glass resistance and certificates

[gil]

When calculating a parapet should obviously take into account the resistance of the material used. For a glass parapet I think it is the same principle.
However, in the documentation and certificates of the plates only the breaking resistance class is reported according to uni 7697, i.e. a code such as “1b1” or “2b2”.
and then I ask myself is enough this value to establish that the resistance is suitable?
and how does the designer establish that a 1b1 glass has a resistance equal to or greater than that of design expressed for example in resistance to breakage of 35n/mmq?

I've been looking for some paper on it, but without any outcome. thanks to whom he had suggestions.

 

[Meteor02]

you care to establish the breaking load then turn to the glazing supplier that will direct you to the type of glass most indicated. Surely you will talk about a laminated glass at least 3 stars, but thickness and n° layers depend on the breaking load you want to get. as a safety class of glass I would say that the 1b1 does to your case is used for the risk of falling into the vacuum through the glass.

 

[Giacomo Lepore]

you care to establish the breaking load then turn to the glazing supplier that will direct you to the type of glass most indicated. Surely you will talk about a laminated glass at least 3 stars, but thickness and n° layers depend on the breaking load you want to get. as a safety class of glass I would say that the 1b1 does to your case is used for the risk of falling into the vacuum through the glass.

Three layers are used for walking glasses to avoid impact fractures. is it also used for parapets?

 

[gil]

turn to the glassmaker supplier that will direct you to the most indicated type of glass

They don't know a bat, they say, "We usually do this, because we've always done that," but I'm not able to justify why. They have no knowledge of the norms and cannot make a calculation. certificates are "paper" that sends the manufacturer and that they react without knowing whether inside there is a certificate or the playboy calendar

If you know someone who can provide information, I'd like you to send me a contact. a document / manual done well to me.

 

[Meteor02]

Three layers are used for walking glasses to avoid impact fractures. is it also used for parapets?

as much as I remember about a work done time ago also applies to the parapets since it remains the risk of falling into the void through the worm.

 

[Meteor02]

They don't know a bat, they say, "We usually do this, because we've always done that," but I'm not able to justify why. They have no knowledge of the norms and cannot make a calculation. certificates are "paper" that sends the manufacturer and that they react without knowing whether inside there is a certificate or the playboy calendar

If you know someone who can provide information, I'd like you to send me a contact. a document / manual done well to me.

I should still have something I used at the time tomorrow I give an eye if I find them I turn the files with their contacts. Unfortunately the work was then given outside and I do not know how it ended and with which supplier.

 

[Giacomo Lepore]

as much as I remember about a work done time ago also applies to the parapets since it remains the risk of falling into the void through the worm.

I mean something different.
if from the calculation comes out that you need a layered 5+8 with intercalare in pvb, if it is a horizontal glass I have to make 5+8+5. That's because if I'm standing on the glass and my hand hammer falls, it breaks the first layer and the two that by calculation are enough not to let me fall.

this is the method suggested by all class norms for pleasure vessels. if the glass is vertical the third layer is not necessary by virtue of its orthogonality to the gravitational field.

 

[gil]

for what I understood.
the glasses are certified according to uni7697 with codes for example “1b1”.

safety glass has mechanical performance higher than other glass, with a 33.2 class 1b1. with generic glasses serve more thicknesses for the same result, or do not reach them at all.

the resistance to the thrust of a parapet made with carrying glass depends not only on the glass, (type, height, thickness), but also on the type of connection between the loft and glass. They are therefore the latter to have to guarantee the scope.

under the technical sheet of a manufacturer in which a certified application is presented.
Obviously the glass must also be certified according to class of resistance suitable for use.
for this reason the tensile strength is not explicit in glass certificates, as is possible in iron bar certificates.

What if I want to make a glass loft?
in this case I have not found specific products that guarantee the result, as for the parapets. the calculation is required to the designer. but at this point I return to the starting point.

we make the example that through its analysis the stabilizer that serves a glass thickness 30mm with tensile strength at least 60n/mmq. How does it come from here to establish the type of glass?

 

[Giacomo Lepore]

we make the example that through its analysis the stabilizer that serves a glass thickness 30mm with tensile strength at least 60n/mmq. How does it come from here to establish the type of glass?

Ask a glassmaker. You should find one in mp.
thickness of 30mm does not mean anything. if it is monolithic is an account, if it has pvb (intercaling not collaborating) is another account, if it has a collaborating intercalare is another account yet.

the calculation of the resistance of the glass is standardized and is very complicated. is the result of a t-student applied to hydrostatic tests, otherwise use the minimum standard.