I had the pleasure of meeting then Amine of our US of at the University of Minnesota. He was my professor for my buildings methods class during my undergrad studies. He was a great assistant professor of architecture and I'm not just saying that because I got an A in his class his expertise is in building technology and is a researcher fellow at the center for world heritage cities. He graduated with a merit award from antonymous National University of Mexico. And also holds a degree in conservation and restoration of the built heritage from the excellence program of Carolina Foundation and the University of. Day in nearest Spain. Ben Amine is now registered architect in Mexico where he has been recognized for his research and restoration work on sixteenth and seventeenth colonial and indigenous buildings in the haka Mexico his work in Masonry and geometry and Syria Tama tree has been published numerous times he has lectured in academic institutions in Mexico Spain and us. Please welcome Benami a barrister via you think you really think you very much for this very kind. Actually that's how they called me in the universe to Minnesota. Ben how mean. Because my name is Benjamin but in Spanish is pronounced been her mean. So it's quite familiar to me through to her that. They need to hear about my name that way so I really appreciate the opportunity to present my work here. The cultural park that you're at the Georgia pick is quite sure they are excited about it all you want to thank all of you for being here and taking a little bit of your police and. This lecture. I also want to think Professor. Down there right or for their invitation it's quite an opportunity for me as I mentioned before. So I'm going to explain briefly but in the next forty five minutes or an hour a word that I have been developing is a research work and this focused on a story out of me is that we focus on the geometry is focused on these three things sent three buildings in Mexico aim. They have their work that I have been developing is to find these intricacies in the construction of these buildings. I feel this is a natural source of inspiration for a younger professionals who are really driven by their take in the technology the new technology the digital work and how we can combine the big question is how we can combine a history and digital technology how can we use contemporary tools in order to understand our past and have a clear understanding of our present and hopefully our future. So please a research project has been done mostly thanks to the A University of Minnesota. I have had collaborators in Mexico as well and I have had some funding from the university grant in aid of research our history and its color to program. A matching form for the Arts the humanities and design and they were obviously they call it of the scientists School of Architecture. The content of this lecture is pretty much what I want to do first is to give you an introduction to the buildings to show you there for you. So know me their context their relevance in the air. In the in the in the historic A environment in in Mexico and I believe the entire Americas then I want to show you this how I tried to combine sixteenth century treatises manuscripts and combine them with cutting edge technology for building construction analyses and I want to show you some of my results and conclusions I was commenting with Tristen that I still have work to do but so far I have gotten some interesting results I believe that will be. The illustrative of these type of buildings. The question here is why these buildings in Mexico. Right. Why makes it go. I well first of all because these buildings haven't been really a study. Right. I mean there has been a lot of studies in the context of sixteen got it later. Gothic architecture be in Europe but these buildings in Mexico haven't been really addressed. On the other hand something that I find fascinating is that these buildings and I want you to keep in mind as we move through the lecture to keep in mind that these building were actually built by indigenous Native Americans of the region this region is called staker one is located in the state of one Hark at the state of Ohio as this hour in part in the territory of Mexico. And this area where the triangle the sand and some. In some other areas around that. Let me grab my pointer. It's a it's called Steak and it's an interesting area because say it was highly populated during the sixteenth century the Spanish are ripe with this location. And they develop into a monumental buildings monumental Manas. There is something that we have to keep in mind and take into account is something I also that I always remind to my Spanish colleagues when I talk to them if there are actually these buildings were built from scratch. Generally speaking in the in the European context those buildings are actually a this type of wheels are actually embedded in the organ fabric. But in this case they actually were built in the middle of nowhere. Usually they the town the post classic settlements of the pre-Columbian towns where up in the hills and when this planet arrive they decided to bring all the population down to the valleys and change the transform the production systems. So the first one is about the star is that is the Spanish name is the indigenous name. And that's how all the these towns around this area are our name and aim. If a moment a monumental monastery with its church its proper a monastery as you can see on the plan right. A large church at a smaller building called the open chapel. They opened chapel was a building that would serve mostly for temporary. Was a temporary building that served mostly a a to host large communities of people and celebrate their new Christian ceremony. So this is a typical more nasty complex in sample from following the principles and the the same type of a continuation that you can find in Europe as well. These buildings were is important to remember also that actually were built between fifteen thirty five and fifteen A.D. fifteen seventy five. So as parties arrive to two that may. Territory forty nine five three did the Dominicans who were in charge of these of this world promoting this type of monastery got there by fifteen thirty five. It was a knife suitable type of excuse scheme architectonic a scheme that they will use for a these type of of buildings the next one is