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What is the concrete construction of the tunnel invert
- The construction of concrete is related to the non - construction concretes
How to remove the template of the two lining trolley moving outside the tunnel
- The template is removed, the car generally has a fixed track, easy to move. What do not understand, you can secretly I hope to help you!s
Tunnel lighting design steps, 2 teachers said to design a template
- The pupil is 5 times as fast as the increases, which makes the dark adaptation time to defend much longer. Cone cells can produce or reduce pigment in 10 ~ 12min, and the rod cells are almost 60min need to produce all of the pigment, which makes it very difficult for people to adapt to a very dark environment. How long does it take, depending on the extent of illumination.s
When the two lining of the tunnel is used as the lining concrete of the two, how to lay out the trolley
- The next two large positioning along the side mode, re positioning of two small side mode along the point, then turn to check the center point and elevation, if not the positioning deviation is complete, then re adjust the positioning deviation! If you have time to measure the location of the site can be set up, then you do not nail this method, the five points directly to the elevation and mileage can be controlled for a long times
There are no recycling tunnel templates
- If it is a tunnel two lining car template, and the use of the tunnel after the car can continue to use the value of such a tunnel lining car basically has a market of two, but also to be recycled. The specific recovery and continue to use, mainly to see the two lining of the tunnel and the old and new without modification.s
On the measurement of total station
- The first instrument identification, according to the drawings issued by the tunnel portal design to determine, determine the portal after the slope portal to lofting, tunnel excavation and excavation contour checking (i.e. overexcavation measurement)s
Concrete construction technology of tunnel roof?
- Concrete construction technology of tunnel roof:Due to the main roof, the floor of a large amount of concrete pouring, consider the construction period and other factors, the site is equipped with 2 sets of automotive pump or HBT60 pump and 300m Phi pipe and a variety of accessories.s
What are the safety awareness of the tunnel lining formwork trolley?
- No special requirements, not special equipmentFirst of all, it must be the track, the sleeper to the sleeper rails
The classification of hinge installation method
- According to the base, the door cover hinge position, can have many different cross classification, according to the spatial features using hinge into four categories, how to use h...
Cement board wall
- Cement board wall is a flat building with cement as the main raw materials processing and production, it is between a gypsum board and stone free cutting, drilling, carving of buil...
How to lock sd card
- Do you know how to lock sd card? Smart phones play an important role in our daily life and work, especially for high-end people, smart phones are playing an important role in diffe...
what is basalt used for
- What are composite doors？Basalt is a kind of high-quality traffic building stone.Especially in the construction of highway, railway, port, airport runway,it is one of the best co...
Have you ever heard of plasterboard ceiling fixings
- Have you ever heard of plasterboard ceiling fixings?If not and if you are looking for a good plasterboard fixing manufacture,here is the one I am going to recommend to you. RJ part...