HomeMy WebLinkAboutAPPROVED 07-2020 Radco approval letter for steps received 6-8-2020. (1)RE: Review ATI
test
report on
fiberglass coated plywood
steps for
compliance
with
the most
recent code versions
Dear Mr. Johnson:
We have received the test report you submitted from Architectural Testing (ATI), York, PA. The details
are as follows:
Report number: 01-37911.04, dated 11/7/03
Title: Step Performance Test Report
Products covered: 4-Tread, Dura-Grip II, Step Unit [A five riser, four tread step fabricated with
pressure treated lumber and fiberglass].
At your request, we have evaluated the test report against the building codes outlined below.
CODE
2015 International Building Code (IBC)
Stairway
Dimension
Requirement
Tested Value (2)
Compliance
Width
(1)
36" minimum
38"
Pass (1)
Riser
Height
7" maximum, 4" minimum
7"
Pass
Tread
Depth
11" minimum
11-1/2"
Pass
Tread
Leading
Edge Radius
9/16" maximum
Less than 1/2"
Pass
CODE
2015 International
Residential Code (IRC)
Stairway
Dimension
Requirement
Tested Value (2)
Compliance
Width
3611minimum
38"
Pass
Riser
Height
7-3/4" maximum
7"
Pass
Tread
Depth
10" minimum
11-1/2"
Pass
Tread
Leading
Edge Radius
9/16" maximum
Less than 1/2"
Pass
Mr. Marty Johnson
Style Crest Inc.
March 235 2018
Page 2
CODE
2017 Florida Building Code (FBC)
Stairway Dimension
Requirement
Tested Value (2)
Compliance
Width
36" minimum
38"
Pass (1)
Riser Height
7" maximum, 4" minimum
7"
Pass
Tread Depth
11" minimum
11-1/2"
Pass
Tread Leading Edge Radius
9/16" maximum
Less than 1/2"
Pass
Notes: (1) 44" minimum or 36" if serving an occupant load less than 50.
(2) The tested values have been taken from the referenced ATI test report, RADCO
has not independently verified any of the actual dimensions, and is not responsible for
the accuracy of these dimensions.
CONCLUSION:
There have either been no changes in the dimensional requirements in the IBC, IRC and the FBC or,
as in the case of the Tread Leading Edge Radius, the requirements have been altered minimally, when
compared to the requirements listed in the referenced ATI test report number 01-37911.04, dated
11/7/03. The product is therefore in compliance with the dimensional requirements of the editions of
the IBC, IRC and the FBC referenced above for the four (4) dimensions shown in the tables.
st that this proposal has been responsive to your objectives. Please do not hesitate to call if you have
any questions. As always, we look forward to working with Style Crest and to starting this program in
the near future. This proposal is valid for 90 days.
Sincerely,
RADCO
Fernando Ardila, Director
Testing Laboratories &Materials Evaluation
R:\Test Projects\Stylecrest or RMC\C4160A\style crest cotle verifcafion5.wptl