CO129-270 - Public Offices & Others - 1895 — Page 93

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Every underground tank must be constructed

of strong iron or steel tank plates well riveted to- gether and thoroughly caulked. The tops end sides must be supported and strengthened by such uprights, girders, angle irons ena ties as, having regard to the capacity and situation of the tenk may be neces- sary to render the tank thoroughly substantial and

effective.

"The underground space in which a tank is enclosed must be of such construction and character that mineral oil cannot escape therefrom in the form of liquid whether under the action of fire or other- wise, so as to reach either directly or indirectly any other place where inflammable liquid is kept, or any protected work, or any river, stream, sewer or

Grain."

The above conditions are very severe end would entail an expense which the trade could not af-

ford.

7. There would be great difficulty in erecting the metal ten, and beading the bottom plates sufficient ly well to stand the enormous weight of the concrete

The roof, the oil stored and the structure itself. roof alone would give a load of over 50 tons at each support which would entail great expense in founda-

tions.

We think there is a grave objection to the placing of metal tank underground. Any leakage from joints of plates or rivets is at once detected end

repeired