To find the elevation of the top of a chimney, the following observations were made from two stations P and Q, 50 m apart. Horizontal angle at station P, between chimney and Q = 60°. Horizontal angle at station Q, between chimney and P =50°. Angle of elevation from P to the top of chimney =30°. Angle of elevation from Q to the top of chimney =29°. Elevation of the line of sight at P=22.5 m. and elevation of the line of sight at Q = 20.5 m. What is the elevation of the top of the chimney from observations at station Q?
To find the elevation of the top of a chimney, the following observations were made from two stations P and Q, 50 m apart. Horizontal angle at station P, between chimney and Q = 60°. Horizontal angle at station Q, between chimney and P =50°. Angle of elevation from P to the top of chimney =30°. Angle of elevation from Q to the top of chimney =29°. Elevation of the line of sight at P=22.5 m. and elevation of the line of sight at Q = 20.5 m. What is the elevation of the top of the chimney from observations at station Q?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:To find the elevation of the top of a chimney, the
following observations were made from two
stations P and Q, 50 m apart.
Horizontal angle at station P, between chimney
and Q = 60°. Horizontal angle at station Q,
between chimney and P =50°. Angle of
elevation from P to the top of chimney =30°.
Angle of elevation from Q to the top of chimney
=29°. Elevation of the line of sight at P=22.5 m.
and elevation of the line of sight at Q = 20.5 m.
What is the elevation of the top of the chimney
from observations at station Q?

Transcribed Image Text:To find the elevation of the top of a chimney, the
following observations were made from two
stations P and Q, 50 m apart.
Horizontal angle at station P, between chimney
and Q = 60°. Horizontal angle at station Q,
between chimney and P =50°. Angle of
elevation from P to the top of chimney =30°.
Angle of elevation from Q to the top of chimney
=29°. Elevation of the line of sight at P=22.5 m.
and elevation of the line of sight at Q = 20.5 m.
What is the elevation of the top of the chimney
from observations at station P?
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