come over here and tell us a little bit about safety on this structure, the safety program, and about how the crane fits in. >> it is probably one of the most dangerous pieces of equipment and it is the most rigorously protected. we had cal osha out here doing test weeks. >> cal-osha comes out because the state of california, unlike the city of new york or other places, in the state of california, cranes are inspected by the state, not the local jurisdiction. in the wake of the crane collapse in california in 1990, the board of supervisors passed legislation which is now still in it regulations in the building code that requires crane safety programs to make sure that the building department is collecting all the information, but we reply. we rely on kali should do the actual infection. what did they do for an inspection? >> they bring about 20,000

pounds of test weights and check all the weight limits and wells and electronics and connections and the limits. they do everything. >> is there somebody up there right now? >> there is thomas in the cab. >> can you get him on the radio and have him we've to us. -- and have him wave to us. there is a job. >> there is no bathroom. we will not discuss that. >> the safety rules say there have to be some provision. >> there is a provision. >> don't stand under. >> we have a couple of different kinds of cranes around the city. we have a fixed height crane, like this, and then we have some that are climbing cranes. >> this is a free standing crane, not bolted down.

about all of these big concrete waits? >> 160 pounds of concrete is the ballast week. >> did you have to pour a big foundation under that? >> this is a construction method that we get to, we work with the contractor. we get a load from the crane manufacturer, figure out the downward load and the overturn load. we then make sure that the foundation can take that load. also, all the anchors on the floor are adequate. >> why would you do this instead of fastening it to a fixed base? >> this crane is not part of the foundation system, so it is out board of the structure. basically, it is something that worked well with the courtyard and a landscaping and the irrigation outside. in one month, the crane that is going up will be part of the foundation. >> bolted to it? >> exactly.

>> the other kind of crane, which worked their way up as the building that's taller and lift themselves up and slide and. >> those are climbers. >> the climbing crane. it was a climbing crane that collapsed in 1990. >> we do not like climbing cranes. >> they are safe if they are done correctly. no margin. not much margin. >> how you get one of those set up if it is not a climbing grain and there is a fixed piece underneath? how does that it set up? >> the crane is brought in it in sections. as the foundation is poured in, the, up with a mobile crane unit, put out the section, then they build the jib on the ground. >> what list it up? >> 225-ton portable crane. >> they bring out another crane

to set up the cream? >> exactly. >> this particular crane is brand new and it automatically shuts down at 35 mob. hour wind. -- at 35 miles per hour wind. >> i got a call a while back from some neighbors who said the crane was spinning around, free- spending, and i am worried. when they shot down, they're not fixed into position. they are allowed to rotate freely with the wind. weathervaning. when their shutdown, they'd still move because it reduces the load on the crane. >> i am wondering to what degree the guy at the top is typical there? and the weight will have a strain the further out. the u carry weight that you would not be able to take to the end of the boom? how you keep from it

malfunctioning and going to the end of the boom? >> basically it has a 145-foot jib on it. as you go out, the capacity goes down. this crane is good for about 17,005 propounds at 50 feet. there are warning systems on the crane. if he actually tries to override the system it will shut down. the only thing he will be allowed to do is drop a load. >> as the ground moves, if you exceed the 3 inches that you have designed for the building to settle down, what would happen? how would that movement transmit through the floor? >> most of the settlement takes place right after construction. the settlement that there were mentioning his total sediment,

due to the mass of the building itself. once we get an earthquake, the foundation is designed such that all of the friction forces against the piles resist any further displacement. there will be some displacement, but it is all calculated into the computer model that we have generated. >> how much settlement would you expect from the initial baseline? >> typically, with piling foundations, 1 inch or less. three-quarters of an inch is what is expected. >> does that impact any of the systems in the building or anything? >> most of the settlement occurs during construction. as you lower the material a continues. what she did most of the building structure up, then you put the finishing on it and you cannot see the cracks because most of the settlement will be gone. >> let's talk about greene

design. a big thing and san francisco, before the board of supervisors, is legislation, if this building were built next year, would require that this have eight lead certified building, silver building if it were built next year. what kind of green provisions are built into the building? >> we have done as much as we can with the checklist with the limitations and budgetary constraints that we have. we're hoping to be certified to achieve just under the lead silver level, although we're not going for the certification because of the process on this particular building. >> can you mention specific green building construction strategies? >> we have worked with our

structural engineer using flash in the concrete. >> what is that and why is a green? >> it is a byproduct of industrial waste, basically, the smoke from the smokestack, ash that is collected. it provides a great material, a great part of the concrete mix. it is recycled and is relatively inexpensive, although it is getting more expensive because there is a lot of demand for it. >> any other green -- >> it affects the curing of the concrete, prolongs it. >> does it affect the ultimate strength? >> it actually improves it. >> as far as the budget, with our contractors, because of the curing time, it is expensive. we could have put more cash in the concrete, but the more they put in, the longer the curing

