30 May 2007

REECE PLUMBING




Reece plumbing in North Geelong is a skillion type portal frame building where the roof pitches in one direction with a span of 15m - 20m.




The UB rafters are rigidly fixed to the columns using plates welded to the end of the rafter and bolted.


Diagonal rod bracing penetrate the web of the UB rafter and is tensioned by a bracket on the other side of the flange.


Lighter gauge C purlins fixed to cleats welded to the top flange of the UB rafter support safety mesh, sarking and the roofing.




Each of the columns is tied to each other using a Parallel Flange Channel PFC bolted to a cleat welded to the web of the column. This ensures that the portal frame is braced in both directions and beding moments are transfered to the bracing bay.


Equal angel fly bracing fixed to a cleat welded to the web of the UB rafter helps to stabilse the UB and prevent it from twisting mid point and aid in the longitudinal bracing of the portal frame.

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Introduction

I passed this site just after Christmas on my push bike. At first glance it appeared to be an ubiquitous portal frame. However the shining relfections from the frame signalled that it was different. The portal frame was not your normal hot rolled steel UB section but cold rolled. The type you usually see in those kit garages and barns, but this spans 20m!