20. Calculate the pressure at a height of 8000 m above sea-level if the atmospheric pressure is 101.3 kN/m and temperature is 15°C at the sea-level assuming (i) air is incompressible, (ii) pressure variation follows adiabatic law, and (iii) pressure variation follows isothermal law. Take the density of air at the sea-level equal to 1.285 kg/m'. Neglect variation of g with altitude. [Ans. (i) 607.5 N/m², (ii) 31.5 kN/m² (üi) 37.45 kN/m² ] Oil (S= 0.96) Liquid (S= 1.6) 0.3 m m.

20. Calculate the pressure at a height of 8000 m above sea-level if the atmospheric pressure is 101.3 kN/m and temperature is 15°C at the sea-level assuming (i) air is incompressible, (ii) pressure variation follows adiabatic law, and (iii) pressure variation follows isothermal law. Take the density of air at the sea-level equal to 1.285 kg/m'. Neglect variation of g with altitude. [Ans. (i) 607.5 N/m², (ii) 31.5 kN/m² (üi) 37.45 kN/m² ] Oil (S= 0.96) Liquid (S= 1.6) 0.3 m m.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Pressure and Stress

Question

20. Calculate the pressure at a height of 8000 m
above sea-level if the atmospheric pressure is
101.3 kN/m and temperature is 15°C at the
sea-level assuming (i) air is incompressible,
(ii) pressure variation follows adiabatic law, and
(iii) pressure variation follows isothermal law.
Take the density of air at the sea-level equal to
1.285 kg/m'. Neglect variation of g with altitude.
[Ans. (i) 607.5 N/m², (ii) 31.5 kN/m²
(üi) 37.45 kN/m² ]
Oil
(S= 0.96)
Liquid
(S- 1.6)
Liquid
(S= 1.6)
Fig. 2.52

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