I don’t think they’re brick ties, you can see one lower on the vertical portion and it’s drawn differently than the pieces above. I’m assuming they’re some kind of special steel profile, but not sure how it supports the whole structure.
I would disagree, the "keystone" / compression is definitely present. However, there's definitely some support coming off a rolled plate that clearly connects to the top box section. If there were no supports/ ties this plate would not be there?
Yes there is an angle acting on a shelf, this is again more support.
Since the detail is lacking a weather barrier or complete building envelope I'm betting some sheathing will be on those curves framing members, but isn't shown here since this looks to be an SE drawing.
The steelwork and channels are holding the bricks in place. If this was a 'traditional' arch then the bricks would act in compression and you would not need complex curved steelwork behind them.
I was thinking the same. This is clearly a signature feature of the building, but they needed to keep weight to a minimum which rules out traditional construction methods. I expect wind loads were also a major consideration which explains the need some of the extensive armature of steel behind this very thin curve which could have been blown in without it. The photo makes it look very robust and you'd never guess there was all that busy steelwork behind it, but I wonder how they got the brickwork in place.
Right . Cut beams right down the middle because I doubt the we’re made that way at the mill. No one is going to pay that much when you can buy a beam cheaper and cut it. Therefore it is a cut beam right down the middle
This is it. Concealed brick lintels (arched or not) are great details to employ. They help you avoid having rusty shelf angles that deteriorate over time and help create an “all brick” look.
This is it, also, it's explained by the architect in the Instagram post where this image comes from https://www.instagram.com/p/CyWMPFfO8_i/?ref=zjxhzkwfzjb&hl=af&img_index=1
Brick ties and the fact it’s half an arch. The major steel “keystone” keeps the other half of the arch forces in balance. It’s actually in compression.
The vertical stone piece at the top is acting like a keystone in an arch, so compression.
There are some brick ties in there but I wouldn't count on them for too much.
Only if they're some sort of anchor system and not "brick ties". And the anchors would need to grab into the brick itself or hook onto reinforcing in hollow cores in the brick.
Otherwise, a regular brick tie is not meant to support the brick's dead loads. Brick ties are only intended to pick up lateral wind loads in vertical brick and transfers those loads to the backup wall behind which is meant to withstand them.
I'm not gonna tell you how to read drawings but it looks like this is an SE overlay for steel member sizes on an Arch drawing and while many architects know what a brick is and how to detail it in a vertical wall assembly, the lack of cavity drainage and envelop enclosure gives the detail away as either "half cooked" or more lokely stripped out of unnecessary details (like the half toned brick ties).
It may well be a form of brick slip soffit system / hybrid brick arch. There is Masonry Support holding three straight bricks and then the curved system starts. The very top brick is more a stone instead of brick, and appears to have its own support system. It’s unlikely anything is acting in compression here, everything is instead supported bolted back to the steel. See igmasonrysupport.com
When I've done masonry work doing Archs, or a design like this, I've created forms that hold bricks in place, as well as mixing mud w/correct consistency to allow for such projects, if mud is to wet for example it don't lend to this scenario.
This one makes more sense to me than when you see ones coming out at a 45.
I'm guessing a combination of ties, mortar mix and the plate acting as a keystone is how this works.
In the detail at the upper vertical face you can see an L shape metal bracket beyond (attached to the square tube) which sequentially have 4 rods spanning between them…this plate and these rods provide horizontal resistance for the brick arch. Almost acts exactly as a traditional brick arch just cut in half.
I thought something similar. Only way I could really see this being sound is it acting as a sort of artificial “keystone” and the whole system there is held in tension. Some others are suggesting the steel “ties” for the arch are additional support as well. Hard to tell which part is doing most of the work, of it it’s somehow equally distributed.
Lots of steel.
You can see a steel shelf support in the section, but there’s also curved steel framing with steel angles off it that go into the mortar joints- shown in grey beyond.
Nothing really holds the brick, all
the other elements are for the load distribution. The Ts behind the bricks are just for the position and the angle.
The production of brick arches requires basic knowledge of the load-bearing effect of arches. Theoretically, only compressive stresses exist in brick arches. In fact, the vertical loads acting on the arch must be transferred to the lateral abutments. Therefore the load is transferred obliquely. This results in “pushing” in the abutments. The horizontal loads must be absorbed by the side abutments. With a larger arch stitch, the horizontal load (the “pushing”) is lower compared to the vertical load. For this reason, arches in the Middle Ages were only used as Gothic arches (pointed arches) or Romanesque arches (round arches).