Santo Domingo jam with woodland this is a current photograph where I was is this is the state of the of the of the of the Church of the monastery the Corinth the if you go to visit it tomorrow. That's how you are going to find it which pretty much shows that what you see there. Now this is pretty close to what it was during the sixteenth century where the community the developed there was a huge a pyramid by the end of the sixteenth century that pretty much finished with them higher population of the Mixteca you benefit very few people survive and never picked up again and that's how you find an hour but they're building is of monumental scale as well. We see again the same configuration of a single Naved church and a monastery. So my vision is to the original monastery in the lower part and naturally I'm something that is consistent in all the sixteenth century a system centering one has to consent of of Mexico. This is the area where most of the indigenous people will gather before they will enter to the church or accept to have to be brought into the church for a religious ceremony. This is the same the church right we see again rape both storming the roof the ceiling and this is the plan again is a single naif bill. With With this configuration of balls in a square plan. And the last building that I a morning show you here was part of the story Sampiero and the post call it in this case is there not in chapel an open chapel that was built with them and money mentality with the scale with the quality of construction that you can find also in the large churches as are X. as I explained before they open chapel will be. Generally temporary structure but in this case there was the monumental structure of the AME the configuration of this is space is is similar but is that the same time is different. Right. We have a centralized space right with our vault on the center and the people the original people will gather over here in the normal room to to celebrate the indigenous and we will have to remember the Christian ceremony. We have to remember that Indigenous people were used to have their ceremonies on the open sky the the pre-Columbian settlement show that their religious ceremonies happened there. Their cause more vision the way they understand their religion was connecting with the sun the moon the stars etc. So there was a transition in the sixteenth century and they opened chapel became a popular model and actually there were a lot of experimentations happening in this in this in this type of buildings the churches and the monasteries were there was some sort of code brought from Spain right trying to control them. Be sure of this pioneers who arrived to do a news painter arrived to Mexico. But the open chapel wasn't really part of that core they didn't even know that that existed so there were several architectural experimentations and beef is the most monumental and the largest and the and the most complex a open chapel that you can find in the Mexican territory and is unique because it also hosts example null vote but it hasn't been found in any other places a grip world has seen before in other places around the globe in specially in Europe. So these are the summary the three different a monastery. When I stick it in samples and these are the three buildings in which I am focusing on and I'm pretty much focusing on the world. Right which is which are they. And they architectural feature of these say of these buildings which by the time were the cutting edge technology right. So I always tell my students that if you see they opened chapel right in the context of the sixteenth century it was designed by Rem Koolhaas right who was using the the cutting edge type of technology of the time and I'm going to show you why. And I'm going to show you what also how how that have happened. But it's choir is what interest. So all of these say type of buildings are they from Italy rooted in the in the Catholic tradition the lead gothic that is called in lead Catholic in in mostly in the Iberian Peninsula is rooted in this type of faith tradition these are the documents of Lars of one accord thirteenth century ride a. Drawings by a actually show how to build and how to construct an arch for instance over here. A There was a measuring device. So you can measure how tall the tower is without going all the way to the top of the tower and the Troy a rope or something that just a forty five degree strangle our very simple a principle right. Our falls arch over here right. You can remove this central piece central fake column analysts and you have an arch without a column trying to trick the people who seeing the structure. Different types this is thirteen center is one of the oldest if not the oldest legacy of a Mason reconstruction is special in the context of cathedrals balls arches itself. Don't fit in one thousand nine hundred sixty one be a little go ape in Congress. John. And I would have also Robert eighteen hundred but who have developed these the theories about how the construction of the vault evolved from the Romantic period to the Gothic the and how actually became the system that they used for there was one of the main reasons. According to feature in Dr is that. Well we have the barrel balled the common bar of all that we know the romantic variable that needed bury the walls. Right. It was very little room for openings. Then in order to to make the structure lighter This is transparent the largest on the on the wall that will make the main a structural work and therefore and then the space in between with a large type of membrane and then developing in this growing wall there will be more versatile more flexible for different type of spaces but there was a constructive way. Each issue when you start working with these growing balls right week. Have to pretty much if the your meter is two cylinders intersecting each other and generally the generally speaking those cylinders don't have the same radios right don't have the same development. So there was a different difference in the within the pieces right on the corner and making a corner piece will be quite difficult. So fitting proposes that actually that is fixed and that is solved with the rape the rape is to cover this this portion of the wall that was not strong and of will bring give give form to the to the to the wall itself the geometry the world will serve some sort of