Project 1

Aim: To model & design a proposed coil centre, Chennai using STAAD. Pro

Procedure:

A) For main frame and gable frame:

Open STAAD- define nodes and beams as per data> G to translation assign bay spacing.

For Area1- 30m width

roof slope=1/10=0.1

Height of roof in top level=1.5.

• Add walls>Add walls Sheeting>add roof sheeting.

• Add propertiess>Go to preoperties section database> add and assign section to structure.

• Go to support>create support>add and assign support>fixed base and pinned base.

• Go to landing>add load definition and load case details>assign loads to the structure.
• Total DL=4.5+1.5+1.5+0.75= 8.25 KN/m
• Total LL=22.5+7.5+3.75+7.5=41.25 KN/m
• Total Coll load=0.15x30=4.5 KN/m
• Total Win Load=184 Kmph=50m/s
• Internal Pressure Coefficient=+/-0.5
• External Pressure Coefficient:

-0.9

-0.4

-0.8

-0.4

• As per given data

Design wind speed=Vb x k1 x k2 x k3 x k4

=50x1x0.94x1x1.15

=54.05 m/s

• Wind Pressure=0.6x54.05^2

= 1.75 KN/m^2

• As per IS 875 Wind direction factor Kd=1
• Area averaging factor Ka=0.83
• Combination factor Kc=0.9

Design wind pressure=1.75 x 1 x 0.83 x 0.9=1.307 KN/m^2

Wind Pressure=0.6 x 54.05^2=1.75 KN/m^2

• As per IS 875 Wind direction factor Kd=1

Area averaging factor Kc=0.9

• Combination wind pressure=1.75x1x0.83x0.9=1.307 KN/m^2

Wind load=1.307x11.1=14.50 KN/m

O+CPI=14.50+0.5-0.9=14.10 KN/m

O-CPI=14.50-0.5-0.9=13.10 KN/m

90+CPI=14.50+0.5-0.8=14 KN/m

90-CPI=14.50-0-0.8=13.2 KN/m

• Seismic Load=

EQ+X

EQ-X

EQ+Z

EQ-Z

• Add load combinations> Go to load combination add as per strength and servicebility criteria.

• Go to design>add design parameters>Use IS 800: 2007
• After Run analysis and check deflection and section safe results.

B) For Gable frame

Open Staad>define nodes and beams as per given data>Go to translation assign bay spacing.

For gable frame analysis and design for one frame.

• For Area1=30m width
• Roof slope=1/10=0.1

Height of roof in top level=1.5m

Add walls>Add wall sheeting>add roof sheeting

Add properties> Go to properties section database>add and assign section to structure.

• Go to support> Create support> add and assign support>fixed base and pinned base
• Go to loading>add load definition and load case details>assign loads to structure.

• Total DL=4.5+1.5+1.5+0.75= 8.25 KN/m
• Total LL=22.5+7.5+3.75+7.5=41.25 KN/m
• Total Coll load=0.15x30=4.5 KN/m
• Total Win Load=184 Kmph=50m/s
• Internal Pressure Coefficient=+/-0.5
• External Pressure Coefficient

-0.9

-0.4

-0.8

-0.4

• Combination factor Kc=0.9

Design wind pressure=1.75x1x0.83x0.9=1.30725 KN/m

As per given data

Design wind speed=Vb x K1 x K2 x K3 x K4

=50x1x0.94x1.15

=54.05 m/s

Wind Pressure=0.6x54.05^2=1.75 KN/m^2

• As per IS 875 Wind direction factor Kd=1
• Area averaging factor Ka=0.83
• Wind load=1.307x11.1=14.50 KN/m
• O+CPI=14.50+0.5-0.9=14.10 KN/m
• 14.50+0.5-0.4=14.6 KN/m
• O-CPI=14.50-0.5-0.9=13 KN/m
• 90+CPI=14.50-0.8=14 KN/m

=14.50+0.5-0.4=14.6 KN/m

=14.50-0.5-0.4=13.6 KN/m

• Seismic Load=

EQ+X

EQ-X

EQ+Z

EQ-Z

Add load combinations>Go to load combination add as per strength design and servicebility criteria.

Go to design>add design parameters>Use IS 800:2007

After run analysis and check deflection and section safe results.