Installation Chair is
the most efficient and
economical means of setting
a precast trench system. The
installation chair supports the ends of
the channels, aligns and locks the joint rigidly
together, and prevents the channels from floating.
Adjusting channel elevation is easy with the
POLYCAST Installation Chair.
NCI SKU: AC5683
Male and Female Transition Devices (699F & 699M) are available
where channel runs are in opposite directions and two channels
are set either female to female or male to male. A female
transition piece (699F) is used to fill the top space of the female
to female joint (this applies to 600 Series only). An epoxy grout
or urethane sealer can be used to smooth over the gap on the
inside bottom of the channel. A male transition piece (699M) is
used to lap under the male to male joint.
NCI SKU: AC5705