some sort of form work right for the for the masonry construction and then be a little bit. Also the will of this is this a all the same methods of analyzing this type of. Is quite interesting to remark here that they what fiction is proposing and ambulate the group belittling look as well is that they every this arch is a semicircle right that I am on a larger we will study with more detail later and what we what they used to do is to use the same Also are the same pieces. For all their arches right. And that's how these are they pointed arches Also while their use is this arch rotate the arch to the to the plain where these arch is right and A And that's and that's how these point of arch will will exist. With that that is the main reason to do this just to have a fabrication process that will be much more a a much simpler than a carving the stone for each one of the arches because each arch is different so by carrying all the pieces with the same radios right. You have a lot of people carrying one single type of piece and use it in this thing to believe for all the arches within the vault. And what is also interesting here is how Robert Willis. And I will show you some other examples for instance from a law now that we are now Albert a daughter right there. The role of the over the line work in the conception of a of the vaults how the thought of presentation or of different types of balls implant obviously all of those are in speculations right that none of the perhaps some of these school be billed. But what is what is showing here is that the line drawing was a relevant or was a vehicle to transform a type of a configurations into a special type of structures that A can be achieved through arches and compressive compressive members they work of course the caliper last years here that actually track they were ISIS the different type of churches and they JNA ology tries to create a genealogy of the development of the Gothic and A what happens in the late gothic in Spain right with these bury a exuberant type of a designs that actually take place in Spain during a fifteen sixteen even seventeen center E. and somehow they are actually brought to a two to Mexico and these are some examples within the territory of a Spain they have a law that is when the laws are used to live in Spain right and we will see how these same configuration of the world is very similar to what we have in John with land in Mexico. The analogy is used to show you how exuberant these forms became right. Just from a simple arch ride will go from corner to corner and support structure to this type of. A of A A of A where created by this by the by the rapes. So there must be a master the technique a incredibly and they create these beautiful spaces and for instance they were ghost Cathedral which has all these transparencies right. So where where well this a come from. Well. Well there are a few manuscripts and we start here with the proper analysis right understanding the manuscript of the sixteenth century and a and see how they translate in different ways a so there was a strong tradition of masonry construction we can use our use show you they say this is a different world. Right. So within that strong that tradition this large tradition tradition of masonry construction. Some of the Master Builders decided to A to record all their knowledge in manuscripts in treatises and they show a different ways to a to understand and to conceive both in systems and our other problems of construction with masonry. But we are going to focus on the ball things just to have a reminder right what are the components of a bolt of our report we are going to have their eye on a ride. Going from corner to corner the tears are on. That is going to be a secondary that is going to divide this area into three. We will see sometimes the rich rave that is going to go from former arch which are embedded on the walls or transversal arch that are actually span. To the axis of the NE right where I want to have it does the charge which is this a piece or sequence of pieces where all the rapes converge and obviously the Keystone and the secondary keystones are also called bosses probably will. He'll be on time your own shows how with the hand you can actually a proportion of the same the these say these rapes are a little killed and they have a sixteenth century master builder and so with this. Finger you do the former arch rivals and have to be that thick because he's embedded in the wall right. Then you have a little thicker arch which are going to be at the ears or arms then you have it. I want the largest a little bit thicker if possible. Again the next one the RAM the rich rip it will run panther in Spanish and transverse a large is called to appear in this planet which needs to be a little bit stronger like the thumb right because is growing across the span of the church it's. Let's see. Well we don't see very well but I want to ask you to. To get a little bit of imagination here. What we have here is a sixteenth century document by Aaron and Reese between fifteen fifty eight fifteen sixteen dated between fifty sixty even and he shows Square right over here and he shows they are a line going through one of the ribs for showing there is these circles that you see over here are the keystone the different keystones or BOCES right a little semicircle over here to show the the charge right and what he's showing is that they line drawings of those large drawings that we saw from the Da Vinci and. Dürer right that this a Mason is just a line drawing that actually gives the configuration of the bald implant right. And then what he does is a bare tickle projection of each one of those arches is not are an elevation per se the way we understand the liberation of many human there's another you got him sketch up and say cut here or right and you see everything in projection what he goes is that he takes each one of the arches right and rotates the art to the plane where he's going to draw them right. So they can see them in his true form and image. So it takes one arch rotated to this play and then one other arch rotated to this plane and through the arch and all the same thing for these. So what he's showing here is your single line drawings a defining the geometry of the arches in this case a way they retrieve that you can't really see here but it's a line going in this region and going this reaction