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ES340459A1 - A Steel Lattice Beam and a method of manufacturing the same - Google Patents

A Steel Lattice Beam and a method of manufacturing the same

Info

Publication number
ES340459A1
ES340459A1 ES340459A ES340459A ES340459A1 ES 340459 A1 ES340459 A1 ES 340459A1 ES 340459 A ES340459 A ES 340459A ES 340459 A ES340459 A ES 340459A ES 340459 A1 ES340459 A1 ES 340459A1
Authority
ES
Spain
Prior art keywords
lattice
portions
loops
strained
rod
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.)
Expired
Application number
ES340459A
Other languages
Spanish (es)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of ES340459A1 publication Critical patent/ES340459A1/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/065—Light-weight girders, e.g. with precast parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F27/00—Making wire network, i.e. wire nets
    • B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
    • B21F27/20—Making special types or portions of network by methods or means specially adapted therefor of plaster-carrying network
    • 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
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/08—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders
    • E04C3/09—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders at least partly of bent or otherwise deformed strip- or sheet-like material
    • 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
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • 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
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E04C2003/0491—Truss like structures composed of separate truss elements the truss elements being located in one single surface or in several parallel surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Wire Processing (AREA)

Abstract

In order to improve the strength of a steel lattice girder for reinforcing concrete floors, the lattice web portions 171 other than at the bottom chord or chords 111 are hardened by cold working. The girder is made by first forming equidistant spaced loops 14 in a steel rod and clamping the loops in slidable vices. The portions of the rod between the clamped loops are pressed by a wedge shaped ram to form a sinuously extending lattice 131, the vices moving towards each other a limited distance, whereupon further movement of the ram causes the portions 171 to be strained preferably by about 5%. The peak portions of the lattice 131 may also be clamped to avoid straining in these areas. The unstrained loops 141 of the lattice are finally electric resistance welded to two spaced apart bottom chord rods 111. A channel section top chord (12) (Fig. 1, not shown), may also be welded to the peaks of the lattice 131. The lattice 131 may alternatively be formed from individual components or from a rod having alternate strained and non strained portions.
ES340459A 1966-05-13 1967-05-12 A Steel Lattice Beam and a method of manufacturing the same Expired ES340459A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK0059247 1966-05-13

Publications (1)

Publication Number Publication Date
ES340459A1 true ES340459A1 (en) 1968-06-01

Family

ID=7229058

Family Applications (1)

Application Number Title Priority Date Filing Date
ES340459A Expired ES340459A1 (en) 1966-05-13 1967-05-12 A Steel Lattice Beam and a method of manufacturing the same

Country Status (4)

Country Link
AT (1) AT279864B (en)
DE (1) DE1609700C3 (en)
ES (1) ES340459A1 (en)
GB (1) GB1152554A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT400966B (en) * 1992-01-31 1996-05-28 Bucher Franz Lattice girder
AT517912B1 (en) * 2015-10-21 2019-03-15 Hubert Ing Rapperstorfer Production plant for the production of reinforcement elements

Also Published As

Publication number Publication date
DE1609700A1 (en) 1970-04-30
GB1152554A (en) 1969-05-21
DE1609700C3 (en) 1975-08-21
AT279864B (en) 1970-03-25
DE1609700B2 (en) 1975-01-16

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