All work authorized by the permit shall be completed in accordance with the construction specifications as described in this subchapter. Where the construction specifications of any other governmental agency having jurisdiction over the permittee are more stringent than that of the city's, the more stringent requirements shall govern.
(A) Protective measures and traffic flow.
(1) Whenever any activity on a right-of-way is permitted, the permittee shall meet the requirements of the Florida Department of Transportation Manual on Traffic Controls and Safe Practices for Street and Highway Construction, Maintenance and Utility Operations (1989), the Manual on Uniform Traffic Control Devices (MUTCD), Section V, Construction and Maintenance, 1989 Revision, as published by the Federal Highway Administration. Other criteria shall be the 1989, T.T.C. 240 D, T.T.C. 250, published under the title of Guide for General Traffic Safety, International Municipal Signal Association and Institute of Transportation Engineers.
(2) Permittees shall be responsible for initiating, maintaining and supervising all safety precautions and programs in connection with the project. Permittees shall also take all necessary safety measures to assure the safety of all employees on the project and other persons who may be affected by any construction. Permittees shall take all measures necessary to protect and prevent damage to any project materials or equipment to be incorporated into the project, whether in storage on or off the site and other property or improvements at the site or adjacent thereto, including but not limited to trees, shrubs, lawns, drainage swales, walks, pavement areas, roadways, and/or any other improvements not designated for removal, relocation or replacement in the course of construction.
(3) Permittees shall comply with all applicable laws, ordinances, rules, regulations and orders of any governmental agency having jurisdiction over permittees' activities. Permittees' duties and responsibilities for the safety and protection of the project shall continue until such time as all the work is completed and the permit is closed out. Refer to § 179.999.
(B) Protection of adjoining or adjacent property and improvements. In performing the work authorized by the permit, permittees shall:
(1) Keep all drainage improvements within the area of the construction free and unobstructed at all times. Permittees shall store, retain and take proper measures to prevent silt discharge, and the like, for all surplus water resulting from the work, in conformance with all current regulations and permits.
(2) Sweep and clear all obstructions, dirt and debris of any kind from roadways, sidewalks, bike paths and other public thoroughfares daily.
(3) Ensure that all excavations do not interfere with access to fire hydrants, fire stations, valve housings, emergency vehicles or other similar equipment that is vital to the safety, health and welfare of the citizens of Palm Bay.
(4) Be required to use rubber-tired vehicles and not tracked vehicles, where necessary, to prevent damage to existing paved surfaces which would not otherwise be subject to repair or replacement as a direct result of construction, authorized by the permit. It shall be acceptable to place a minimum of two (2) inches of soil or rubber tire casings between the tracks and the paved surface to prevent damage.
(5) Ensure that all excavated material retained on site be placed, removed or located so as not to endanger the safety of workers, pedestrians or traffic, and so as not to present an inconvenience to adjoining property or traffic. Permittees shall take measures to reduce noise, dust and unsightly debris.
(C) Trenching — Unpaved Areas.
(1) Length. The maximum allowable size of any trench to be opened in one (1) day is limited to the size of a trench that can be properly backfilled in accordance with the provisions of this subchapter during any one (1) day's work.
(2) Cover. Underground installations shall be a minimum of thirty (30) inches below the existing grade. Any crossing or parallel installations of improvements to include storm drain culverts shall have a minimum separation of twelve (12) inches. Manhole tops, valve boxes, and meter boxes shall be located no higher than existing grade. When the construction specifications of any other governmental agencies having jurisdiction over the permittee are more stringent than those of the city's, the more stringent requirements shall govern.
(3) Compaction. When improvements can be installed in a trench width of twelve (12) inches or less, and no deeper than forty-eight (48) inches below existing grade, a compactive effort shall be required; however no testing is required.
(4) Width. When improvements are installed in trenches with a width of greater than twelve (12) inches and/or greater than forty-eight (48) inches below existing grade, the trench width shall be a minimum of the diameter of the improvement plus twenty-four (24) inches; that shall be twelve (12) inches on each side of the improvement. All compactive efforts and testing shall be required as specified in § 179.097(B), (C), and this division (4).
(5) Unsuitable material below improvement. Wherever excavation of the trench exposes unsuitable materials, as described in § 179.097(B)(1)(a), in the bottom of the trench and is an unsuitable foundation upon which to lay or support the improvement, such unsuitable materials shall be removed. The trench shall then be backfilled and compacted to a density of ninety-five percent (95%) of AASHTO T-180-86, for each eight (8) inches of suitable material to the bottom of the improvement. The placement of three-fourths (3/4) inch rock gravel to the necessary depth may be used as an alternative to the above method.
(6) Backfill. Only good quality backfill, as provided for in § 179.097(B)(1)(a), shall be used. All soft and yielding material and other portions of the subgrade which will not compact readily shall be removed and replaced with suitable material. Backfill shall be compacted in two (2) stages. The first stage of compaction shall be up to a point of one-half (½) the diameter of the improvement. The second stage of compaction shall start at a point one (1) foot above the improvement and continue in twelve (12) inch layers to the surface. Each layer's compaction effort from one (1) foot above the improvement shall achieve a minimum of ninety-five percent (95%) of maximum density in accordance with AASHTO T-180-86. Each layer shall be compacted to the required density and tested as provided for in this subchapter, prior to placing the next layer. Density tests shall be accepted only on stabilized, nonyielding surfaces. Flowable fill may be used as backfill. Flowable fill shall meet or exceed the minimum standards as set forth in the Florida Department of Transportation 2000 Edition of Standard Specifications for Road and Bridge Construction, Section 121-Flowable Fill, Subsections 121-1 through 121-6, or the most current edition.