is these lines over here right. And that's going to be quite important to define They A the height of these Keystone and therefore the radios and the shape of these are in which the air around is going to be embedded what we see that these drawings are not precisely construction drawings. But they are and they are useful to understand the geometry of the world because one is a little bit better if you say alone so the bundle data will say father was a master builder as well and he decides to actually say a pig the process that he lives is if this is the right process to do to conceive our world. So what we see here again is a projection implant a horizontal bridge from pilot to the horizon. We see a virus in this case we see is there is it realize the axis of the ribs and then are at the thickness of the rib then we don't see BOCES right we see those simple intersection between those pieces we start to see a more to more refined type of technology relying in the in the in the in the master pool a hoop illustration of the technology right we can see one of these pieces here taking out from the plan and again we see in the middle arches drawn in this projection and again he's doing exactly the same thing. Each one of the they are Jesus is just taking it to this plane and then followed it back to the who is to this plane a projection and then he defines each one of them individually over here where we start to see here or you can really not as but what happens here is that we see that the the ribs section right which in the gut. It was really always the same section for all of them we mention that in this case the section it starts to get distorted right. But it starts to get distorted to absorb to be part of the geometry of the curvature of this wall. Which also speaks about how a day. Really a master of the technology at that period of time and they are understanding of the implications of this. Of these geometries in in the in the space which is quite interesting. So the construction drawing but it helps to understand how this is actually done. Now how can we use the digital tools in communication with this type of a type of a lot of drawings that. You're still so the very first thing here that show you is a bad idea. It is what is called a scanner a laser scan laser scanner a technology which helps to a top pain what is called a point cloud and some of you might be familiar with this technology. So this is pretty much digital model that A is made out of is a surface made out of points writes a point which allows to register with some detail but with a good level of detail they space the pieces within a D. in this case these churches right. So it's going to provide a lot of information with some level of precision that is going to allow us to analyze and on the wrist and what. What's the down the line geometry what is its constructive solutions etc etc So the first part of the work was you saw the point cloud is very nice period going through them and the church their very first thing is to isolate one of the vaults right. We focused on one of the walls and then say OK this is the one that I'm on and allies is very similar to the other walls I'm going to focus on those so obviously the political will is one single ball right on a four giant woodland and picked only one. So once a day. The point is isolated from the rest of the of the world about the of the church in the within the point cloud then is translated into the Ryman environment and this is called Point two for Rhino which is quite useful to do the analysis of this type of of buildings. So this is the Bury first day the very first part bring it to Rhino and start working with the holes in themselves right uses. Reminder we know that everything was done in the horizontal and vertical direction so the idea is to follow the same process and understand what actually happened within the construction of the boat so we start with called our work. So we can have a point cloud image over here is looks like a photograph but it's actually the point and we start to understand how they actually define the a geometry of the underlying geometry implant for each one of the arches remember that happening by the leader. So in this case is quite simple. Right. We have galleys became the I want us. Well there isn't much to do they are one and they were from corner to corner. So there is our own are the ribs that are going to define the different difference in the design. So in this case we find the midpoint on the opposite side which draw a line we find a triangle and that's going to define the years around with it happens within with all the ball. And we have this ring in the very very center so that's what we care here. So we have now triangle defined by the balls or the keystone right over here which is happens to be an equilateral triangle within the the this square and we find the points where they intersect that I want the ring inside is stange and to the triangles that we use found here and that how we define the geometry or how they define the geometry of these balls implant very similar to what degree somebody will be a bit in this case with somebody Asians right because the designer hats on the sign intentions as well within the context that he was moving with. So this is the final solution. When we plan. This is a very interesting wall because it has double double their peers around right over here this one and this one is was a common practice when you had a rectangular world right so the distance between the let's imagine that instead of rectangle square these are rectangular All right. What you're going to have is a larger world. Therefore their distance from the keystone to these are right is going to be longer. So this area is going to be quite big. So Fear Factor or get another rig in between. So we covered the space and we are we are we are good with with this case is a squared type of walled square plan with double double the tears. You see tears and I also have plans with our work anyway. So how do we find these right. Ridge No problem straight forward we draw a collateral triangle right sixty degrees and we find for a one on one hand this point and on the other hand we find the line defining the stairs or on the Harvester's there's around in the vault. We do the same operation with a with each one of the sides of the world and a. That's going to define both the position