. Electric railway journal . Concrete. American Steel & Wire Co. Repair Shop Appliances. (Seealso Coll Banding andWinding Machines.) American General Engg CoColumbia M. W. & M. I. Service Supplies Co. Repair Work. (See also Coils.) Cleveland Armature Mfg. & Repair M. W. & M. I. Electric Elec. & Mfg. Co. Replacers, Car. Columbia M. W. & M. I. CoElectric Service Supplies Co. Resistance, M. W. & M. I. Co. Resistances, Wire and Tube. General Electric Electric Elec. & Mfg. Co Retrievers, Trolley.
. Electric railway journal . Concrete. American Steel & Wire Co. Repair Shop Appliances. (Seealso Coll Banding andWinding Machines.) American General Engg CoColumbia M. W. & M. I. Service Supplies Co. Repair Work. (See also Coils.) Cleveland Armature Mfg. & Repair M. W. & M. I. Electric Elec. & Mfg. Co. Replacers, Car. Columbia M. W. & M. I. CoElectric Service Supplies Co. Resistance, M. W. & M. I. Co. Resistances, Wire and Tube. General Electric Electric Elec. & Mfg. Co Retrievers, Trolley. (See Catch-ers and Retrievers, Trolley.) Rheostats. General Electric Insulator Elec. & Mfg. Co. Roofing, Building. Barrett Co., Co., H. Paint Co. Roofing, Car. Boyle & Co., Inc., Co., H. W. Keyes Products Co., The. Rubber Specialties. Imperial Rubber Co. ■ July 1, 1916] ELECTRIC RAILWAY JOURNAL 93. , - ; IS flifl ml Rockingham Road, Davenport, Iowa. Brick pavement filled with Barretts Paving Pitch. A brick pavement that will never crack |-JERE is a brick pavement that neverwill crack. There are thousands ofmiles of such pavements in the UnitedStates. Even if a crack were started inone brick the crack cannot spread to thenext brick, for between the bricks is afilling- of Barretts Paving Pitch—a plastic,elastic compound. There is no rigid com-munication between the bricks. If cement filler had been used cracks wouldhave been more than possible. Cementlinks brick to brick in a solid monolith. Ifthe foundation sinks or softens ever soslightly the bricks do not settle with it butbridge the depression and some day aheavy wagon breaks the arch and a lone, unsightly and troublesome crack is theresult. The immense internal strain and stress ina monolithic cement-filled pavement causemany cracks. In a pitch-filled pavement,there is no strain for every joint is an ex-pansion joint. The p
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