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| calzap:
--- Quote from: james_s on April 13, 2021, 06:06:40 am --- --- Quote from: floobydust on April 13, 2021, 04:10:30 am --- --- Quote from: Monkeh on April 13, 2021, 01:37:39 am ---What on earth makes you think that's a wooden roof? --- End quote --- I see a (modified) bitumen roof with wood fascia. A "fire suppression system" does nothing if that lights up. It's common problem in building fires here, the roof and trusses (which are above all the sprinklers) can start burning and the fire crawls along the roof. Firefighters have to dump water despite the interior not being on fire at all. I would think buildings in the UK have similar issues, with flat tar roofs? --- End quote --- Wood roofs are typical on that sort of building, I don't recall the name they call buildings of that style but the walls are cast in place reinforced concrete with wooden beams running across, supporting a plywood roof that is covered in a weatherproof outer layer. All three of the light industrial complexes my friends' shop has been been built in that way. --- End quote --- Often done as tilt-up construction. Floor slab is poured. After it hardens, forms for wall sections are put on the floor, and the wall section concrete is poured. After wall sections are hard, they are hoisted into place with a crane. Has been most popular in the U.S., Australia and NZ. Wikipedia describes it pretty well. Mike in California |
| tautech:
--- Quote from: calzap on April 13, 2021, 05:25:36 pm --- --- Quote from: james_s on April 13, 2021, 06:06:40 am --- --- Quote from: floobydust on April 13, 2021, 04:10:30 am --- --- Quote from: Monkeh on April 13, 2021, 01:37:39 am ---What on earth makes you think that's a wooden roof? --- End quote --- I see a (modified) bitumen roof with wood fascia. A "fire suppression system" does nothing if that lights up. It's common problem in building fires here, the roof and trusses (which are above all the sprinklers) can start burning and the fire crawls along the roof. Firefighters have to dump water despite the interior not being on fire at all. I would think buildings in the UK have similar issues, with flat tar roofs? --- End quote --- Wood roofs are typical on that sort of building, I don't recall the name they call buildings of that style but the walls are cast in place reinforced concrete with wooden beams running across, supporting a plywood roof that is covered in a weatherproof outer layer. All three of the light industrial complexes my friends' shop has been been built in that way. --- End quote --- Often done as tilt-up construction. Floor slab is poured. After it hardens, forms for wall sections are put on the floor, and the wall section concrete is poured. After wall sections are hard, they are hoisted into place with a crane. Has been most popular in the U.S., Australia and NZ. Wikipedia describes it pretty well. Mike in California --- End quote --- Would be nice if it were so but sadly not as few slab layers are capable of laying a perfectly flat slab so here we have had professional tilt slab companies for some decades. Finished and cured tilt slabs prefitted with lifting eyes are trucked on edge from the tilt slab plants to construction sites where they are lifted from trucks and placed straight into position were they are strapped to adjoining slabs and temporarily held vertical with adjustable building props until roofing trusses and 2nd story steelwork can be fitted at which time they are considered a safe structure. Mini tornado flattened some stood and braced slabs a couple years back killing some workers. |
| Nusa:
You're talking about modern construction techniques. The building in question was built during WWII using brick and steel construction. The whole complex (Defense Depot Ogden) remained military until about 25 years ago, and is now known as Business Depot Ogden. Some of the warehouses are still owned and operated by the military, but the complex as a whole is now commercial. There's an interior picture of one of the old warehouses here, clearly showing the steel construction inside the shell: https://www.boyerbdo.com/history/ |
| floobydust:
Yes, wood roof on steel trusses mostly, there are huge timbers in old pics but a newer pic (brewery) shows them replaced with new concrete and steel. I imagine the buildings are all renovated. Back then lumber was plentiful. It's very difficult with old buildings to meet modern NFPA fire safety codes. They usually don't have enough exits or an updated fire-suppression system. Sprinklers being under the roof are useless and in the pic pipes extend outside, under the overhang - those pipes freeze here in winter. The military history of the area is incredible 5,000 POW's working there in WWII. B-17's being assembled. "The soil and groundwater beneath Business Depot Ogden have been polluted with trichloroethylene, vinyl chloride, arsenic, lead, cadmium, mercury, barium and pesticides. The toxic mix of chemicals is the result of decades of cavalier disposal and burning of military-grade trash at the 1,100-acre former military facility, according to EPA records." |
| gnif:
See: https://www.eevblog.com/forum/chat/website-error-reports/msg3548995/#msg3548995 |
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