Waterstops and Joint Sealing in Water-Retaining Structures

This seminar explains how joints in tanks, reservoirs and basements are loaded by water pressure and movement, compares the main waterstop and joint-sealing technologies, sets out the site detailing that makes them work, and covers tightness testing, inspection and remedial injection.

Learning objectives

1. Identify the joints in water-retaining and below-ground structures and the water pressure and movement each must resist
2. Compare PVC and elastomeric waterstops, hydrophilic swelling seals, injection hoses and external joint tapes
3. Detail waterstop placement, splicing, fixing and concrete compaction at construction and movement joints
4. Specify testing, inspection and remedial injection for joints in tanks, reservoirs and basements

Modules0 of 5 done

1

Joints, pressure and movementWhere water-retaining structures leak, and what each joint has to resist · About 8 min · 7 min video

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2

Waterstop profiles and materialsCentre and external waterstops in PVC, thermoplastic elastomer and rubber · About 8 min · 5 min video

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3

Swelling seals, hoses and tapesHydrophilic strips, re-injectable hoses and external joint tapes · About 8 min · 4 min video

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4

Detailing and installationPlacement, splicing, fixing, compaction and sealants on site · About 8 min · 4 min video

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5

Testing, inspection and repairTightness testing, hold-point inspection and remedial injection · About 13 min · 6 min video

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Assessment10 questions · pass mark 80% · 2 attempts