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my name is which i wouldn't know i'm a design principle was h. e. d. and
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we're going to talk about the um very innovative double glass facade system for public library
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and then the the study off i'm very deep data analysis of its performance over time
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the location of this um public libraries manhattan beach what's called manhattan and each public library
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it's a small beach community just south of closer in los angeles airport
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in the close kind of collaboration between architects engineers and building scientists the developed this
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uh innovative system which we caught the the thermal blanket system in order to
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a support vision of the slider is being very open and transparent it was completed in twenty fifteen
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ends recently we decided to go back and and analysts
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the performance of um this building so we're going to
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um briefly describe the project and then died dish deep into the data
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so if you can she in this diagram on the side that's located very
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close to the ocean and has fantastic views over it it's also located whoops
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it's also located on pacific block of this community
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so together with city for police station and um
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fire station and i'm open plaza where the farmer's market takes takes
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place it's really the centre of the city life of this community
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and because of that the idea was sort of vision was that
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um it should be completely transparent and open the idea was that
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the civic level basically fuel right literally flow right into the
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library and that's no threshold um that would provide an obstacle
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this is the first roll north stuff you can see an entrance on
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the west side and the nonsense on the north side leading to circulation desk
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um the first for the basically have the children's library and the meeting
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room and in the centre of the spirit leads up to the second floor
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the second floor then we see that the stacks upon stacks i'm
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more the centre of the beginning and then the parameters really lined with
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um areas for people to lounge um to study required or
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two mutants more meetings and all of it being very very transparent
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someone so when someone actually uh looks a a high performance
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ability um and has to be transparent how he though come back
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that sort of um directed dichotomy first well you'd think oh i'll have to
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use concrete all have to use your if they can so they should be
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but they're not transparent so we have to come up with oak across an idea
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which was follow trends but this is it the thermal blanket how do you do this
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well we if we would the code requires that every uh okay but most of
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fresh air so this fresh air going into the building but that also has the exhausted
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because you press choice of building so therefore you've got condition to why don't we
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use eye condition the and push it around the whole building between the two facades
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it's so now you've got a buffalo thermal blanket and this is the concept
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so this is the c. f. t. work which we get to annoy some the second full how they they would move
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both in three done in three directions posing temperature and velocity going up and down the building
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this is the the c. f. d. as the uh a gets heated by
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the sun as it rises so we had to predict where it was going
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well
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um at the ground level the to the public plastic and willie floor right into the building and um
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we also able to keep the second short extremely transparent for views out over to the ocean so
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then or exterior shading devices that we needed a that could impede that that on the phone you
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so you'd be if a diagram of the system in our great but i i
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do you want it is actually on the inside so that you know they are your
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uh rubber golf unit with an ad space in between and
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then the exterior one of two layers of cloth nominated together
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the two section feel really connected with each other than that is
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layer which is um i mean that that last time of four
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eclectic catwalk for maintenance that's about what to smooth about two feet wide
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and so we have the second floor and then on the third floor section
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this is the overall system reading three sides of the library the missing piece here's where the mechanical well sitting
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beautiful beatrice then support this idea of threshold less access to
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the library so you see don't you it's really the the
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you're from was throwing right and so we were able to minimise the detailing here
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appear to be turned off with um grassland between for maintenance
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and you know some of the photos you can see the last layer
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in between it's very open and transparent especially with a lot the corner
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and the supported demonstrates the low threshold um entrance into the
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library you have few more um total susi the last layer
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um and the the width in between truth about sixty centimetre
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a few monday to have a and the four oh i think especially experts is
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ideal the importance of openness and easy access
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to the library without any indian an impediment
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and then the other notion of use from the inside out over to the ocean
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and what country that communities really enjoying um this openness not
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only viewing the ocean but also they own community don't hold us
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and then the ground floor was able to open up in certain areas and really extend
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to let you know maximise the civic life this is will but people come together that happens in las one
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and this forest don't try to be open this post on the ground floor in toronto flowing in and on
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the second floor in terms of use out now we're going to take a look out um the performance over time
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uh_huh so uh i'm gonna wages you the post occupancy a study uh we different hand each other library
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so first we want to look at the aim of the facade which is you want to create a thermal blanket
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like and isolate outside temperature conditions and establish a constant
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internal temperature across both occupied flowers within a set temperature range
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and at the beginning at the onset of this project we had a hypothesis we see we thought that space temperature readings
