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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 ...

The floor above . Because the slabs on grade is a conventional slap, it is not post tension. One of the things the building designers do is to make the floor as thin as they reasonably can. There are several benefits to that. First of all, it reduces the mass of the building. We have 7. 5 inch slab. Conventional slab would probably be 10. 5 inches, which is about 25 more concrete mass. It also reduces the overall floor to floor height, which helps with the architectural facade and the square footage. One of the things people are always looking at is decreasing the floor to floor height, especi...

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 t...

Be heated and cooled with forced air, that is where you get the dropped ceiling. Also, corridors and public areas. The dwelling units do not have airconditioning . They do not. They have heating but not air conditioning. Do they have outside air . Absolutely, they have windows and they also have a system called zduct, which provides for a share even when the windows are closed. One of the reasons they have the systems, ever since 1974, chapter 12day of the Building Code requires that you have sound transmission isolation between dwelling units so they cannot hear their neighbors, and between t...

Said this was one of about a dozen synagogues in the area . I would say roughly in the Squirrel Hill area, i dont know the exact number today but i would say it is close to that. Okay. Im sure the Pittsburgh Police and the Allegheny County police are on that part of the case. Howard feynman thank you for that. For awful you, welcome i am alex witt live at msnbc headquarters in new york. It is high noon on the east coast. If you are just joining us we want to bring you up to date on the breaking news we are follow. At least eight to ten people are dead in a shooting in a pittsburgh synagogues. ...