. Electric railway journal . ILWAY JOURNAL. [Vol. XXXIV. No. 10. CONCRETE POLES The Oklahoma Gas & Electric Company, Oklahoma City,Okla., during the past year has experimented with rein-forced concrete poles on a large scale. At a recent meet-ing of the Oklahoma Electric Light, Railway & Gas Asso-ciation, J. M. Brown, superintendent of the company, reada paper in which he described the methods of molding andsetting the poles and gave some figures of cost. The poles are made hexagonal in shape and follow inthe center. A 35-pole is 7 in. across the corners at the topand 16 in. across at the butt
. Electric railway journal . ILWAY JOURNAL. [Vol. XXXIV. No. 10. CONCRETE POLES The Oklahoma Gas & Electric Company, Oklahoma City,Okla., during the past year has experimented with rein-forced concrete poles on a large scale. At a recent meet-ing of the Oklahoma Electric Light, Railway & Gas Asso-ciation, J. M. Brown, superintendent of the company, reada paper in which he described the methods of molding andsetting the poles and gave some figures of cost. The poles are made hexagonal in shape and follow inthe center. A 35-pole is 7 in. across the corners at the topand 16 in. across at the butt. The forms are arranged sothat by adding sections 5 ft. long to either end poles ofany length can be molded. The forms are made of heavytimber to avoid warping and are built in two halves whichare clamped together and accurately lined up to insurethe pole being straight. The I2j4-in. high-carbon-steel, de-formed-section reinforcing rods are then put in placesymetrically about the central axis. At the top of the pole. Setting Reinforced Concrete Pole the rods are secured by passing them about 2 in. throughholes in a steel plate, bending over the ends and then bolt-ing down a second plate on the bent-over ends with foursmall bolts. The rods are then stretched and anchored inthe butt by an ingenious method. The ends of the rodsproject about 6 in. through holes in a steel plate fastenedin the form. Pieces of y^-in. steel rod 10 in. long with aneye formed in one end and threads on the other end areused for stretching. The ends of the reinforcing rods arebent over and hooked into the eyes of the stretchers andshort pieces of pipe are passed over the stretchers buttingagainst the steel plate. A nut and washer bearing on theouter end of the piece of pipe is screwed down on thethreaded end of the stretcher giving any desired tensionto the rods. The form is then ready for placing the core,which is made in two sections, telescoping with each core is wrapped with one thickness o
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