What are the main appraisal types and standards for house appraisal?

1. House safety appraisal

The house safety appraisal agency is requested by the entrusted party to conduct a comprehensive appraisal of the house and determine the content and scope of the house safety appraisal. The appraisal agency begins to investigate and analyze the original data of the house. , find out the history and current situation of the house, and conduct on-site inspections.

When a house is in a dangerous site or location, the geological conditions of the site where the house is located should be collected, investigated and analyzed, and the site hazard appraisal should be carried out. The current status of the house should be inspected on-site, and various damages and data should be recorded.

When necessary, it is necessary to use instrument testing and structural verification, conduct a comprehensive analysis of the data from the survey, survey, testing, and verification, demonstrate the qualitative nature, determine the danger level of the house, and provide reinforcement treatment opinions.

2. Classification of house safety appraisal:

(1) Factory building safety appraisal:

Customer factory inspection house safety appraisal: European and American customers are conducting factory inspections The factory is required to submit a "House Completion Acceptance Certificate". If the company is unable to provide it, it can entrust an independent third-party testing agency to conduct a house safety appraisal based on the current condition of the house, and provide reasonable reinforcement suggestions for components that do not meet safe use requirements. . Load-bearing inspection of factory equipment: Generally, it is an industrial building (with many factories, warehouses, production workshops and machine rooms). In order to meet the usage needs, it is necessary to add cranes, filing cabinets, mechanical equipment, containers and other equipment to the building floor or other load-bearing components ( (Later) Inspection and appraisal to understand whether the current load-bearing capacity of the building floor meets the safe use requirements of additional equipment, and provide reasonable reinforcement suggestions for components that do not meet the load-bearing capacity requirements and safe use requirements.

(2) Identification of primary and secondary school training stations:

According to the relevant document requirements published by the China Earthquake Administration and Dongguan Municipal Education Bureau and other relevant units, the safety engineering of primary and secondary school buildings must strictly comply with the " "Building Seismic Appraisal Standards", "Building Structure Inspection Technical Standards", "Civil Building Reliability Appraisal Standards", "Construction Engineering Seismic Protection Classification Standards", "Building Seismic Design Codes", "Flood Prevention Standards", and other relevant national standards and specifications. Professional planning, investigation and appraisal of school building structural reliability, earthquake resistance, comprehensive disaster prevention capabilities, etc.

Building safety appraisal before opening, before changing business and before annual qualification review of public places such as education and training institutions, student pick-up stations and so on.

(3) Hotel special industry appraisal:

"Guangdong Province Hotel Industry Public Security Management Regulations" (Guangdong Provincial People's Government Order No. 108) applies for hotel industry (operating accommodation for receiving tourists) A safety appraisal of the house must be conducted before special industry licenses, hotels, hostels, restaurants, hotels, guesthouses, buildings, guest houses, resorts, villas, sanatoriums, clubs, reception stations, etc., before opening, before changing businesses, and before annual qualification review .

(4) Construction surrounding impact appraisal:

Construction surrounding impact appraisal refers to the evidence preservation and safety assessment of the current situation of surrounding houses before construction, and the evaluation of the houses after construction. Assess the cause and extent of damage, and provide reasonable reinforcement suggestions for any damage that occurs.

(5) House modification appraisal:

A safety appraisal of the house is required before the use of the house is changed, the function is modified, or the number of floors is increased. Pre-renovation identification can fully understand whether the current load-bearing capacity of the building's foundation and main load-bearing components meets the safe use requirements after the transformation, and provide reasonable reinforcement suggestions for components that fail to meet the load-bearing capacity requirements and safe use requirements.

(6) Safety assessment of damaged houses:

Structure damage to houses caused by disasters such as fires, typhoons, lightning strikes, snowstorms, termite erosion, chemical corrosion, and car collisions.

The Dongguan Branch of the Guangdong Provincial Mechanical and Electrical Architectural Design and Research Institute evaluates the structural safety, usability and damage degree of the house after the disaster based on the original design requirements, national standards and the nature of the disaster, and prepares for later use. Provide reasonable and effective reinforcement treatment suggestions.

(7) Housing quality inspection and appraisal:

Concrete strength, steel bar layout, protective layer thickness, cross-sectional size, structural layout, steel bar strength, Internal defects of concrete components (honeycombs, pitted surfaces, voids), brick masonry strength, masonry mortar strength, flatness, verticality, floor thickness, steel properties, construction technology, bolt joint strength, weld quality, coating thickness, When there are doubts about pipe wall thickness and other parameters or relevant structural defects have occurred, engineering quality inspection and appraisal must be reviewed based on the original structural design drawings and national specifications and standards.