or the for this for these ribs and the position for these rapes. Right. The same triangle and a continuation of the tears around is going to be fine. There's still there's only going to define this inner ring happening within the well this is straight line something that we found at the vault of balls in the areas in the level which means that perhaps this was influenced by those type of faults and then. We find a these say the bolt of it. The post color which I mentioned to you before is our unique type of the president and there is no other one with this exact one a shape and aim and they where is interesting here is that. Well everything is connected to the A geometry of the right. So what we are going to have a game that I want as well. Are going to be going from corner to corner from birth X. to Burdick's right then is when I find that there is a runs over here and we are going to have a series of a warped reverse within the ball which are very and the illusion I very south from South are in Spain very elaborated right and the center of each one of these of these ribs is going to be located at the intersection of these of these say tranquil we have another sequence of triangles happening within this more X. I want to develop here and we have the same solution to find these smaller our word arches over here. Rapes. So that's the logic and we have these other ones which are kind of tricky and they actually develop in a completely different way they are all part of these your matric and the. Much more advanced type of solution which is related to the to the to the to the plane that you can find between the connection of these pieces this is in the space within the geometry of the vault of a within the the metric expression of the ball of this fear in this case right. What we see over here so that this is the the default. So we can see here that there is a clear translation between what happens in the plan and therefore the consequences on the way. In the elevation or the better protection is what the next step will be are corded to when they'll be there and man who is right. So what what we do here in this case is to cut sections through a point cloud. So this is what you get to see on the Rhine environment right through the wood through the say plug in a sequence of point that they are going to define the the geometry of of the of the bolt itself of which one of the arches. SO WHAT A I did here was to cut by art by each one of they are just going through the point. So these are these things the sequence of artist right. Each one of them an order to define what the geometry the on the line geometry in the liberation will be and there are interesting things happening in this ball right in this case. Aim. This is called slow walk. This is going slower what we see here is that this inner ring within the vault. Is completely flat the some follow an arch form so there is not a continuous arch from this point to this point there is an arch from this point to this point flat an arch from this point to this point but that's how the geometry harmonize quite logical because if we wanted to embed this circle with towards within the geometry of Morris physical surface you had to do kind of like a cone conical type of geometry with the rapes or he will be quite complicated right so you just car some sort of ceiling there over here and the top is completely flat. Therefore they sent there of this art right at the center of this art is located right here. We don't see there is a line where you do it right here and then which are all these are and they will reduce our individually. Right. Each one of them is sold individually so following the same logic right. The gears are ons are the same thing right. You have these as a center right up to the two to the line where all the centers are and then you draw segments of your conference and that's going to define the geometry of this arch over here. So that's what is going to happen and what it what it shows in the context of bolting is that these world is actually very gothic right. Remember you mention that they will they will they will carve arches individually. So that's what is happening here and A is not a preconceived form that we will see in the in the next couple of posts. So this is what is happening here and therefore following the exactly same logic right. We see the former arches and transversal arches being a semicircle which is center is found right at the center of the a span a of the arch itself. So this is a work. Now John we plan a lot of more sections because there are a lot more arches right. So we can have but we found here is that actually the vault. A response to the geometry of the sphere. What does that mean. Well what that means is that imagine that this is a sphere implant and this fear is also the fine in elevation or in medical projection here is just a mis feel. And each one of these arches is as a section where tickles lies through this fear. So therefore the center of this art is they made a point right. You have a line that was from this point to this point they made a point is right here right. You have the imposed line over here and then you have the finishing of that there are serious. So there's or so each one of these arches is going to be where the callous lies on the on the pier and we can see here with more detail that is what is actually happening so is very different to what the in in regarding these arches and the same thing happens with it in the lower tiers around right. We have a section on the sphere from this point to this point they made point is where they are the center is going to be and that's where it's going to define this arch. Now what happens with the former and the and the transversal arches. Well what is one has to happen here is that they are going to use what is called a lab well to the larger one which is the same system that we were looking before proposed by right where you have this arch and then rotate the arch to this plane to this plane and therefore you have two centers and appointed arch. So they are used in exactly the same exactly the same arch for those so now we have a hybrid bolt here is kind of is very is under the School of the Renaissance because a preconceived four is a sphere is there you know the importance of the of the sphere in the Renaissance bar is using this the solution right. The solution that we find commonly