Wastewater Treatment Systems - page 55

OWS - Internal Ladder
Tank Manway
Stringer
Rung
60°
Highland fabricates standard and
custom stairs to facilitate access to
OWS gauge ports and manways.
OSHA standard-design stairways
provide access to the top of the OWS
from a platform attached to one end
Length
Ladders, platforms and walkways are
designed to comply with strict OSHA
specifications. Carbon steel fabrication
with a painted finish is standard.
Stainless steel or galvanized finish
is available upon request. Mounting
brackets and other structural
accommodations can be factory-
fitted to facilitate field installation.
OSHA compliant interior access
ladders require a properly sized access
manway for safety clearance. OSHA
compliant standard or caged external
access ladders are designed for
access to the OWS top, gauge port,
manways, or other appurtenances.
Handrails and provisions for anchoring
to a support pad are also included.
Note: OSHA compliant internal ladders measure 16" wide and external ladders measure 24" wide.
Ladders, Platforms and Walkways
12" ctrs
OWS - External Ladder
Step-off Platform
Stairways and Ships Ladders
Ships Ladders
30"
24" 28"
Anchor
Length
30"
60
°
Height
Support Legs When Required
34"
39-45
°
9-11"
Stairways
of the OWS and include non-skid
fiberglass grating on the stair treads and
platforms. Handrails and provisions for
anchoring stairway to a support pad
are also included.
In addition, Highland will manufacture
Ships Ladders for job sites with limited
space and can custom fabricate
ladders, platforms, and walkways to
suit your site-specific needs.
34"
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