FR2438290A1 - Plumb line positioning system for waste water pipe - uses sleeve with viewing window adjacent index point to avoid disturbing water - Google Patents

Plumb line positioning system for waste water pipe - uses sleeve with viewing window adjacent index point to avoid disturbing water

Info

Publication number
FR2438290A1
FR2438290A1 FR7828422A FR7828422A FR2438290A1 FR 2438290 A1 FR2438290 A1 FR 2438290A1 FR 7828422 A FR7828422 A FR 7828422A FR 7828422 A FR7828422 A FR 7828422A FR 2438290 A1 FR2438290 A1 FR 2438290A1
Authority
FR
France
Prior art keywords
index point
plumb line
allow
pipe
positioning system
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.)
Pending
Application number
FR7828422A
Other languages
French (fr)
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.)
SADE TRAVAUX HYDRAULIQUE
Original Assignee
SADE TRAVAUX HYDRAULIQUE
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 SADE TRAVAUX HYDRAULIQUE filed Critical SADE TRAVAUX HYDRAULIQUE
Priority to FR7828422A priority Critical patent/FR2438290A1/en
Publication of FR2438290A1 publication Critical patent/FR2438290A1/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/10—Plumb lines

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

A plumb line is lowered through an inspection chamber into a pipe in which used water flows containing various substances. The line is positioned accurately without the need for emptying or disturbing the flow to allow ground level to be checked. The base of the inspection chamber has holes to allow lower access tubes to enter the pipe. Upper access holes allow a plumb line to be suspended from a tripod to pass through a sheath supported by a bridge in the lower holes. The plumb weight is lowered to an index point fixed to a support mounted in the pipe. Sealed windows in the sheathe adjacent to the index point allow the point to be visible to verify alignment of the weight.
FR7828422A 1978-10-04 1978-10-04 Plumb line positioning system for waste water pipe - uses sleeve with viewing window adjacent index point to avoid disturbing water Pending FR2438290A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7828422A FR2438290A1 (en) 1978-10-04 1978-10-04 Plumb line positioning system for waste water pipe - uses sleeve with viewing window adjacent index point to avoid disturbing water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7828422A FR2438290A1 (en) 1978-10-04 1978-10-04 Plumb line positioning system for waste water pipe - uses sleeve with viewing window adjacent index point to avoid disturbing water

Publications (1)

Publication Number Publication Date
FR2438290A1 true FR2438290A1 (en) 1980-04-30

Family

ID=9213347

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7828422A Pending FR2438290A1 (en) 1978-10-04 1978-10-04 Plumb line positioning system for waste water pipe - uses sleeve with viewing window adjacent index point to avoid disturbing water

Country Status (1)

Country Link
FR (1) FR2438290A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990010193A1 (en) * 1989-03-01 1990-09-07 Steirische Wasserkraft- U. Elektrizitäts-Aktiengesellschaft Arrangement and process for determining movements in structures

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1952745A (en) * 1931-05-25 1934-03-27 Deasy Patrick Windproof plumb bob
FR1283551A (en) * 1961-03-10 1962-02-02 Rheinpreussen Ag Protection device
US3151402A (en) * 1961-12-29 1964-10-06 Ivan O Gelgessen Surveying apparatus for mine shafts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1952745A (en) * 1931-05-25 1934-03-27 Deasy Patrick Windproof plumb bob
FR1283551A (en) * 1961-03-10 1962-02-02 Rheinpreussen Ag Protection device
US3151402A (en) * 1961-12-29 1964-10-06 Ivan O Gelgessen Surveying apparatus for mine shafts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990010193A1 (en) * 1989-03-01 1990-09-07 Steirische Wasserkraft- U. Elektrizitäts-Aktiengesellschaft Arrangement and process for determining movements in structures

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