GB2265640A - Pour stop for concrete structure - Google Patents

Pour stop for concrete structure Download PDF

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Publication number
GB2265640A
GB2265640A GB9306746A GB9306746A GB2265640A GB 2265640 A GB2265640 A GB 2265640A GB 9306746 A GB9306746 A GB 9306746A GB 9306746 A GB9306746 A GB 9306746A GB 2265640 A GB2265640 A GB 2265640A
Authority
GB
United Kingdom
Prior art keywords
pour stop
channel member
clamping means
pour
stop
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Withdrawn
Application number
GB9306746A
Other versions
GB9306746D0 (en
Inventor
Jack Allen Mindenhall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HALFEN FIXING SYSTEMS Ltd
Original Assignee
HALFEN FIXING SYSTEMS Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HALFEN FIXING SYSTEMS Ltd filed Critical HALFEN FIXING SYSTEMS Ltd
Publication of GB9306746D0 publication Critical patent/GB9306746D0/en
Publication of GB2265640A publication Critical patent/GB2265640A/en
Withdrawn legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/41Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4107Longitudinal elements having an open profile, with the opening parallel to the concrete or masonry surface, i.e. anchoring rails
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32Floor structures wholly cast in situ with or without form units or reinforcements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B2005/322Floor structures wholly cast in situ with or without form units or reinforcements with permanent forms for the floor edges

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

An L-shaped pour stop comprises a metal channel shaped member (5) adapted to receive and retain therein holding means connected to or part of other structural elements, fixed to upper and lower sections of the vertical limb (3, 4) of the pour stop. Member (5) is fixed to the sections by connectors (30) which hold the member (5) against the rear face of the sections (3, 4). Anchor means (35) protrude from the connectors (30) to anchor the pour stop in the poured concrete. <IMAGE>

