Barrette BOM-34107467 Instrucciones De Instalación página 5

Stair Installation
Building codes are speci c to angles, steepness and dimensions of stair installations. Typical stair
angles are usually 32 degrees (7" rise and 11" run). Check with your local building code of cial as you
plan your stair layout. Pay particularly close attention to angle cuts to ensure a tight t. Pro Rail stair
brackets work only with a stair slope from 26 degrees to 38 degrees, optimal at 32 degrees. Pro Rail
stair kits top and bottom rails are routed to allow installations up to 32 degrees. A stair installation
beyond 32 degrees will require additional routing of the rails by the installer.
1.
Installing Post Jackets and Base Trim
Over 4x4 Wood Posts:
a. Trim Stair Post Jacket to desired length.
In most cases, the stair post and stair Post
Jacket will need to be longer than posts on
the deck on the lower side of the stair rail
section to accommodate stair angles. (41" is
recommended for a typical 36" rail height and
32 degree stair angle) (Fig. 1).
b. Make sure the top and bottom posts for stairs
are installed so the base trims are installed at
the nose of each tread.
c. Slide Post Jacket and base trim over wood 4 x 4.
Plastic post spacers are included in 5 x 5 Pro
Rail Post Jackets and t tight over 4 x 4 wood
post.
OR
Installing Post Jackets and Base Trim
with Post Install Kit:
Slide post sleeve and base trim over steel Post
Install Kit (sold separately) - See separate post
install kit instructions for details.
2.
Temporary Spacers:
Place a temporary spacer board (
board) on top of stair noses for proper spacing
underneath rails (Fig. 2).
3.
Mark Rails:
Set bottom rail on top of temporary spacer board
making sure to leave equivalent space on both
ends from post to rst routed hole for balusters.
Clamp to posts.
Mark angled line on bottom rail at intersection of
rail and posts (Fig. 3).
Assuming posts are plumb, align top rail with
bottom rail and cut both rails at the marked angles
and lengths. Like the bottom rail, be sure to leave
equivalent space on both ends of top rail from
post to rst routed hole.
Prior to cutting rails: Ensure proper t by cutting
a test piece of wood to the previously determined
length and angle to t into the opening between
the posts.
⁄ ⁄ " deck ⁄ ⁄
5 5 5
4 4
Fig. 1
Fig. 2
Fig. 3
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