Refer to the right illustration (Fig. 1), one 2-lane conventional highway goes through the points of...
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Refer to the right illustration (Fig. 1), one 2-lane conventional highway goes through the points of A, B, C, D, E, F. PI1 and P12 are points of intersection. The center angles of the two arcs are 90°. If the design speed is 30 mph and radius of each curve is 300 ft, estimate the minimum distance between PI1-P12 using Caltrans standard. (Hints: 1. Segment CD must be able to accommodate the superelevation transition based on 1/3-2/3 rule. You need to refer to Caltrans HDM $202.2, Tables 202.2A through 202.2E and Figure 202.5A.) (2 pts) Figure 1 B O D P12 PI1 E F Refer to the right illustration (Fig. 1), one 2-lane conventional highway goes through the points of A, B, C, D, E, F. PI1 and P12 are points of intersection. The center angles of the two arcs are 90°. If the design speed is 30 mph and radius of each curve is 300 ft, estimate the minimum distance between PI1-P12 using Caltrans standard. (Hints: 1. Segment CD must be able to accommodate the superelevation transition based on 1/3-2/3 rule. You need to refer to Caltrans HDM $202.2, Tables 202.2A through 202.2E and Figure 202.5A.) (2 pts) Figure 1 B O D P12 PI1 E F
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301 A B We Know P1 b 2 P C f HE R Tangent length PC P D ... View the full answer
Related Book For
Management Accounting
ISBN: 9780730369387
4th Edition
Authors: Leslie G. Eldenburg, Albie Brooks, Judy Oliver, Gillian Vesty, Rodney Dormer, Vijaya Murthy, Nick Pawsey
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