Description

POUR STOP This invention relates to a pour stop which incorporates a longitudinally extending channel therein. The pour stop of the invention is primarily intended for use in finishing off the edges surrounding a lift shaft or other opening in the floor of a building or similar structure which has been formed from poured concrete. The pour stop of the invention can however be used at the edge of any poured concrete structure to which other elements such as cladding panels need to be attached.
It is now commonplace to form buildings by erecting a framework of metal girders, placing corrugated steel sheeting between the girders and then pouring concrete on top of it to form the floor. The corrugated steel sheets (known as metal decking) also provide strength for the concrete and therefore less reinforcing rods need to be used so it is becoming increasingly popular as a fast building method. Each corrugated sheet of steel is connected to an adjacent sheet using pop rivets or other form of fixing means. In order to form an edge to the slab of concrete poured on top of the metal decking, it is normal to pop rivet an L-shaped piece of metal known as a pour stop to the metal decking, the upstanding part of the pour stop being of a height at least equal to the depth of the concrete to be poured to form the floor structure.Both the metal decking and the pour stop are usually manufactured from pre-galvanised steel, the pour stop being galvanised before it is folded into its L-shaped configuration.
From the foregoing, it will be appreciated that the pour stop provides a flat edge surface to the poured concrete so if other structures are to be attached to it, then these must be secured to the concrete slab or the pour stop. Expanding bolts do not provide a suitable fixing as the concrete is too thin and fixings are required too near the edge to resist the expansion forces. Known steel channel sections can be cast into the concrete to provide a strong safe fixing but this can normally only be done in the top surface of the poured concrete as the pour stop is not usually removed after the concrete has been poured in the way that plywood shuttering would be.
For the reasons explained, it is generally only possible at the present time to cast securing channels into the top surface of a concrete floor so suppliers of steel and glass curtain walling generally accept that the fixings there for have to be in the top surface only and adapt their cladding fixing systems to suit.
Designers of brick facades normally have to use expensive brackets to fix them to the steel beams forming the overall structure of the building.
Another problem arises when a lift shaft is to be formed in the floor because if normal pour stops are used such as plywood sheeting or L-shaped metal members, then the inside face of the lift shaft opening has no means for securing the guide rails and other ancillary lift equipment to the floor structure at each floor level. This means that this equipment has to be secured to the general structure of the building using expensive cantilever brackets.
Various attempts have been made to try and overcome these problems by providing a pour stop incorporating some form of fixing system. Attempts to dispense with the traditional L-shaped folded metal pour stop and casting a fixing system into the floor using traditional plywood shuttering has been found to be both slow and extremely labour intensive and therefore expensive. There have also been attempts to bolt a known metal fixing channel to an L-shaped folded metal pour stop provided with slots along its length to align with the channel fixing located behind it but these have not been very successful because the slots are expensive to form and the users did not like taking the risk that the slots might not align exactly with the fixing channel located behind them.
The problem to be solved therefore is to provide a pour stop which incorporates a suitable fixing system which is both cheap to manufacture and easy to use.
According to the present invention, there is provided a pour stop for use in casting concrete comprising an edge barrier with a channel shaped member extending at least partially therealong to provide an outwardly opening channel, the channel member being shaped to receive and retain holding means connected to part of other structural elements when inserted therein, the edge barrier comprising first and second limbs located on either side of the outwardly opening channel by at least one clamping means attached thereto, said clamping means including a bridging portion which locates the channel member in position relative to the first and second limbs and anchoring means extending rearwardly from the clamping means which, in use, are set into concrete poured into the space behind said edge barrier.
Preferaby the pour stop is L-shaped in cross section, the channel member being provided on the generally upright limb member. Conveniently the outwardly opening channel is a longitudinally extending slot in a front face of the channel member defined between a pair of inwardly facing lips.
Preferably the clamping means holds the channel member against the rear face of the first and second limbs.
Suitably, the channel member is of box cross section with a bottom wall connected by two side walls to a front wall in which the slot is located.
Preferably, the anchoring means extend rearwardly from the bridging portion of the or each clamping means. In a preferred arrangement, the anchoring means extend rearwardly intermediate the side faces of the channel member and normal thereto.
The or each clamping means is preferably top-hat shaped in cross section, the or each bridging piece being shaped to make a close-fit around the channel member and having a pair of feet extending laterally in opposite directions from the base thereof and secured to the first and second limbs on either side of the channel member. The clamping means can either be a series of separate members spaced along the length of the channel member or formed as a single elongate member.
In one embodiment the or each bridging portion is secured to the channel member, for instance by one or more spot or tack welds or by rivets. However, it can be secured thereto by welding fillets along each side edge of the bridge portion.
Conveniently, the channel shaped member extends along the whole of the length of the pour stop.
In one embodiment, the first and second edge barrier limbs are generally coplanar with each other and normal to the outwardly open channel. They can however not be coplanar.
Preferably, the or each clamping means is formed in two parts connected together at the anchoring means.
Conveniently, the two clamping means parts are connected together by one or more spot or tack welds but other means of connection such as rivetting can be used. The or each clamping means is preferably also secured to the first and second edge barrier limbs for instance by spot or tack welding.
Preferred embodiments of the invention will now be described by way of example only with reference to the accompanying drawings in which: Figure 1 is a perspective view of a poured concrete floor with a lift opening therein formed using pour stops of the present invention; Figure 2 is a cross section of the structure of Figure 1 taken along the lines II-II; Figure 3 is a perspective view of one form of pour stop of the invention; Figure 4 is a cross section of the pour stop shown in Figure 3; Figure 5 is a perspective view of an alternative form of pour stop of the invention; Figure 6 is a cross section of the pour stop shown in Figure 5; Figure 7 is a cross section through yet another form of pour stop of the invention; Figure 8 is a rear view of the pour stop shown in Figure 7; Figure 9 is a perspective view of a still further pour stop of the invention;; Figure 10 is a cross section of the pour stop shown in Figure 9; Figure 11 is a perspective view of yet another pour stop of the invention; and Figure 12 is a cross section of the pour stop shown in Figure 11.
