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2010造价师技术与计量(超精华)4(2010 cost division technology and measurement (superessence) 4)
2010造价师技术与计量(超精华)4(2010 cost division technology and measurement (superessence) 4)
Solid railing;
54, Yupeng cantilevered length is generally 0.9-1.5 m, according to the structure of different, rain Peng plate and beam plate two; plate rain Peng root thickness of not less than 70mm, plate end thickness of not less than 50mm;
55, the vertical traffic links of the building space, mainly rely on stairs, elevators, escalators, steps, ramps and ladder and other facilities; which staircase as vertical traffic and emergency evacuation of the main transport facilities,
The most widely used;
56, the stairs generally by the ladder, platform, railings and handrails composed of three parts; staircase stepping steps generally should not exceed 18, and generally should not be less than 3;
57, stairs can be divided into outdoor staircase and indoor stairs; according to the nature of use, stairs can be divided into the main staircase, auxiliary staircase, evacuation staircase, fire staircase and so on; according to the materials used can be divided into wooden staircase,
Steel staircase, reinforced concrete staircase; according to the form can be divided into long-running, double-run, double-split, double-type, three-run, four-run, curved feet; spiral, arc, bridge, And so on;
58, reinforced concrete staircase according to the construction method is different, there are two kinds of cast-in-place and prefabricated assembly;
59, prefabricated assembly of gold reinforced concrete staircase can be divided into: small component assembly, medium-sized component assembly, large component assembly
60, small component assembly can be divided into: hanging staircase, wall-mounted stairs, beam-type staircase
1
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