Rehabilitation and Maintenance of Drains and Sewers / Publisher: Prof. Dr.-Ing. D. Stein & Partner GmbH, Editorial: D. Stein, R. Stein (2004)

ATV-M 143 Part 5

The ATV-M 143 Part 5 [ATVM143-5a] has the aim that all tenderers understand the contract requirements when applied to the relining process according to ATV-M 143E Part 3 [ATVM143-3] unambiguously, that they can calculate their prices with safety and that they can avoid differences in competitiveness. This specification pamphlet can also be used as a base for other rehabilitation processes for repair of damage until other process-specific specifications become available.

As at present there are no generally accepted rules of technology in the shape of standards, guides for negotiation, etc., for relining processes, which have been defined, the instructing party should establish a requirement profile that, for instance, contains the following requirements or assumptions of the instructing party or queries of the tenderer:

  • General (references, environmental friendliness, ability to complete the work in groundwater, disposal of waste);
  • Preparatory work;
  • Material for prefabricated and non-prefabricated products;
  • Material properties;
  • Structural proof;
  • Installation and processing.

(Table 5.6.4.3.5.2-1) reproduces the minimum positions, which, according to [ATVM143-5a],"are to be carefully, project-specific and comprehensively formulated in the proposal request." Additional positions can be necessary for individual cases.

Table 5.6.4.3.5.2-1: 

Specification positions for lining processes in accordance with ATV-M 143 Part 5 [ATVM143-5a]

Specification
positions
Proposed
unit
Long pipe and
continuous pipe
process
Short
pipe
lining
Close−Fit lining
with pipes1)
Cured−in−place
lining 2)
Spiral
lining
Arranging and clearing
up
Flat rate x x x x x
Traffic deviation Flat rate x x x x x
Sewer cleaning Flat rate; m x x x x x
Sewer inspection Flat rate; m x x x x x
Removal of obstacles Piece;
hour
x x x x x
Calibration Flat rate; m x x x x x
Blockage in sewer Flat rate; m x x x x x
Blockage for side inlets Piece x x x x x
Install. or pull−in
excavation
Piece x N⁄A N⁄A N⁄A N⁄A
Rehabilitation of badly
connected side inlets
Piece x x x x x
Structural calculation
for liner
Flat rate x x x x x
Supply and install liner m x x x x x
Connect side inlets by
open cut method
Piece x x x x x
Connect side inlets by
trenchless method
Piece x x x x x
Seal annular space Piece x x N⁄A N⁄A x
Grout annular space m x x N⁄A N⁄A x
Connect to manhole Piece x x x x x
Adapt to manhole
channel
Piece x x x x x
Test for leaktightness Flat rate; m x x x x x
TV acceptance m x x x x x
Deformation measuring
of installed liner
Flat rate; m x x x x x
Materials testing liner
after installation
Flat rate N⁄A N⁄A N⁄A x N⁄A
Work according to
effort
Hour x x x x x
1) Close−Fit lining without annular space
2) Anchor hose lining process analogous to spiral lining

In addition, the specification sheet must define the type and extent of the quality assurance. According to [ATVM143-5a], it should be a special requirement that:

  • The tenderer gives proof of the suitability of his rehabilitation process taking the quoted requirements into account;
  • The tenderer ensures the quality within the scope of his own and third party supervision;
  • Sample pieces are taken in-situ from the installed piping if the liner only achieves its final shape after hardening on site after installation;
  • The tenderer must have the promised properties confirmed by a recognised testing institute.

Rehabilitation and Maintenance of Drains and Sewers / Publisher: Prof. Dr.-Ing. D. Stein & Partner GmbH, Editorial: D. Stein, R. Stein (2004)