Referring to Figures 1 and 2 of the drawings, there is shown a poured concrete floor (1) in which a lift opening (2) is formed. Each side of the lift opening is lined with a pour stop (9) having a longitudinally extending slot (10) therein. As can be seen more clearly from Figure 2, each pour stop (9) is generally L-shaped and comprises an upper limb (3) and a lower L-shaped limb (4). A longitudinally extending slot (10) is formed between the upper and lower limbs (3,4) and a steel channel shaped member (5) is attached to the rear face of the pour stop (9). Anchor means (6) protrude outwardly from the rear of the channel member (5) at regular intervals along its length. A suitable channel member is that manufactured and sold by Halfen Fixing Systems Limited under their catalogue name HTA or HLS anchor channel.
Figure 2 shows corrugated sheet metal decking (8) laid on top of metal girders (7) forming the main framework of the building. The lower limb (4) of the pour stop (9) is attached to the metal decking (8) by special fixings (20). The limb 3 of the pour stop is kept in an upright position by stays (11) positioned along the length thereof. Concrete is then poured into the space behind the pour stop (9) to form the floor structure.
Once this has set, it will be appreciated that an edge will be formed around the opening (2) with a continuous slot (10) provided therein, the metal channel member (5) being securely anchored in the concrete by means of the anchoring elements (6). Thus, structural elements such as lift shaft rails (12,13) can be secured to the lift opening walls using fastening elements (14,15) anchored in the channel members (5) using, for instance, Halfen T-head bolts.
Figure 3 shows an alternative form of pour stop in which bridging straps (16) spaced along the length thereof are used to connect the upper limb member (3) to the lower limb member (4) of the pour stop. This is achieved by spot or tack welds (17). A metal channel (5) such as a Halfen HTA or HLS channel with anchor means (6) protruding therefrom is attached to the rear of the pour stop limb members (3,4) using locking plates (18) inserted in the channel member (5), each locking place being secured to a bridging strap (16) using a self-tapping screw (19).
Once the pour stop has been assembled as illustrated in Figure 3, it is placed in position on the structural girders (7) (not shown), the limb members (3,4) being retained in an upright position by means of straps (11). Concrete is then poured behind the pour stop to form the floor (1).
Figures 5 and 6 show an alternative form of pour stop in which the lower edge of the upper limb (3) has an inwardly directed lip (21) which is spot or tack welded at (23) to a side wall of the channel member (5) such as a Halfen HTA channel. The lower limb (4) has a similar inwardly extending lip (22) at its upper edge which is also spot or tack welded to the other side wall of the channel member (5). The channel member (5) has two inwardly facing lips (5a,5b) defining slot (10) therebetween and anchor means (6) of known construction protruding from the rear thereof. The illustrated pour stop would be used in much the same way as that described with reference to Figures 3 and 4. Pour stop stays (not shown) would normally be used to keep the upper and lower limbs (3,4) in an upright position during pouring of the concrete. Reinforcing bars (24) can also be positioned in the concrete.
Figures 7 and 8 show yet another construction of pour stop in which a Halfen HTA channel member (5) is attached to the rear of the upper and lower limbs (3,4) of the pour stop using bridging pieces (25) which are top hat shaped in cross section. As can be seen from Figure 7, the bridging pieces (27) are tack or spot welded at (27) to the upper and lower limbs (3,4) of the pour stop. Strengthening gussets (28) can also be provided as illustrated. Anchor means (6) extend from the rear of the channel member (5) at spaced intervals along its length and a plurality of bridging pieces (25) are positioned along the length of the pour stop between the anchor members (6) protruding therefrom.
The pour stop illustrated in Figure 7 would be used in the same way as those already described and stays (26) would be used to keep the front face (3) upright while the concrete is being poured.
Figures 9 and 10 show a still further construction of pour stop of the invention in which a Halfen HTA channel member (5) is attached to the rear of the upper and lower limbs (3,4) of the pour stop by clamping means (30) which includes a bridging portion (31), the bridging portion being shaped to make a close fit around the channel member (5). The bridging portion (31) has a pair of feet (32) extending laterally therefrom, the feet being secured to the rear face of the limbs (3,4) by one or more spot or tack welds (34).
Anchoring means (35) extend rearwardly from the bridging portion from the mid-point thereof and normal thereto. Upstanding flanges (36) are provided at the end of the anchoring means (35).
As can be seen from the drawings, each clamping means is made up from two separate halves of the same mirror image shape which are connected together by spot or tack welds (37) along the length of the anchor means (35).
It should be noted that the channel member (5) is not attached to the front limbs (3,4) but instead is held against the rear face thereof by the clamping means (30). This facilitates manufacture and it ensures that the front faces of the limbs (3,4) remain unspoilt by unsightly tack, spot or other welding. The opposite edges of bridging portion (31) however are preferably welded to the rear of the channel member at (40) to locate the channel member in a fixed position relative to the front limbs (3,4).
The pour stop shown in Figures 11 and 12 is virtually identical to that just described with reference to Figures 9 and 10 except that instead of each clamping means (30) being formed from two identically shaped parts whereby the anchoring means extends from the mid-point of the bridging portion (31), in the Figures 11 and 12 pour stop the anchoring means (35) extends coplanar with one side face (41) of the channel member (5). As a result, one of the parts of the clamping means (30) is generally L-shaped as illustrated and contacts side face (41) of the channel shaped member (5), the other part being as illustrated to fit around the rear and other side face of the channel member (5).
As with the pour stop of Figures 9 and 10, each clamping means is secured to the limbs (3,4) by spot or tack welds (34), the two halves of the clamping means being secured together by spot or tack welds (37).
However, each clamping means is secured to the channel member (5) by spot or tack welds (43). They could however be secured to the channel member by fillet welds as shown in Figures 9 and 10 and similarly, the fillet welds (40) of Figures 9 and 10 could be omitted and instead the bridging portion (31) secured to the rear of the channel member (5) by spot or tack welds.
If necessary, the junction between the bridging portions (31), the flanges (36) and the anchoring portions (35) can be strengthened by deforming these regions to include a "birds beak" pressing (not shown).
The configuration of the anchoring means need not be limited to that shown in the drawings. For instance, it is envisaged that the clamping means could be formed to include two or more anchoring members extending outwardly therefrom, the clamping means being formed by suitable folding a single piece of material to provide said anchoring stays.
As a further alternative, it is envisaged that the anchoring means could be formed from shaped wire which is attached to the bridge portion (31) and optionally pivotable relative thereto.
A still further alternative arrangement is for the anchoring members (35) to extend from the side edges of the bridging portion (31) and parallel with each other to leave a space therebetween.
The advantages of using pour stops of the present invention are as follows: 1. A fixing is provided in the pour stop without having to cut it.
2. Only one component needs to be fixed all round a well opening which is easier for the contractor's drawing office and less confusing for the concrete contractor.
3. Standard casting channel bolts such as Halfen T-head bolts can be ued which are readily available to all contractors.
4. The pour stop does not impinge on the "well zone" which may already be tight for space.
5. Facades of brick or curtain walling can be fixed to the edge of the pour stop.

