GEOLOGIC DATA METHODS: TUNNELS

1.  GIVEN: TOPOGRAPHIC MAP WITH TUNNEL ALIGNMENT

– ADJUSTMENTS MADE IN TUNNEL ALIGNMENT

– INCREASE  HEAD DIFFERENCE

– CONTOUR INTERVAL: 10 FT

– HORIZONTAL SCALE: 1 IN. = 80 FT: 40 SCALE x 2

– NORTHWEST PORTAL ELEVATION IN ROCKY PEN RUN:_180 FT

– DOWNSTREAM PORTAL ELEVATION:  160 FT_

 

2.  TUNNEL LENGTH: 5600 FT

3.  CONSTRUCT THE TOPOGRAPHIC PROFILE OVER AND ALONG THE TUNNEL ALIGNMENT

– VERTICAL SCALE: 1 IN. = 200 FT

– VERTICAL EXAGGERATION:  VE = ______

– SHOW:

– GROUND SURFACE

– TUNNEL PROFILE

– LABLE DIAGRAM

– USE ENGINEERING PAPER

4.  PLOT GEOLOGIC STRUCTURES ON TOPOGRAPHIC PROFILE

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