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Environmental Impacts - Environmental Engineering - Old Exam Paper, Exams of Environmental Science

The Tamil Nadu Dr. M.G.R. Medical University Environmental Science

Main points of this past exam are: Environmental Impacts, Construction of Motorway, Public Transportation System, Cost-Benefit Analysis, Supply-Side Traffic Congestion, Manual Traffic Count, Origin-Destination Survey

Typology: Exams

2012/2013

Uploaded on 03/27/2013

naseem 🇮🇳

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CORK INSTITUTE OF TECHNOLOGY

INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ

Semester 2 Examinations 2011/12

Module Title: Environmental Engineering 1

Module Code: CIVL7006

School: Building and Civil Engineering

Programme Title: Bachelor of Engineering in Civil Engineering

Programme Code: CCIVL_7_Y3

CCIVE_7_Y3

External Examiner(s): Ms M Kyne, Mr JT Murphy

Internal Examiner(s): Mr TL O’Driscoll

Instructions: Answer two questions from each section.

Duration: 2 hours

Sitting: Autumn 2012

Requirements for this examination:

Note to Candidates: Please check the Programme Title and the Module Title to ensure that you have received the

correct examination paper.

If in doubt please contact an Invigilator.

Discover Exams of Environmental Science The Tamil Nadu Dr. M.G.R. Medical University

Partial preview of the text

Download Environmental Impacts - Environmental Engineering - Old Exam Paper and more Exams Environmental Science in PDF only on Docsity!

CORK INSTITUTE OF TECHNOLOGY

INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ

Semester 2 Examinations 2011/

Module Title: Environmental Engineering 1

Module Code: CIVL

School: Building and Civil Engineering

Programme Title: Bachelor of Engineering in Civil Engineering

Programme Code: CCIVL_7_Y 3

CCIVE_7_Y

External Examiner(s): Ms M Kyne, Mr JT Murphy

Internal Examiner(s): Mr TL O’Driscoll

Instructions: Answer two questions from each section.

Duration: 2 hours

Sitting: Autumn 2012

Requirements for this examination:

Note to Candidates: Please check the Programme Title and the Module Title to ensure that you have received the correct examination paper. If in doubt please contact an Invigilator.

Section A

A1(a) List a number of environmental impacts that may occur due to the construction of a new

motorway. Describe methods that may be used to mitigate these affects. (15 marks)

A1(b) Describe the primary issues and methodologies used when assessing a cost-benefit analysis

of a proposed public transportation system.

(10 marks)

A2(a) Discuss supply-side traffic congestion management methods that may be used to reduce

traffic congestion in cities. (10 marks)

A2(c) Describe the BRT system as is used in a number of cities throughout the world. What are

the advantages and disadvantages of this system? (15 marks)

A3(a) Explain the following traffic count methods, including a description of advantages and

disadvantages of each:

 Manual traffic count.

 Pneumatic tube mechanical count.

 Origin-destination survey.

(9 marks)

A3(b) Discuss the importance of the link between transportation planning and spatial/town

planning of urban areas. Include in your discussion how transportation network plans affect

the way that cities and towns should be set out and planned? Use any examples you may

know of to support your answer.

( 8 marks)

A3(c) What are the primary causes of fatal road collisions in Ireland? Describe methods that are

used to attempt to reduce each.

(8 marks)

QBAR= 0.00108AREA0.89SAAR1.17SOIL2.

Units: QBAR (m

/s); AREA (km

); SAAR(mm); SOIL(no units)

RETURN PERIOD (YEARS)

DURATION 2 5 10 20 30 50 75 100

5 mins 4.0 5.7 7.0 8.5 9.4 10.8 12.0 12. 10 mins 5.6 7.9 9.8 11.8 13.1 15.0 16.7 18. 15 mins (^) 6.6 9.3 11.5 13.9 15.5 17.7 19.6 21. 30 mins 8.5 11.8 14.4 17.2 19.0 21.5 23.8 25. 1 hours 11.0 15.0 18.0 21.3 23.4 26.2 28.8 30. 2 hours 14.3 19.1 22.5 26.3 28.7 32.0 34.8 37. 3 hours 16.7 21.9 25.7 29.8 32.4 35.9 38.9 41. 4 hours 18.6 24.2 28.2 32.5 35.3 39.0 42.2 44. 6 hours 21.6 27.8 32.2 36.9 39.8 4 3.8 47.2 49.

Table 1: Rainfall depths for various durations

B3(a) Describe in detail a number of SUDS systems that may be used within a new apartment

development in a city centre area. The site must be designed to optimise space for

apartments and parking.

(10 marks)

B3(b) A storm-water sewer is to be designed to cater for runoff from a new housing development

as shown in Figure 1. Design the sewer in Figure 1, for a return period of 5 years. Indicate

the pipe diameters & manhole invert levels using the attached Table 2. Use table 1 (above)

to calculate rainfall intensities. (15 marks)

Design Assumptions

(i) Assume Time of Entry of 4 minutes.

