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An exit ramp sign with 6 words, located 30 ft away (to th side) from the driver path. Given: Design acuity = 20/40. Design speed = 55mph.

An exit ramp sign with 6 words, located 30 ft away (to th side) from the driver path. Given: Design acuity = 20/40. Design speed = 55mph.

Structural Analysis
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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Example 30 ft sign with 6 words An exit ramp sign with 6 words, located 30 ft away (to the side) from the driver path. Given: Design acuity = 20/40, Design speed = 55mph. Acuity = 20/40 means people can read 1/3" letters 10 ft away Questions: We design on the safe side (Driver should read the sign with fairly clear vision) : (1) How far from the exit should the sign be located? (2) What letter's height should we use in the sign?
Transcribed Image Text:Example 30 ft sign with 6 words An exit ramp sign with 6 words, located 30 ft away (to the side) from the driver path. Given: Design acuity = 20/40, Design speed = 55mph. Acuity = 20/40 means people can read 1/3" letters 10 ft away Questions: We design on the safe side (Driver should read the sign with fairly clear vision) : (1) How far from the exit should the sign be located? (2) What letter's height should we use in the sign?
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