欧美成人性色xxxx视频-欧美成人性色区-欧美成人性色生活片免费在线观看-欧美成人性视频播放-a级特黄-a级亚洲片精品久久久久久久

Drawing attention to the main points which have a short column of steel 1, drawing scale: according to the proportion of the construction on the graph, the pantograph must be amended, when otherwise showing size and numbers may look clear. 2, when ...

To ensure the safety of construction steel structure with a characteristic Han 1, good airtight performance Due to be able to do a thorough seal welded structure, some requests airtight and watertight good pressure vessels, large oil depots, gas ca...

Multi-tall steel structure system selection and design Now the construction of multi-level home country for the selected steel structure construction system is divided into four categories:1) pure construction methods;2) construction of the support ...

Steel demand could pull the market one?   Steel construction has spread in developed countries, the construction of steel structures in Japan accounted for 71 percent, 70 percent in Britain, the United States more than 50%, while China account...

Single steel plant support and connecting node seismic Accounting Guangzhou Steel single steel plant support and connecting node how seismic calculation?Vertical roof support truss webs should be able to receive and impart roof horizontal seismic ac...

Seismic structure of single steel plant what way? Seismic structure of single steel plant what way?1. Roof construction approach: simply the same way single-seismic construction steel plant roof and reinforced concrete columns plant.2. column, beam ...

Steel residential floor plan What are the requirements 1. In addition to withstand vertical load floor and pass it to the frame, but also the level of force to each column, thus stiffness, the integrity and bearing capacity of the floor plane is als...

Steel Structure Design slenderness ratio is calculated First, the two-limb combination member: Where λx for x-axis slenderness ratio of all member; λl disagreement minimum stiffness axis 11 of slenderness ratio, which is calculated length is taken ...

Guangzhou Steel tells you: steel girder segment energy dissipation structure connected column which requests? Link beam connection with a rigid frame column nodes, connected with the general framework slightly different pillars.When energy beams and...

Single steel plant horizontal, vertical seismic calculation method What? Plant lateral seismic calculation Normally, the roof should be included in the spatial deformation analysis; use light roof, the plane can be calculated bent frame. Guangzhou S...

Steel Structure Stability Plan What principles? (1) Guangzhou Steel structure necessary to consider the overall layout of the system and the stability of the entire part of the requirements. Now most of them are constructed according to the planning...

Guangzhou Steel tells you: King heavy steel roof construction skills all improve First, the large steel structure construction is mainly handling all raise the following three aspects:(1) large steel roof assembly handling skills: steel roof assembl...