ROOF

GUTTER DETAILING POINTS TO NOTE

  • Number and location of down pipes
  • Maximum drop from High point of roof to each down pipe
  • Maximum top of steel under each length of gutter
  • Drop required to provide 1:100 gradient.
  • ENOUGH SPACE IS AVAILABE FROM UNDERSIDE OF ROOF SHEET TO TOP OF STEEL TO PUT A GUTTER OF SPECIFIED DEPTH WITH A 1:100 GRADIENT

Gutter Depth

Gutter depth is specified at downpipe location. IF gutter cannot fit with full depth and gradient, it may be still possible to install gutter because at high end full depth may not be required as water flow at high end is normall proportionately lower. Must raise an RFI to confirm

 

 

 GUTTER DETAILING/lessonsLearned/GUTTER-DETAILING.pdf

Trimmer purlins are required when there are cut outs in roof so as to support the roof. No drawings will show the requirement of trimmer purlins.

Detailer must know where trimmer purlins are required and how to put them.

Generally trimmer purlins are run between purlins and connected with GP BRACKET.

But if trimmer purlins are around a concrete col then the purlins can be true bolted to concrete col

 TRIMMER PURLIN

Installing roof Flashing you tube video

http://youtu.be/j21lL9cNsag