It is a large-diameter machine hatch with a fire resistance of 2 hours.
Since it meets the performance criteria for a fire-resistant structure (floor) of 2 hours, it also possesses "1-hour flame resistance." Due to the integrated structure of the lower cover and fire-resistant cover, the height of the product is minimized, allowing it to adapt to various slab heights. The fire-resistant hatch is compatible with all large-diameter machine hatches (excluding extra-large diameter machine hatches).
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basic information
"Fire Resistance Performance Test and Evaluation Method Document" 4.1 Fire Resistance Test Method *1 Fire-resistant structure (floor) 2 hours *2 Performance evaluation was conducted, meeting the following performance criteria. Additionally, this performance evaluation can also confirm that it meets the 'one-hour flame barrier performance of specific fire protection equipment.' *1 Excluding regulations regarding test specimen dimensions, performance was verified using small test specimens. *2 Refer to Article 107 of the Building Standards Act Enforcement Order (Technical Standards related to Fire Resistance Performance) ◆ Test Standards: Fire Resistance Performance Test and Evaluation Method Document 4.1 Fire Resistance Test Method ◆ Heating Time: 120 minutes ◆ Test Duration: 300 minutes ◆ Performance Evaluation ◇ Non-Damage The maximum or average temperature of the supporting structural member (top cover) that bears vertical loads must not exceed the following temperatures by the end of the test. Maximum Temperature: 500℃ Average Temperature: 400℃ ◇ Heat Insulation For 72 minutes from the start of heating, the temperature rise on the back surface of the test specimen must be an average of 140K or less, and a maximum of 180K or less. ◇ Flame Barrier For 72 minutes from the start of heating, the following criteria must be satisfied.
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Detailed information
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Fire resistance test for opening 600×600.
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Fire resistance test for opening 800×1800.
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Company information
Since our establishment, Chubu Corporation has been sending out kitchen equipment such as commercial shaved ice machines, vegetable processors, and food processors into the world, based on the technology cultivated as a cast metal manufacturer. We have also ventured into the construction-related field, steadily building our foundation as a building materials manufacturer up to the present day. Our lineup primarily supports the construction-related field with cast products such as roof drains, drainage equipment, manhole covers, as well as steel materials like grating, pit hardware, and metal products like underfloor inspection openings. By accurately reading the times and maximizing the development capabilities and casting technology we have cultivated so far, we design a safe and secure living environment from the ground up to support sustainable urban development, continuously creating as a familiar presence.
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