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The international gravity formula converted to English units

작성자 Uploader : ezcivil 작성일 Upload Date: 2016-03-19변경일 Update Date: 2016-03-19조회수 View : 364

Hydraulic Design Chart 000-1 was prepared to afford the engineer a convenient illustration of the nature of the variation of the acceleration of gravity with latitude and altitude. The theoretical values of acceleration of gravity at sea level are based on the international gravity formula converted to English units

g_o = 32.08822(1 + 0.0052884(sin(Φ))^2 - 0.0000059(sin(2Φ))^2)

The correction for elevation above sea level is contained in the equation:

g_H = g_o - 0.000003086H

g_H = acceleration of gravity at a given elevation in ft/sec^2
g_o = acceleration of gravity at sea level in ft/sec^2
Φ = latitude in degrees.
 H = elevation above sea level in ft.

*** 참고문헌[References] ***

HYDRAULIC DESIGN CRITERIA, SHEET 000-1, PHYSICAL CONSTANTS, ACCELERATION OF GRAVITY
g_H = 32.08822(1 + 0.0052884(sin(Φ))^2 - 0.0000059(sin(2*Φ))^2) - 0.000003086*H
변수명 Variable 변수값 Value 변 수 설 명 Description of the variable


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