Specification

ULTRA-JACK
SYSTEM
Customer Support and Ordering Information
781-344-1000 • www.qualcraft.com
ULTRA-JACK
INSTRUCTIONS
Choosing a Walk Plank:
1) Wood walk planks shall be made of Scaffold Grade or equivalent
lumber. When fabricated from 2 inch full thickness, undressed
lumber the maximum span between supports shall not exceed 9
feet. When fabricated from 2 inch nominal thickness lumber the
maximum span between supports shall not exceed 7 feet.
2) Aluminum walk planks must have been manufactured for that
purpose and shall not exceed 24 feet in length.
3) All walk planks shall be overlapped a minimum of 12 inches
and secured from movement except when using aluminum walk
planks designed to be fastened together. For this style walk plank
the joint must be secured in place directly over the Ultra-Jack
support arm.
4) All scaffold planks must extend no less than 6 inches and no
more than 12 inches over the support arms.
5) OSHA regulations require that the platform to be fully decked
and that the minimum width be 12 inches.
Installing a Walk Plank:
1) Extend the platform arm of each Ultra-Jack to the actual width
of the work platform and secure in place by tightening the fasters
along the side of the adjustable arm.
2) Place appropriate decking between the two Ultra-Jack scaffolds.
See “Choosing a Walk Plank” above.
3) Walk planks should overhang the Ultra-Jack platform arm 12
inches on each end. When using more than two walk planks to
complete a system installation, overlap and secure walk planks
to each other with 12 inches of overlap on each walk plank as
required by OSHA.
4) Secure walk planks to Ultra-Jack with the chains attached to
each platform arm, passing chain over and then under rungs and
securing to Ultra-Jack with hardware provided. A padlock may
be used for added security.
5) Always erect the scaffolding system so that the working or
standing platform is level.
6) Install Qual-Craft Ultra-Jack Guardrails and End Rails as required
by law.
Installing a Guardrail System:
1) Install a guardrail support arm to the walk plank at each of the
outside corners and along the length of the walk in increments
of 8 feet or less.
2) Install aluminum guardrails at both the top and mid-rail hold-
ers for the full length of the walk platform and secure in place.
3) Install toe boards along the length of the walk plank and se-
cure in place.
4) Install End Rail system (top, mid-rail and toe boards) at each
end of the walk platform.