The accompanying map, located on the back page of Section A, shows ground contours at five metre vertical intervals on a greenway - Leaving Cert DCG - Question C-1 - 2022
Question C-1
The accompanying map, located on the back page of Section A, shows ground contours at five metre vertical intervals on a greenway.
ABCD is the centrline of a propos... show full transcript
Worked Solution & Example Answer:The accompanying map, located on the back page of Section A, shows ground contours at five metre vertical intervals on a greenway - Leaving Cert DCG - Question C-1 - 2022
Step 1
Earthworks between A and B (Level, Sloping edge) - Embankment
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Draw parallel lines at 2.5m intervals from ground level at A to B, maintaining an altitude of 65m.
Identify intersections with contours and draw curves to represent the embankment profile.
Step 2
Earthworks between B and C (Level) - Embankment
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Draw parallel lines at 2.5m intervals from 65m at B to 65m at C.
Identify intersections with contours and draw curves as needed.
Step 3
Earthworks between C and D - Cutting
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Draw parallel lines at 5m intervals from 65m at C to 70m at D, marking the slope changes.
Identify intersections with contours and draw curves for the cutting.
Step 4
Profile on EF
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Measure and draw height lines at 5m intervals based on the previously drawn profiles.
Project intersections from curves to the vertical line EF.
Draw the main left portion of the profile from E to F.
Draw a level right portion of the profile parallel to the ground.
Draw the middle straight line portion of the profile connecting given heights.
Step 5
Maximum Height for Phone Mast
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Locate point F on the profile, and identify the tangent of the profile at that point.
Based on the line of sight from point F, determine the maximum height of the mast at point E while ensuring it does not exceed visibility at point F.
Join the Leaving Cert students using SimpleStudy...
