a raking shore would of been ideal however the pavement to external of the gable is only 2.0m wide so have to tie back through all the windows this is why i was building an internal birdcage??
Luis,
I think you will definitely need a design for a scaffold of this type (but then I would say that lol).
Seriously tho, raking shores, or shores of any kind are complicated and often made more so by the magnitude of the loads the scaffold needs to carry. In this case you are supporting the horizontal loads induced on/by the facade (wind + 5-10% of self weight).
Therefore the bracing in the scaffold is key, the main load will be induced from the outside, in (wind + s.wt) so the bracing will need to be of sufficient capacity to support this load and transfer it to a point of restraint. Unless the building is open then the only load acting outwards will be s.wt, so the overturning generating an uplift on the scaffold will be much less and you will probably be fine in this case.
Pricing this kind of job is tricky, you will either not put enough in and then lose your leg when you see the design or put too much in and then price yourself out. Jakdan is right, I would strongly suggest you persuade your client to get a design done first and price that.
B
Luis,
I think you will definitely need a design for a scaffold of this type (but then I would say that lol).
Seriously tho, raking shores, or shores of any kind are complicated and often made more so by the magnitude of the loads the scaffold needs to carry. In this case you are supporting the horizontal loads induced on/by the facade (wind + 5-10% of self weight).
Therefore the bracing in the scaffold is key, the main load will be induced from the outside, in (wind + s.wt) so the bracing will need to be of sufficient capacity to support this load and transfer it to a point of restraint. Unless the building is open then the only load acting outwards will be s.wt, so the overturning generating an uplift on the scaffold will be much less and you will probably be fine in this case.
Pricing this kind of job is tricky, you will either not put enough in and then lose your leg when you see the design or put too much in and then price yourself out. Jakdan is right, I would strongly suggest you persuade your client to get a design done first and price that.
B
An interesting point BMB, do you get many non scaffold clients coming to you for design? I only ask as we lost a job recently because they demanded I got the drawing which aroused my suspicions about all sorts, payment responsibility and the like. I usually find we have to speak to a designer first for a chat and rough price guide which is pretty good but would prefer just to price the clients drawing.