4 dumpy level surveying introduction

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Page 1: 4 dumpy level surveying introduction

Dumpy Level SurveyingEnergy & Environment

This PowerPoint Presentation is developed and created by :

Page 2: 4 dumpy level surveying introduction

Revision from Previous

LessonWhat are these lines

called and what are they

used for?

If this map has a scale of

1:25,000 what does this

mean?

They are called

contours. They join up

similar spot heights

For every 1cm on the

map, it represents

25,000cm in real life or

250m

Page 3: 4 dumpy level surveying introduction

Revision from Previous

Lesson

An Alidade. It is

used for looking

through and

drawing a line

parallel to your line

of sight

What is this called and

what is it used for?

What is this called

and what is it

used for?

A Tripod. It is used for

getting a level surface

on rough ground

A Plane table. It is used

for drawing on.

What is this called and

what is it used for?

Page 4: 4 dumpy level surveying introduction

Surveying Tools

Leveling

Staff

Tripod

Dumpy

Level

Theodelite

GPSCompassMeasuring

Tape

alidade

Tripod

Plane Table

Page 5: 4 dumpy level surveying introduction

Dumpy Level

How could we mark this information on a map?

Why might we want this information?

Water Transportation Building on a slope

To find the elevation of a point with respect to a known level.

What do we use it for?

Contours

Page 6: 4 dumpy level surveying introduction

Now it is time for a discussion.