Some recommendations on arrangement of the PEX Tubing crossing of the various elements of buildings are in all-Canadan national regulations and departmental technical advice. They are distributed, usually on the design and installation of specific internal systems of a particular type of PEX tubing.
In some sets of regulations are general recommendations. For example, in the SP 40-101-96 (“Design and installation of pipelines made of PEX” or PEX-B) states. That “if the PEX tubing goes through walls and partitions shall be secured to the free movement of (plant liners and etc.). When hidden pipelining in the design of the wall or floor must be capable of temperature elongation of PEX pipe. In this case, refers to PEX pipe. In other sets of regulations are recommendations that relate to pipelines Metal PEX pipe. For example, in Section 5.7. SP 41-102-98 (“Design and installation PEX plumbing system and radiant heating with a metal-tube”) states that “for pipe penetrations through building design must include sleeves. The inner diameter of sleeve should be at 5-10 mm above the outer diameter lay PEX pipe. The gap between the pipe and sleeve should stop their soft fireproof material, permitting movement of the PEX tubing along the longitudinal axis.
In another set of rules SP 40-103-98 (“Design and installation of piping systems, hot and cold water using a metal-tube”) in paragraph 3.10 states that “to step through the building design should include wallets, made from PEX tubing. The inner diameter of sheath should be 5-10 mm larger than the outer diameter lay PEX pipe. The gap between the PEX tubing and the sheath should repair the soft waterproof material, permitting the movement of the pipe along the longitudinal axis. As we see, are virtually the same recommendations. Only a “pocket” called “shell,” and indicates the material from which it shall be made. Relatively Metal PEX pipe, there are other recommendations. Thus, in TP 78-98 (Technical recommendations for design and installation of internal plumbing of buildings of metal-tube “) in paragraph 2.20 states that” the passage of water from MIT in building construction should be carried in the pocket of metal or PEX. And it is literally in the next subsection 2.21 imposes restrictions on the material: “the intersection of overlapping water risers from MIT should be done with shells of steel tubing protruding from the ceiling to a height of not less than 50 mm. In the same document in the “Repair” (Section 5.9) states that “the weakening of sealing between the tube and sheath, passing through the constructions, it must be sealed linen streak or other soft material. Here, the question naturally arises: what kind of closing up question? There are standards that are to some extent responsible for this issue. For example, in TP 83-98 (Technical recommendations for design and installation of domestic sewage systems of buildings made of PEX pipe and fittings “) states (paragraph 4.26) that” in the field of sewer risers pass through the ceiling before burying solution risers should wrap rolled waterproofing material without a gap to allow for the dismantling truboprovodovpri repair and compensation for their temperature elongation. The “Guidelines for design and installation of domestic water supply sanitation of buildings made of PEX pipe and fittings” includes sections on both water supply and sanitation. For sewage indicated (paragraph 3.2.20) that “pass through the PEX pipe constructions should be carried out using the liners, the inner diameter of the sleeve of rigid material (steel roofing, PEX tubing, etc.) must be less than the outer diameter of PEX pipe at 10 -15 mm. Space between the tubes should be stopped a soft non-combustible material so as not to interfere with axial movement of the pipeline in its linear thermal deformations. It is also possible instead of hard liners wrap PEX tubes with two layers of roofing felt, vellum, roofing, followed by ligation of twine and other materials. The length of the sleeves should not exceed 20 mm thickness of the building structure. Regarding passage of water through the pipeline construction elements no information is given. It turns out that the intersection of pipelines made of PEX pipe with elements of buildings can be fully equipped and without the use of liners (casings). In the national paper – Building Standards CH 478-80 (“How to design and installation of water and sewerage systems of PEX tubing) – states (paragraph 3.16) that” the intersection of PEX pipe of the building foundation should be provided with a steel or PEX case. The gap between the sheath and the pipe is worked with white rope, soaked in a solution of low molecular weight polyisobutylene in benzene at a ratio of 1:3. The same type of termination should be used for all casings. In the case of application for closing the gap of tarred rope, or strands of PEX pipe should wrap the PVC or PEX film in 2-5 layers. Allowed to produce sealing asbestos material (fabric, lace) with sealing ends sheath gernitom. In the construction norms as indicated (paragraph 4.6) that “in the field of passage through constructions PEX pipe should be routed in their cases. The length of the sheath should be 30-50 mm higher than the thickness of the construction konstruktsii.Raspolozhenie joints in their cases is not allowed. Unfortunately, except for the length of its case information about the material from which to produce its case, the thickness of its walls and other characteristics are given. To replace the CH 478-80 ruleset SP 40-102-2000 (“Design and installation of pipelines for water supply and sewerage of polymeric materials”) any information about the device crossings with elements of buildings are absent. We, as one of the developers of the code, lack of recommendations on arrangement of crossings with elements of buildings explained as follows. Since in the joint venture 40-102-2000 provides general provisions, it is anticipated that specific rules are outlined in a joint venture to design and installation of specific systems (cold water PEX pipe, hot water PEX pipe, waterPEX radiant heating, sewerage, internal drains) pipeline from the specific form materials (polyethylene, crosslinked, polyvinyl chloride, polyethylene, etc.). The development of such codes of practice it would be possible to reflect the premises of buildings, as well as how and where the holes are preparing to cross the pipeline construction applications. After all the holes in the ceilings, walls and partitions can be prepared entirely on-site or have prefabrication. In SNIP 03/23/2003 (“Protection from noise”) in order to reduce the noise level is recommended to pass through pipelines overlap withPEX radiant heating sleeve with a seal gap elastic material, but unfortunately, this only applies toPEX radiant heating systems.