"Code for Fire Protection Design of Buildings", "High-rise Civil Construction"In the relevant provisions of the Code for Building Fire Protection, the installation of normally open fire doors,The specific location and parts of normally closed fire doors are not clear. On account of The ambiguity of the code provisions causes the designers to design fire doors "Misunderstanding" on. In fact, Article 7.5. 2 of theConstruction Regulations This paragraph stipulates that normally open fire doors should be able to automatically close in case of fire Closed, and should have the function of signal feedback. This article has made it clear that the regular The difference in control methods between open fire doors and normally closed fire doors,Normally open fire door must be linked with automatic fire alarm system Therefore, architectural professional designers only indicate prevention in architectural drawings There is no clear control method for the fire resistance limit of the fire door. Electrical professional designers just walk around, "naturally" Ignore the control method of fire doors. Some designers think that Electrically controlled normally open fire door, complex structure, high price Expensive, so we deliberately avoid using normally open fire doors.
2. Due to the manufacturers of normally open fire door accessories on the market The company does not promote its products enough, which makes designers and constructors The unit and fire supervision department have no opinion on the principle and performance of the product
Understand.
3. For the sake of beauty, convenience, anti-theft safety, the user unit It is necessary to use fire rolling shutters and security doors instead of fire doors in the design.
4. The user cannot correctly understand the normally closed fire door In peacetime, on the grounds of ensuring "smooth safety exits", Make the normally closed fire door in a normally open state.
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