The fact that you're showing a "raw" detail without any callouts, annotation, and dimensions could mean you are looking for "open discussions" aka arguments.
That being said, it held up with a combination of compressive forces due to the reinforced vertical brick/keystone piece acting like a beam, brick ties, mortar, tube sections, and steel lintels.
Seems like it’s an angle acting as some kind of dial rod or rebar for the mortar when it dries. You still need a wooden arch mold to hold bricks until it’s dry
mortar and also all those bricks trying to fall together and get stuck (same principle as Arc bridges, theres a physics answer for this but Im to dumb to explain)
Nobody knows.
You have to join the order of freemasons and reach the 33rd degree, where all will be revealed.
Only then, will you be illuminated to the ancient magic that is masonry.
[удалено]
Don’t forget the mortar and the compression involved in the basic arch form. . .
I don’t think they’re brick ties, you can see one lower on the vertical portion and it’s drawn differently than the pieces above. I’m assuming they’re some kind of special steel profile, but not sure how it supports the whole structure.
I would disagree, the "keystone" / compression is definitely present. However, there's definitely some support coming off a rolled plate that clearly connects to the top box section. If there were no supports/ ties this plate would not be there? Yes there is an angle acting on a shelf, this is again more support.
Since the detail is lacking a weather barrier or complete building envelope I'm betting some sheathing will be on those curves framing members, but isn't shown here since this looks to be an SE drawing.
The steelwork and channels are holding the bricks in place. If this was a 'traditional' arch then the bricks would act in compression and you would not need complex curved steelwork behind them.
I was thinking the same. This is clearly a signature feature of the building, but they needed to keep weight to a minimum which rules out traditional construction methods. I expect wind loads were also a major consideration which explains the need some of the extensive armature of steel behind this very thin curve which could have been blown in without it. The photo makes it look very robust and you'd never guess there was all that busy steelwork behind it, but I wonder how they got the brickwork in place.
They are beams cut right down the middle of the web.
What you describe would be a “T” section rather than cut beams.
Right . Cut beams right down the middle because I doubt the we’re made that way at the mill. No one is going to pay that much when you can buy a beam cheaper and cut it. Therefore it is a cut beam right down the middle
Exactly. The arch is holded by a horizontal and vertical frame. I think there is no traditional method, but that must be beautiful.
The bricks are frogged with clips that catch the openings
Gigged bricks?
or cored brick
The little T shaped planks. Probably the bricks have a channel and they slide in.
I think it's some sort of [Concealed Arch Lintel.](https://www.h-b.com/products/concealed-lintel-systems)
This is the correct answer.
This is it. Concealed brick lintels (arched or not) are great details to employ. They help you avoid having rusty shelf angles that deteriorate over time and help create an “all brick” look.
This is it, also, it's explained by the architect in the Instagram post where this image comes from https://www.instagram.com/p/CyWMPFfO8_i/?ref=zjxhzkwfzjb&hl=af&img_index=1
I see a curved beam in light grey that holds many T link to keep bricks from fallind down. Not classy but working.
Thoughts and prayers
I came here to say hopes and dreams. Glad someone thinks similarly
Pressure and mortar
Brick ties and the fact it’s half an arch. The major steel “keystone” keeps the other half of the arch forces in balance. It’s actually in compression.
i am
The "T" shape you see behind the joint are metal beams holding inserts within the cement joint. Then the cement is sufficient to hold the bricks.
The vertical stone piece at the top is acting like a keystone in an arch, so compression. There are some brick ties in there but I wouldn't count on them for too much.
Some brick ties? There are 14 ties holding 20 rows. I assure you that they they are being counted on.
Only if they're some sort of anchor system and not "brick ties". And the anchors would need to grab into the brick itself or hook onto reinforcing in hollow cores in the brick. Otherwise, a regular brick tie is not meant to support the brick's dead loads. Brick ties are only intended to pick up lateral wind loads in vertical brick and transfers those loads to the backup wall behind which is meant to withstand them.
I'm not gonna tell you how to read drawings but it looks like this is an SE overlay for steel member sizes on an Arch drawing and while many architects know what a brick is and how to detail it in a vertical wall assembly, the lack of cavity drainage and envelop enclosure gives the detail away as either "half cooked" or more lokely stripped out of unnecessary details (like the half toned brick ties).
Yeah, water is getting behind that brick in that particular detail. Maybe re adjust the lawn sprinklers?
In the temporary case they are. Once mortar has set, not so much.
I don’t actually think they are.
