# 1890

```Agriculture Mechanics
Name: ___________________________ Period: __________ Date: _______________
Profile Leveling
Notes Guide
Objective 1: Explain the purpose of profile leveling, and identify key concepts in
conducting a profile survey.

profile leveling –

A profile survey is extremely useful for locating:
o

o
o
o
The usual procedure:
o
o
o
o benchmark –
o elevation –

Most surveys:

Calculating elevation of a point:
o station –

May be denoted as:




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o
A station may have up to two types of readings taken on it:

backsight –

foresight –
o height of instrument –

Calculating height of instrument:
o The survey continues by taking measurements at ________________
____________________.
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o turning point –
Objective 2: Complete a set of survey notes for a profile survey.

field notes –

To reduce error:

_____________ of field notes = quality of the _____________
o __________________ in surveying is vital:
.

writing utensil:

corrections:
o To complete accurate field notes, it is imperative for a person to understand
the necessary components:


Paging:

Form of entries:

Right-hand page:

Left-hand page:
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
o
o
o
o
o
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Objective 3: Complete profile survey exercises, including target rod
measurements and calculations of slope and elevation.

After learning about the _________________ and preliminary components of a
survey, a person is ready to take that information to complete a survey and the
corresponding field notes.

To conduct a profile survey from scratch requires a person to understand the
process on ____________ and to ______________ that understanding in the field.
o Survey crew:
o “laying out:”

flags:

markers:
o tripod level:
o Once the crew has set up:
o “Closing the loop:”
Objective 4: Calculate allowable error in a survey exercise.

In leveling, _______________ can and will occur.

Most often, these errors are _____________________.

To accept a survey as ____________, it must be within the ________________
____________.

allowable error –
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
The final error of ____________ in a leveling circuit is __________________ to the
_____________ ____________ of the number of ______ __________________.
o The formula assumes a distance of _______ feet for each rod reading.
o If the error of the survey is _______________ than the allowable amount
calculated, the survey should be ________________.
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```