1. Draw the neat plan and section (along the short span) of a simply supported rectangular one-way slab with the following data. Also show the reinforcement details.

• Slab size 2.5 m x 6 simply supported on all the four edges on walls of 250 mm thickness.

• Main reinforcement 10 mm bars 150 mm C/C spacing

• Distribution bars 8 mm bars 200 mm C/C spacing

• Main reinforcement is bent up near the supports as per codal provisions.

The slab is cast with M 20 mix and Fe 415 steel.

2. Show the typical details of reinforcement in the sectional elevation of a square isolated footing supporting a column:

Size of the column =400 x 400 mm
Size of the footing =1.5 x 1.5 m

Thickness of the footing =250 mm

Show all types of reinforcements to be provided in the column and footing and label them.

Give the typical plan and sectional elevation of a double riveted double-cover butt joint. Take the thickness of the main plates as 12 mm and cover plate as 16 mm. Use 25 mm rivets 120 mm pitch. The plates are subjected to axial tensile force.

Give the typical line diagrams showing eccentric load connections (with rivets), and pure moment connections.

Discuss the relative advantages and disadvantages of DC (and AC) equipments used for welding.

Give a neat typical labelled sketch showing the details of adjustable ridger at the ridge line of truss.

Describe 'star connection' and 'delta connection' with the help of neat diagrams.

Describe the criteria for site-selection in order to provide a good earthing.

Describe the methods of improvement in Power Factor.

Describe in brief the principle of air-conditioning and draw the block diagram of air-conditioning process.

Describe 'Ductile detailing'.

Differentiate between any two of the following:

Under-reinforced and Over-reinforced sections

Rivets in Single shear and Double shear

Dog-legged and Halfturn stairs

8. Write short notes on any four of the following:

Slip form Shuttering

Beam to Column Connection

Solar Gain

UPS System

Raft Foundation