DDA JE Syllabus 2024, Download Official PDF @dda.gov.in

Surveying: Principles of surveying, working of properties, compass, and bearing, plane table surveying, theodolite traverse, adjustment of theodolite, leveling and contouring, curvature, refraction, permanent adjustment of dumpy level, methods of contouring and uses of a control map, tachymetric survey.

Soil Mechanics: Origin of the soil phase diagram, definitions of void ratio, porosity, degree of saturation, water content, the specific gravity of soil grains and unit weights, grain size distribution curves for different solids and their uses. Atterjerg’s limits, ISI soil classification, plasticity chart, coefficient of permeability, effective stress, consolidation of soils. Calculation of shear strength of soils, direct shear test, vane shear test, triaxial test, soil compaction, Lab compaction, Lab compaction test, moisture content and bearing capacity of soils, plate load test, standard penetration test.

Hydraulics: Fluid properties, hydrostatics, measurements of flow, Bernoulli’s theorem and its application, flow through pipes, flow in open channels, weirs, flumes, spillways, pumps, and turbines.

Environmental Engineering: Quality of water, source of water supply, purification of water, distribution of water, the need for sanitation, sewerage system, circular sewers, oval sewer, sewer appurtenances, surface water drainage, sewage treatments.

Structural Engineering: Theory of structures: Elasticity constants, type of beams, determinate and indeterminate, bending moment and shear force diagrams of simply supported, cantilever, and over hanging beams. Moment of area and moment of inertia for rect. & circular section, bending moment and shear stress for tee, channel and compound sections, chimneys, dams and retaining walls, eccentric loads, slope deflection of simply supported and cantilever beams, critical load and columns, torsion of circular section.

Concrete Technology: Properties, Advantages, and uses of concrete, cement aggregates quality, water cement ratio, workability, mix design, storage, batching, mixing, placement, compaction, finishing and curing of concrete, quality control of concrete, hot weather, and cold weather concreting, repair and maintenance of the concrete structure.

RCC Design: RCC beams: flexural strength, shear strength, bond strength, design of single reinforced beans, lintels, cantilever beams, double reinforced beams, one-way slabs, two-way slabs, isolated footings, reinforced brickwork. T-beams, columns, staircases, retaining walls, and water tanks (RCC design questions may be based on both the Limit State method and the Working Stress method).

Steel Design: Steel design and construction of steel columns, beams, roof trusses, and plate girders.