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should reflect the conflict internal temperature uh with minimal variation within
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our preset range now will be correct or we roar we'll see
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now we got a temperature sensors we need to select a census from each set aside to best represent
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internal conditions that the sense as i need to be
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selected from both floors and areas that have hierarchy puzzles
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so about regarding the parameters study well data was collected during twenty seventeen uh we would have collected data maurice
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example twenty eighty out of the data was incomplete uh we would have a node data from certain
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months of the year and twenty seventeen was really the only here we had a full data set
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um okay meetings for example every fifteen minutes uh and sensors were uh we said twice a year
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and this was discovered because we discover there was some um
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exception events uh at march tenth h. ave and and december ninety
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so we contacted the uh the the uh building a personnel and we discover that the
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chapters were actually the set and you'll see that from the grass uh the following slides
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now we needed to establish the performance of this facade uh and
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we needed some extra kind the temperature data to verify or performance
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no we did not we could not get a building site temperature uh data
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uh for the external climate uh on site so we had to turn to the government for this
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is a data from the national oceanic and atmospheric administration anyway i
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yeah these meetings were sampled at the other workstation and their
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sample every hour however those meetings were actually sampled landon thing
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within that our so we have randomised lived for that and this out as well you're controlling factor to our climate analysis
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or go up so what you see is the uh grounds or as the ground for plan and you
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can see the different sensors that detect representing all different sides to decide on and again up is north
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so on the ground for uh we see some very interesting temperature
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variation ranging from almost seventy degrees uh down to about sixty seven
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uh and we can see in the summer months we get extinguish okay and this demonstrates a that
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the exception threshold for the summer gets hit by the rapidly because again it's quite hot in this area
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seven we noticed that it gets hey at its uh as as a kid
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at this point in the template then h. v. c. system their condition hits
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then a tad adapted decreases then goes up again decreasing goes up so
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this is distracted i mostly to someone once and we see them getting here
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at the meeting actually increases which is expected because attempt to increases in
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spring is you get the transition that summer and we see the opposite effect
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for once as the temperature meeting intended to decrease again we have these two seven
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points i march and the sender but again using the temperature sensors in the set
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so that must be compare all these different senses we see that most of these
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transactions lineup no in the interest of time i can't go into each pattern in each
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you can show off but we can see that the summer variation disbanding is it
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present across every sensor and we see that means increased cost
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bring and others can this is present on every every sensor
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so let's take a look at the climate data is the other expanded their ass or source again for twenty seventeen
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ah and it's again we see some large variations you well
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how does this compare to our uh ground for a performance
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interesting sell what we see is that the key to the chocolate save the someone's actually product for the nicely and
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we see that for instance sometimes digits here uh correlate very well yet so climate however the minima and maxima for
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the internal ground temperature readings are dampened because the buildings
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compensating for that um so we do see a that the
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that the uh the two performances and there are but we don't see quite stable performance as we'd hoped for for so
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so let's take a look at the upper grapple for data on yeah before we can we have about this represents up north
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and we have census image that style and and looking at the apple for we notice that the temperature readings actually quite dampening
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the meeting wages and it's even send us fahrenheit uh again we have this
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exception event occur but again to purchase a fairly stable so then we compare
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before we compared to um uh to the extent climate let's take a look at the different uh sensors building we see that they're
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fairly similar and that it tends to stay within it presented that to range here that's a two degree temperature range that's pretty good performance
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so what you compare received almost flat line and this is incredible we have incredible for
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stuff for it on the upper floor but then you're thinking well what about the grand for
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well there's an can take what's the first or performance have variations which to correlate the
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outside temperature uh kind of data second for chapter meetings i demonstrate a more stable temperature
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missus concede that the second for a temperature readings are consistent facade performance
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so this is the main question why is that discrepancy between what force
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so no one would expect that the performance of the above will be follow
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of which show much more fluctuation because the sun hits holland
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and therefore the ignition you wrap up and down quite considerably
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oh would see one would expect it to the design of the ground floor
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would be very scary because the angle the someone is of a lesser degree
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but we found completely the opposite and the reason was on
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the first full you have the tools you have interruptions to
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the first saw the double facade what happens is the airflow
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goes up goes was rough clean area and comes down again
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on the second floor you've got that continues to history of k. going to all the
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way round and that's why you got stability on the apostle and no the first full
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so this this data um study would have really benefited
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greatly from a a much which shows set of data
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struck much more um had turned out of it to see how the building of phones
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so one take away for us from the study is that in the future or building shops
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provide us was more data sets all through more sensors and metering and so on we will try
00:13:19
to give a lot richer set of data without a impeding the user's privacy thank you very much

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