draw contour lines with 0.5 intervals

Q: Question 5 The map scale is 1"=40-ft. The distance between two features on the map are scaled to be…

A: In survey, while measuring the distance or area, we always measure the real or actual distance, but…

Q: Matching Directions: Match each description of locating points when creating planar entities in the…

A:

Q: Q2/ For the land shown below, if the length of squares is (30m) and the scale is (1:1000). Find: 1-…

A: Given:  Square Length L=30m scale  1:1000 contour interval=1m find the followings  1 no. of contours…

Q: Draw a grid 6 in wide by 7 in long with 1-in intersections, and place the given elevations at the…

A: To find : To plot the 5ft contour graph

Q: 1. The accompanying tabulation gives elevations of points over the area 30m by 30m city lot. The…

A:

Q: Where are the numbers 7.1 and 0.0013 from?

A: Given equations For PM: Perticulate MatterCmax (PM) = 7.1 x (Q / H) x (1 - exp (-2.303xKxH))Xmax…

Q: Practical part: Q5) Draw the profile with horizontal scale 1:1000 and vertical scale 1:20, stations…

A: Given : Stations and their Elevations in metres. Horizontal scale = 1:1000 Vertical scale = 1:20…

Control Survey and Geodetic reductions

Control surveys or survey controls are used to establish reference points as a basis for various construction activities. Vertical and horizontal control points are to be established in a control survey to increase accuracy. After establishing the control points, all other types of surveys such as topographic, right-of-way, aerial mapping, construction layout, boundary surveys, and utility mapping can be worked upon so that control networks can be formed. The place from which the observations are made is called a survey station.