NW. tion:
Two holes were cut in the existing slab at this location and existing conduit was discovered, see Picture |
below. One of the two hole will be used to create a new engine foundation and the other will be recast with
concrete, One of the holes was cut in the location shown in ECN-002 drawing S-1401 (left) and the other (right)
was cut in the slab to the east at the request of NWTF in an effort to move the foundation and engine frame out
of the access aisle and reduce the potential of.a tripping hazard.
In the case of either hole being used for the foundation, the hole that will be used for the foundation will require
all conduit to be removed and rerouted as required and the hole not used for the foundation will require all
existing conduit be repaired and/or be removed and relocated prior to being recast with concrete.
In the case of the “right” hole to be used for the engine foundation, all conduit must be removed as discussed
above as well as there is expected to be a ductile iron drain line that will require protection. To protect the drain
line from forces transmitted through new engine foundation, the hole should be excavated down past the
minimum required depth as stated on S-1201 to expose the drain line. See Detail | below showing how to
protect the drain line. After the detail is constructed around drain, the hole can be backfilled and compacted to
the minimum depth shown on S-1201 and the remaining can be cast as shown in the original detail on 5-1201 or
the drain with protection and the entire hole can be reinforced and cast.
In addition, the “right” hole can be extended south approximately 4” to avoid additional conduit in NE wall
penetration. See further detail below.
Estimated location of
existing 4 drain line
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