SECTION-A
UNIT-I
Highway Plans, Highway Alignment and Surveys
Main features of 20 years road development plans in India. Requirement of an ideal high way alignment.
Factors affecting alignment, Surveys for high way alignments.
Classifications of roads. Objectives of highway planning. surveys Saturation system of planning.
UNIT –II
Cross section elements and sight distance considerations.-Cross section elements, friction, carriage way,
formation width, land width, camber,IRC recommended values. Types of terrain design speed, sight
distance ,stopping sight distance, overtaking sight distance ,overtaking zones, intermediate sight distance
,sight distance at inter sections, head light sight distance, set back distance.Cirtical locations for sight
distance.
SECTION-B
UNIT –III
Design of horizontal and vertical alignmentsEffects
of centrifugal force. Design of super elevation. Providing super elevation in the field.Radiuos of
circular curves. Extra widening. Type and length of transition curves.Gradiednt, types, values.Smmit
curves and valley curves, their design criterions. Grade compensation on curves.
UNIT-IV
Traffic characteristics and traffic surveys, road user and vehicular characteristics .Traffic studies such as
volume, speed and O & D studies. Parking and accident studies. Fundamental diagram of traffic flows.
Level of service.PCU.Capacity for non urban roads. Causes and preventing measures for road accidents.
SECTION-B
UNIT –V
High way materials
Sub grade soil evaluation, CBR test, plate bearing test, desirable properties of aggregatesa,various testes
,testing procedures and IRC/IS specifications for suitability of aggregates
Types of Bituminous materials.
Bitumen,tar, Cut back,emulsions. Various tests, testing procedures and IRS/Is specifications for stability
of bituminous materials in road construction.Bitumenous mix, desirable properties.Marshell method of
mix design. Basic concept of use of polymers and rubber modified bitumen in bituminous mixes.
SECTION-C
UNIT –VI
Rail way Transport
System of rail ways ,permanents ways, components ,requirements of gauge, gauge, types of gauges ,rails,
function of rails ,composition ‘types of rails, length of rail, rail joints, type of rail joints, coning and
wheel,tilting,failure of rails, creeps wearing,buckling,welding,Sleepers,Types of sleepers
Functions,Requirements,Ballasts,Functions,Types of ballast size and sections, and quanties,fixure and
fastening,function,typr of fastening,requirements,spikes,types of spikes,bolts,keys,.
SECTION-D
UNIT-VII
Track geometries,gradients,types of gradients,curves,types of curves, super elevations, relation super
elevation with gauge ,speed and radius of curves, pointing crossing, technical terms, turn out,switches,type
of switches,crossings,type of crossing,junction,type of junction,plating,method of platting, relaying of
track, method of relaying of track, railway station,purpose,site selection,requirements,classification of
stations,yards,classification of yards, necessity of equipments, level crossing,signals,classification of
signals,interlocking,method of inter locking, Maintenance and drainage, classification of maintenance.
UNIT –VIII
Tunnels-Necessity of tunnels, classification of tunnels, shape of tunnels, cross section of tunnels,
surveying of tunnels, shafts, purpose of shafts, constructionofshafts, lining of tunnels, types of lining,
construction of lining and methods of lining. Maintenance and drainage of tunnels.