Masonry Magazine March 2010 Page. 30
PLANKS
Masonry: What can mason contractors do to help fight problems with uncertified planking?
Warlikowski: Use the check list that we suggest, and know your supplier. (See sidebar.)
Cook: Research your vendors. Get online and lookup trade associations such as Scaffold Industry Association (SIA), MCAA, Timber Products (TP), Southern Pine Inspection Bureau (SPIB), and West Coast Lumber Inspection Bureau (WCLB). Every true, solid sawn scaffold plank comes with five mandatory markings on its stamp: third-party agency, mill name or number, scaffold plank grade, moisture content and wood species. The consumer should be vigilant and look out for fake stamps and companies that mix in uncertified lumber with certified. Believe me, they are out there.
Masonry: Is there anything else you'd like to say to our mason contractor readers?
Warlikowski: You get what you pay for. There is a good reason why you buy the mixers and hand tools that you do. You most likely had a good experience with them in the past, and they have held up as promised, or better. Buying certified planks is like buying good tires: You want good, useable service from both.
Kennison FOREST PRODUCTS, INC.
Services Available: Rod-Clip-Brand
End Painting
Precision End Trimming
The Solid Choice for Scaffold Plante
Meets OSHA/ANSI Standards
Smooth and Rough Surfaces
2x10", 2x12"
2'-16' Lengths
Call today for delivered prices to your area on partial or full loads!
ASIA
Dense Industrial 65 Solid Sawn Scafold Plank
Z-Plank Laminated Scaffold Plank
Call Our Sales Team!
1-888-697-5585
Гакс: 337-527-0412
Bob Edens
Sales, ext. 17
Jared Kennison
Sales, ext. 15
Joe Kennison
Sales, ext. 14
John Warlikowski
Western Region Sales
1-877-784-9163
www.kennisonforest.com
READER SERVICE #144
How Your Planks Should Stack Up
John Warlikowski, western sales manager and LVL product manager for Kennison Forest Products Inc., suggests the following checklist to avoid problems with uncertified planking.
Physical/Mechanical Properties:
Each scaffold plank is capable of supporting the one-person loading requirement when the plank is supported on a 10-foot span. ANSI A10.8-5.2.1
Each scaffold plank meets the OSHA capacity requirement by following provisions in paragraph 5 of ANSI A10.8 OSHA 1926.451(a) and Appendix A.1.b.i
Plank surfaces (top and bottom) are not obscured by any coating or finish. Finishes or treatments are allowed if they are not opaque. ANSI A10.8-5.2.12 and OSHA 1926.451(b)(9)
Manufacture:
The plank is manufactured under a quality management system (i.e. ISO 9001)
The manufacturing process is inspected on a monthly basis by an independent third-party agency (i.e. TP. AΡΑ. PPA) ANSI A10.8
All adhesives used in the manufacture of the planks meet the requirements of ASTM D2559.
Identification:
Information on planks is embossed on the sides for means of long-term identification.
All planks are embossed with the MOE on the sides for means of long-term identification. (i.e. 2.15€, 1.9€)
All planks bear the seal of an independent, nationally recognized third-party inspection agency. ANSI A10.8-5.2.10
Plank emboss includes a means of identifying the manufacturer (i.e. manufacturer name/logo or product brand name) an identification of the manufacturing mill number.
Date of manufacture is included on the plank for traceability to manufacturing data.
The planks is clearly identified that it is intended to be used as "SCAFFOLD PLANK™
All chemically treated (i.e. fire-retardant) planks are readily identified as such. Identification should indicate that chemically treated planks are safe for either interior or exterior use.
Literature:
Allowable design properties are published by the manufacturer. ANSI A10.8-5.2.9
Design values include appropriate adjustments such as wet use and fire-treatment.
Tables indicating maximum span are published by the manufacturer consistent with industry-accepted criteria. ANSI A10.8-5.2.11
Planks are designed so that they do not deflect more than 1/60 of the span when loaded. OSHA 1926.451 (f)(16)
Product name embossed on plank matches name on literature.