GB2060020A - Pre-cast concrete joist for floors - Google Patents
Pre-cast concrete joist for floors Download PDFInfo
- Publication number
- GB2060020A GB2060020A GB7902604A GB7902604A GB2060020A GB 2060020 A GB2060020 A GB 2060020A GB 7902604 A GB7902604 A GB 7902604A GB 7902604 A GB7902604 A GB 7902604A GB 2060020 A GB2060020 A GB 2060020A
- Authority
- GB
- United Kingdom
- Prior art keywords
- joists
- blocks
- joist
- floor
- abutments
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
- E04B5/046—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement with beams placed with distance from another
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Floor Finish (AREA)
Abstract
The joist comprises an elongate beam to be supported between bearings and having two opposed flanges on which rectangular standard building blocks will rest as an infill. The outer edges of the flanges are stepped back so as to form a bearing surface bounded on their inner edges by glazing-nib-like abutments which locate the blocks longitudinally. The joist is of I-section with a depending projection for sitting on supports and with the upper crossmember narrower than the lower crossmember forming the flanges so the upper crossmember provides further abutments for locating the blocks. The upper surfaces of the blocks and the joists are flush and the entire surface can be grouted together and/or have a screed or other finish. <IMAGE>
Description
SPECIFICATION
Pre-cast concrete joint floor
Introduction
The floor consists of a pre-cast concrete joist at various spacings and incorporating as required standard building wall or floor blocks to form a suspended floor. The pre-cast joists span between supports.
By the formation of a nib on the joist it is possible to use standard blocks as an integral part of the floor which is grouted together to form a composite whole with or without structural toppings. I claim that this invention uses a precast member as distinct from a pre-stressed member and in this form adopts the use of standard building blocks as infillers as distinct from purpose made blocks. The presence of the restraining nib makes this possible.
The Joists
The joists are formed using concrete and reinforcement. The reinforcement is not prestressed. The joist has a vertical and horizontal nib which prevents the block from tipping even if the block has cracked. Manufacture of the joist is by casting or pressing.
Construction
The floor is constructed by placing the pre-cast joists on to supports, piacing blocks between the joists (although some times for structural reasons joists may be placed side by side) and then, if required, grouting the whole together.
1. A pre-cast concrete joist for floors comprises an elongate beam having two opposed flanges on which rectangular in-fill blocks will rest bridging between two joists and also having an abutment for locating each block transversely of the flanges.
2. A joist as claimed in claim 1 wherein at least some of the abutments are formed by stepping back the outer edges of the flanges so as to leave bearing surfaces bounded on their inner edges by glazing-nib-like abutments.
3. A joist as claimed in claim 1 or claim 2 wherein at least some of the abutments are formed by the joist having a general I-section with the upper narrower cross member of the I providing the abutments.
4. A floor comprising joists supported by supports above the ground, each joist comprising an elongate beam having opposed flanges and abutments and in-fill blocks resting on the flanges and bridging between two joists, the blocks being located in their longitudinal direction (i.e.
transversely to the flanges) by the abutments.
5. A floor according to claim 4 wherein the upper surfaces of the blocks and joists are flush.
6. A floor substantially as herein described with reference to the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (6)
1. A pre-cast concrete joist for floors comprises an elongate beam having two opposed flanges on which rectangular in-fill blocks will rest bridging between two joists and also having an abutment for locating each block transversely of the flanges.
2. A joist as claimed in claim 1 wherein at least some of the abutments are formed by stepping back the outer edges of the flanges so as to leave bearing surfaces bounded on their inner edges by glazing-nib-like abutments.
3. A joist as claimed in claim 1 or claim 2 wherein at least some of the abutments are formed by the joist having a general I-section with the upper narrower cross member of the I providing the abutments.
4. A floor comprising joists supported by supports above the ground, each joist comprising an elongate beam having opposed flanges and abutments and in-fill blocks resting on the flanges and bridging between two joists, the blocks being located in their longitudinal direction (i.e.
transversely to the flanges) by the abutments.
5. A floor according to claim 4 wherein the upper surfaces of the blocks and joists are flush.
6. A floor substantially as herein described with reference to the accompanying drawing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7902604A GB2060020A (en) | 1979-01-25 | 1979-01-25 | Pre-cast concrete joist for floors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7902604A GB2060020A (en) | 1979-01-25 | 1979-01-25 | Pre-cast concrete joist for floors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2060020A true GB2060020A (en) | 1981-04-29 |
Family
ID=10502720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7902604A Withdrawn GB2060020A (en) | 1979-01-25 | 1979-01-25 | Pre-cast concrete joist for floors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2060020A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2148965A (en) * | 1983-10-28 | 1985-06-05 | Trent Concrete Floors Limited | Dry-laid floors |
ES2217894A1 (en) * | 2001-04-03 | 2004-11-01 | Jaime Enrique Jimenez Sanchez | Forge for use during construction, has joists that is arranged on hollow part, and stern whose curved parts support joists, where contact part is connected with curved parts of stern |
-
1979
- 1979-01-25 GB GB7902604A patent/GB2060020A/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2148965A (en) * | 1983-10-28 | 1985-06-05 | Trent Concrete Floors Limited | Dry-laid floors |
ES2217894A1 (en) * | 2001-04-03 | 2004-11-01 | Jaime Enrique Jimenez Sanchez | Forge for use during construction, has joists that is arranged on hollow part, and stern whose curved parts support joists, where contact part is connected with curved parts of stern |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |