In drilled shaft construction, rebar cages are generally utilized to reinforce the shaft throughout excavation. To retain the strength of this cage as well as complete the entire construction project successfully, the design of the cage should be perfect.
Normally, a rebar cage for a drilled shaft comprises of longitudinal bars which are allocated with uniform spacing along the boundary of a cylinder.
In order to reinforce these bars, steel is arranged transverse to the bars and connected with ties, clamps or welds. Other elements of rebar cages may contain hoops for sizes, guides for centering the cages in the borehole and the premie inside of the cage, and stiffeners and pickup devices applied to facilitate lifting the cages.
Larger cages should contain temporary or permanent strengthening components to get rid of permanent distortion due to the stresses of lifting and placing.
As rebar cages are vital drilled shaft construction, it is essential that these cages should be properly constructed on the basis of a calculation of the stresses that it will endure.
The amount of reinforcing steel in a rebar cage should adhere to the structural requirements, taking into account combined stresses of axial load, lateral load and moment.
Properties of Steel Used for Rebar Cages
The American Society for Testing and Materials (ASTM) defines various steels which are employed for reinforcing drilling shafts.
The American Association of State Highway and Transportation Officials (AASHTO) approves most of these ASTM steels for being applied in building rebar cages for drilled shaft construction.
Normally, the steel accessible for these cages is AASHTO M 31 (ASTM A 615) in Grade 40 or Grade 60. If welding is required, then weldable steel, like ASTM A 706, should be utilized.
In case, there is risk for corrosion, galvanized or epoxy-coated steel are useful for longitudinal and transverse reinforcement. This is often stated for marine environments where the chloride content of ground or surface water is extreme.
As nicks and blemishes in the coating may happen at the time of the lifting and disposition of the rebar cases, rapid corrosion may occur. Under this situation, rebar without epoxy should be utilized and the drilled shaft should be filled with a low-permeability concrete to enhance the resistance strength against corrosion.
In unusual situations, high strength reinforcement is suitable. It may comprise of threaded couplers for splice connections and higher-strength rebar.
Contractors should compute the structural requirements of a drilled shaft cautiously while deciding the requirements of a rebar cage.
To get more details, go through the following articlewww.pilebuck.com
~~~~~~~~~~~~~~~~~~~~~~~~
Published By
Rajib Dey
www.constructioncost.co
~~~~~~~~~~~~~~~~~~~~~~~~
Normally, a rebar cage for a drilled shaft comprises of longitudinal bars which are allocated with uniform spacing along the boundary of a cylinder.
In order to reinforce these bars, steel is arranged transverse to the bars and connected with ties, clamps or welds. Other elements of rebar cages may contain hoops for sizes, guides for centering the cages in the borehole and the premie inside of the cage, and stiffeners and pickup devices applied to facilitate lifting the cages.
Larger cages should contain temporary or permanent strengthening components to get rid of permanent distortion due to the stresses of lifting and placing.
As rebar cages are vital drilled shaft construction, it is essential that these cages should be properly constructed on the basis of a calculation of the stresses that it will endure.
The amount of reinforcing steel in a rebar cage should adhere to the structural requirements, taking into account combined stresses of axial load, lateral load and moment.
Properties of Steel Used for Rebar Cages
The American Society for Testing and Materials (ASTM) defines various steels which are employed for reinforcing drilling shafts.
The American Association of State Highway and Transportation Officials (AASHTO) approves most of these ASTM steels for being applied in building rebar cages for drilled shaft construction.
Normally, the steel accessible for these cages is AASHTO M 31 (ASTM A 615) in Grade 40 or Grade 60. If welding is required, then weldable steel, like ASTM A 706, should be utilized.
In case, there is risk for corrosion, galvanized or epoxy-coated steel are useful for longitudinal and transverse reinforcement. This is often stated for marine environments where the chloride content of ground or surface water is extreme.
As nicks and blemishes in the coating may happen at the time of the lifting and disposition of the rebar cases, rapid corrosion may occur. Under this situation, rebar without epoxy should be utilized and the drilled shaft should be filled with a low-permeability concrete to enhance the resistance strength against corrosion.
In unusual situations, high strength reinforcement is suitable. It may comprise of threaded couplers for splice connections and higher-strength rebar.
Contractors should compute the structural requirements of a drilled shaft cautiously while deciding the requirements of a rebar cage.
To get more details, go through the following articlewww.pilebuck.com
~~~~~~~~~~~~~~~~~~~~~~~~
Published By
Rajib Dey
www.constructioncost.co
~~~~~~~~~~~~~~~~~~~~~~~~
This comment has been removed by the author.
ReplyDeleteYou will require a document proving your present marital status. More information on kamurjshin on www.kamurjshin.am.
ReplyDeleteIt is possible to list your premises on the very best real estate websites and manage your listings with the user friendly interface on this web.
ReplyDeleteOur company is extremely happy to provide you with professional advice on any sort of mission and deliver prompt service if you want Commercial roofing contractors ct. The Connecticut remodeling company is ready to deal with any size job.
ReplyDeleteThe most crucial stage of the design process is the testing and redesign phase. During this phase, a new solution is created to address any issues. If you are curious to know more about field testing services, here you can get more information about it.
ReplyDeleteYou will need to consider a variety of factors to build a bridge or other structure. Whether you want to be a geotechnical engineer or a geologist, you will need to study the soil and other manmade materials. You are curious to know more about environmental engineering, head over to the website.
ReplyDeleteConstruction payroll services provide additional benefits. They can automate the process and save you a lot of time. For example, they can generate reports that will show your workers' compensation costs. Get more interesting details about cis payroll services check out this site.
ReplyDeleteA material testing lab is an off-site facility used to test construction materials. These facilities use nuclear gauges to measure the strength and durability of different construction materials. They are also accredited by industry-recognized organizations. For more information on engineering firm, read me.
ReplyDelete