Overview: This document covers slope calculation, visualization, and contour placement for site analysis and design. - **Understanding Slope Calculation and Application**: Slope is the angle of a, surface expressed as a percentage using the formula S = V/H. - **Visualizing and Comparing Different Slopes**: Slope can be shallow or steep, with 100% slope equating to a 45-degree angle. - **Drawing and Placing Site**: Knowledge Contours of slope allows for accurate contour placement on site plans, considering different contour intervals.

1. WEEK 5 LECTURE
SLOPES & PROFILES

2. LEARNING OBJECTIVES
• UNDERSTAND HOW TO CALCULATE
SLOPE
• APPLY THE S=V/H FORMULA
• VISUALIZE AND COMPARE
DIFFERENT SLOPES
• ANALYZE A SITE FOR SUITABLE USES
• DRAW A SITE PROFILE
• BUILD A SITE CONTOUR MODEL
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3. WHAT IS SLOPE?
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• ANGLE OR DEGREE OF A SURFACE
• SLOPE CAN BE SHALLOW OR STEEP
• EXPRESSED AS A PERCENTAGE

4. EXAMPLES
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5. EXAMPLES
SKITUTOR.COM/RESOURCES/NA-TRAIL-RATINGS-OVERVIEW

6. CALCULATING SLOPE
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7. EXAMPLES
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8. EXAMPLES
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9. SLOPE = ANGLE
https://trailism.com/trail-grades/
• NOTICE SLOPE DOES NOT MATCH
UP WITH DEGREES
• 100% SLOPE WOULD BE EQUAL
TO EXACTLY 45%
• IT CAN BE DESCRIBED AS 1 UNIT
OVER AND 1 UNIT UP
• S = 100%
• 100% = 1’/1’ = 1.0

10. SHOWING SLOPE IN PLAN
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HOW DOES SLOPE CORRESPOND TO
OUR SITE PLAN AND CONTOURS?
• REMEMBER THE BASIC EQUATION
• SLOPE = VERTICAL DISTANCE
DIVIDED BY HORIZONTAL DISTANCE
• S = V/H

11. CALCULATING SLOPE
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12. CALCULATING SLOPE
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13. CALCULATING SLOPE
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14. CALCULATING SLOPE
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15. CALCULATING SLOPE
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16. CALCULATING SLOPE
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17. VISUALIZE:
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18. DRAWING CONTOURS
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• IF YOU KNOW THE SLOPE CAN YOU
PLACE THE CONTOURS ON A PLAN?

19. PLACING CONTOURS
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20. PLACING CONTOURS
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21. PLACING CONTOURS
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22. PLACING CONTOURS
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23. SUMMARIZE:
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FIRST EXAMPLE:
• SLOPE = 5% AND CONTOUR
INTERVAL = 1’
SECOND EXAMPLE:
• SLOPE = 5% AND CONTOUR
INTERVAL = 2’

24. QUESTIONS?
• PLEASE DON’T HESITATE TO REACH OUT!
• EMAIL: KJWILWOL@HACC.EDU
• OFFICE HOURS: WEDNESDAYS 5-6PM EST (OR BY
APPOINTMENT)
• PHONE: (717) 780-2300 EXT. 717889
• RESPONSE TIME GENERALLY WITHIN 24 HOURS