Claims (15)

1. A pour stop for use in casting concrete comprising an edge barrier with a channel member extending at least partially therealong to provide an outwardly opening channel, the channel member being shaped to receive and retain holding means connected to part of other structural elements when inserted therein, the edge barrier comprising first and second limbs located on either side of the outwardly opening channel by at least one clamping means attached thereto, said clamping means including a bridging portion which locates the channel member in position relative to the first and second limbs and anchoring means extending rearwardly from the clamping means which, in use, are set into concrete poured into the space behind said edge barrier.
2. A pour stop as claimed in claim 1 wherein the clamping means holds the channel member against the rear face of the first and second limbs.
3. A pour stop as claimed in claim 1 or claim 2 wherein the anchoring means extend rearwardly from the bridging portion of the or each clamping means.
4. A pour stop as claimed in claim 3 wherein the anchoring means extend rearwardly from the channel member intermediate its side faces and normal thereto.
5. A pour stop as claimed in claim 3 wherein the anchoring means extend rearwardly from the channel member coplanar with one side face thereof.
6. A pour stop as claimed in any preceding claim wherein the or each clamping means is generally top hat shaped in cross section, the or each bridging piece being shaped to make a close-fit around the channel member and having a pair of feet extending laterally in opposite directions from the base thereof and secured to the first and second limbs on either side of the channel member.
7. A pour stop as claimed in any preceding claim wherein the or each bridging piece is secured to the channel member.
8. A pour stop as claimed in any preceding claim wherein the channel member extends along substantially the whole of the length of the pour stop.
9. A pour stop as claimed in any preceding claim wherein the first and second edge barrier limbs are generally coplanar with each other and normal to the outwardly open channel.
10. A pour stop as claimed in any preceding claim wherein the or each clamping means is formed in two parts connected together at the anchoring means.
11. A pour stop as claimed in claim 10 wherein the two clamping means parts are connected together by spot or tack welding.
12. A pour stop as claimed in claim 10 or claim 11 wherein the or each clamping means is secured to the channel member.
13. A pour stop as claimed in claim 10 or claim 11 wherein the or each clamping means is secured to the first and second edge barrier limbs.
14. A pour stop as claimed in claim 13 wherein the channel member is not secured to the first or second edge barrier parts.
15. A pour stop substantially as herein described with reference to the accompanying drawings.
GB9306746A 1992-03-31 1993-03-31 Pour stop for concrete structure Withdrawn GB2265640A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB929207064A GB9207064D0 (en) 1992-03-31 1992-03-31 Pour stop

Publications (2)

Publication Number Publication Date
GB9306746D0 GB9306746D0 (en) 1993-05-26
GB2265640A true GB2265640A (en) 1993-10-06

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Family Applications (2)

Application Number Title Priority Date Filing Date
GB929207064A Pending GB9207064D0 (en) 1992-03-31 1992-03-31 Pour stop
GB9306746A Withdrawn GB2265640A (en) 1992-03-31 1993-03-31 Pour stop for concrete structure

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB929207064A Pending GB9207064D0 (en) 1992-03-31 1992-03-31 Pour stop