on the Gothic bolts. They're both cola a lot of more sections where we cover a lot more rips deal with but in essence the Pascola is somehow is quite simple. Do we have the a barrel rapes which are going to be a semicircle right is where we half of us are confident. That's where we see here so that of that forms. Which forms a dome. So the entire geometry of a Each one of the arches is going to respond to that dome is very similar to John Wheeler Santa sphere. So what we see here is that these arches is a section where tickles lies on and it's very cold surface. It's important to remember that all these surface that we are talking about happens only at the Internet or they introduces this line. The at the at the lower age of the art itself right so it's a is a is a is a form and I want to show you some drawings of how that looks like. So these off the very well this is that they think points of circles and art are lines that actually happen within the ball itself they were also ours and there are the formations B two I mean the difference equation in the position between the ribs the they actually the actual surface is is just just is different but the underlying geometry is based on this. So why Well what we see here is is this I realise geometry that I have shown that has been obtain through these different sections to the ball on AIM and how they arrive superimposed or on are imposed to the to the to the point cloud in order to bury fi that that actually happened. So what we see here and then we see the world in the point cloud then we see John we plan we responding to the geometries. We see the Pascola again. Responding to that geometry juncture. So what we have the fine so far is. With the on the line geometry of the vault right now using this method that is proposed by Ben will be there and and Landry's we understand that. Yes is they follow the same precept the same principles. Now the next step is the history ARTEMY. Certainly is the science that is studies the cut of solids right. And there is the ultimate for wood and there is history of them in four four four masonry four stone. And these are joined by a million beautiful drawing by Dr in evidence shows they say drawn by feeling where the Lord in France right. This is a piece of stereo to me that is lost but it shows the intricacies of these say these in these work necessary to create structures of this type. So this is the information obtained from the point plan we can see seriously formations This is our work and that's another type of story that can be done in terms of the conservation and the structural performance and also provides the information to a understand what what the family these buildings we long to according to us is there are three different ways to A A two in two place they've also ours in the course of the world. So I was the first one is the English style is a beautiful drawings by Willis why the fan bald is quite female are right there was so ours are pretty much perpendicular to the bisect race between the two to the two arches. So this is what happens in the post call in Jan woodland is more like the French style they call it right to ceiling there is intersecting each other. Remember we talk about that as there is position the placement of these A or there was a large sum. Talking about the pieces between the ribs and in the case of a of the political allies call there are no that's in Spanish. Right which is pretty much following the dome a dome configuration. So going back to the to the third to me right. We see the section of the of the river of pain from the point cloud then the different sections between the three walls. Remember these joined by a tiny one that actually shows that some of them for instance are jammed with land the Pascola follow the recommendation of rather than your own going with is called a school school of one they're using the same section for all the ribs and increasing the only on transparency so we can't either live German tree. We have the section of the ribs and then we have here the moral of the of the boat itself always trying to verify that it fits within the say suck right between within this say this surface created by the a by the a a point cloud. So the creating all reaps the different connections then you see this a point cloud a portion where many sections similar to the sections that we saw within the walled dried many sections happened to each one of the pieces and perhaps this is when I look a little bit clearer right away see different sections in Jell-O. lined these blue light red lined gray line in order to the find the geometry of the piece itself started to understand this there. For me which is very much. The form of the piece that is where all these grips connect. So then start to see the pieces. We Sizwe in a more three dimensional view in order to understand right. How they are actually carved and perhaps the next step will be to do to actually develop that carving process and. These pieces are twice as they're being of this of this of this piece of furniture is just quite big. And the complexity within this piece is that is also going to talk about different things especially in the context of a of the history of construction. This is one of the of the typical a gothic solutions' see the piece the ceiling. There is within the Keystone bird tickle him in this case. This case. These are these the axis of this piece is leaning towards the center of the arch in which this is is a embedded. So these two different types of solutions. There are quite a different and belong to perhaps different traditions but some. A configurations of how the individual arches. Can be seen from the construction point of view and at the same time in this case for instance that does the charge which is a quite interesting piece in the case it is a beautiful piece of Injun woodland quite complex. Right. Hosting all the all the pieces within the a the the ribs and a I will separately from any more illustrated. Way of understanding how the. I mean as I mention this. I work in progress but it is pretty much showing how these things are but at the end what we got here is right. Our catalogue of pieces that were developed within this three sixteenth century churches in the Mixtec and region of Mexico quite complex piece of a vault. That we're actually as I mentioned built by a they missed me the mix takes the people of the