Please note: These specs may only apply to bundle and truckload
quantities that are shipped straight from the mill. Occasionally, we
may fill our warehouse inventory from other suppliers. All of our
materials, however, meet or exceed OSHA requirements.
|z-PLANK Laminated Veneer
Lumber (LVL) Scaffold Plank
z-Plank® is a strong yet lightweight Laminated Veneer Lumber
scaffold plank. The structural uniformity of LVL combined
with the strict quality control of all processes of
manufacturing ensures z-Plank is safe and reliable scaffold
z-Plank is structural Laminated Veneer Lumber (LVL)
manufactured in accordance with AS/NZS 4357:1995 ‘Structural
Laminated Veneer Lumber’ and is Product Certified by the
Plywood Association of Australasia to equal or exceed the
performance claims specified in this brochure.
Size (2x10 and 2x12)
Thickness – 1.5” nominal
Widths – 9.25” and 11.75”
Approximate Weight (lbs/ft)
Thickness - 3.2 mm - (Nominal)
Species - Radiata pine
Joints - Scarf
Length -0, + 3/8”
Width -0, + 1/16”
Finish Unsanded faces, sawn edges
Arrises removed by chamfering
Ends painted burnt orange to inhibit
|Each plank is
permanently embossed along each edge with the following
- z-Plank – for identification
- 2.15 E RC – indication of premium grade scaffold plank
- OSHA – indicating design is per OSHA requirements
- Date of Proof Loading
- Custom Embossing
|Each plank is
permanently stamped on the face of the plank with the
- AS/NZS 4357 – LVL manufacturing standard
- PAA JAS-ANZ – The Plywood Association of Australasia
Product Certification marks
- WBG Technologies – Proof Loading Operation
- Scaffold Plank Premium LVL
Optional edge painting is also
available in blue, yellow, orange, green and red.
Quality Control and Product Certification
z-Plank is manufactured in a quality controlled process as
required by ANSI A10.8. The compliance and process based quality
control requirements is third party audited by the Plywood
Association of Australasia (PAA). The audits, end product
testing and market inspection are used as the basis for Product
Certification by the PAA as a JAS-ANZ accredited Product
Certification body. JAS-ANZ stands for the government
established “Joint Accreditation System of Australia and New
Zealand” which exists as the peak organization for accreditation
of Product Certification bodies. The PAA’s Quality Control
Program has been a registered Quality Management System under
Applicable Design Standards
- AS/NZS 4357 : 1995 - Structural laminated veneer lumber.
- ANSI A10.8 - 2001, Safety Requirements for Scaffolding.
- OSHA, Occupational Safety & Health Administration,
U.S. Dept. Of Labour, Regulations (Standards - 29 CFR)
Specifications - 1926 Subpart L, Appendix A.
- BS 5973 : 1993 Code of practice for access and working
scaffolds and special scaffold structures in steel.
- BS 2482 Specification for timber scaffold boards.
Strength and Stiffness Verification
- LVL is periodically sampled from production and tested for
Modulus of Elasticity and Modulus of Rupture in accordance
with AS/NZS 4357. In addition,
- Each scaffold plank is proof loaded using the ProofStep!
Quality Control program and its stiffness measured for
verification of strength and stiffness claims.
For use in accordance with OSHA
Maximum spans determined for standardized live loads in
accordance with OSHA, Standards 29 CFR 1926.451 and Subpart L,
- Spans are from center to center of scaffold supports.
- Deflections are limited to L/60 per OSHA requirements.
- The “Person” load is defined in ANSI A10.8 as a 200-pound
person with 50 pounds of
a. The “1-Person” Load is applied at mid-span.
b. The “2-Person” Load is applied with each “person” load
to either side of mid span.
c. The “3-Person” Load is applied with a “person” load at mid
and a “person” load at 18” to either side of mid span.
- For conditions other than those listed above, contact WBG
Technologies or a
- z-Plank meets all criteria and conditions as prescribed by
ANSI A10.8 standard.
- Planks are available in lengths of 8’ to 20’.
- The design properties are for untreated LVL scaffold
planks used under dry conditions.
Dry conditions are defined as an environment where the
moisture content of the
planks will not exceed 16%.
- The design properties are based on a “flat” or plank
- If the moisture content of the planks is expected to
exceed 16%, the Moment Capacity
shall be multiplied by 0.8 for wet use conditions.
- Fastener values for scaffold planks shall be equivalent to
SPF Lumber values.
- The allowable Moment Capacity was determined in accordance
with the ANSI A10.8
subcommittee guidelines Appendix C.
testing process: Before shipment, all
z-Planks are proof tested using the unique ProofStep! - loading
process to verify that each plank meets the design values shown
in Table 2.
DI65 PRODUCT SPECIFICATIONS
Dense Industrial 65 Scaffold Plank
Stress Rating - 2200 F
MOE - 1.8
Characteristics permitted and limiting
Compression wood - Prohibited if in readily
identifiable and damaging form.
Checks - Surface seasoning checks, not
limited; though checks at ends are limited as splits.
Knots - Sound, firm, encased, and pith
knots, if tight and well spaced are permitted on the wide
face in sizes not to exceed the following:
On Wide Faces (Nominal)
Unsound Knots (1)
Manufacture - Standard E
(see para. 722(e))
Pitch and Pitch Streaks - Not limited
Pockets - Not limited
Shakes - On ends, limited as splits if
through; away from ends, heart shakes up to 2' long, none
through; ring shakes 1/3 the width of piece.
Skips - Hit and miss on any face in
occasional piece, but heavy skip on narrow face permitted in
10% of pieces.
Slope of Grain - 1 in 14.
Splits - Equal to width of the piece.
Stain - Medium.
Warp - 1/2 medium except very light twist.
Wane - 1/4 the width, 1/4 the thickness
except 5% of the pieces may have wane, 1/3 the width, 1/2
the thickness,for 1/4 the length.
Taken from 1994 SPIB Standard Grading Rules for southern
pine lumber Sec. 502, pgs. 95-96.
DI65 PRODUCT USAGE
|Dense Industrial 65 Scaffold PlankProper use
of 1 -1/2" x 9 - 1/4" (S4S) smooth surface scaffold plank
under dry use (<19% moisture) that meets the grading rules
published by the grading agencies approved by the American
Lumber Standards Committee and ANSI safety requirements.
or Light Duty
or Med. Duty
or Hvy. Duty
|Southern Pine Inspection
Conforms to ANSI A 10.8 Loading
1. Workers & tools weigh 250 pounds.
2. One worker located at span center.
3. Two workers located 18" on either side of span center.
4. Three workers located as indicated in requirements 2 &
5. Medium duty loading, 50 psf.
6. Heavy duty loading, 75 psf.
|Plank testing was
performed and loading charts were developed by Ralph E.
Bennett III, P.E. 12/95