Concrete in the country / [American Cement Company]. (1910)
American Cement Company · Association of American Portland Cement Manufacturers · leaf 110
e elbow bends, so that the sewage in thetank will cover the mouths of the tile. In the side forms, at a distance of 2 and 4feet from the inlet wall, set ^-inch bolts to \vhich the bafllc boards will later beattached. These boards reach entirely across the tank, project above the sewage,and extend… … Concrete Hydrant Sink 111 Window Hatches Window hatches should be protected by a flap cover, to close in times ofhea\-}- rain or snow.