Columns

Columns are used to support loads from roof and floor elements, and protective structures. The nomenclature of precast reinforced-concrete columns includes products of up to 16 m in length and with section ranging from 300х300 to 1000х1000 mm, made of grade B40 concrete. The specifics of available forms allows for manufacture of columns of random or variable section within the weight range of products (20 tons). The production process provides for all requirements on the quantity and shape of corbels necessitated by design solutions of mounting joints that are specific for each project. The Plant also offers round-section columns that range from 300 to 500 mm in diameter, and can be as high as 4 m.

Installation of columns includes positioning and centering in foundation socket at the level of “- 1.4 m” followed by cavity fill-up with concrete. Precast reinforced-concrete columns are used for single-storey and multi-storey buildings. Column height of 16 m allows for use of continuous columns in several storeys; this, however, does not exclude the option of a discontinuous scheme with columns joined at each storey. Depending on overall dimensions, columns may ensure fire-resistance within 2 to 3 hours, which adds to the versatility of use of such structures in buildings of various types.
 

Standard dimensions

Profile	а, mm	b, mm	Weight, kN/rm
300/300	300	300	2.2
300/400	300	400	2.94
400/400	400	400	3.92
400/500	400	500	4.9
500/500	500	500	6.12
500/600	500	600	7.35
600/600	600	600	8.82
600/700	600	700	10.3
700/700	700	700	12.02
700/800	700	800	13.73
800/800	800	800	15.7
800/900	800	900	17.64
900/900	900	900	19.85
1000/1000	1000	1000	24.5
Ø300	300	300	1.18
Ø400	400	400	3.08
Ø500	500	500	4.8

Column height of 16 m allows for use of continuous columns in several storeys; this, however, does not exclude the option of a discontinuous scheme with columns joined at each storey.

Depending on overall dimensions, columns may ensure fire-resistance within 2 to 3 hours, which adds to the versatility of use of such structures in buildings of various types.

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Fixation of columns, beams and foundation slabs

Fixation of reinforced-concrete columns to foundation is done via embedding in reinforced-concrete sockets; or, via joining of embedded elements in columns and anchor bolts in foundations. Connection of columns (one over one) is done via anchor bolts protruding from column head joined with embedded elements (shoes) located in column base. Connection of columns to horizontal intermediate beams is done according to the classic scheme involving cantilevers, as well as via embedded cantilever systems composed of column part and hinged connection of beam end.

Connection of columns to horizontal roof beams is done via anchor pins.

The classic scheme of connection of beams or joists to columns requires support by corbels. Corbels are located either entirely under beam, or within its available height. Location of cantilevers in columns may be at various marks, and within various column planes, which allows for column use in buildings of vari-level floors and roofs.

Standard dimensions of corbels