(ii) For pipe network design, assume 100% runoff from paved and roof surfaces, and 0% from

pervious surfaces, as per GDSDS recommendations.

(iii) Use the modified rational equation as follows: Q = 2.78 Cv.Cr.I. A where : Q is the flow in L/s,

I is rain intensity in mm/hr and A is the impermeable area in Ha. Cr = 1.3. Cv = PR/

(iv) Minimum and maximum velocities are 1m/s and 3 m/s respectively, for pipe flowing full.

(v) For pipeline design, see Attachments 1: Colebrook White Chart with Ks = 0.6 and pipe design

sheet.

Table 1

Pipe Nr Pipe length (m) Time of Entry (mins) Time of flow (mins) Time of Conc (mins) Imp Area (ha) Total Imp Area (ha) Rain (mm/hr)

Q

(L/s) Diameter (mm) Pipe-full Velocity (m/s) Slope (m/m) Fall (m) Capacity (L/s) Upstream IL (mOD) D/stream IL (mOD) 1.1 56 0. 1.2 63 1. 2.1 95 0. 1.3 75 1.

OUTFALL

IL 31. 5 1mOD Pipe 2. Pipe 1. Pipe 1. Pipe 1.

MH A

GL 36.26mOD MH B GL 35. 9 mOD

MH D

GL 35.652mOD

MH C

GL 36.6 5 mOD

Environmental Impacts - Environmental Engineering - Old Exam Paper, Exams of Environmental Science

Related documents

Partial preview of the text

Download Environmental Impacts - Environmental Engineering - Old Exam Paper and more Exams Environmental Science in PDF only on Docsity!

CORK INSTITUTE OF TECHNOLOGY

INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ

Semester 2 Examinations 2011/

Module Code: CIVL

School: Building and Civil Engineering

Programme Title: Bachelor of Engineering in Civil Engineering

Programme Code: CCIVL_7_Y 3

CCIVE_7_Y

External Examiner(s): Ms M Kyne, Mr JT Murphy

Internal Examiner(s): Mr TL O’Driscoll

Instructions: Answer two questions from each section.

Duration: 2 hours

Sitting: Autumn 2012

Requirements for this examination:

Section A

A1(a) List a number of environmental impacts that may occur due to the construction of a new

motorway. Describe methods that may be used to mitigate these affects. (15 marks)

A1(b) Describe the primary issues and methodologies used when assessing a cost-benefit analysis

of a proposed public transportation system.

(10 marks)

A2(a) Discuss supply-side traffic congestion management methods that may be used to reduce

traffic congestion in cities. (10 marks)

A2(c) Describe the BRT system as is used in a number of cities throughout the world. What are

the advantages and disadvantages of this system? (15 marks)

A3(a) Explain the following traffic count methods, including a description of advantages and

disadvantages of each:

 Manual traffic count.

 Pneumatic tube mechanical count.

 Origin-destination survey.

(9 marks)

A3(b) Discuss the importance of the link between transportation planning and spatial/town

planning of urban areas. Include in your discussion how transportation network plans affect

the way that cities and towns should be set out and planned? Use any examples you may

know of to support your answer.

( 8 marks)

A3(c) What are the primary causes of fatal road collisions in Ireland? Describe methods that are

used to attempt to reduce each.

(8 marks)

QBAR= 0.00108AREA0.89SAAR1.17SOIL2.

Units: QBAR (m

/s); AREA (km

); SAAR(mm); SOIL(no units)

RETURN PERIOD (YEARS)

DURATION 2 5 10 20 30 50 75 100

Table 1: Rainfall depths for various durations

B3(a) Describe in detail a number of SUDS systems that may be used within a new apartment

development in a city centre area. The site must be designed to optimise space for

apartments and parking.

(10 marks)

B3(b) A storm-water sewer is to be designed to cater for runoff from a new housing development

as shown in Figure 1. Design the sewer in Figure 1, for a return period of 5 years. Indicate

the pipe diameters & manhole invert levels using the attached Table 2. Use table 1 (above)

to calculate rainfall intensities. (15 marks)

Design Assumptions

(i) Assume Time of Entry of 4 minutes.

(ii) For pipe network design, assume 100% runoff from paved and roof surfaces, and 0% from

pervious surfaces, as per GDSDS recommendations.

(iii) Use the modified rational equation as follows: Q = 2.78 Cv.Cr.I. A where : Q is the flow in L/s,

I is rain intensity in mm/hr and A is the impermeable area in Ha. Cr = 1.3. Cv = PR/

(iv) Minimum and maximum velocities are 1m/s and 3 m/s respectively, for pipe flowing full.

(v) For pipeline design, see Attachments 1: Colebrook White Chart with Ks = 0.6 and pipe design

sheet.

Table 1

Q

OUTFALL

MH A

MH D

MH C

Figure 1