Site Surveying. Fieldwork Title: Linear Measurement and Calculation of Irregular Area

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City University of Hong Kong

Division of Building Science and Technology

Fieldwork Report 1

Course: Site Surveying

Course Code: BST10761

Group: T03

Fieldwork No: 1

Fieldwork Title: Linear Measurement and Calculation of Irregular Area

Date of Fieldwork: 24-02-2005

Group Members: Chan Tak Fai (50612264)

Cheung Man Ho (50592680)

Lam Cheong Wing (50590568)

Tam Man Tik (50592931)

Wong Wai Ki (50585595)

Content

A. Objectives

B. Equipments

C. Procedures

D. Precautions

E. Data

F. Sketch 1 - Free hand sketch

G. Sketch 2 - Plan view

H. Calculations of area of ?ABC

I. Calculations of area - Methods of Squares

J. Calculations of area - Average Ordinate Rule

K. Calculations of area - Trapezoidal Rule

L. Calculations of area - Simpson's Rule

M. Errors Analysis

N. Sources of errors

O. Difficulties

P. Improvements

Q. Conclusions

A. Objectives

The distances between the given points on the site are measured. The offset lines of the nominated points are found. From the data, the area of an irregular shape of the site is calculated by different methods.

B. Equipments

Tape

It is made of plastic with green protective coating. It is used to measure a relatively long distance in linear measurement.

Ranging rod

It is a 2 m rod. It has a pointed end to push into the ground. It is used to fix a point on ground for measuring distance.

5 m measuring tape

It is made of steel with a protective coating. It is used to measure a relatively short distance in linear measurement.

Bubble

It is a small container with a bubble inside the liquid. It is fixed fix on the ranging rod in this case and is used to ensure that the rod is perpendicular to the ground.
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C. Procedures

) The reference points A, B, C were given.

2) The distance from AB, BC and CA were found by the type.

3) Tape was used to measure any one point on the site and it was named as point D as a check point.

4) The offset length and chainage points given on the particular chain line were measured and they were recorded on booking form

5) Ranging rod and rod level was put on two points which were chosen on the chain line, and the 5 m measuring tape ...

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