150 Cement Construction

'150 CEMENT CONSTRUCTION should be fitted and plastered in after the con crete has set and forms have been removed. Bins should be built of a size to suit convenience, with walls four inches thick and reinforced with one-quarter-inch rods placed twelve inches apart horizontally and vertically to give the bin walls strength to withstand the lateral pressure when they are filled with vegetables.

If a concrete roof is desired, forms should be erected, and a roof two and one-half inches thick built. On the top, and before the concrete is dry, a quarter-inch layer of mortar, consisting of one part Portland cement and one part sand, should be placed and well troweled. The forms should not be removed before three weeks. The roof should be reinforced with woven wire fabric, and so should the steps. If the roof is sufficiently long to require supports, an eight inch pillar in the center may be erected, rein forced with one-half-inch rods two inches apart and one inch from the surface.

Mushroom Cellar.

The method of construct ing a cellar of this character is the same as for a root cellar, with the exception that no floor will be required, and there should be little light.

Cyclone Cellar of Concrete.

After fire, a farmer on the western plains fears a cyclone more than anything else on earth. The only sure salvation is to get below the surface of the ground, and practically every farm has a cyclone cellar. It is becoming the practice to construct these places of refuge of concrete. In using con crete as a building material, there is no danger of the roof blowing off, or of the walls rotting out in a few years and having to be renewed.