TUNNELS. A "Tunnel" shall be defined as a subterranean excavation, lined or unlined, which because of its length necessitates an employee or employees working underground for a distance of ten (10) feet or more. On all work classified as "Tunnel," the tunnel classification and rates shall apply to the entire length of the tunnel, from portal to portal. A tunnel whose horizontal grade is over thirty percent (30%) and less than sixty percent (60%) shall be defined as a "Raise." A tunnel whose horizontal grade is greater than sixty percent (60%), and whose depth is more than twice its largest horizontal dimension, shall be defined as a "Shaft." The above definitions of work shall apply also to the work of timbering and lining of tunnels (raises and shafts) as described above.
TUNNELS. When a Technical Engineer is working in a tunnel, they shall receive $3.00 over their regular rate.
TUNNELS. The vertical clearance for tunnels shall be at least 4.9 m except where as alternative routing providing the 4.9 m is available. For those lesser situations, at least 4.3 m plus an allowance for resurfacing may be provided. The desirable width for tunnels is at least 13.3 m. This width consists of two 3.6 m lanes, a 3.0 m right shoulder, a 1.5 m left shoulder, and a 0.8 m safety walk on each side. However, because of the high cost, a reduced tunnel width can be accepted, but it must be at least 9.1 m wide, including at least a 0.5 m safety walk on each side.
TUNNELS. Historically, the Union as the sole representative of the employees covered under this Agreement, has acquired and maintained an expanded craft jurisdiction in the construction of new tunnels or in the repair, rehabilitation or modification of existing tunnels. The work in tunnels to be performed by employees covered under this agreement is as follows but not limited to: All work for all tunneling operations, including but not limited to subways, railroads, sewer, water, vehicular and utility tunnels and all shafts, manholes and access ways in connection therewith, all work in connection with but not limited to, the excavation, dewatering, shor- ing, forming, the pouring, placing and finishing of con- crete and grout and the reinforcing of same by any means, the bolting and securing of any structural support system, the handling and installation of all pre-cast products, the loading, unloading and handling of all materials, the changing and sharpening of all bits, heads and cutters, the operation of hoists, road headers, air tuggers and hydrau- lic jacking systems, the installation of temporary wiring, all signaling, caulking, mining, the operation of drilling machines, drilling and blasting, the laying of all pipe and conduit and other work. The broader scope of the tun- nel jurisdiction covered under this Agreement is further identified in the tunnel classifications as stated under Ar- ticle 18 of this Agreement, whether in compressed air or free air or by soil solidification methods or otherwise in rock or in soft ground and whether driven by liner plate, by shield, by mole or otherwise. Such operations are here- inafter collectively referred to as “the trade”. The employer recognizes that the Union has acquired jurisdiction of the tunnel work described above and agrees that it will not assist or abet vio- lations of such acquired jurisdiction in the hiring of TERRITORIAL JURISDICTION employees or in the continuation of employment of employees performing such work. Any work jurisdiction now exercised by Heavy and General Laborers’ Locals 472 and 172 of the Laborers’ International Union of North America shall be recognized by the Utility and Transportation Con- tractors Association and the Associated Construction Contractors of New Jersey.
TUNNELS. All bores/tunnels for mainline installation shall be staked at the start and end of the bore/tunnel. Points shall be set direct (horizontally) and oﬀset a distance that will not be disturbed during construction (horizontal and vertical) with iron and witness lath.
TUNNELS. Tunnels of 500m or more in length shall be equipped with comprehensive facilities and dedicated management for operation, maintenance and emergency response. Tunnels with lengths not exceeding 500m and roads having characteristics of tunnels, such as underpasses and roads within noise enclosures or under a deck, shall be equipped with facilities commensurate with the safety risks. The design speed of tunnels in terms of alignment and lane width shall be the same as the approach roads, unless special provisions are made for the adaptation of drivers. Tunnels and their approaches shall, as far as possible, be free from unfavorable geometric conditions including sharp curves and steep grades. At-grade intersections shall be located with adequate distance away from tunnels and grade-separated intersections are not generally permitted inside a tunnel unless a very high level of safety features is incorporated. Speed limits inside tunnels shall be determined on the basis of safety risks and shall not exceed 110km/h for unidirectional traffic and 80km/h for bidirectional traffic. Overtaking shall not be permitted inside bidirectional tunnels and is generally discouraged inside unidirectional tunnels. No pedestrians or slow vehicles shall be permitted inside tunnels except where operational conditions are suitable or else appropriate facilities are provided. There shall be adequate facilities and plans to cope with unauthorized vehicles, incidents, fire and maintenance needs through implementation of lane closure, tunnel tube closure, tunnel full closure and, where appropriate, single tube contra-flow operation. Facilities for inspection, emergency parking and emergency response shall be provided at or in the vicinity of tunnel portals of major tunnels. Consideration shall be given to the provision of laybys and vehicle cross passages inside tunnels exceeding 1,500m in length. Emergency stations consisting of an emergency telephone and at least two fire extinguishers shall be provided at intervals not exceeding 150m. Escape facilities shall be provided at intervals not exceeding 500m. An emergency signing system on separate power source shall be provided to indicate laybys, cross passages, emergency stations, emergency exits and evacuation routes. Essential traffic signs include speed limits, length of tunnel and, where appropriate, any special restrictions. Where intersections are located in the vicinity of a tunnel, adequate advance direction signs shall be prov...