Hi all,
been helping a mate redo the garden for them and we have reached the pergola / shade sail support thing stage and could do with some help please.
We have got a number of galvanised box section steel lintels and we are going to build the frame out of these, three questions for you, first is for cladding two sides of these lintels (approx 90mmx70mm) to make I beams to build with. Was thinking western red cedar for this, say 140mmx35mm, using the tek type screws to fix, the lady of the house would like a finish on it so will have a good soak of something and will be off the ground and able to dry, would that be a stable / long lasting choice? Long lasting has been determined as 10-15 years by the way!
Question two is some of these steels are not long enough so we need to connect them together and the horizontals into the uprights, also to make some caps, We need a timber that we can make some inserts, shove half in each end of steel to be joined, cut a plate out of scrape to go over the join on the outside of steel and screw together, cladding over the top. Whilst I can make groves for rain and what not so the timber won't hold water anywhere it will still be timber in a metal tube outside, is this daft?! After many really useful posts by Richard I fear it maybe is but would using iroko say answer concerns there?
Finally if that all does sound like a plan where can I get 20 metres of western red PSE hopefully although I will spend days with a scrub and a No5 if I have too and 2m of iroko to those sizes anywhere round here?! Would be great if I could go get it, whilst the above may sound pricey this is the budget apart from £30 of turfs.
Of course I welcome better ideas / different timbers any thoughts welcome
Thanks,
Dean
been helping a mate redo the garden for them and we have reached the pergola / shade sail support thing stage and could do with some help please.
We have got a number of galvanised box section steel lintels and we are going to build the frame out of these, three questions for you, first is for cladding two sides of these lintels (approx 90mmx70mm) to make I beams to build with. Was thinking western red cedar for this, say 140mmx35mm, using the tek type screws to fix, the lady of the house would like a finish on it so will have a good soak of something and will be off the ground and able to dry, would that be a stable / long lasting choice? Long lasting has been determined as 10-15 years by the way!
Question two is some of these steels are not long enough so we need to connect them together and the horizontals into the uprights, also to make some caps, We need a timber that we can make some inserts, shove half in each end of steel to be joined, cut a plate out of scrape to go over the join on the outside of steel and screw together, cladding over the top. Whilst I can make groves for rain and what not so the timber won't hold water anywhere it will still be timber in a metal tube outside, is this daft?! After many really useful posts by Richard I fear it maybe is but would using iroko say answer concerns there?
Finally if that all does sound like a plan where can I get 20 metres of western red PSE hopefully although I will spend days with a scrub and a No5 if I have too and 2m of iroko to those sizes anywhere round here?! Would be great if I could go get it, whilst the above may sound pricey this is the budget apart from £30 of turfs.
Of course I welcome better ideas / different timbers any thoughts welcome
Thanks,
Dean