Week 2

Equipment Required

Part 1- Linear Surveying

1) Put two ranging rods into the ground, 20m apart.

2) Sight through the line created above and extend the line by a further 4m.

3) Run two tapes, one from the furthest rod (from the starting point) at 5m and one from the middle rod at 3m.

4) Where these two tapes meet, put a third rod into the ground. This rod will be perpendicular to the middle rod.

5) Place a rod 4m from the middle rod along the line, towards the starting rod.

6) Run two tapes at 5m each from the rod created in the previous step and the furthest rod from the starting point.

7) Check that the two perpendicular rods are aligned with the rod on the main line.

Part 2- Halving and Quartering

1) Put two rods in the ground, 20m from each other.

2) Sight through and extend the line created by the two rods by a further 20m.

3) Create a perpendicular offset of 3.431m from the middle rod.

4) 1) Create two new cords:

a. Between the start point and the rod created in step 3,

b. The rod created in step 3 and the end point,

Note: from this point forward, the document will group the cords, however when in the field, do one cord after another.

5) Measure halfway between each of the cords and create a perpendicular offset of 0.858 from the midpoint.

6) Create four more cords around the outer edges.

7) Create perpendicular offsets from the four cords at 0.215m.

8) Run a tape around the outside to check the final arc.

Final Practical Video