(7) Removal and use of excavated material. All excavated soils from any project deemed suitable as fill material shall be utilized on the permitted project or delivered to a city facility designated by the public works department. All excavated soils deemed unsuitable shall be disposed of by the permittee at its own expense and in a lawful manner. If it is determined that the backfill material on site will not readily compact, it may be exchanged on a one-for-one (1:1) basis with suitable material. Proper records for this exchange shall be supplied to the city each day of the exchange.
(8) Dewatering. Construction shall be accomplished in a dry trench. To maintain a dry trench, wellpointing or other approved methods of dewatering shall be carried out. When dewatering is necessary, a plan indicating the location and proposed system, i.e., length of points, size of headers, and the like, to be used shall be submitted to the Public Works Department for approval prior to installation. The proposal shall describe the points of discharge along with proposed siltation protection. No dewatering wellpoints shall be placed within five (5) feet of the edge of pavement, except in the case of a permitted road cut. Restoration of wellpointing holes and voids shall be accomplished by hydraulic backfilling with clean sand and done in conjunction with the removal of the wellpoints.
(9) Trench box and sheeting. A trench box or sheeting and shoring shall be used to protect the work site, to include but not limited to the preservation of the roads, adjacent property and improvements; also to protect the health, safety and welfare of all persons on site. All trench boxes, sheeting and shoring shall conform to current OSHA standards.
(D) Trenching — paved areas. Trenching in paved areas shall be the same as division (C) above, with the following exceptions and additions:
(1) Pavement cuts.
(a) Pavement cuts are prohibited unless one (1) or more of the following conditions exist:
1. Subsurface obstructions such as other existing improvements are in conflict;
2. Existing conditions of the roadway will require reconstruction;
3. The road is scheduled by the city for reconstruction within two (2) years.
(b) The final decision on all road cuts shall be made by the Public Works Department. When pavement cuts are permitted, the cuts shall be perpendicular to the edge of pavement; and construction methods are to be in accordance with this subchapter.
(2) Compaction. A compactive effort and testing shall be required in all paved areas. Also refer to § 179.097(B)(2).
(3) Backfill. Only good quality backfill as provided for in § 179.097(B)(2)(a) shall be used. All soft and yielding material and other portions of the subgrade which will not compact readily shall be removed and replaced with suitable material. Compaction shall begin on the first eight (8) inches of bedding backfill or on the exposed bottom to assure the bedding is suitable as foundation to support the improvement, and continue in twelve (12) inch layers to the bottom of the base material. Each layer of the compaction effort shall achieve a minimum of ninety-eight percent (98%) of maximum density in accordance with AASHTO T-180-86. Each layer shall be compacted to the required density and tested as provided for in this subchapter, prior to placing the next layer. Density tests shall be accepted only on stabilized, nonyielding surfaces. Flowable fill may be used as backfill. Flowable fill shall meet or exceed the minimum standards as set forth in the Florida Department of Transportation 2000 Edition of Standard Specifications for Road and Bridge Construction, Section 121-Flowable Fill, Subsections 121-1 through 121-6, or the most current edition. Base materials, as specified herein, shall be used in conjunction with flowable fill in all paved areas.
(4) Base material. The materials used shall be placed in accordance with § 179.097(B)(2)(b)1. and 2. The base course shall be placed to a minimum depth of twenty-four (24) inches, in six (6) inch compacted layers, below the asphalt surface course. The base backfill trench shall be forty-eight (48) inches wider than the limits of the backfill trench, twenty-four (24) inches on both sides. The compaction shall be in six (6) inch maximum layers. Compacted density shall not be less than ninety-eight percent (98%) of maximum density of a representative sample as determined by AASHTO T-180-86. Each layer shall be compacted to the required density and tested prior to placing the next layer. Density tests shall be accepted on stabilized, nonyielding surfaces only. The public works department shall reserve the right to substitute tests at random locations to verify compaction.
(5) Prime coat. The materials used shall be placed in accordance with § 179.097(B)(2)(c)1. and 2. In paved areas, application of prime-coat shall be on all exposed surfaces and joints prior to asphaltic concrete being placed; and the prime coat shall be applied at the rate of 0.1 – 0.15 gallons of emulsified asphalt per square yard and shall be applied thoroughly and uniformly with no excess. In no case shall asphalt be placed on any prime coat prior to that material's specified curing time.
(6) Surface coat. The materials used shall be placed in accordance with § 179.097(B)(2)(e). The surface treatment shall not be less than one (1) inch thick or consistent with existing pavement thickness whichever is greater. Installation shall be on a continuous plane without humps or depressions. The asphaltic concrete shall exceed the base course by twenty-four (24) inches, twelve (12) inches on both sides along neat sawcut lines.
(E) Jack-'n'-bore. Bore casings of any kind shall extend past the edge of pavement by a minimum of five (5) feet. The backfill in excavated bore pits within the rights-of-way and easements shall be compacted to a stabilized and nonyielding condition. The back- fill density shall be accomplished by a compaction effort in twelve (12) inch layers, starting with the first twelve (12) inch layer above the exposed bottom of the pit and the last compaction effort on this surface. No density testing shall be required unless requested by the Public Works Department.
(F) Restoration. In performing the work authorized by the permit, permittees shall, at their own expense, restore and repair all adjacent property and improvements to a condition as good as or better than the condition that existed prior to the permittee's activities. Refer to § 179.097(B)(1)(b) through (e).
('74 Code, § 20-99) (Ord. 93-03, passed 2-18-93; Am. Ord. 2001-36, passed 5-17-01) Penalty, see § 179.999