15-20-100 Explosive cartridges.

   All boxes in which explosive cartridges containing nitroglycerine are packed must be lined with a suitable material that is impervious to liquid nitroglycerine. Cardboard cartons closed at the bottom and made of strong and flexible material that is impervious to nitroglycerine may be used as a lining. At least one- fourth of an inch of dry sawdust or wood pulp or similar material must be spread over the bottom of the box before inserting the cartridges, and all the vacant space in the top must be filled with this material. The cartridges must be so arranged in the boxes that when they are transported with the boxes top side up all cartridges will be on their side and never on their ends.

   No explosive cartridge sold shall be larger than four inches in diameter and eight inches long. Packages of explosives shall not contain more than 50 pounds.

(Prior code §  125-10)

15-20-110 Magazines.

   No explosives shall be stored in any building other than a magazine except as provided in Section 15-20-060.

   Magazines for the storage of explosives shall be constructed as required in Sections 15-20-120 and 15-20-130.

(Prior code §  125-11)

15-20-120 Definitions.

   Magazine. A building, or part of a building, designed, intended or used for the storage of an explosive or fireworks, other than building which is otherwise classified under this chapter.

   (a)   First-class Magazine. Every magazine which contains more than 100 pounds of explosive or fireworks and has a content of not more than 2,500 pounds of explosives or fireworks.

   (b)   Second-class Magazine. Every magazine of a size which will contain not more than 100 pounds of explosives or fireworks.

(Prior code §  125-12)

15-20-130 Construction requirements.

   First-class Magazines. Any first-class magazine for the storage of explosives shall not exceed one story, or 15 feet in height, and such magazine shall not have any basement or any mezzanine. Every first-class magazine shall be constructed of noncombustible materials and shall have exterior walls of solid brick masonry; provided, however, that walls may be constructed of good sheathing and wood studs with all space between the studs filled with dry sand for a thickness of not less than five and one-half inches and covered on the outside surface with noncombustible materials. There shall be no openings in any walls except a doorway which shall be provided with noncombustible materials. There shall be no openings in any walls except a doorway, which shall be provided with a noncombustible or metal-clad door.

   Second-class Magazines. Any second-class magazine shall be constructed of noncombustible materials; provided, however, that the walls and roof may be of wood, metal-clad on the outside surface or covered with fire-retarding roof coverings.

(Prior code §  125-13)

15-20-140 Safety clearances.

   Without Barricades. Every magazine for explosives shall be isolated by a safety clearance according to capacity as follows:

 

Capacity of Magazine (Pounds)	At Surface of Ground (Feet)
100 or less	100
101 to 500, inclusive	400
501 to 1,000, inclusive	600
1,001 to 1,750, inclusive	800
1,751 to 2,500, inclusive	1,000

 

   Such capacity shall be confined to the cubic contents allowable for such quantity of the particular type of commercial explosives for which a permit or license has been issued, in accordance with the provisions of this Code regulating such use. Every magazine for fireworks shall be isolated by a safety clearance of not less than one-half the safety clearance required by this paragraph for explosives, for any like given quantity in pounds.

   With Barricades. Whenever a magazine for explosives is screened by natural features of the ground, or by an artificial mound of solid earth of such height that any straight line drawn from the top of any side wall of such magazine to any point 25 feet above the nearest lot lines, or the highest point of any building within the radius to be protected, will pass through such intervening earth barrier, then such minimum required horizontal safety clearances required by the first paragraph of this section may be reduced 50 percent; provided, however, that for every one foot such magazine is depressed below the street grade at a quarry or other pit, such minimum required horizontal safety clearance may be reduced ten feet; provided further, that such lateral safety clearance shall be not less than 25 feet in any case.

(Prior code §  125-14)

15-20-150 Supervision of magazines.

   All magazines shall at all times be in the care of a competent employee whose duty it shall be to see that no unauthorized person has access to them. Said employee shall have no other duty that will interfere with his careful supervision of such magazine or thaw house, and shall have a certificate of fitness as a magazine keeper.

   All magazines shall be painted bright red, with the words "Magazine – Danger" painted thereon in white letters on a black background. Such letters shall be at least six inches high.

   Only persons who hold certificates of fitness, or other authorized persons, shall be permitted to have access to magazines, which shall be kept securely locked when not open for the introduction or removal of explosives or for inspection by duly authorized officers of the city.

(Prior code §  125-15)