2780 Memorandum, James Lawrence Carney and Town of Lexington, supplementary conditions, September 19, 1902

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Driveia—ys . Excavate for the drivewkys from the street to the three entrances and extending to the two turns , as shorn on the plati . The sub -grade of these driveways Is to be eight inches below the finished Srade and the road bad is to be wonked to an even surface parallel to the finished surface . The finished surface Vill be roundod or crowned four, inches . After the sub-grade has been fomedq the road bed is to be thoroughly rolled with a heavy horse ring-roller, or5,if the highway superintendent so allows, the town steam Viler, before any OAA* material is placed upon it,'aad all places dug out and the spac�s A refilled with suitable material to 11-ne of sub-grade and the sur- faces again rolled until they become hard and compact . 7,pon taxis sub-grade place a layer of -wome crushed field stones five Inches deep . No stone in . this layer is to ex;:red three inches in 4ny dimensions . Ca-Le is to 'be taken to preserve the crown mid this foundation layer is to be well compacted by roll- ijig with a ,ieav*,,r roller, and is to be kept in good condition Until the pavement is put upon .1t, • A middle layer, of crushed field stonat is to be placed evenly over the foundation '14jars no a-tone in this layer is to exceed two inches La any dLmension. Care is to be taken to pro" serve the crown and the whole is to be watered and thoroughly roll- ed again with a heavy ring-roller antil the layer is hard Wid aom- pact , and the surface one inch below the finished grade of drive. Upon this raiddl� layer after, It is thoroughly con solidatad, there Is to be spread a finishing layers at least one inch deep after compacting, of fine crushed field stone screen ingst composed of stones averaging one half inch in diameter. This