(SEM VI) THEORY EXAMINATION 2024-25 TRANSPORTATION ENGINEERING

BCE602 – TRANSPORTATION ENGINEERING

Time: 3 Hours | Max Marks: 70

SECTION A – Short Answer (Attempt ALL)

2 × 7 = 14 marks

Write definition + 1–2 key points / formula

Modes of Transportation & Mediums

Road (land), Rail (land), Waterways (water), Airways (air), Pipelines (underground)

Factors Controlling Road Alignment

Obligatory points, traffic, terrain, economy, safety, drainage, environment

Camber

Cross slope for drainage

IRC value for bituminous pavement (heavy rain): ~2.5% (1 in 40)

Traffic Volume vs Traffic Density

Volume: vehicles per unit time                           Density: vehicles per km length

Time Mean Speed vs Space Mean Speed

TMS: average of spot speeds                             SMS: average over road length (SMS < TMS)

Modulus of Subgrade Reaction (k)

Pressure per unit deflection

Evaluated by Plate Load Test

Flexible Pavement Layers (Sketch)

Wearing course, Binder course, Base, Sub-base, Subgrade

SECTION B – Medium Answer (Attempt ANY THREE)

7 × 3 = 21 marks

Write concept → explanation → examples/diagrams

1. Jaykar Committee Recommendations

Central Road Fund (fuel cess)                                        IRC formation

Road research & standardisation                                  Long-term road planning

2. Gradient: Definition & Classification (Plain Terrain – IRC)

Ruling, Limiting, Exceptional, Minimum                   Typical values (plain terrain):

Ruling ≈ 3.3% (1 in 30)                                             Limiting ≈ 5% (1 in 20)

3. Origin & Destination (O&D) Studies

Methods: Roadside interview, License plate, Home interview, GPS

Explain one method + data presentation (tables, desire lines)

4. Flexible Pavement Design (IRC 37)

Traffic estimation (msa)                                             Subgrade CBR

Layer thickness selection                                           Design life, reliability

5. Equipment for Excavation & Compaction

Excavation: bulldozer, excavator                               Compaction: rollers (smooth, sheep foot, pneumatic)

SECTION C – Attempt ANY ONE

7 × 1 = 7 marks

(a) 20-Year Road Development Plans (India)

Nagpur (1943–63)                    Bombay (1961–81)                         Lucknow (1981–2001)

Vision plans: connectivity, density targets

(b) Road Length Calculation (Numerical – Census Data)

Use standard planning formulas                                                     Find NH, SH, MDR, ODR, VR lengths