Serviceability Consideration for Steel Buildings


Standard steel buildings

Structural Element

Deformation

Max Limit

Loading

Main Frame

Vertical

Span/150

DL+LL Or DL+SL

Jack Beams

Span/240

DL+LL Or DL+SL

Roof Purlins

Span/150

DL+LL Or DL+SL

Mezzanine Beam/Joist

Span/240

DL+LL

Span/360

LL

Main Frame

Horizontal

E.Height/45

DL+WL

End Wall Columns

Height/90

WL

Wall Girts

Span/90

WL

  

Steel buildings with Block walls

Structural Element

Deformation

Max Limit

Loading

Main Frame

Vertical

Span/150

DL+LL Or DL+SL

Jack Beams

Span/240

DL+LL Or DL+SL

Roof Purlins

Span/150

DL+LL Or DL+SL

Mezzanine Beam/Joist

Span/240

DL+LL

Span/360

LL

Main Frame

Horizontal

E.Height/(45+R*55)(1)

DL+WL

End Wall Columns

Height/90

WL

Wall Girts

Span/90

WL

  

Steel buildings with Glazed walls

Structural Element

Deformation

Max Limit

Loading

Main Frame

Vertical

Span/150

DL+LL Or DL+SL

Jack Beams

Span/240

DL+LL Or DL+SL

Roof Purlins

Span/150

DL+LL Or DL+SL

Mezzanine Beam/Joist

Span/240

DL+LL

Span/360

LL

Main Frame

Horizontal

E.Height/(45+R*205)(2)

DL+WL

End Wall Columns

Height/90

WL

Wall Girts

Span/90

WL

  

Steel buildings with Cranes

Structural Element

Deformation

Max Limit

Loading

Main Frame

Vertical

Span/150

DL+LL Or DL+SL

Jack Beams

Span/240

DL+LL Or DL+SL

Roof Purlins

Span/150

DL+LL Or DL+SL

Mezzanine Beam/Joist

Span/240

DL+LL

Span/360

LL

Relative deflection of adjacent frames atpoint of support of UHC or MR beam

Bay/225

CR

Rigid Frame Rafters supporting UHC or MRbeams running laterally in the building

Sapn/500

CR

Crane Beam

Span/600

Crane Class(3) A,B,C

Span/800

Crane Class(3) D

Span/1000

Crane Class(3) E,F

Main Frame Carrying Pendant Operated

Horizontal

E.Height/100

DL+WL O DL+CR

Main Frame Crarrying Cab Operated

E.Height/240

DL+WL O DL+CR

End Wall Columns

Height/90

WL

Wall Girts

Span/90

WL

Crane Beam

Span/400

CR

(1) RW= (block height)/(Eave height)

(2) RG= (Glazed height)/(Eave height)

(3) Cranes class according to CMAA

Note: The maximum eave height to be considered while using this table is 9m. For EH>9m different limitations have to be used.


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