MapisM
Well-Known Member
Indeed. Framed in solid stainless steel and sliding - manually, of course.
Accept no substitute!
Is there too much glass in a modern hull now
- Thread starter paul salliss
- Start date
Accept no substitute!
Portofino
Well-Known Member
Which cars are these ?
Can not think of any .....loadsa metal chassis ( that takes all the strain ) with plastic bodies attached .But no plastic chassis or “hull “.
Lotus , Reliants , Matra , Renault A310:, Renault Spyder , even early Ferrari (76 mod y ) 308s vetroresina s .
Rappey
Well-Known Member
My point was meant to be that glass and grp can stay bonded for a long time while substaining a lot of twisting action and the adhesive can be protected from uv rays.
A fibreglass car such as a lotus esprit winscreen is an example of glass and grp bonding.
The screen is a very important part of the body shells rigidity.
Could having large areas of glass on a boat improve a boats stifness?
I'm also assuming these areas of glass on boats are bonded to grp and not a metal frame ?
Truro Ex Pat
Well-Known Member
Am I the only one who like the glass! I think its fantastic to have more windows, just like house building where we have seen bi folds and great panes of glass!
It gives a feeling of more space and saves having the lights on the lower cabins all the time as you cant see what you are doing.
It gives a feeling of more space and saves having the lights on the lower cabins all the time as you cant see what you are doing.
MapisM
Well-Known Member
I can't remember anyone saying they don't like it - I certainly didn't.
It's just a matter of weighing not only the wow effect, but also its technical drawbacks.
Pretty sure you wouldn't build a house where large glass windows are a structural component of its integrity, I assume.
Let alone doing that in a place where you know that there's a substantial earthquake every other week, which is akin to what happens with boats.
Btw, I disagree on your point ref. light, because in my experience the main problem inside a boat is to keep the sun out of it, rather than let it in.
I guess this can be different when boating at different latitudes, but still, nothing can beat staying outside, whenever you fancy light and air!
Rappey
Well-Known Member
I did a quick google and -
Thanks to technological advances and growing demand for structures with larger glazed surfaces, glass assemblies have slowly begun taking on an additional role as load-bearing systems.
Laminated glass fixes the uv problem.
So the biggest risk to glazed hulls would appear to be ribs ? ?
MapisM
Well-Known Member
Load-bearing doesn't mean anything.
Back in the early 90s, I designed a mezzanine for my lake home.
Its whole structure was fabricated in steel, but all walkable areas were made in glass.
So, I guess it's fair to say that those glass floor and steps are load-bearing.
But they are all removable - bolted on the steps, and simply resting on the steel tubes for the floor.
Essentially, the have zero contribution to the structure itself, which is only the steel part, that could work equally well with wooden or whatever surfaces.
That's not the way glass is used in modern boats, where large glass panels are fitted with structural sealants and become concurrent with the hull strength.
Not even the Shard is built that way!
Ref.UV, actually even tinted laminated glasses only filter no more than 30% of UV-A .
40% at best, for very dark glasses that practically defeat the whole purpose of glasses.
But aside from this (which btw I appreciate that can be counter-intuitive, but that's the way it is), did you ever try to keep your hand against the internal side of a large hull glass window, after it has been under the summer sun for some time?
Back in the early 90s, I designed a mezzanine for my lake home.
Its whole structure was fabricated in steel, but all walkable areas were made in glass.
So, I guess it's fair to say that those glass floor and steps are load-bearing.
But they are all removable - bolted on the steps, and simply resting on the steel tubes for the floor.
Essentially, the have zero contribution to the structure itself, which is only the steel part, that could work equally well with wooden or whatever surfaces.
That's not the way glass is used in modern boats, where large glass panels are fitted with structural sealants and become concurrent with the hull strength.
Not even the Shard is built that way!
Ref.UV, actually even tinted laminated glasses only filter no more than 30% of UV-A .
40% at best, for very dark glasses that practically defeat the whole purpose of glasses.
But aside from this (which btw I appreciate that can be counter-intuitive, but that's the way it is), did you ever try to keep your hand against the internal side of a large hull glass window, after it has been under the summer sun for some time?
burgundyben
Well-Known Member
You are right Cleggy, far too much glass, its ridiculous.
Rappey
Well-Known Member
Summer sun? Where? Haha. Have a quick read about what can be accomplished against heat and uv ..you may be surprised.
How to Prevent UV Fading
paul salliss
Well-Known Member
paul salliss
Well-Known Member
Reference the Galeon picture, I think it would be fine if the engines were removed and it was just a floating cottage, nothing wrong with that but it's a stupid looking boat in my opinion, but I am sure someone out there would love it
Momac
Well-Known Member
Correct. Glass is not used structurally in buildings - except to support itself and for secondary elements..
I doubt the glass is relied upon as structurally essential in boats although if bonded in it could add stiffness.
Portofino
Well-Known Member
Another source of “ earthquakes “ for the hull over and above bouncing about in a head sea , is the annual lift out .
Some yards for bigger stuff and indeed transatlantic transport float them on the ship to avoid slings or if a yard use a submersible sledged , then drag it out as much as possible supported ....well better than craning in slings .Ramp + sled is popular in Italy .
Not sure where the cut off is L wise .But there must be boats that bend in the middle or elsewhere popping window seals .
Similarly the blocking off might have a bearing on “ earthquake “ flexing .
The yard i used in Fr ,the operator taps the keel listening to the sound and adjusts the blocks the boats sits on back + forth before touch down .
Wonder if they have had there fingers burned ....owners dropping cracked / busted seal glazing on them ?
Sure they will be insured ....but all the same best try and avoid a claim fest .
May be many years ago it did not ( banana boat hulls ) even enter into the psyche of the lift operator ?
Realise this is a nerdy point lost on the hoards of swarming newbies on uber glazed boats all laid out with pretty ladies at boat shows .
Some yards for bigger stuff and indeed transatlantic transport float them on the ship to avoid slings or if a yard use a submersible sledged , then drag it out as much as possible supported ....well better than craning in slings .Ramp + sled is popular in Italy .
Not sure where the cut off is L wise .But there must be boats that bend in the middle or elsewhere popping window seals .
Similarly the blocking off might have a bearing on “ earthquake “ flexing .
The yard i used in Fr ,the operator taps the keel listening to the sound and adjusts the blocks the boats sits on back + forth before touch down .
Wonder if they have had there fingers burned ....owners dropping cracked / busted seal glazing on them ?
Sure they will be insured ....but all the same best try and avoid a claim fest .
May be many years ago it did not ( banana boat hulls ) even enter into the psyche of the lift operator ?
Realise this is a nerdy point lost on the hoards of swarming newbies on uber glazed boats all laid out with pretty ladies at boat shows .
Momac
Well-Known Member
deleted - duplicated
pumpsmynads
Well-Known Member
Not really.
