11-01-2013, 03:18 PM
DESIGN OF COMPRESSOR SHED
DESIGN OF COMPRESSOR SHED.pptx (Size: 106.02 KB / Downloads: 78)
INTRODUCTION
The project work consists the design of an industrial building that is design of compressor shed along with its all major components.
The compressor shed design is commenced with the design of roof truss considering the different kinds of loads (i.e., dead load live load & wind load) and each member of the truss is designed using different angle sections from steel tables.
Gantry girder on which crane is supposed to move is also designed taking the crane capacity into consideration.
Finally the columns footings are designed considering all the loads acting on to them. These columns are supported with a slab base whose design is also enclosed.
The entire steel design is done as per IS CODE 800-1984. The RCC footings are designed as per IS 456 CODE.
DESIGN OF ROOF TRUSS
Span = 15.534 m Rise = 3.6m
Slope of roof runs, ө = tan+ = 240 86’
Length of top chord = √(7.672+3.62) =8.56m
Dividing this length into four equal panels, length of each panel =8.56/4 = 2.14m.
Using standard A.C sheets which has max span 1.68 m which falls short of the panel length 2.14m.
Hence purlins have to placed at intermediate points and not at panel points.
Let us provide 8 purlins (or –Y Spaces) of spacing of 8.56 = 1.222 m leaving a gap of 60 mm at the apex 7
Slenderness ratio of component section:
Min radius of gyration of one channel ie ISMC 250 @ 0.298 kn/m
rmin = 23 .8mm
The column is composed of two channels.
Slenderness ratio of component column =
And 0.6
hence safe:
22mm nominal dia power driven rivets are used for connection of lacing
Width of lacing flat = 65mm
Length of lacing = 250 =353.5mm
Thickness of lacing = x 250 =5.89 8mm
Adopt lacing flat 65 f8
Sectional area of flat = 65 x 8= 520mm2
Minimum radium of gyration= =