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Dec 10, 2012 · Structural. Jul 19, 2006. 22,581. AU. Provide the slope in the slab. A lift shaft is of limited size, so it is simple to accomplish. As to making sure the water has a way to escape, architects are often not accomplished drainage designers. 0. Sep 29, 2015.
Jul 7, 2014 · sprinkler1000 (Mechanical) 7 Jul 14 22:29. Reading the IBC ed 2009 there is a requirement for elevator lobby in high rise that can be sustituted by elevator shaft pressurization. I believe that the air flow rate to pressurize both stair and elevator lobby with the same system would be too high. There is the possibility of many doors open that ...
Jan 24, 2003 · Dec 25, 2004. 96. US. A smoke detector is required in the hoistway, IF there is a sprinkler head in the hoistway. BUT, per the 2007 edition of NFPA 13, you can OMIT the hoistway sprinkler under certain conditions. Paragraph 8.15.5.5 of the 2007 edition of NFPA 13 tells you how to omit the hoistway sprinkler.
Jun 15, 2009 · RE: lift shaft msquared48 (Structural) 15 Jun 09 15:23 What you're lifting, how you're going to lift it - cables or hydraulics, how high you have to lift it, what is available for the suport of the foundation for it.
Oct 9, 2023 · 2) If one were in an elevator cab during and earthquake, it would be nice if one were able to get out of that cab. 3) Elevator cabs should progress to the nearest floor where maintenance folks can, ideally, deem them safe for use. 4) It's tough to fully separate earthquake risk from fire risk.
Jan 30, 2003 · 2. Dig out from the elevator shaft a deeper foundation under these columns and support the columns with a vertical steel support welded to the column running down the side of the shaft and supported 16" below at the bottom of the elevator shaft with a new foundation. 3. Bore out a 6" vertical hole through the thickened slab to the dirt below ...
May 3, 2021 · Can we construct shear wall for lift above orginal foundation as the original footing is more deeper than required lift pit. So the mat footing for shear wall raises above the original building foundation. I plan to attach the shear wall into orginal building column but will have different footing.
Mar 19, 2003 · Get the heaviest bob you can find and suspend it so it and about a foot of its string is submerged in water. A 5 gal (20 L) bucket should do just fine! The friction of the water will hold the bob and its line steady in all but the most windy day. The trick is to take the mean of the largest and smallest measurement.
Jul 12, 2005 · It's possible with ventilation only, but it depends on the temperature of the air available for ventilation (typically from the elevator shaft). Short-form equation is: q = 1.07 x cfm x (Ti - To) where: q = heat load in BTH/hr (1,400 watts ~= 4800 BTU/hr) cfm is the cubic feet of air at temperature To that you need.
Apr 11, 2012 · I have a project combining two 5-story brownstones, knocking out the middle party wall, re-framing each floor level and adding a new conc/cmu elevator core (13'x22'). Now the shaft needs to be designed to resist the total seismic lateral forces, which, after based on NYC seismic code, the factored design moment at base= 8,400 k-ft.
