1970-055 Council Ordinances - Laserfiche WebLink

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e. All such tanks must be provided with danger signs painted conspicuously on their sides bearing the words "Inflammable, Keep Fire and Lights Away" in letters at least three inches high. f. All such tanks shall be protected by an embankment or dike with a capacity at least one and one-half times the capacity of the tank and not over four feet high. Such embankment shall be constructed of earthwork or reinforced concrete without openings through it. Earthwork dikes shall be compactly built with a three foot crown and a slope of at least two to one on both sides, that is, the horizontal leg of the right triangle outlining a cross section of the dike shall be at least twice as long as the perpendicular leg thereof. All brush, weeds, and combustible material must be kept cleared away from the embankment and space around the tank. g. All such tanks shall be constructed on a firm foundation and if of metal shall be electrically grounded. Tanks set more than one foot above the surface of the ground must have a noncombustible foundation and supports. h. The premises upon which such tanks are constructed must be surrounded by a substantial fence, adequate to keep out all intruders. i. All such tanks must be painted with a suitable rust -resisting paint. j. All emptying and filling of such tanks shall be by pumpage and such emptying or filling shall be done only when there is a man in constant attendance on the pump. The motor and pump must be located in a separate building at least twenty-six (26) feet from the tanks, warehouse and garage, or entirely surrounded by fire- proof wall. k. All such tanks shall be of material of sufficient thickness to hold the contents safely, and shall have a factor of safety at joints of at least 2.5. All riveted points shall have an efficiency of at least sixty per cent (60%). No verticle tanks shall exceed thirty (30) feet in height. Underground Tanks - All underground tanks shall conform to the following regulations: a. The top shall be below any piping to which they may be connected, and at least three feet below the surface of the ground. b. When under a building, the top shall be at least two feet below the lowest floor. The floor above the tank shall be of reinforced concrete nine inches thick extending twelve inches beyond the outline of the tank in all directions. c. No tank may be installed or maintained in any street, alley or public ground; or under any sidewalk except by ordinance granting a franshise therefor. d. Tanks shall be set on a firm foundation and enclosed in concrete or surrounded with soft earth or sand, well tamped into place. e. The storage permitted in underground tanks shall be as follows: