Technical Specifications
215
Deck & Fences
© 2015 MiTek. All rights reserved.
Typical SCA9-TZ
installation
SCA9-TZ
Typical SCA10-TZ
installation
SCA Stair Angles
Deck & Fences
Stair angles simplify stair construction. There is no need to
calculate and notch stair stringers. Stronger and safer than
wood blocking, and the angle and fasteners are hidden
from view.
Materials: 12 gauge
Finish: G-185 galvanizing
Codes: See page 11 for Code Reference Chart
Installation:
• Use all specied fasteners. See Product Notes, page 17.
• Use the SCA9-TZ for single 2x10 stair treads. Use the
SCA10-TZ for double 2 x 6 stair treads.
• To calculate stair construction do the following:
1. Find the number of steps needed by taking the vertical drop
from the deck surface to grade. Divide by 7. Round off to
the nearest whole number. (Ex: Vertical drop of 39" divided
by 7 equals 5.57" rounded off is 6")
2. Find the step rise by dividing the vertical drop by the
number of steps (39" divided by 6 = 6.5")
3. Find the step run by measuring the depth of your tread
board (Ex: (2) 2x6s have a run of 11-1⁄4")
4. Find the stairway span by multiplying the run by the number
of treads minus one (Ex: 11-1⁄4" x 5 = 56-1⁄4")
• Using the above calculations, mark stair angle locations on each
stringer. Attach a stair angle to the inside of each stringer at the
marked locations. Attach stringers to deck rim joist and railing
posts. Position treadboards on angles and fasten from below.
Ref. No. Qty Lag Screws 100%
SCA9-TZ TA9Z 12 9 6 1/4" x 1-1/2" HDG 335
SCA10-TZ TA10Z 12 10 8 1/4" x 1-1/2" HDG 450
1) Loads assume rise over run of 7/11.
New products or updated product information are designated in
blue font
.
Fastener Schedule
2
15, R14,
F8
Code
Ref.
USP
Stock No.
Steel
Gauge
L
(in)
Corrosion
Finish
DF/SP
Allowable
Download (Lbs.)
1
Corrosion Finish
Stainless Steel Gold Coat
HDG Triple Zinc
Corrosion Finish Stainless Steel Gold Coat HDG Triple Zinc
Corrosion
Finish
Stainless Steel
Gold Coat
HDG
Triple Zinc
L
1-3/8"
1-3/8"