(A) Lights and barricades. All openings in streets, alleys, sidewalks, public ways, or places shall be protected by suitable barricades, fences, or railings. Where necessary, the openings shall be covered at night, preferably with steel plates or with planks. Sufficient red lights, bombs, or flares shall be provided to clearly indicate all openings, equipment, materials, or any other hazard that might cause an accident.
(B) Temporary walks and crossings. Safe temporary walks with guard rails or fences shall be provided when it is necessary to block or close a sidewalk to pedestrian traffic. Bridges across a trench shall be built of sound materials with substantial guard rails and of sufficient width and strength to accommodate the pedestrian traffic without danger. When it is necessary to provide bridges for vehicular traffic across openings too large to permit the use of steel plates, the same shall be substantially constructed of sufficient width and strength to permit the safe passage of traffic. Temporary structures, fences, bridges, etc., shall be maintained in a safe passage condition at all times.
(C) Protective bracing.
(1) All openings shall be properly sheeted and braced where necessary to protect the public, workmen, and private property. This bracing and sheeting shall be sufficient to protect all surface and subsurface structures and to prevent the undermining of adjacent pavement, curb, sidewalks, and other structures. Existing house connections, sewers, water mains, gas mains, conduit lines, drain pipe, and other utilities shall be supported across trenches until the backfill is completed.
(2) Sheeting and bracing used to support the sides of the openings shall be carefully removed as the backfilling progresses, but if considered by the building inspector to be necessary for the protection of the banks, the sheeting shall be cut off 2 feet below the surface of the street and left in place. If the pavement along the sides of the opening is or becomes undermined and unsupported, the permittee shall, at his own cost and expense, break down and remove such undermined pavement and the foundation thereof, and shall also remove all loose earth and replace it with earth properly compacted in the manner provided under § 92.06 (A).
(D) Protection of trees and shrubs. Lawns and trees shall be protected from damage. Trees in the line of the trench must not be removed or disturbed except with the approval of the building inspector.
(E) Use of hydrants. A permit issued by the building inspector must be obtained for the use of fire hydrants. Fire department hydrant wrenches must be provided and no other type of wrench shall be used for opening or closing the hydrants. No person shall use a fire hydrant unless a permit is issued.
(F) Public utilities to be notified. Whenever it becomes necessary to excavate under or adjacent to utility installations such as tracks, mains, ducts, pipes, etc., notification must be given to that utility and it shall be the duty of the permittee to properly protect the other utility property in a safe condition so that the public may not be endangered or unnecessarily inconvenienced. At no time will the permittee be permitted to build on top of other utility property or be permitted to use backfill materials that have a deleterious effect upon subsurface, pipes, and structures, which might damage the other property. ('70 Code, § 903.05) Penalty, see § 92.99