A few problems with steel framing installations

Frame structure is one of the more widely used structural forms in the current assembly building project, which has the characteristics of flexible building plan layout, large use of space, easy to separate, and better ductility.

Q1 What are the installation considerations for steel column butt joints?

In order to facilitate welding and weld detection, steel column segmentation position is generally in the floor elevation of about 1.2m up, the same project steel column butt joint plate specification is best to use a type, up to two, to facilitate the reuse of materials.

Q2 What are the installation considerations when connecting primary and secondary beams?

When the main and secondary beams are connected, if the secondary beam connection plate is in the main beam flange, the secondary beam installation will be more difficult, slower installation, it is recommended that the connection plate extends out of the main beam flange; for inclined beams and curved beams, when the curvature is large, attention should be paid to the curved beam web hole margins whether it is too short, otherwise it does not meet the requirements of the installation and design.

Q3 What are some other installation considerations for primary and secondary beam connections?

Primary and secondary beam installation on the one hand, we also need to pay attention to more than a certain length of steel beams according to the design requirements for pre-arching, on the other hand, for the well beam segmentation, the short direction of the steel beams should be the main beam, the long direction of the beam for the secondary beams, the short direction of the short beams are not disconnected, the long direction of the beams are disconnected, do not engage in the opposite, or easy to deflection after installation.

Q4 What are the installation considerations for the location of the drop panel?

For the location of the bathroom, equipment room, etc. need to lower the plate, be sure to check whether the architectural drawings and structural drawings are consistent, if you need to lower the plate, lower the plate at the location of the steel beams need to be added to the joist before pouring the concrete floor slab.

Q5 What are the installation considerations for a column starting on a beam?

For the beam up column nodes, if the steel column is high, it is not recommended to use the steel column is not segmented, on-site positioning welding method, the reason is that the positioning of the steel column is often not welded immediately after the steel column needs to be fixed firmly with a cable, otherwise there is a risk of overturning; the second is the higher steel column on-site installation is not good to locate, if there is an error in the positioning of the reworking of the amount of work is large.

Q6 What are the installation considerations for column top nodes?

Column top sealing plate should not be made into the form of internal stiffening, should be slightly larger than the cross-section of the steel column, to prevent water leakage in rainy days; in addition, the column top elevation should be higher than the top of the beam 20-50mm to ensure that the beam-column connection on the edge of the flange weld foot size in line with the specification requirements.

Q7 What are the installation considerations for steel joist floor joist?

Reinforced truss floor joist is a combination template that welds steel truss and galvanized compression steel plate into one, which reduces the erection and dismantling of template, and has the characteristics of economy, convenience, safety and reliability. The construction of steel joist floor joist should be reasonable layout, minimize the loss and on-site cutting, and the root welding foot should be even and full when welding bolts on site.

Q8 What are the other installation considerations for steel joist floor joist?

The beam-column nodes generally use angle steel to support the steel joist floor joist, but for the larger diameter round tube steel frame columns, it is recommended to use the outer ring plate of steel columns, which not only makes the end of the floor joist plate more reasonable, but also solves the problem of leaking slurry during the pouring of concrete on the floor slabs, which ensures the quality of pouring concrete on the floor slabs.

Q9 What are the installation considerations for electromechanical cavities?

The steel structure is installed before the electromechanical installation, and the electromechanical holes need to be reserved on the steel beams first. In order to ensure the subsequent smooth installation of the electromechanical pipelines, it is necessary to check the positions and sizes of the holes in advance and make up for them according to the specifications.

Q10 What are the installation considerations for stairs?

Stairs in the frame structure are mostly steel stairs, steel stairs in addition to the need to pay attention to the direction of the start, the height and width of the tread, the direction of the patterned surface, stairs, but also need to pay attention to the beginning of the tread should not exist gap.