GB863640A - Tension boom for ferro-concrete beam or girder structures - Google Patents

Tension boom for ferro-concrete beam or girder structures

Info

Publication number
GB863640A
GB863640A GB8856/57A GB885657A GB863640A GB 863640 A GB863640 A GB 863640A GB 8856/57 A GB8856/57 A GB 8856/57A GB 885657 A GB885657 A GB 885657A GB 863640 A GB863640 A GB 863640A
Authority
GB
United Kingdom
Prior art keywords
boom
concrete
casing
ferro
tension
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
GB8856/57A
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 GB863640A publication Critical patent/GB863640A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12Mounting of reinforcing inserts; Prestressing

Abstract

863,640. Girders &c. GSTOTTNER, H. March 18, 1957 [March 19, 1956], No. 8856/57. Class 20(4) In the manufacture of a tension boom for a ferro-concrete beam or girder structure, a channel shaped casing is supported as shown in Fig. 6a so as to be upwardly cambered, reinforcing means M is introduced rectilinearly and the casing is filled with concrete which is allowed to harden. The structure is such that when the boom is supported at its ends alone as in Fig. 6b it bends under its own weight sufficiently to remove the camber so that the boom is straight but the reinforcement has a curve opposite to the original camber. The upper edges B of the casing A, Figs. 1 and 2, may be bent inwards, and the reinforcing means M may consist of rods C. The concrete in the casing is also used to anchor stirrups D which may be separate as shown or formed as a continuous zig-zag. The boom may be used to support coffered ceiling slabs F, Fig. 1, concrete ribs G being formed in situ. In a lattice girder construction, Fig. 4, two channels A are connected together by stirrups D. In a self-supporting railing construction, Fig. 5, railing bars J are anchored at their ends into the concrete core of a tension boom.
GB8856/57A 1956-03-19 1957-03-18 Tension boom for ferro-concrete beam or girder structures Expired GB863640A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT863640X 1956-03-19

Publications (1)

Publication Number Publication Date
GB863640A true GB863640A (en) 1961-03-22

Family

ID=3682387

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8856/57A Expired GB863640A (en) 1956-03-19 1957-03-18 Tension boom for ferro-concrete beam or girder structures

Country Status (1)

Country Link
GB (1) GB863640A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107630409A (en) * 2017-10-26 2018-01-26 中铁第四勘察设计院集团有限公司 A kind of temporary T structure cantilever casting construction supporting construction and its manufacture method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107630409A (en) * 2017-10-26 2018-01-26 中铁第四勘察设计院集团有限公司 A kind of temporary T structure cantilever casting construction supporting construction and its manufacture method

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