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GB (2) GB9207064D0 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1148180A1 (en) * 2000-04-17 2001-10-24 Bisotherm GmbH Wall element
EP1394330A1 (en) * 2002-08-28 2004-03-03 Corus UK Limited Composite floor structures
EP1860251A1 (en) * 2006-05-24 2007-11-28 Arcelor Construction France Concrete floor of the type with with collaborative form-slabs having an opening and building kit for realizing said opening
FR2983497A1 (en) * 2011-12-01 2013-06-07 Deltisol Thermal insulating device for concrete floor in dwelling, has support comprises two side walls, where each of side walls is provided with tab, and base provided with anchoring tab that is inserted into soft interjoist material
AU2013206540B1 (en) * 2013-06-26 2014-09-11 Inhabit Studio Limited An edge-formwork element with integrated channel
AT14356U1 (en) * 2014-07-25 2015-09-15 Innovametall Stahl Und Metallbau Gmbh Base plate, especially for a balcony
EP3438361A1 (en) * 2017-08-01 2019-02-06 HILTI Aktiengesellschaft Profile rail with stiffening element
WO2019174965A1 (en) * 2018-03-12 2019-09-19 Inventio Ag Method for manufacturing a lift shaft having an elongate wall fastening arrangement integrated therein
EP3854953A1 (en) * 2020-01-27 2021-07-28 fischerwerke GmbH & Co. KG Anchor rail
US11118345B2 (en) 2017-08-01 2021-09-14 Hilti Aktiengesellschaft Structure having edge reinforcement on profiled rail
WO2023170375A1 (en) 2022-03-08 2023-09-14 MCP Group Limited Riser assembly
WO2024170878A1 (en) 2023-02-13 2024-08-22 MCP Group Limited Riser assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2243395A (en) * 1990-04-26 1991-10-30 Wincro Metal Ind Ltd Fixing of cast-in channels for facade support and restraint apparatus
GB2256211A (en) * 1991-05-25 1992-12-02 George Clark Permanent shuttering for concrete slab edge.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2243395A (en) * 1990-04-26 1991-10-30 Wincro Metal Ind Ltd Fixing of cast-in channels for facade support and restraint apparatus
GB2256211A (en) * 1991-05-25 1992-12-02 George Clark Permanent shuttering for concrete slab edge.

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1148180A1 (en) * 2000-04-17 2001-10-24 Bisotherm GmbH Wall element
EP1394330A1 (en) * 2002-08-28 2004-03-03 Corus UK Limited Composite floor structures
EP1860251A1 (en) * 2006-05-24 2007-11-28 Arcelor Construction France Concrete floor of the type with with collaborative form-slabs having an opening and building kit for realizing said opening
FR2983497A1 (en) * 2011-12-01 2013-06-07 Deltisol Thermal insulating device for concrete floor in dwelling, has support comprises two side walls, where each of side walls is provided with tab, and base provided with anchoring tab that is inserted into soft interjoist material
AU2013206540B1 (en) * 2013-06-26 2014-09-11 Inhabit Studio Limited An edge-formwork element with integrated channel
CN105637159A (en) * 2013-06-26 2016-06-01 栖息工作室有限公司 Formwork element
AT14356U1 (en) * 2014-07-25 2015-09-15 Innovametall Stahl Und Metallbau Gmbh Base plate, especially for a balcony
WO2019025232A1 (en) * 2017-08-01 2019-02-07 Hilti Aktiengesellschaft Profile rail with reinforcing element
EP3438361A1 (en) * 2017-08-01 2019-02-06 HILTI Aktiengesellschaft Profile rail with stiffening element
US11118345B2 (en) 2017-08-01 2021-09-14 Hilti Aktiengesellschaft Structure having edge reinforcement on profiled rail
US11286661B2 (en) 2017-08-01 2022-03-29 Hilti Aktiengesellschaft Profile rail with reinforcing element
US11885117B2 (en) 2017-08-01 2024-01-30 Hilti Aktiengesellschaft Structure having edge reinforcement on profiled rail
US11920341B2 (en) 2017-08-01 2024-03-05 Hilti Aktiengesellschaft Profile rail with reinforcing element
WO2019174965A1 (en) * 2018-03-12 2019-09-19 Inventio Ag Method for manufacturing a lift shaft having an elongate wall fastening arrangement integrated therein
EP3854953A1 (en) * 2020-01-27 2021-07-28 fischerwerke GmbH & Co. KG Anchor rail
WO2023170375A1 (en) 2022-03-08 2023-09-14 MCP Group Limited Riser assembly
WO2024170878A1 (en) 2023-02-13 2024-08-22 MCP Group Limited Riser assembly

Also Published As

Publication number Publication date
GB9207064D0 (en) 1992-05-13
GB9306746D0 (en) 1993-05-26

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