GB1087481A - Improved wooden beam - Google Patents

Improved wooden beam

Info

Publication number
GB1087481A
GB1087481A GB285865A GB285865A GB1087481A GB 1087481 A GB1087481 A GB 1087481A GB 285865 A GB285865 A GB 285865A GB 285865 A GB285865 A GB 285865A GB 1087481 A GB1087481 A GB 1087481A
Authority
GB
United Kingdom
Prior art keywords
high quality
wood
glued
jan
timber
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
GB285865A
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 GB1087481A publication Critical patent/GB1087481A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
    • C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
    • C07D235/04—Benzimidazoles; Hydrogenated benzimidazoles
    • C07D235/06—Benzimidazoles; Hydrogenated benzimidazoles with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached in position 2
    • C07D235/10—Radicals substituted by halogen atoms or nitro radicals
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/38—Arched girders or portal frames
    • E04C3/42—Arched girders or portal frames of wood, e.g. units for rafter roofs

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Composite Materials (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

1,087,481. Composite wooden beams. G. KAEMPF. Jan. 22. 1965 [Jan. 31, 1964], No. 2858/65. Heading E1W. Composite wooden beams are constructed with their most-stressed edges formed of timber having a greater resistance to bending stresses than the rest of the beam. As shown, an I- beam has a web 6 of three plies of spruce, glued together, and flanges 7 of Ayan wood glued thereto, the crosssectional area of the flange forming 50% of the overall cross-sectional area of the beam. In other embodiments, pine, fir. Douglas fir, stone pine or red cedar may be used for the lower quality wood, and Cowbaril, Takieng or Keruing for the high quality wood, the areal proportion of which may vary between 10 and 50% of the total area. The binding strength of the high quality wood must be over 1,000 kg./cm<SP>3</SP> and the Young's Modulus E thereof should be greater than 120,000 kg./cm<SP>2</SP>. Such beams may be strengthened at points of maximum stress by extra plies of high quality timber glued thereto, (Figs. 3 - 5, not shown), and may be I-shaped as shown or rectangular in cross-section.
GB285865A 1964-01-31 1965-01-22 Improved wooden beam Expired GB1087481A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH110764A CH424174A (en) 1964-01-31 1964-01-31 Beams made from at least two types of wood

Publications (1)

Publication Number Publication Date
GB1087481A true GB1087481A (en) 1967-10-18

Family

ID=4202647

Family Applications (1)

Application Number Title Priority Date Filing Date
GB285865A Expired GB1087481A (en) 1964-01-31 1965-01-22 Improved wooden beam

Country Status (6)

Country Link
AT (1) AT253184B (en)
BE (1) BE659031A (en)
CH (1) CH424174A (en)
DE (1) DE1484285A1 (en)
GB (1) GB1087481A (en)
NL (1) NL6501231A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2009101215B4 (en) * 2007-10-08 2010-07-01 Wesbeam Holdings Ltd Strutting Beam for use in Roofing Structure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2677692A1 (en) * 1991-06-11 1992-12-18 Gauthier Sa Paul Inexpensive beam made of wood core plywood, method of manufacture and machine for carrying out the method
US6001452A (en) * 1996-09-03 1999-12-14 Weyerhaeuser Company Engineered structural wood products

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2009101215B4 (en) * 2007-10-08 2010-07-01 Wesbeam Holdings Ltd Strutting Beam for use in Roofing Structure

Also Published As

Publication number Publication date
CH424174A (en) 1966-11-15
DE1484285A1 (en) 1969-05-29
BE659031A (en) 1965-05-17
AT253184B (en) 1967-03-28
NL6501231A (en) 1965-08-02

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