Use and Care Manual
301
Deck & Fences
Copyright © 2020 MiTek Industries, Inc. All Rights Reserved
Deck & Fences
MiTek
®
Product Catalog
Typical SCA9-TZ
installation
SCA9-TZ
Typical SCA10-TZ
installation
SCA Stair Angles
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
Options: See chart for Corrosion Finish Options
Codes: IBC, FL, LA
Installation:
• Use all specied fasteners. See Product Notes, page 18.
• MiTek WS15-EXT (1/4" dia. x 1-1/2" long) structural wood
screws are not supplied with SCA angles.
• 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 dividing the vertical
drop in inches from the deck surface to grade 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 with 1/4" gap will 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 Type Download 100%
SCA9-TZ TA9Z 12 9 6 WS15-EXT
445
SCA10-TZ TA10Z 12 10 8 WS15-EXT
595
1) Loads assume rise over run of 7/11.
2) MiTek's WS15-EXT structural wood screws are 1/4" dia. x 1-1/2" long and are not included with SCA angles.
3) HDG lag screws may be substituted for specified WS15-EXT structural wood screws with no load reduction.
New products or updated product information are designated in
blue font
.
IBC,
FL, LA
Code
Ref.
MiTek USP
Stock No.
Steel
Gauge
L
(in)
Corrosion
Finish
DF/SP
Allowable Loads (Lbs.)
1
Fastener Schedule
2,3
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"