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one, building construction classification and grade
can be classified in different ways:
1, are divided into three categories according to use: industrial buildings, agricultural construction,cheap nike air max shoes, civil construction.
2, according to the main load-bearing structure of the material is divided into five categories: adobe - wood, brick, brick, reinforced concrete structure,nike air max shoes, steel structure.
3, by way of load-bearing structures are divided into four categories: wall bearing type, load-bearing skeleton, and internal skeleton bearing type, spatial structure of load-bearing type.
4, civil construction layers divided by five categories:
a, low-rise buildings: the main means 1 to 3 story residential building.
b, high-rise building: mainly refers to the 4 to 6 story residential building.
c, in the high-rise building: mainly refers to the 7 to 9 story residential buildings.
d, high-rise building: mainly refers to the 10 to 30 story residential building or the total height of more than 24 meters of public buildings and comprehensive building (not including single-height of more than 24 meters of the main building.)
e, high-rise building: over 100 meters of the building.
level of the building is the importance of fire safety, durability and the period of the building level by different angles. Civil division level may be in the following ways:
1, divided into five of importance such as:
a, PL: a major memorial, historical, international and national types of architecture.
b, A-level: High residential buildings and public buildings.
c,nike air max sale, B: intermediate residential buildings and public buildings.
d, C class: General residential buildings and public buildings.
2, divided by four fire performance: fire resistance rating is divided into four buildings. Standard fire resistance rating is based on the main components of the combustion housing and fire resistance determined.
3, by durable life of sub-four:
a, a durable life of 100 years for major construction and high-rise buildings.
b,nike air max cheap, two durable life of 50 to 100 years, for general construction.
c,nike air max 2010, three durable life of 25 to 50 years for secondary buildings.
d,nike air max, four durable life of 15 years for temporary buildings.