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Feb 27, 2006 This module deals with the basic principles of lining with continuous pipes processes as well as their terminological definitions, limiting conditions and areas of application. |
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This lecture deals with the theoretical background to the topic of "the welding of polyethylene" as well as the practical steps and limiting conditions that have to be considered. The aim is to outline the requirements that must be met for quality assurance and the consequences of non-observance. |
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Jul 01, 2021 This module focuses on the theoretical background and the practical conditions to be observed on the subject of welding of polyethylene pipes for gas, water and wastewater pipelines. A further focus is on the requirements to be considered in quality assurance and in particular the consequences of non-compliance. After completing this module, you will have a sound knowledge of:
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Jun 22, 2023 Rehabilitation of a DN 400 concrete sewer section with “Lining with Cured-In-Place Pipes” (product name: SAERTEX-LINER® MULTI, type S+ Standard). The aim of the rehabilitation measure was the static strengthening and the restoration of the tightness of the old sewer. |
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Jun 15, 2023 Rehabilitation of a DN 400 Concrete Gravity Sewer with a SAERTEX-LINER® MULTI over a Length of 69 m The light source, hereinafter also referred to as a light chain, consists of a defined number of sections that have one or more UV lamps. The sections of the light chain have wheel sets that ensure an almost centric positioning of the UV lamps in the lining tube. In this application, each section of the light chain had one UV lamp. The entire light chain consisted of 9 sections (9 x 400/600 Watt). The UV lamps were visually inspected on-site and … |
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(Image: 117556 - Cover picture ) Process: Lining with spirally-wound pipes Title: Renovation of a DN 1200 concrete sewer using Lining with spirally-wound Place: Garden area Boundary conditions:
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The hydraulically operated winding machine used in this case is suitable for lining pipelines with diameters from DN 600 to DN 1200. Depending on the diameter to be wound, only different winding cages are used. First, the winding machine, which is disassembled into individual parts, is transported from the delivery truck to the starting manhole by means of a wheel loader with forklift attachment. It consists of a machine drive and a winding cage. … |
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To ensure that the beginning of the spirally-wound pipe is later at right angles to the pipe axis, the beginning of the T-Rib profile is sharpened (pointed) over a circumferential length (approx. 3 m (10 ft)) using an angle grinder. For this purpose, the T-Rib profile, which is delivered on a drum and secured for transport is unrolled.
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The sharpened (pointed) T-Rib profile is pulled through a guide roller attached to the boom of the wheel loader and inserted into the manhole.
Afterwards it is threaded into the winding machine, guided … |
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The annular space between the old pipe and the spirally-wound pipe is closed off by filling it with sulphate-resistant cement mortar up to 20 – 30 cm (8 – 12 in) from the manhole wall into the annular space. First, the annular space is sealed at the high point (here: target manhole). After closing the annular space and installing a ventilation nozzle at the crown (apex), the receiving wastewater is briefly interrupted (water flow control) so that … |
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The annular space is grouted in two sections starting from the low point. For this purpose, the mixing unit is positioned near the starting manhole and the filling hose is connected. With one mixing process, approx. 0.55 m3 (145 liq.gal.) of grout (Blitzdämmer®) can be produced with the mixing unit used here. The grout is mixed according to the manufacturer's instructions. For this purpose, the mixing container of the mixing unit is first filled approx. … |
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To check the success of the rehabilitation, an inspection of the rehabilitated pipe and a leak tightness test according to EN 1610 are carried out. |
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Apr 11, 2022 Lining of a DN 1200 concrete sewer with a profiled plastic profile with lock, which is wound in a spiral using a stationary winding machine, and forms a continuous pipe string after installation (SWP winding pipe method). |
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Nov 23, 2004 The Twin-Line Process is characterised in that the two resin components (polyurethane) are no longer pumped through separate lines to the spray lining machine but are filled into correspondingly large storage hoses in-situ. The lengths of the storage hoses correspond to the length of the sewer to be rehabilitated; the diameter is determined by the required quantity of polyurethane as a function of the layer thickness, pipe nominal size and mixing … |
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Nov 23, 2004 In this process group, the coating material used at present is mostly polyurethane resin and it is sprayed with the aid of special rotary spray heads onto the pipe inner wall to a thickness of 5 to 30 mm in a single working pass without wet smoothing. The work is carried out after surface preparation according to Abschnitt 5.3.1.4 from the entry manhole. Representatives of this group of processes are:
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In the spray lining process, the coating is hurled against the inner pipe wall by means of a quickly rotating centrifugal head. In the same process, when used in the water supply sector to DVGW-W 343 [DVGWAW343], the coating surface is usually smoothed by means of an accompanying device. In the sewers, smoothing is only possible if no pipe displacements are present and the pipe is of circular cross section. As these requirements are fulfilled only … |
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Coating is a generic term for one or more layers of interconnected coating materials on a base with which they are connected through adhesion. Coating processes, as used in sewers, serve the purpose of replacing or improving the resistance against physical, biological, chemical and/or bio-chemical attacks from inside, for hindering a renewed build-up of incrustation, for re-establishing and/or increasing the static bearing strength as well as the … |
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Nov 23, 2004 Basically, all materials suitable for sewage can be used for the later lining of sewers and pipes according to ATV-M 143E Part 3 [ATVM143-3]. The demands on the lining materials arise from the operating conditions. These are influenced to a great extent by the media in use as well as the planning, design and operation of the sewers [DIBt96] : Linings must be fairly impermeable against substances that can attack concrete. They must be resistant to all … |
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Nov 23, 2004 Self-supporting linings, or those capable of supporting a static load, require no anchoring or fastening in the carrier cross section. For these, a static proof (Abschnitt 5.3.2.6) is required for loading from external sources (e.g. groundwater for pressure resistant linings) [IfBt82]. If it cannot be properly clarified what the extent of the loading will be as a result of external pressure, e.g. the amount of the loading, loading on the complete pipe … |
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Nov 23, 2004 The design of the lining must be carried out in accordance with the working instructions supplied by the manufacturer, the instructions for transport, storage and working so that, when the properties of the material are taken into account, no reduction of damage occurs [DIBt96]. Linings must also properly cover the regions of the pipe joints (e.g. sockets, and spigot ends). They must not make subsequent connections impossible [Trink87]. In the following, … |
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