Hi All,
We have two large (2.3M) folding doors on the first floor which needs balustrade/juliette balcony.
We are getting glass juliette balcony without top restraint from the company supplies those doors. I will be bolted to the door itself with M8 bolts rather than the wall structure directly.
However, when we supplied the details to BC, as he requested to review in advance, he has come back with below;
Juliet Balcony Minimum Height
· In a domestic setting, ensure the balustrade is a minimum height of 1.1m from floor finish to the top of the balustrade.
Juliet Balcony Balustrade Fixings
· All fixings to balustrades with top resistant or top handrail restraint must be inspected.
· All connections must be rigorous and bolted through to a structural inner leaf member. If in doubt, you can request the SE provides a calculation and/or specification.
· Minimum fixing accepted, is 1No M10 bolt, bolted through a structural post, passing through a 50mm x 50mm x 2.5mm square or circular galvanised steel washer, and bolted.
Juliet Balconies with Top Restraint up to a span length of 2.5m – With a Max Floor to ceiling height of 3m.
· Engineer/client to provide documents or calculations confirming the balustrade can resist the imposed horizontal loads it is spanning and provide connection calculations and/or specification for the fixings into the structure, as well as calculations and/or specification for the structure the balustrade is fixed to.
· Minimum structural post strength accepted, that the balustrade is fixed to is, a triple 100mm x 50mm bolted together with M10 bolts @ 400 c/c vertically.
· Top bolted fixing is to be a minimum of 0.9m above the finish floor level and a maximum of 1.2m above the finish floor level.
Juliet Balconies with no Top Restraint
· All Juliette Balcony balustrades which act as cantilevers (i.e. no top restraint) are to have structural calculations or documents provided by the SE, confirming the balustrade can resist the imposed horizontal loads.
· Calculations provided must show how the overturning moment, due to the imposed horizontal loads at the base of the balustrade, is resisted, how the base of the balustrade is fixed into the structure and how the structure resists overturning moment.
His comments were if we follow the guidance above it would be acceptable, if not then we would need to justify it and supply calculations from competent structural engineer to make our case. Which he suggests a painfull/stresfull process.
We at least would like to get framless glass balustrade, if we can`t get the current option accepted (atatched).
Has anyone run into issues with BC when putting up a glass balustrade without top restraint ? What are your thoughts on this?
I would like to avoid anything to do with struclural engineer if possible.
Skyforce S10103 - OnLevel Ltd - Balustrade Testing Report v2.0.pdf