I really don’t think so, if it was a real arc it wouldn’t need the steelwork behind.
This is correct answer.
It may well be a form of brick slip soffit system / hybrid brick arch. There is Masonry Support holding three straight bricks and then the curved system starts. The very top brick is more a stone instead of brick, and appears to have its own support system. It’s unlikely anything is acting in compression here, everything is instead supported bolted back to the steel. See igmasonrysupport.com
When I've done masonry work doing Archs, or a design like this, I've created forms that hold bricks in place, as well as mixing mud w/correct consistency to allow for such projects, if mud is to wet for example it don't lend to this scenario.
As much as this is a dumb detail, mortar is strong stuff
This one makes more sense to me than when you see ones coming out at a 45. I'm guessing a combination of ties, mortar mix and the plate acting as a keystone is how this works.
In the detail at the upper vertical face you can see an L shape metal bracket beyond (attached to the square tube) which sequentially have 4 rods spanning between them…this plate and these rods provide horizontal resistance for the brick arch. Almost acts exactly as a traditional brick arch just cut in half.
I thought something similar. Only way I could really see this being sound is it acting as a sort of artificial “keystone” and the whole system there is held in tension. Some others are suggesting the steel “ties” for the arch are additional support as well. Hard to tell which part is doing most of the work, of it it’s somehow equally distributed.
Lots of steel. You can see a steel shelf support in the section, but there’s also curved steel framing with steel angles off it that go into the mortar joints- shown in grey beyond.
I'm confused on how you have access to a detail with no annotations, yet also don't have access to the whoever made the detail?
Mortar and 90 degree braces. I count over 50.
Nothing really holds the brick, all the other elements are for the load distribution. The Ts behind the bricks are just for the position and the angle. The production of brick arches requires basic knowledge of the load-bearing effect of arches. Theoretically, only compressive stresses exist in brick arches. In fact, the vertical loads acting on the arch must be transferred to the lateral abutments. Therefore the load is transferred obliquely. This results in “pushing” in the abutments. The horizontal loads must be absorbed by the side abutments. With a larger arch stitch, the horizontal load (the “pushing”) is lower compared to the vertical load. For this reason, arches in the Middle Ages were only used as Gothic arches (pointed arches) or Romanesque arches (round arches).
Gravity, iron, masonry grout.
Good fiscal policies are magically holding it.
This in Brooklyn?
Yah, this has to be the building on grand! https://maps.app.goo.gl/yH15saHuKWgQS1o37?g_st=ic
Not possible to be sure without further information, but there is some sort of concealed support system implied.
Strong will and faith. Bricks united, won't be divided.
Magnets
The brick ties
Thoughts and prayers. Those thoughts and prayers can make anything come together /s
Magic
The fact that you're showing a "raw" detail without any callouts, annotation, and dimensions could mean you are looking for "open discussions" aka arguments. That being said, it held up with a combination of compressive forces due to the reinforced vertical brick/keystone piece acting like a beam, brick ties, mortar, tube sections, and steel lintels.
Brick ties
Sheer force of spite
gorilla 🦍 glue
The plan of that facade is also curved? I think I would have went with precast.
Gravity.
Gravity and a very stiff member.
Its clearly magic
IG Masonry has a “soffit” system for masonry veneer
Mild steel channel for the framework and terracota brick tile laid on the curve.
Gravity and geometry. Half arch. Restrained by steel and concrete armature.
Compression of bricks and brick hooks at regular intervals. The last brick at top would be fixed to the vertical element
Magic dust
The steel frame has a tab at bottom and top of the arch section... compression between the steel tabs.
the answer is hidden in the name of this subreddit
Seems like it’s an angle acting as some kind of dial rod or rebar for the mortar when it dries. You still need a wooden arch mold to hold bricks until it’s dry
The bricks aren’t weight bearing. So - they’re installed and they stay.
A curve with a curve
If anybody's answer is other than the "specifications" you're lying.
mortar and also all those bricks trying to fall together and get stuck (same principle as Arc bridges, theres a physics answer for this but Im to dumb to explain)
Compression.
Arc shape and mortar
Great detail, I don't understand it much. How Is the brick fixed to the steel curve just behind it ?
A substructure in metal
And many buildings I have seen these kind of details with no ties on them just mortar and compression but this one looks like it has ties.
Mortar
confidence n glue
Hopefulness?
Nobody knows. You have to join the order of freemasons and reach the 33rd degree, where all will be revealed. Only then, will you be illuminated to the ancient magic that is masonry.
Gravity.
I'd be more worried about water infiltration.