MEP201 Mechanical Engineering

Drawing1st semester 2005-2006

S R Kale. --- Lecture #1

Types of Drawingsand their uses in

Engineering Projects

Lec. 1 - Drawing types 2

Until now : Machine Drawings

Prepared and used by• Mechanical engineer• ME diploma holder• Machinists, fabricators, welders,

assemblersEnd result• Component, (sub)assembly drawing(s)• After manufacturing – component,

sub(assembly) or machine

Lec. 1 - Drawing types 3

Next step

Someone uses the machineNot interested in component level

detailsNeeds overall information about the

machineNeeds different types of information

Lec. 1 - Drawing types 4

Types of drawings

• General Arrangement / Layout drawing• Schematic / Process flow diagram / Flow

diagram• Process and Instrumentation (P & I)

Drawing• Control system diagrams• Piping drawing• Wiring diagrams• Process engineering drawings• Project management drawings

Lec. 1 - Drawing types 5

Example from engineering 1 MINI BAJA

Bought out – engine, variable drive, brakes,

tyres, steering column, shockers, +

Manufactured – frame, drive, suspension, +

Put them together AND make them work for the race (just like F1)

Lec. 1 - Drawing types 6

Example from engineering 2 CSC AIR CONDITIONING PLANT

Bought out – compressor, motor, heat exchanger, pumps, cooling tower, valves, switchgear, instruments, blowers, belts, controls, +

At site by others – foundation, building, …

Fabricated by vendor – frame, pipes, +

Pictures of CSC A.C. plant room – slide showAssemble AND make them work 365 x 24 x 7

Lec. 1 - Drawing types 7

Example from engineering 3 BADAGRAH NALLA

MINI HYDRO-ELECTRIC PLANT

Visit on 28 June 2004

Lec. 1 - Drawing types 8

Users of these drawings

• Civil engineers• Architects• Electrical engineers• Chemical engineers• Machine builders• Plant designers• Fitters, welders, masons, machinists, • Plus …

Lec. 1 - Drawing types 9

Lecture Summary

• Besides machine drawings, there are several types of drawings;

• Information about machines - to be communicated with non-ME engineers as well as non-engineers;

• Integrating role;• Inter-disciplinary nature of technology