time and the longer the schedule and the higher the cost. >> any other green features of note in this high-rise? >> there are a number of features, such as using recycled products such as carpet, cabinetry, things like that. we are using what they call no added formaldehyde wood in the cabinets. the building is largely not air- conditioned, which in our climate, it is benign, so it allows that. that is a green point. >> what about water strategies? >> when you talk about lead certification, a lot of the factors taken into account are things we are able to achieve just by virtue of the outstanding location, walking distance to the best transit hub

in the city. we have walking services for just about anything anybody could want. >> we have high efficiency boilers to heat the water. it is a water source domestic heating system. >> what is next to the tower crane? we have a big blue piece. what is that? >> that is a concrete placing boom. that is how i put the concrete up onto the deck. the concrete truck will back into here, go to the hopper. then i have a slight line that runs up the center of the boom. that completes all the dax, walls, and columns with that. >> it must take a lot of power to push that. how much concrete do you typically place? >> on an average day, the

walls, 147 yards. the deck is about 210. >> how much is in a truck delivery? >> 10 yards. >> so you have a bunch of trucks backed up, all day long. where is the concrete coming from? >> we have bodie concrete off of third street. >> there are not that many concrete suppliers left in san fences. they used to be a bunch. is there anybody else beside bodie? >> we like bodie. >> they are bringing concrete in from a distance because there are not many yards anymore. in general, san francisco, part of the planning issues and san francisco are the loss of p.e.r. production and construction related services. we still have some, but now we're seeing more and more of these services outside of the

city and the cost goes up because you have to import goods and workers. when you get your bricks fixed in your car, pretty soon you'll have to go outside of san francisco because it is becoming not a friendly place. i know the planning department is working hard to keep it in its working condition, and i wish them luck. the way that these concrete walls are don is typically there is a prefabricated panel that is set in place. these prefabricated panels? >> plywood and to and studs. at the top, those were poured yesterday. we will take them apart. >> it has formed release material so the concrete is not stick to it. >> correct, it is a special plywood with a finnish sauna that lets it strip easier and then we also spree with oil. >> than a pop these apart and reuse the panel's.

>> we will change the plan would usually one time through the 12 story building is because the plywood starts to get worn. >> howdy keep everything perfectly lined up? -- how do you keep everything perfectly lined up? >> we have control lines and we have crude lines -- and a grid lines with the surveyors. we plumb everything up. >> about how close, what is the tolerance? >> before it is tension, within a 16th of an inch. as the building gets attention, it begins to shrink. -- as the building gets tensioned, it begins to shrink. >> what is the allowable tolerance for the design? can you move things around a quarter inch or so to get things to fit together? >> amkor bridge would be a lot. 1/8 of an inch is typical.

-- a quarter inch would be a lot. one eighth of an inch is typical. obviously, certain areas are more critical than others. there are a lot of the dimensions that come out of scale access requirements that they have to be met. the city has a field inspector who will come out and measure every one of those. we try not to design tight areas in close proximity to concrete walls, but sometimes it is necessary. >> the california building code specifically says you are allowed to use reasonable construction tolerances and we have adopted a regulation and california in the san francisco building code, a copy on the table, the san francisco building code, a couple thousand pages, and it tells us what tolerances are allowable, and it is not a lot. if they say do not exceed, you

may not exceed at all. every floor, it is an elevator building, so every floor and unit has to be accessible from the public spaces, correct? >> what the code requires typically in california is that every unit has to have a clear path of travel to the front door of the unit, as well as through all public areas of the building. within the unit, a certain percentage of those have to be outfitted with grab bars and additional clearance required for floor accessibility. >> that is important for a big building and high rise because you have to lay this out exactly right. the plumbing has to be in exactly the right place, the walls have to be exactly right all the way up or you did not meet the very critical tolerances. it is a real challenge to make sure it is exactly where it belongs. >> we're talking before about post tension slabs, which are a wonderful tool for reducing

concrete in making buildings lighter and less expensive. but you need a precise path through the slab. those openings for plumbing, electrical, etcetera, have to be designed have time. once they are there, you cannot change them a lot. some building owners do not understand that you cannot drill holes through the slab 20 years from now. >> tellez with that is? >> that would be a fire sprinkler pipe. >> we have a bunch of different types. this is fire sprinkler pipe. they hang this from the ceiling somehow, run the fire sprinkler line through here. about all the inserts and all the fittings, there is a lot of pre planning and coordination. you cannot drill into the slab. all the guys are up there nailing inserts from the top on the layout, all the walls laid out. there is a threaded insert ready for this. >> they did not go below and drill a hole. >> no, you see the spray painted

lines? they basically give as a guideline so we know where the tendons are. >> all this is figured out before you pour the slab. then the wall is going out. the walls are, what are the call? what is this made of? >> they are framed with light gauge steel studs, which are typically 25 gauge. on this project, because it is a high-rise, they tend to be heavier due to the acceleration forces on the upper floors. typically one, too, or more layers of drywall over that. >> how much movement can we expect in a building like this, either with wind load or seismic load? high-rise buildings are usually built by either wind or seismic. in this case, it is not that paul.

