Advance Surveying math

Advance surveying 

(CE-105)

Lecturer: Kamruzzan Asif (B.Sc-AUST                                    Date: 14 September, 2018

Email: arifzamance@gmail.com, Cell: 01521218623                              Time: 09:00 AM

Photogrammetry: Can be defined as the 

             a) arts, science & technology

             b) to determine the position of physical objects and environment

             c) through the process of recording, measuring and interpreting

             d) of photographic images

Features: 

             a) Making survey using photographs

             b) The science of deducing physical dimensions

             c) Making map from a known level

             d) A series of techniques for measuring position and altitude

Field application:

             1) Topographical & engineering survey

             2) Hilly and mountain region

             3) To identifying the form of earth, rock type etc.

             4) To high accuracy project

             5) Used in rural and urban area

             6) Mostly used in planning design

Advantage: 

             a) Large area covered

             b) Less time consuming

             c) Inaccessible area can be reached

             d) Easily understand, interpret

             e) Cheaper (Long run)

Disadvantage: 

             a) Highly initial cost

             b) Costly instrument needed

             c) Skill personnel needed

             d) Lengthy administrative process

             e) Weather dependent

Types: 

             a) Close range Photogrammetry

                d<10 m

             b) Terrestrial Photogrammetry

                10 m <d<100 m

             c) Aerial Photogrammetry

                2 km<d<10 km

             d) Space Photogrammetry

                d>30 km

Why Photogrammetry:

             a) Extracting information from map easily

             b) Cheaper

             c) Extracting qualitative information

             d) Highly speed map generation

             e) Ideal technology

             f) Vast area

             g) Irregular shapes of terrain

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Exercise:

MACON

Find: (i) D=?

      (ii) if D=R then find area.

Solⁿ: Area of rectangle = ab

                         = (15+15) x (10+10) sft

                         = 600 sft

here D=R=√(15)²+√(10)²

           = 18.027 ft

Area of triangle= ½ x 2 x 15 x 10

                = 150 sft

Area of ½ circle =(π x 5²)/2

                  = 39.27 sft

So, Total area = 600+150+39.27

                = 789.27 sft Ans:

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