region of of that region of the car by by by their. Going back to the art of graphic creation and start seeing the pieces in a in a different way. Right. And they want a different more traditional way which personally I kind of need to see right because the information that that provides is quite Also interesting and then. Well some sort of conclusions that I'm going to draw here that are not precisely. There are I mean as some sort of conclusions right for instance in the case of a very gothic bald ride each of the arches drawn individually the central reminds of all proposed by bandolier are that we saw originally by the in that a manuscript and also they are similar to the the balls built in the cloister of sanest they went through which are attributed to one they are ballon we talk about how how these pieces these. Reaps follow the keys recommendations right. With the same section for all the rapes in the case of John woodland ride is Morris is a concert of the School of the Level A A uses the double pairs around in a square plan ride on a it was very sort of former arches at the Sinulog well today when Alice I as I mentioned before which is why proposed a breeze in the drawing of fifteen sixty and they are. Any female are to they've all of us into a little more from coming from them that you see our region was very elaborated rips it reminds to the vault drawn by where they were killed and then you're in these vault over here with this war arches that or graves that we see here and we see here which are happening here and here right. So there is clearly a clear influence but they are quite a different light. So they've also of the church is a square plan similar to that was proposed by the manuscripts. Nevertheless it is ordered to keep in mind that the manuscripts are dated after the construction of these boards is a word using Day What is important here again is to contextualize that if you start at moment and understand that these walls were designed using the latest design principles or the latest technology and where a sign of the avenue guard of the of the time and the square was a suitable moral model or a base for single nature which is which are kind as characteristic of Mexico and the only right there is there is a question about the role of the of the rich really right if you if you'd really defines the geometry of the ball in the case of the Mexican balls the Boston riot is not really a important aim they falso proposition by the Spanish police on how you draw you find it. Here's your own grave in the in this punish world by drawing it's a semicircle right from from corner to corner fine in the middle point and drawing a line from this corner to that made point we found that in the Mexican balls is everything happens everything within the constraints of the geometry of the world right there very substantial difference and in the context of a history it has been an assumption that because the proxy. Between these three buildings has been a historic assumption because there are no documents to prove it and people have really tried to find who was at the signing of these masterpieces but there has been an assumption that it was the same one because they are so close to each other. Well this is study shows that they are substantially different and therefore the proposition is that they were actually designed by three different master builders in them just as a reminder of how high tech this is this is the right. We know a conventional concrete beam will be one sixteen of the span will station concrete beam is one twenty second. The average is one two hundred thirty eight. Bill this fascinating is structures by a day and Felix candela are within this range right one hundred seven hundred twenty of a ritual between this band and the. Debate within this plan and then there of the structural member rates this plan is one forty one forty fifth's not a bad lot smaller than the post tension beam ride in John woodland we call it with take a car into account resort where is this discussion about what's the role of the of the of the rapes if they really work is structurally or not they do and they don't. Right. But if we take into account. Only the there was a large we are talking about one hundred one to one hundred a span radio right one sixty it is a membrane just think about it. This is a membrane of stone just working compression smaller piece of stone working compression creating these very very. Very efficient the structures which I will say are quite a remarkable. And in their case of the political left. These are the numbers is the busiest one we have to remember that the protocol is supported by columns only at the contrary to the churches that have these very thick walls. So the definitely the say they say Master Builder hut. Is some some have to make sure that this was strong enough to do to be able to do behavior enough so that it would then move. We have to remember also these these buildings are within a system it's own so. Quite interesting just to see the cult how thin those membranes are how our fish and they are as a structure and what we can pick from from but in order to to understand the way we design our the way we make the structures the way we we we look at the buildings that we try to do to create the in order to be more efficient and much more. But we might provide perspective meaningful. So with this I will just finish and they Orpen it up for questions so you have any Thank you very much for the eloquent. Yeah. Well is aim as I mentioned earlier. The open chapel as a type and the building was in a restricted by the Spanish codes. So. As I mentioned there were there were there were there was room for experimentation. There was room to do different types of things. There was a very clear. Programatic need and there was a very creative master builder behind it and he and I were very he was he did something that I wanted was quite a unique unique. If you look at the configuration of the world itself right at the X. I want. But has some some in the drawings the underlying geometry within within the X. I want you thought there was the start of the ride which can be brought back to the roots of Christianism in utero some perhaps that was also another. I mean I used to think that it was someone who really really understood the construction system really understood the technology. Found. Very skillful labor and