# Notes Topographic Grading Exercises.pptx by pptfiles

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```									                     Notes: Topographic Grading Exercises

•   First Four Slides show how the exercise is presented to
the students. On the left hand side they are presented
with the four exercises they must solve.

•   The students are provided with printed worksheets that
match the exercises in this PowerPoint

•   As the class works through each of the exercises the
solution for each is revealed before proceeding to the next.
There are four exercises per sheet.

•   The goal of these exercises is to teach and not to test.

April 21, 2012                        Site Planning & Environmental Studies
Topography
W-1 to W-5                           Show the direction that water flows
TOPOGRAPHY
EXERCISES

HOW DOES THE
•    Steps to follow:
WATER FLOW?
. .

REDIRECT THE
•    First mark an H for High and an L for Low at each high and
WATER
. . .
low point. It may also help to label the “Ridges” and the
“Swales”.
GRADE A ROAD
. .

GRADE AROUND     •    Next draw lines at 90 degrees to the contours to indicate
A HOUSE
. . .             the flow of water.
INTERPOLATION
. .
•    Now add arrowheads to these lines to indicate which
direction the water flows.

•    Check your work by yourself or with a friend.

April 21, 2012                           Site Planning & Environmental Studies
Topography
W-1                           Show the direction that water flows
TOPOGRAPHY
EXERCISES

HOW DOES THE
WATER FLOW?
. .

REDIRECT THE
WATER
. . .

GRADE A ROAD
. .

GRADE AROUND
A HOUSE
. . .

INTERPOLATION
. .

April 21, 2012                Site Planning & Environmental Studies
Topography
W-2                           Show the direction that water flows
TOPOGRAPHY
EXERCISES

HOW DOES THE
WATER FLOW?
. .

REDIRECT THE
WATER
. . .

GRADE A ROAD
. .

GRADE AROUND
A HOUSE
. . .

INTERPOLATION
. .

April 21, 2012                Site Planning & Environmental Studies
Topography
W-3                           Show the direction that water flows
TOPOGRAPHY
EXERCISES

HOW DOES THE
WATER FLOW?
. .

REDIRECT THE
WATER
. . .

GRADE A ROAD
. .

GRADE AROUND
A HOUSE
. . .

INTERPOLATION
. .

April 21, 2012                Site Planning & Environmental Studies
Topography
W-4                           Show the direction that water flows
TOPOGRAPHY
EXERCISES

HOW DOES THE
WATER FLOW?
. .

REDIRECT THE
WATER
. . .

GRADE A ROAD
. .

GRADE AROUND
A HOUSE
. . .

INTERPOLATION
. .

April 21, 2012                Site Planning & Environmental Studies
Topography
W-5                           Show the direction that water flows
TOPOGRAPHY
EXERCISES

HOW DOES THE
WATER FLOW?
. .

REDIRECT THE
WATER
. . .

GRADE A ROAD
. .

GRADE AROUND
A HOUSE
. . .

INTERPOLATION
. .

April 21, 2012                Site Planning & Environmental Studies
Topography
R-1 to R-3                             Redirect the water using only cut
TOPOGRAPHY
EXERCISES
•     This second set of exercises asks students to do the
HOW DOES THE
WATER FLOW?            following:
. .

REDIRECT THE
WATER                § Read the existing topography and diagram the existing
. . .
flow of water
GRADE A ROAD
. .

GRADE AROUND            § To determine the desired or “new” flow of water
A HOUSE
. . .

INTERPOLATION           § To modify the topography using the “cut” technique
. .                  only to redirect the flow of water.

•     Each additional set of problems increases the level of
difficulty to build upon the lessons of the previous.

April 21, 2012                          Site Planning & Environmental Studies
Topography
R-1                              Redirect the water using only cut
TOPOGRAPHY
EXERCISES

HOW DOES THE
WATER FLOW?
. .

REDIRECT THE
WATER
. . .

GRADE A ROAD
. .

GRADE AROUND
A HOUSE
. . .

INTERPOLATION
. .

April 21, 2012                Site Planning & Environmental Studies
Topography
R-2                                     Redirect the water using only fill
TOPOGRAPHY
EXERCISES

HOW DOES THE
WATER FLOW?
•    This third set of exercises follows the same steps as the
. .

REDIRECT THE          previous exercises except that students are asked to
WATER
. . .

GRADE A ROAD
modify the topography using the “fill” technique only
. .

GRADE AROUND          to redirect the flow of water.
A HOUSE
. . .

INTERPOLATION
. .

April 21, 2012                          Site Planning & Environmental Studies
Topography
R-2                               Redirect the water using only fill
TOPOGRAPHY
EXERCISES

HOW DOES THE
WATER FLOW?
. .

REDIRECT THE
WATER
. . .

