2. The Exhaust Pipe of Kitchen and Toilet in Residential Buildings (JG/T 194-2006) promulgated by the Ministry of Construction is applicable to exhaust pipes made of various raw materials (except sulphoaluminate cement and portland cement, raw materials must obtain relevant new material application certificates).
3. The building materials industry standard "Glass Fiber Reinforced Cement Smoke Exhaust Pipe" (JC/T854—2008) promulgated by the National Development and Reform Commission is applicable to the residential smoke exhaust pipes made of sulphoaluminate cement and silicate cement with alkali-resistant glass fiber mesh. Sulfoaluminate cement and portland cement are the raw materials of exhaust port with stable performance.
4. Article 7.2.9 of the national standard Code for Fire Protection Design of Buildings (GB500 16—2006) stipulates that vertical tube wells for smoke exhaust, exhaust and garbage should be set independently; The shaft wall shall be incombustible, and the fire resistance limit shall not be lower than1.00h.
5. Article 9.4.3 of the National Standard Code for Residential Buildings (GB 50368—2005) stipulates that the installation of vertical shafts in residential buildings should meet the following requirements: cable vertical shafts, pipe vertical shafts, smoke exhaust ducts and exhaust ducts should be set independently, and the walls of vertical shafts should be made of incombustible components with fire resistance not less than1.00h. ..
Extended data
technical requirement
material
1, cement. No less than 425 cement should be used, and its performance should comply with the provisions of GBJ 175.
2. steel bars. First-class steel bars or cold-drawn carbon steel wires should be adopted. ! Its properties shall conform to the provisions of GB343 General Low Carbon Steel Wire or GB70 1 Ordinary Low Carbon Hot Rolled Wire Rod.
3. polymerization. The particle size of lightweight aggregate and fine stone should not be greater than 1/3 of the flue wall thickness, and their properties should comply with the Technical Specification for Lightweight Aggregate Concrete (JGJ5 1), JGJ52, JGJ53 and GBJ204.
4, the use of additives should comply with the provisions of GBJ 1 19.
Demonstration quality
1. There should be no exposed reinforcement, honeycomb, collapse and hollowing on the internal and external surfaces of flue products.
2. When the flow section of the flue is rectangular, the corners should be round. The reserved smoke inlet in the smoke exhaust pipeline should be unobstructed and free from blockage.
3. The inner surface of the flue shall be smooth and no cracks are allowed (except surface cracks and shrinkage cracks of mortar layer).
4. Under the following circumstances, it is allowed to repair the exhaust flue:
Sticky skin, pitted surface and honeycomb shall not exceed1/20 of the total area; Each piece does not exceed 50cm? .
Both ends of the flue are damaged, with the width not exceeding110 of the side length and the height not exceeding100 mm.
The main support partition at the end is damaged, the width shall not exceed110 of the side length and the height shall not exceed 20mm. ..
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