Adrian Doehring 100351866
College of Engineering and Technology
Department of Engineering
Programme Title(s): BEng (Hons) in Civil and Infrastructure Engineering
Programme Code(s): H293
Module Title: INFRASTRUCTURE DESIGN 2
Module Code: 5HX507
Lecturer: Derek Spalton
Assignment No: ONE
Assignment Title: DRAINAGE AND PAVEMENT DESIGN
Issue Date: 4th February 2016
Drainage Hand-in Date: 17th March 2016
Carriageway/Pavement Hand-in Date: 21st April 2016
http://content.paulreiffer.com/wp-content/uploads/2014/01/Over-The-Rainbow-Shanghai-Nanpu-Bridge-Long-Exposure-Night-LED-Lights-Paul-Reiffer-Professional-Landscape-Photographer@2x.jpg (03/03/2016)
Introduction of the assignment
The assignment is divided to two parts:
Part A
Will include: Drainage design with proposal alignment together with drawings / drainage calculations.
Part B
Will include: Traffic calculation, pavement design with carriageway, specification and CDM/environmental/economic point of view.
I will present my report as whole however there will be comment next to the title of part whether it belongs to part A or part B.
Table of contents:
1Traffic calculation
2Drainage design
3Drawings production and alignments
4Single carriageway and pavement design
5Specification
6CDM/Environment/Economic point of view
1. Traffic Calculations
Using traffic assessment HD 24/06
Given data/information:
Single Carriageway (S2)
Life = 20 years (New)
AADF = 5000
OGV1 = 400
OGV2 = 550
PSV = 200
The factor used to calculate the design traffic (T) are as follows:
-Commercial vehicle flow at opening (F)
-Design period (Y)
-Growth factor (G)
-Wear Factor (W)
-Percentage of vehicles in the heaviest loaded lane (P)
a) F = 400 + 200 + 550 = 1150 cv/d
550/1150 = 47.82 % ≈ 48% OGV2
b) We know Y = 20
c) Wear Factor for CV classes and categories from table 2.3
Thus => OGV1 + PSV for new WN= 1.0
OGV2 for new WN=4.4
d) Extracted growth factor (G) values assuming 1997 growth table:
For design period (Years)…………………………………………………………20
OGV1 + PSV…………………………………………………………………………..1.09
OGV2…………………………………………………………………………………….1.27
e) It is single carriageway so we are using P as 0.97
Finally our T is calculated below in the table:
Commercial vehicle class or category
AADF (F)
Growth factor
(G)
Wear factor
(W)
Weighted annual traffic (by class or by category)
Either by class buses and coaches (PSV)
OGV1
2 Axle rigid
3 Axle rigid
OGV2
4 axle rigid
3 and 4 axle artic
5 axle artic
6 axle artic
Or by category:
OGV1+PSV
600
550
1.09
1.27
1.0
4.4
654
3073.4
Total daily flow (cv/d)
1150
Total Weighted Annual Traffic
3727.4
Percentage of vehicles in heaviest traffic lane (P)
0.97
Design Period (Y)
20
Design Traffic (T)
26 MSA
Design Traffic (T) = Total weighted annual traffic x Y x P x 365 / 1000000 =
= (3727.4 x 20 x 0.97 x 365) / 1000000 = 26 .393 ≈26 MSA
2.Drainage Design
a)Introduction
The proposed solution is shown on the map below. The new road is starting from Markeaton Street and will be connect with Queensway . This part of the assignment will provide a proposed drainage system based on proposed road alignment and the actual level from field.
We are creating controlled system. The water is guided by pipes to a suitable outlet. The map is consistent with the direction of the north and the contours of existing ground level are on. The proposed single carriageway is 268.10m long and is 7.3m width, more details are shown on the drawings attached with the assignment.
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