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Precise leveling in New York City
Precise leveling in New York City
New York (N.Y.).
Precise leveling in New York City.
— New York : J.J. Little & Ives Co., 1915 — 263 p., [1] leaf of plates : ill., map
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Table of Contents
Title Page
Contents
Illustrations
General Statement
Instruments Used
Recovery of Coast Survey Bench Marks
Reconnaissance
Inspection of Instruments
Field Party
The Precise Level
The Leveling Rods
The Rod Lengths
Foot Plates and Foot Pins
General Instructions for Precise Leveling
Examples of Record and Computation
Corrections in Precise Spirit-Leveling
Computation of Precise Levels
Correction Tables
River Crossings
The Precise Level Net
Changed Elevations of Old Bench Marks
Board of Estimate and Apportionment Datum Plane Chart
Bench Marks
Supports for Rods and Instruments
Settling of Rods and Instruments
Winter Work
So-called Precise Leveling
Computation and Adjustment
Precision of the Results
Condition of Atmosphere and Length of Sight
Rate of Progress
Amount of Field Work
Conclusions
History of the Datum Planes Now In Use in New York City
The Question of Coastal Subsidence in New York City and Vicinity
Descriptions of Bench Marks
Standard Elevations of Bench Marks in the Borough of Richmond…
Descriptions of Bench Marks in the Borough of Richmond and…
Standard Elevations of Bench Marks in the Borough of Brooklyn
Description of Bench Marks in the Borough of Brooklyn
Standard Elevations of Bench Marks in the Borough of Queens…
Descriptions of Bench Marks in the Borough of Queens and…
Standard Elevations of Bench Marks in the Borough of Manhattan
Description of Bench Marks in the Borough of Manhattan
Standard Elevations in the Borough of the Bronx…
Description of Bench Marks in the Borough of the Bronx…
Page generated: 2015-07-03
New York (N.Y.).
Precise leveling in New York City
.
— New York : J.J. Little & Ives Co., 1915 — 263 p., [1] leaf of plates : ill., map