1 acre of seeding (native); 320 lf of drilled caisson
(48 inch); 188 lf of guardrail type 3 (6-3 post spacing); 3,513 sf of sign panel (class ii); construction surveying.
"In the early planning stages, the decision was made to use a drilled caisson
system, which is more costly, rather than a driven pile system for noise abatement," said Simona.
However, based on the CM's experience, the design team was swayed toward a drilled caisson
bridge that would significantly reduce disruption to the stream and avoid costly temporary shoring.
Tenders are invited for Work includes approx 114 LF of (36") drilled caisson
; 59 LF of guardrail type 3 (6-3 post spacing); 3,484 LF of 2" electrical conduit (bored); 1,090 LF of 3" electrical conduit (bored); 22 EA of pedestrian signal face (16) (countdown); 42 EA of traffic signal face (12-12-12).
Tenders are invited for work includes approx 1,000 ls removal of its node equipment; 32 ea removal of closed circuit camera; 200 hour potholing; 0.9 ac seeding; approx 126 lf of 36" drilled caisson
; 11 ea manhole special; approx 2,135 lf 2" bored electrical circuit; approx 1,660 lf 2" electrical conduit (plastic); 1 ls electrical systems modifications; 13 ea pull box (special); 1 ls wiring; 9 ea service meter cabinet; 1 ea dynamic message sign led (overhead); 33 ea cctv; ethernet switches; traffic control.
1 acre, seeding (native); 1,157 CY of aggregate base course (class 6); 52 LF of drilled caisson
(42"); 400 SY of concrete sidewalk (6"); construction surveying; 45 gal of epoxy pavement marking.
Potholing; Seeding (Native); Hot Mix Asphalt (Patching) (Asphalt); Drilled Caisson
(36 Inch); Guardrail Type 3 (6-3 Post Spacing); 2 Inch Electrical Conduit (Bored); Pull Box (30"x48"x24"); Service Meter Cabinet ; etc.,
Iron Woman used a crane to set HP14 x 117 pounds, 45-foot long I-beams into the drilled caissons
, and a skid-steer backfilled to the engineer-prescribed depth while crew members kept the beams aligned and square.
Douglaston had to drive 2,000 piles into rock from 50 to 90 feet below grade, many of them highly technical drilled caissons
, using a process that consists of drilling holes and placing reinforcing steel and concrete into the holes while sheeting, shoring and dewatering the earth below grade.
The foundation system is expected to consist of straight shaft drilled caissons
extended into the underlying bedrock and sleeved to create a de-bonded zone to the depth of the influence zone of the adjacent tunnel tube.