DWG Drawing Resources Penetron CAD Drawings (Archive of DWG’s) PDF Drawing Resources Waterproofing an underground structure under construction Waterproofing an existing underground structure Model (1) Unit 7. Structure under construction. Waterproofing of communication inlets Unit 6. Waterproofing of static in cast-in-situ structure under construction Unit 5. Existing structure. Active leaks removal Unit 4. Existing structure and structure under construction. Waterproofing of formwork holes Unit 3. Existing structure. Active leaks removal Unit 2. Existing structure. Waterproofing of static joints and cracks Unit 1. Existing structure. Waterproofing of static joints Structure under construction. Pre-cast concrete structure waterproofing Existing structure. Masonry waterproofing (2) Existing structure. Pre-cast concrete structure waterproofing Existing structure. Masonry waterproofing