T/SDCEAS 10025-2023 The technical standard for installing mechanical smoke exhaust facilities within concrete cavity floor structure

Scope

Scope: 1.0.1 To standardize the design, construction, and acceptance of built-in mechanical smoke exhaust systems in cast-in-place or precast integral concrete ribbed hollow floor structures in industrial and civil buildings, implement national technical and economic policies, ensure advanced technology, safety, reliability, economic rationality, and quality assurance, and formulate this standard. 1.0.2 This standard applies to the design, construction, acceptance, and maintenance management of built-in mechanical smoke exhaust facilities in concrete ribbed hollow floor structures in newly built or renovated industrial and civil buildings. 1.0.3 Equipment for built-in mechanical smoke exhaust systems in concrete hollow floor structures shall be selected from products that comply with current national standards and relevant access systems. 1.0.4 The design, construction, acceptance, and maintenance management of built-in mechanical smoke exhaust systems in concrete hollow floor structures shall, in addition to meeting the requirements of this standard, also comply with the relevant provisions of current national standards. Main Technical Content: 3.0.1 The smoke exhaust cavity and adjacent cavities shall be made of non-combustible materials and shall not produce toxic substances during a fire. The back fire surface of the smoke exhaust cavity shall ensure that the temperature does not exceed 80°C during smoke exhaust, and shall meet the requirements of fire resistance. The fire resistance of smoke exhaust pipes installed in hollow floor structures shall comply with the relevant provisions of the current national standard GB 51251, *Technical Standards for Building Smoke Exhaust and Fire Ventilation Systems*. 3.0.2 The top and bottom plates and side walls of concrete assembled box smoke exhaust cavities shall comply with the relevant provisions of the current industry standard JGJ/T 207, *Technical Code for Concrete Hollow Floor Structures of Assembled

Development Information

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