GRADE A ROAD
. .

GRADE AROUND
A HOUSE
. . .

INTERPOLATION
. .

April 21, 2012                Site Planning & Environmental Studies
Topography
R-3                            Redirect the water using both cut & fill
TOPOGRAPHY
EXERCISES

HOW DOES THE
WATER FLOW?
•    This fourth set of exercises follows the same steps as the
. .

REDIRECT THE          previous exercises except that students are asked to
WATER
. . .

GRADE A ROAD
modify the topography using a combination of the “cut”
. .

GRADE AROUND          and “fill” techniques to redirect the flow of water.
A HOUSE
. . .

INTERPOLATION
This is the balanced approach.
. .

April 21, 2012                          Site Planning & Environmental Studies
Topography
R-3                      Redirect the water using both cut & fill
TOPOGRAPHY
EXERCISES

HOW DOES THE
WATER FLOW?
. .

REDIRECT THE
WATER
. . .

GRADE A ROAD
. .

GRADE AROUND
A HOUSE
. . .

INTERPOLATION
. .

April 21, 2012                Site Planning & Environmental Studies
Topography
RD-1                                 Re-grade for the road as directed
TOPOGRAPHY
EXERCISES

HOW DOES THE     •    This fifth exercise asks students to modify the contours as
WATER FLOW?
. .
needed to accommodate a road. They should look to solve
REDIRECT THE
WATER
. . .             the problem as follows:
GRADE A ROAD
. .         •    Using Cut only
GRADE AROUND
A HOUSE
. . .
•    Using Fill only
INTERPOLATION
. .         •    Simple balanced approach using both Cut and Fill

•    Advanced balanced approach that includes both Cut and

Fill and the use of drainage swales on both edges

of the road.
April 21, 2012                          Site Planning & Environmental Studies
Topography
RD-1                             Re-grade for the road as directed
TOPOGRAPHY
EXERCISES

HOW DOES THE
WATER FLOW?
. .

REDIRECT THE
WATER
. . .

GRADE A ROAD
. .

GRADE AROUND
A HOUSE
. . .

INTERPOLATION
. .

April 21, 2012                Site Planning & Environmental Studies
Topography
G-1                                  Re-grade for the building as directed
TOPOGRAPHY
EXERCISES

HOW DOES THE
•    The sixth & seventh exercises ask students to modify the contours as
WATER FLOW?
. .              needed to accommodate a single house. They should look to solve
REDIRECT THE
WATER              the problem as follows:
. . .

GRADE A ROAD     •    Understand the existing flow of water.
. .

GRADE AROUND     •    Determine the desired flow of water
A HOUSE
. . .
•    Check the finish floor of the house and first move the contour just
INTERPOLATION
. .
below to wrap around the house

•    Modify contours both above and below to complete

•    This problem should be solved using a balanced approach

of both Cut and Fill.
April 21, 2012                                Site Planning & Environmental Studies
Topography
G-1                      Re-grade for the building as directed
TOPOGRAPHY
EXERCISES

HOW DOES THE
WATER FLOW?
. .

REDIRECT THE
WATER
. . .

GRADE A ROAD
. .

GRADE AROUND
A HOUSE
. . .

INTERPOLATION
. .

April 21, 2012                Site Planning & Environmental Studies
Topography
G-2                      Re-grade for the building as directed
TOPOGRAPHY
EXERCISES

HOW DOES THE
WATER FLOW?
. .

REDIRECT THE
WATER
. . .

GRADE A ROAD
. .

GRADE AROUND
A HOUSE
. . .

INTERPOLATION
. .

April 21, 2012                Site Planning & Environmental Studies
Topography
G-1                                  Re-grade for the building as directed
TOPOGRAPHY
EXERCISES

HOW DOES THE
•    The eight exercises ask students to modify the contours as needed to
WATER FLOW?
. .              accommodate two house. It combines the previous two problems.
REDIRECT THE
WATER              They should look to solve the problem as follows:
. . .

GRADE A ROAD     •    Understand the existing flow of water.
. .

GRADE AROUND     •    Determine the desired flow of water
A HOUSE
. . .
•    Check the finish floor of each of the houses and first move the
INTERPOLATION
. .
contours just below each to wrap around the house

•    Modify contours both above and below to complete

•    This problem should be solved using a balanced approach

of both Cut and Fill.
April 21, 2012                                Site Planning & Environmental Studies
Topography
G-3                      Re-grade for the building as directed
TOPOGRAPHY
EXERCISES

HOW DOES THE
WATER FLOW?
. .

REDIRECT THE
WATER
. . .

GRADE A ROAD
. .

GRADE AROUND
A HOUSE
. . .

INTERPOLATION
. .

April 21, 2012                Site Planning & Environmental Studies

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