it -- is not that tall. the most buildings in san francisco bay area are not covered by wind, except maybe in the central valley. maybe wood frame buildings with large surface areas. seismic, or earthquake is what is governing this design. th. the lateral system is the bearing wall, fairly stiff. i cannot recall the actual displacements, but they are not much more than a couple of inches. >> how do we finished these? give us a clue how you finish this thing. >> most of the exterior sa are what is called glass fiber reinforced concrete. it looks somewhat similar to the precast concrete panels. both are exterior skin panels

fabricated of sight and brought to the site and assemble at the side of the building. it is three-quarters of an inch thick. mostly to steal, and it has to be engineered as a separate item functioning together, installed on to the face of the building. windows, doors, etc. go into openings, they get slashed and sealed with a joint sealant. typically we try and maintain 3 1/4 inch gaps between any kind of door or window, and a penetration to the outside. >> one issue with all buildings

is water perpetration. probably the no. 1 problem is water leakage. how do we prevent that here? we have calking, flashing. >> obviously the flashing goes in first. we use a couple of different kinds, and a lot is typical galvanized sheet metal. in some more specialized or demanding locations, we have a number of different rise to flashing materials, some more stressed than others. we also use some materials that have a thin coating, a type that comes from clay and has the ability when it gets wet, it expands a little bit. >> people are always selling waterproofing materials, but one type works really really well with no holes. the other thing that works is when people use this field does

not leak. but as soon as you require whether proofing or caulking, it does not shrink, it all fails. one of the first things to go is almost always the weather proofing detail. unless it's says expanding, it tracks -- it does not shrink. at the very end of this, we have to put a roof appear. what is it made of? >> it is a conventional roof with layers of asphalt impregnated belts and a coating. it is a traditional roof.

we want tail construction to provide us at such terrific access, and this is a terrific opportunity. we also want to thank -- thank the architects and engineers and all the soil contractors. thank you very much.

>> welcome to culture wire. we will look at the latest and greatest public art project. recently, the airport unveiled the new state of the art terminal. let's take a look. the new terminal service and american airlines and virgin america was designed by a world- renowned architecture's firm. originally built in 1954, the building underwent massive renovation to become the first registered terminal and one of the must modern and sustainable terminals and the united states. the public art program continues its 30-year legacy of integrating art into the airport environment with the addition of

five new commissions that are as bold and dynamic as the new building. >> this project was completed in record time, and we were able to integrate the artist's early enough in the process that they could work with the architect said that the work that is completed is the work that really helps complement and instill the space as opposed to being tucked away in a corner. >> be experience begins with the glass facades that was designed with over 120 laminated glass panels. it captures the experience of being under or over clouds when flying in a plane. depending on the distance or point of view, it can appear clear for more abstract and atmospheric. the subtle colors change gradually depending on the light

and the time of day. >> i wanted to create an art work that looks over time as well as working on in the first glance. the first time you come here, you may not see a. but you may be able to see one side over the other. it features a couple of suspended sculptures. each was created out of a series of flat plains run parallel to each other and constructed of steel tubing. >> it is made up of these strata. as the light starts to shift, there is a real sense that there is a dynamism. >> it gives the illusion that this cultures might be fragments of a larger, mysterious mass. >> the environmental artwork

livens it with color, light, and the movement. three large woven soldiers are suspended. these are activated by custom air flow program. >> i channeled air flow into each of these forms that makes it move ever so slightly. and it is beating like a heart. if-0 when as of the forces of nature moving around us every second. >> shadow patterns reflect the shapes of the hanging sculptures. the new terminal also features a children's play areas. both of the market the exploratory n.y. --

exploratorium. the offer travelers of all ages a playful oasis. using high quality plywood, they created henches shaped like a bird wings that double as musical instruments. serving as a backdrop is a mural featuring images of local birds and san francisco's famous skyline. >> in the line between that is so natural, you can see birds and be in complete wilderness. i really like that about this. you could maybe get a little snapshot of what they are expecting. >> it is an interactive, keck sculpture that is interacted with by the visitor.

>> they are a lot about and they fall down the belt. it moves the belt up, and if you turn that faster, the butterflies fall in the move of words. >> the art reflect the commission's commitment to acquiring the best work from the bay area and beyond. in addition to the five new commissions, 20 artworks that were already in the airport collection were reinstalled. some of which were historically cited in the terminal. it includes major sculptures by the international artists. as a collection, these art works tell the story of the vibrant arts scene in the early 1960's through the mid-1980s's. the illustrate san francisco's cultural center and a place of

innovation that is recognized and the love throughout the world. one of the highlights is a series of three left tapestries. they are on view after being in storage for 20 years. these tapestries representing various gardens. from his years of living in san francisco. hydrangeas, chrysanthemums, and whilst dahlias in rich, deep shades as they make their way to the baggage area. they can access behind-the- scenes information and interviews with the artist through an audio to work. it features archival audio as well as interviews with living artists.