VERTICAL ALIGNMENT Design a vertical alignment of the centre line of the road showing grades and verticalcurves. The vertical alignment must meet the following criteria: The road must start at RL 15.5 and must finish exactly at RL 28.0 at the chainage you have calculated as being the end of the road. The first IP of the vertical design must lie at Chainage 110 and RL 8.68. After that you must complete the vertical design using two (2) (or three at most) rising grades and one falling grade, which generally follow the land surface. You must aim to keep the road (i.e. the cut or fill) within 1.5m of the natural surface. If this cannot be achieved in a maximum of four new grades, complete your design using four grades and then make a brief report and explain where the road has excess cut or fill and by how much. The maximum grade allowed at any point along the road is 10%. Vertical curves must have lengths of only 60m, 80m or 100m. The I.P. of each vertical curve must be located at an even 10m chainage (i.e. 120, 350 etc. and must not be placed at odd locations such as 376.5). All grades used must be to no greater precision than 0.1%, except for the final grade to the end of the line. (i.e. grades such as 3.1% must be used for every grade, except the final one where additional decimal places may be shown, if necessary, to ensure that the Design RL meets the set RL. Complete the table with your vertical curve calculations for the design levels. Calculate the Design Levels at every 10m of running chainage along the road. Also calculate the chainage (to 2 d.p.) and RL of the low point of the road at the river crossing. River and River Crossing Information The banks of the river where the road crosses it are at R.L. 9.8 At the river crossing, the design level of the road must be between 1m and

2) VERTICAL ALIGNMENT (24 MARKS; 18 for Design Levels, 6 for Low Point) Complete this table by calculating the design level at every 10m of running chainage. Please indicate the TPs and IPs of each VC in the chainage column with the chainage. (e.g. 320 TP, 360 IP) Your longsection must be pasted at the end of this answer file. Where possible please scan it. (Please complete the chainages in the table as necessary for your unique design).

CHAINAGE GRADE GRADE LEVEL ORDINATE DESIGN R.L.

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