Answered: M7-1 CURVATURE AND REFRACTION. A man on…

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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$Modular Questions M7-1 CURVATURE AND REFRACTION. A man on shore standing close to the sea's water edge looks out toward the direction of the sea. If his eyes measure 1.72 m above sea level, determine how far out to sea is his visible horizon, neglecting the effect of waves. M7-2 CURVATURE AND REFRACTION. Neglecting the effect of tide and waves, determine how far out to sea a boat will be when a light on its mast 60 meters above the water disappears from the sight of a man on shore whose eye level is 1.583 m above the water. Man on Shore Point of Tangency Light on Mast Horizontal Ling Km Sea Loyel hm = 1.583 m ho = 60m M7-3 DIFFERENTIAL LEVELING. Preparing and complete the differential level notes for the information shown in the accompanying figure. Include the customary arithmetic check. Leveling Rod Leveling Rod 3.90 (BS) HI4 0.35 (FS) 0.68 HI, (BS) 3.75 (FS) HIz 1.64 (FS) 3.73 (BS) HI2 3.52 0.98 (BS) (FS) BM, (Elev 125.45 m) TP TP, M7-4 PROFILE LEVELING. Figure shows a schematic arrangement of a profile level route from BM33 to BM34. The values indicated represent backsight, foresight, and intermediate foresight readings taken on stations along the route. Prepare and complete profile level notes for the portrayed information. Show the customary arithmetic check and plot the profile. 2+00 I+ 00 2.77 TBS)22 3.06 (FS) o3+00 3.43 (FS) TP, 4+40 6+ 00 HI, (8S 2.8 (IFS) 5+00 8+00 HIz 2.45 (FS) 3.6 IFS) BM33 Elev 328.70m BM, "34 9+00 Il+00 10+00 M7-5 TRIGONOMETRIC LEVELING. A vertical angle of -12°25' is measured to the top of a water tank from an instrument set up on a hill 585.00 meters away from it. The telescope of the instrument is 1.45 m above the ground whose elevation is 462.73 m. Making due allowance for the earth's curvature and atmospheric refraction, determine the elevation of the base of the water tank is the tank is 32.0 m high. IFS)$

Transcribed Image Text:Modular Questions M7-1 CURVATURE AND REFRACTION. A man on shore standing close to the sea's water edge looks out toward the direction of the sea. If his eyes measure 1.72 m above sea level, determine how far out to sea is his visible horizon, neglecting the effect of waves. M7-2 CURVATURE AND REFRACTION. Neglecting the effect of tide and waves, determine how far out to sea a boat will be when a light on its mast 60 meters above the water disappears from the sight of a man on shore whose eye level is 1.583 m above the water. Man on Shore Point of Tangency Light on Mast Horizontal Ling Km Sea Loyel hm = 1.583 m ho = 60m M7-3 DIFFERENTIAL LEVELING. Preparing and complete the differential level notes for the information shown in the accompanying figure. Include the customary arithmetic check. Leveling Rod Leveling Rod 3.90 (BS) HI4 0.35 (FS) 0.68 HI, (BS) 3.75 (FS) HIz 1.64 (FS) 3.73 (BS) HI2 3.52 0.98 (BS) (FS) BM, (Elev 125.45 m) TP TP, M7-4 PROFILE LEVELING. Figure shows a schematic arrangement of a profile level route from BM33 to BM34. The values indicated represent backsight, foresight, and intermediate foresight readings taken on stations along the route. Prepare and complete profile level notes for the portrayed information. Show the customary arithmetic check and plot the profile. 2+00 I+ 00 2.77 TBS)22 3.06 (FS) o3+00 3.43 (FS) TP, 4+40 6+ 00 HI, (8S 2.8 (IFS) 5+00 8+00 HIz 2.45 (FS) 3.6 IFS) BM33 Elev 328.70m BM, "34 9+00 Il+00 10+00 M7-5 TRIGONOMETRIC LEVELING. A vertical angle of -12°25' is measured to the top of a water tank from an instrument set up on a hill 585.00 meters away from it. The telescope of the instrument is 1.45 m above the ground whose elevation is 462.73 m. Making due allowance for the earth's curvature and atmospheric refraction, determine the elevation of the base of the water tank is the tank is 32.0 m high. IFS)

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