GB940799A - Improvements in and relating to post-tensioning of concrete - Google Patents
Improvements in and relating to post-tensioning of concreteInfo
- Publication number
- GB940799A GB940799A GB1287860A GB1287860A GB940799A GB 940799 A GB940799 A GB 940799A GB 1287860 A GB1287860 A GB 1287860A GB 1287860 A GB1287860 A GB 1287860A GB 940799 A GB940799 A GB 940799A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wires
- duct
- tensioned
- threading
- whilst
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/122—Anchoring devices the tensile members are anchored by wedge-action
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
940,799. Threading and tensioning wires for post-tensioned concrete. CABLE COVERS Ltd. March 30, 1961 [April 11, 1960], No. 12878/60 Heading E1V. [Also in Division F2] In order to prevent twisting of a group of reinforcing wires or strands 20 whilst being threaded into a duct 12, the individual wires are passed through spaced guideways in a stationary member 15 at one end of the duct whilst being pulled through the duct by a device 21 to which the wires 20 are secured in spacial relationship one to another corresponding to that of the guideways, the device 21 being connected to a haulage rope 22 and constrained against axial rotation relative to the stationary member 15. The device 21 is constrained against axial rotation by the provision of a weight eccentrically mounted thereon, or by forming the device with at least one rib or with a non circular cross section for engagement respectively with a complementary formation on or of the duct 12. After threading the wires, their leading ends may be passed each through one of a number of apertures on a bearing plate 16 after which the wires are tensioned in a sequence which ensures that a wire being tensioned is not in contact with any other wire. Reference has been directed by the Comptroller to Specification 906,691.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1287860A GB940799A (en) | 1960-04-11 | 1960-04-11 | Improvements in and relating to post-tensioning of concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1287860A GB940799A (en) | 1960-04-11 | 1960-04-11 | Improvements in and relating to post-tensioning of concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB940799A true GB940799A (en) | 1963-11-06 |
Family
ID=10012800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1287860A Expired GB940799A (en) | 1960-04-11 | 1960-04-11 | Improvements in and relating to post-tensioning of concrete |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB940799A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3387417A (en) * | 1964-06-08 | 1968-06-11 | Howlett Machine Works | Prestressing apparatus |
| US3975815A (en) * | 1974-12-30 | 1976-08-24 | Nippon Concrete Industries Co. Ltd. | Method of inserting tension wires in the process of wire assembling |
| GB2122318A (en) * | 1982-06-21 | 1984-01-11 | Hubbell Inc Harvey | Grip for pulling fibre optic cable |
-
1960
- 1960-04-11 GB GB1287860A patent/GB940799A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3387417A (en) * | 1964-06-08 | 1968-06-11 | Howlett Machine Works | Prestressing apparatus |
| US3975815A (en) * | 1974-12-30 | 1976-08-24 | Nippon Concrete Industries Co. Ltd. | Method of inserting tension wires in the process of wire assembling |
| GB2122318A (en) * | 1982-06-21 | 1984-01-11 | Hubbell Inc Harvey | Grip for pulling fibre optic cable |
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