15
3.3 TOP BRACKET INSTALLATION: Before
installing the top bracket it is recommended that
the ladder or climbing structure be evaluated
by a qualifi ed engineer to determine if the load
requirements for the system are satisfi ed.
A. INSTALLATION OF TB-2, TB-3, TB-10
TOP BRACKETS:
Direct Connection to Ladder:
See Figure 6 for typical installations of the
TB-3, TB-10, and TB-2 top brackets onto a
round rung ladder. The top bracket should be
positioned to allow users safe access when
connecting or disconnecting from the system.
The top bracket is typically mounted in the
center of the climbing surface for ease of
climbing, but may be located towards the side
of the ladder if required.
TB-3, TB-10:
• The top bracket may be installed with up
to four feet extending above the top rung
connection for systems limited to one
user. This will allow the use of only two
ladder rung clamps. Ensure the ladder will
withstand the required loads between the
two rungs.
• The top bracket may be installed with up
to three feet extending above the top rung
connection for systems allowing up to two
users simultaneously.
• The top bracket may be installed with up to two feet
extending above the top rung connection for systems
allowing up to four users simultaneously.
TB-2:
• The top bracket may be installed with up to fi ve feet
extending above the top bracket connection for systems
allowing up to four users simultaneously.
WARNING:
One rung clamp (two for the TB-10 bracket) is designed
to bolt through the bracket and onto the rung. This clamp must not
be omitted, or the bracket may slip under load.
Install rung clamps using the hardware provided. Do not
substitute other fasteners. Torque fasteners to 20-25 ft-lbs
(27.1-33.9 N-m).
Stand-off Support Connection:
Figure 6 shows the installation of the TB-3 top bracket using
a horizontal stand-off bracket. These installations are limited
to one user on the system at a time. Use hex bolts in place of
U-bolts to attach the TB-3 top bracket to the horizontal stand-
off. Torque fasteners to 20-25 ft-lbs (27.1-33.9 N-m).
Ladder Rung Support:
Figure 8 shows the installation of the 6100151 ladder rung
support piece. The rung support is used to support hollow
rungs with a minimum inside diameter between 1 in. (2.54 cm)
and 1-1/8 in. (2.86 cm). In some applications the ladder rungs
Figure 6 - Installing Top Brakcets
Height above
Top Connection
Height
above
Top
Connection
TB-2 & TB-3
Installation
TB-10
Installation
Figure 7 - Stand-off Support
Connection
TB-3 Installation
with Horizontal Stand-Off
Содержание LAD-SAF
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