.

rhagfo

08:20PM | 09/29/03
If the roof is a simple gable, then you could also check each side of the gable for square. Make sure the roof measures the same length at the ridge as it does at the top plate. diagonals should be equal.
Click_to_reply_button
Inspiration_banner

INSPIRATION GALLERY



Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply_choose_button

Anonymous

Post_new_button or Login_button
Register

With nothing more than a saw and some plywood, you can create your own Christmas tree cutout forest. Give the "tree" a coa... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... The Audubon Society inspired wallpaper in this Adirondack-styled entryway will get you in the outdoor mood. Grab your coat... Chalkboard paint opens up endless possibilities for customizing your dresser time and time again. Use chalk to label the c... A fireplace in the bathroom creates the ultimate setting for relaxation. Homeowners often choose electric or gas over wood... This roomy boot tray made from punched metal stands up to all the elements. Station it in your mudroom or at your back doo... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... FLOR carpet tiles are a simple and affordable way to customize a floor covering for any space. You can make anything from ... Chalkboard paint features prominently in this elegant yet unpretentious headboard design. Add a new message daily to reflec... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... The indecisive homeowner need not fret over choosing one (or even two) cabinet colors. The kitchen cabinets in this artist... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... First dress up your metal shelves with a coat of paint in an accent color that complements your kitchen decor. Then arrang... The vibrant green of Granny Smith apples make a beautifully natural alternative to the traditional evergreen wreath. Brigh...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon