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EP0467912B1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Slab support system

Assignee: Deltatek Oy
•
Filing: 1990-04-04
•
Granted: 1994-06-29
•
Expires: 2010-04-04
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Abstract

Abstract The invention relates to a fire-resistant prefabricated steel beam arranged to act together with concrete as a load-bearing jointing construction for various slabs. The beam comprises two web portions and horizontally projecting flange portions extending beyond the web portions. To achieve a simple beam easy to install at least each web portion (2) with its horizontally projecting flange portion (1) is formed by an integral material strip so that the web portion (2) and the projecting flange portion adjoining it form a jointless entity and so that the web portion (2) is in a slanting position with respect to the flange portion. The web portions (2) are arranged side by side so as to slant towards each other and interconnected at edges closer to each other by means of a horizontal upper part (3). The edges of the web portions (2) farther apart from each other are interconnected by means of a plate (4) welded to the web portions. Openings (14) are formed close to the upper edges of the web portions (2) and/or in the horizontal upper part (3) to fill the space defined between the upper part (3) of the web portions (2) and the plate (4) with concrete in a manner known per se.

Inventors

  • 👤 Jorma Kyckling
  • 👤 Pertti Levo
  • 👤 Pekka Nykyri

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 23:55
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/29; E04C3/293; E04C3/04; E04C3/06; E04C3/065; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/941; E04B1/943; E04B5/00; E04B5/16; E04B5/17; E04B5/23; E04B5/29

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 221 words
A slab support system comprising a fire-resistant prefabricated steel beam and a plurality of slabs, said beam acting with concrete as a load-bearing jointing structure for said slabs, said beam comprising two web portions and horizontally projecting flange portions extending beyond the web portions, characterized in that at least each web portion (2, 32) with its horizontally projecting flange portion (1, 31) is formed by an integral material strip so that the web portion (2) and the projecting flange portion adjoining it form a jointless entity and so that the web portion (2, 32) is in a slanting position with respect to the flange portion, the web portions (2) being arranged side by side so as to slant towards each other and interconnected at the edges of said web portions (2) closer to each other by means of a horizontal upper part (3, 33), and at the edges of said web portions (2) farther apart from each other by means of a lower plate (4, 34) welded to the web portions, and openings (14, 20, 40) being formed close to the upper edges of the web portions (2, 32) and/or in the horizontal upper part (3, 33), the space defined between the upper part (3, 33) of the web portions (2, 32) and the plate (4, 34) being filled with concrete.
Claim 2
Dependent Claim 34 words
A slab support system according to claim 1, characterized in that the upper part (3) interconnecting the web portions (2) at the edges closer to each other is formed by a separate material strip.
Claim 3
Dependent Claim 33 words
A slab support system according to claim 1, characterized in that the web portions (32), the projecting flange portions (31) and the horizontal upper part (33) are formed by an integral basic profile.
Claim 4
Dependent Claim 53 words
A slab support system according to claim 1, 2 or 3, characterized in that projections (5, 22, 42) protruding from the plane of the web portion (2, 32) or the upper part (3, 33) are formed in the edges of the openings (14, 20, 40) to ensure adhesion between the concrete and steel.
Claim 5
Dependent Claim 46 words
A slab support system according to any of the preceding claims, characterized in that the lower plate (4, 34) connecting the lower edges of the web portions (2, 32) is positioned above the plane of the lower surfaces of the projecting flange portions ( 1, 31).
Claim 6
Dependent Claim 33 words
A slab support system according to any of the preceding claims, characterized in that at least one additional steel plate (9) and/or concrete steel is attached to the horizontal upper part (3, 33).

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