-
Anonymous users2024-01-24Looking at the type of ceiling, when there is a fire hazard in the closed ceiling, the detection area should be divided separately and fire detectors should be set up.
The setting of smoke and fire detectors in the grille ceiling shall comply with the following provisions:
1. When the ratio of hollow area to total area is not more than 15, the detector should be set under the ceiling.
2. When the ratio of hollow area to total area is greater than 30, the detector should be set above the ceiling.
3. When the ratio of hollow area to total area is 15 30, the setting position of the detector should be determined according to the actual test results.
4. When the detector is set above the ceiling and the fire alarm confirmation light cannot be observed, the fire alarm confirmation light should be set under the ceiling.
5. In places affected by piston wind such as subway platforms, when the ratio of hollow area to total area is 30 70, the detector should be set up above and below the ceiling at the same time.
1. Material properties of the ceiling gusset.
However, pure aluminum is softer, so the aluminum buckle plate on the market is actually a ceiling made of aluminum alloy, there are aluminum-magnesium alloy aluminum-manganese alloy and other aluminum-manganese alloy buckle plates with high hardness, aluminum-magnesium alloy increases the hardness at the same time, but also adds some brightness, good texture, strong decorative effect, high-quality aluminum-manganese alloy buckle plate because of good corrosion resistance, commonly known as stainless aluminum, special tips: there are some inferior substrates on the market, using garbage aluminum, recycled aluminum or miscellaneous aluminum, etc., the product is easy to deform and oxidize, and some are even recycled scrap aluminum containing chromium, lead, mercury and other harmful substancesThis kind of aluminum gusset substrate has a low price and a certain thickness, which is very deceptive. >>>More
Unless this is a grille ceiling, other closed ceilings of Gehua are not good, and need to be set under the ceiling.
If you are afraid of waste, dig out a layer of mold on the outside, and eat it after steaming. Remember that steamed buns can't be kept in the refrigerator or outside for a long time, unless they go into the freezer.
Generally speaking, no. There will be smoke alarms, and water may be sprayed in case of fire or smoking.
1.Put the steamed bread into a plastic bag, seal it and put it on the sunny windowsill, and after about (3) days, you will see some (black and green) colored substances on the steamed bread, which is (fungus). If you put the plastic bag in the refrigerator compartment, you will find that (the steamed bread is restored to its original state).