insulated slab interior load limits - Eng-Tips
2002年10月24日 · The slab was supposed to be 6" thick, but after the blue board insulation and radiant floor heat tubing, and I'm afraid it is more like 3" of actual concrete and wire mesh. I'm inclined to take Boo1's advice.
Frost Protection Pit slab/foundation - Eng-Tips
2006年8月21日 · I am considering 2" rigid polystyrene under and up on the side of the footing... Reportedly, 1" is equvalent to 4' of earth cover. My total bearing preasure is around 600psf and reportedly blue board insulation's compresive strenght is around 2,150 psf.
insulated slab interior load limits - Concrete Engineering general ...
2002年10月24日 · Check the specs on the insulation, some of the rigid insulation boards have pretty high compressive strengths. You may be able to distribute the stair load over a large enough area to make it work. RE: insulated slab interior load limits
How to insulate a shallow water line 2 - Eng-Tips
2008年4月7日 · the R-value of your total insulation cross-section and the distance that the blueboard extends away from the centerline are both important factors. there are other factors that can help but i would not be consider (1.if it is a yard area, you may get some insulation value from the snow 2. if it is a main line, the water may not have the ...
Rigid Roof Insulation Weight - Structural engineering general ...
2017年10月23日 · ASCE states that rigid roof insulation weighs 1.5 psf per inch of thickness, whereas, polyiso insulation, like Thermax, is < 0.25psf per inch.
Fire barrier for ceiling foam insulation 1 - Eng-Tips
2014年2月25日 · Currently the design provided a 2 hr rated gyp board ceiling to protect the insulation. The insulation itself is 15 mins rated as required by NFPA 101 for foam insulation. But since the room is required to have 2 hour separation, they said (designer) the ceiling should be 2 hr fire rated too.
Sill Plate Overhang - Structural engineering general discussion
2017年1月12日 · I have had various contractors contact me about overhanging the sill plate of a 2x6 wall 1.5 inches beyond the foundation to flush out the wall framing with the rigid insulation for the foundation. I have seen references for allowable overhangs of 1/3 the wall thickness and 1/2 the thickness of the plate.
Megger Test - Electric motors & generators engineering | Eng
2005年8月13日 · Owing to the nature of the insulation systems used in HT machines such as this, a simple megger test will prove inconclusive. What is required is a Polarization (Or PI) test. The issue is covered by IEEE standard No43 and is a lengthy and involved subject. As Laundry says its best left to the experts.
Sill plate on foundation - lack of full bearing - Structural ... - Eng-Tips
2007年10月2日 · We have a 12" thick wood framed wall which structurally only needs to be a 2x6 wall but due to desired insulation values the architect is wanting them as 12 inches thick. The contractor does not want to pour a 12" thick concrete wall, rather he wants to do an 8" ICF wall with 2" of insulation on each side of the concrete icf wall.
What colour are plus and minus? - Circuit design | Eng-Tips
2003年11月10日 · I always use black for zero volts. Blue for -12/15 V and red for +12/15 V. If there are other voltages I use orange for the positive (say +24 V) and violet for the negative (say -24 V). There is a problem here. An ordinary european electrical installation normally uses black for phase (L) and light blue for neutral (N).