Bosch LTC 1271 Series Dokumentacja Pobierz pdf (Strona 35)

C. The Contractor must uncover and expose all known

conflicts along the trench route to permit

gradual conduit deviations and realignments.

D. To ascertain that the conduit has been properly

laid, the work will be inspected throughout the

construction period by a representative of the

Bristol Board of Education.

E. All conduits must be sealed, immediately after

installation, to prevent the entrance of gas or

liquid building.

F. Building penetration cores must be temporarily

sealed after drilling to prevent leakage into the

building until conduits are fully installed.

G. Rubber compression conduit plugs, waterplug and B

duct sealers should be used to seal conduits

after all cabling is installed. Rubber

compression plugs are the preferred choice.

H. All conduits shall have a mule tape, with footage

markings, drag line installed. The mule tape is

to remain in all conduit pathways after cable

installation is complete.

I. Building conduit entrance points must be below

grade. Below grade entrance conduits shall be

installed with a minimum drop-away of ¼" for each

2 linear feet, for a minimum distance of 10

linear feet from the building entrance point.

J. Placement Method

1. Width of the trench should be the width of

duct structure plus 6 inches on each side.

2. All conduit that is to be encased in

concrete shall have approximately 1 inch of

clearance between the bottom tier of ducts

and the trench bottom. Concrete will have a

minimum strength of 5,000 P.S.I. @ 28 days.

3. The depth of the trench should be the height

of the conduit structure plus a minimum of

24 inches.

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Bosch LTC 1271 Series Dokumentacja Strona 35