The Gate House and Northern Terminus of the New Aqueduct

1888 Scientific American  
AUGUST I I, 1888.J j'citutific �mtriclu. THE GATE HOUSE AND NORTHERN TERMINUS OF no room for the erection of a gate house. The first THE NEW AQUEDUCT. operation, therefore, was to establish a platform by Among all the criticisms which have been applied to blasting out the rock. This was done, and an immense the new aqueduct, upon which the future water supply notch was formed, about ninety feet wide and upward of New York is to depend, no unfavorable ones can be of a hundred feet deep. At the
more » ... feet deep. At the back, the cliff left by found which are directed against the u pper section, in-blasting rises to a great height. Within this notch cluding the main gate house and connections. This the foundations of the new gate house were laid. portion has been exempt from the judgments so freely The masonry is in three materials. Part is in course passed upon the main line. The majority of the ope-work of large blocks of limestone. The facings are in rations have been conducted in the open air: Far less similar work of granite. Some of the partition walls chance was given for carelessly executing the work are of brick. The whole is laio. in Portland cement. than existed in the underground tunnels, and the de-As the building does not extend back to the natural sire of the city engineers to make the work a perfect rock, the intervening space is filled with concrete. In one has been seconded to the utmost by the contractors.
doi:10.1038/scientificamerican08111888-87 fatcat:fopaoeobgnealbvsyrjxgqtdjq