(A) Jacking is the pushing of a sleeve or casing pipe under a roadway.
(B) When the pipe crossing under the roadway is to be jacked, the hole is not to exceed the outside diameter of the pipe. The pipe shall be pushed simultaneously with the auger so as to prevent cave-ins. The use of water by itself will not be permitted. Construction methods using water in combination with other materials to provide a stable bore may be approved by the County Roads Department if the type of construction is found to be suitable for the proposed installation.
(C) The pipe shall have sufficient length to extend beyond the shoulders. No excavation for pushing pipes shall be made in the shoulder area.
(D) A heavy timber shaft at either end of the jacking pit will be provided in order to prevent failure of the embankments and to maintain access to the jacking operation. This support shall be maintained during non-working hours in order to prevent cave-ins.
(E) In case of a false start or damage to the overburden, the void will be filled by pressure grouting.
(Ord. —, passed 6-30-2009) Penalty, see § 54.99