Clicky

Types Of Scales In Surveying

Types Of Scales In The Surveying.

Since the Surveyed area is the very large, it is never possible to make full size of drawing. For convenience it is generally necessary to draw them to the reduced size, this operation is called ( drawing to scale).

Types Of Scales In The Surveying.

There are 2 types of scales used in Surveying.

1 –  Numerical scale.

2 – Graphical scale.

A – Numerical Scale.

Numerical Scale is also further classified into 2 general types.

1 – Engineer’s Scale.

2 – Fraction Scale.

1 – Engineer’s Scale.

In an Engineer’s scale, the scale of the map or drawing is the proportion which every distance on the map or drawing bears to corresponding distance on the ground.

Example: One cm = Ten m

This means, One cm on the drawing represents Ten m on the ground, the scale of the map is 10 m to One cm.

2 – Fraction Scale.

The scale is also expressed by means of the vulgar fraction whose numerator is invariable unity. The fraction is called (Representative Fraction) or (RF). It is therefore, the ratio of the map distance to the corresponding ground distance. In forming the representative fraction both numerator & denominator must be reduced to same denomination.

For example, if the scale is Ten m to 1 cm, the RF of the scale is One cm/10x100cm = 1/1000

Learn More

  1. Transition Curve In Highways – Purpose-Requirements-Example

  2. Super-elevation And Design Formula | Advantages | Highway Engineering

B – Graphical Scale.

On the graphical scale, the units of the measurement should always be stated.

Characteristics Of the Good Scale are.

  1.  It should read to the greatest accuracy required.
  2.  It should be the convenient to use.

Other Post 

  1. What is Alignment Of Road.

  2. linear Measurements In the Surveying by direct Method

  3. What is the benefits of Drawbacks Of total Station 


To Get more information, Visit Our Official website

.
Land Surveying & Architects

JOIN US & LIKE OUR OFFICIAL FACEBOOK PAGE

THANKS.

About Raja Junaid Iqbal

Hi My name is Raja Junaid Iqbal and i am Land Surveyor by Profession but I've specialized in the field of Q,S and land development. As Professional Surveyor I engaged my self in all over the Gulf since 14 years.

Check Also

Hight of Instruments

How to Calculate the RL by HI method in surveying

How to Calculate the RL by HI Method in Surveying. In this article i will …

Leave a Reply

Your email address will not be published. Required fields are marked *

error: Content is protected !!