say we want to do something very unique but and it is a strong piece of Renaissance architecture because it's can see it with a very centralized form. It is and this fear in this very very center. I mean there are many things there is a very contemporary piece of architecture and so it was an excellent. And excellent design. Besides that I don't I don't I don't find too many theories possible. Yeah. Yeah yeah. Well there are a few large buildings in this region a specific way in this region. So the largest building. Connected to this culture is a complex in a large complex in. In the state of what I called Miller and in Midland you'll find are very refined carving stone carving on the was creating this very intricate patterns and the piece of stone must be like thirty inches by one inch all put together within the wall and it was very very very refined and so well that shows that there was a tradition of carving stone. When you were analyzed the section of those was the sections of midline or in the case of Montel one because of me and build the want of I was in really occupied with I think fifteen Hornets are the end of the fourteen hundred and and you see that technology is very similar. I mean you have a core with more and rubble and then two sides of in the walls right. With with much more will current pieces of stone of Masonry. And the corners will be done properly right. Having a corner peace etc because the senses nikka. So they were elsewhere not precisely something different or now the transfer is the transfer of technology happened on the boards differently and there is no more trouble I mean there is a God this is a common question in what extent the Native American in the mix takes of this region actually change the process etc. There is not much room to do that. I mean is this follows very precise rules. If you don't carve Well one of those pieces the entire arch is going to collapse. So the idea is that you have to have the right form or the right shape of the piece and there is one way of the one with perhaps a mortar production but as I mention probably sixty Barbara Lee fifty years to build this this been in Europe would have taken a hole in the right so there was a larger. Population that embraced the technology and was forced to actually do it. So that's true. So that's probably probably probably the difference here. But in besides that it's very difficult to see if they covered one way because they needed it was it was were brought from Europe the US The US had the skills definitely otherwise it will happen possible. This year are limited by QUESTION So what is the reason why you mean why they made this open chapel there was that what was a quite monumental so. Well I think that you're answering the question definitely there was a strong tradition to have this open space and there was some there was knows there is not a clear reason the document that historically why. In this case the political learn. If people decided to build an open chapel of those dimensions. I mean. There was there was some sort of competition between the populous the the little towns just like happened in Europe right which then had enlarged the tallest. The tallest and the most monumental. Perhaps instigated by the monks by name. There is not clear understanding why they decided to put all their force from the open chapel and make this monumental piece. It was successful in all the settlements in all the little towns there was this little chapel that was very useful at the beginning right when the priest arrived and then they gather all the images that said now this is a new religion etc etc But as their religion was accepted by the communities they started to build their own little chapels and their own little churches and they are usually was either abandoned or their configuration is you have the open chapel and then once they can the community is strong enough they are the church and use the open chapel as an where so you can see all this was successful. We marched across the entire territory. While in the post-colonial I was so monumental and they put all there for them all the money and all the work is not that clear. But it is definitely something that we think right it was very good they did it because we have this very interesting building over this place with this one here. They're here they're there they're they're there they're here they're not with us. It's in their cup and they're exactly. There is a I mean there is record there is record of that in the area of Mary where the Mayans were bundled dearest manuscripts. But I think it stayed there not her. I think that how that happened. The Master Builders brought from from Europe the god there and work with the indigenous people and taught them is what is called foreign German terms where this. This is the practical geometry right to Carver's there's a bridge I'm pretty sure that they had many mistakes but at the end they achieved this type of. Yeah that's a very good point there. At the mall one and order one coming with him and. But that language was and the other at the other issue and we know that there are there are documents off of both of these. I don't know the name in English but this. My mural colored to convert the question is a great thing in SAP what they can reading in Mystic so they call the great support they can if there wasn't a written language of to this point they current develop that written language. So they speak it but they don't. And so in some areas they are trying to do to achieve that. Yes yes or a yes. Yeah. Myself there. Yes there. Yes that's correct. But that's correct. Their abuse of the or the piece is yes exactly. Not exactly that really story out of me or this process of practical. Geometry gave birth to what is now understood as descriptive geometry and the way we understand. So it's a consequence of the construction rather than Is that how it happened but their way around. Exactly. Yes I think there are yeah well it's great but I'm in by lanes here and there as well in the couple and rejoin in the balance of religion you find grasp the meaning of all this I mean by a world of this fourteen fifteen sixteen converts. I mean it's just is what is parallel there are actually some buildings they had reports and they on their need Bill. Because it was more modern or much more to see the board. Together in one one building. It was quite interesting.