This item shall govern trench excavation and backfill for installation of traffic
signal conduit constructed in accordance with the lines and grades indicated on the
Drawings, construction detail drawings, Standard Detail No. 835S-1 "Trench Detail
for Traffic Signal Conduit", and/or written instructions from the Engineer or designated
representative. This item shall include all applicable work, including trench excavation,
bedding material, backfill for the traffic signal conduit and Portland cement concrete
trench cap and encasement; as specified under this item and in accordance with City
of Austin Standard Specifications, Standards and the Utility Criteria Manual, Section
5, "Cuts in Public Rights-of-Way."
Unless indicated otherwise on the Drawings, this item shall include cutting, removal,
disposal and restoration of existing pavement surface and base courses, driveways,
curb and gutter, sidewalks and ramps, furnishing and placement of select bedding,
backfilling, hauling and disposition of surplus materials, bridging of trenches and
other provisions for maintenance of traffic or roadway access as indicated on the
Drawings.
This specification is applicable for projects or work involving either inch-pound
or SI units. Within the text and accompanying tables, the inch-pound units are given
preference followed by SI units shown within parentheses.
