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🏗️ Hollow Core Slab Floor Over Crawl Space: The Correct Method [DTU Explained] In this video, I show you how to properly install a hollow core slab floor over a crawl space, respecting DTU 20.1 and 26.1 standards. 📌 WHAT YOU WILL LEARN: ✅ How to create the perfect layout for a crawl space ✅ The differences between hollow and solid blocks (and why it matters) ✅ The importance of ventilation and drainage (common mistakes) ✅ The correct installation of joists and Isoltop polystyrene blocks ✅ How to size horizontal and vertical reinforcement bars ✅ Edge caps, T-braces, and critical support points ✅ Reinforcement cover mistakes to avoid ✅ How to properly ensure waterproofing 🎓 WHO IS IT FOR? 🔨 Professional Masons 👨‍🎓 Students in CAP Masonry and Bac Pro Structural Work programs 📚 Architects and Engineering Firms 🏗️ Home Builders 📖 MY RESOURCES: 📘 My book "Mason's Construction Log - The Fundamentals" → https://amzn.to/3wiyIvN 🏭 Isoltop Products (optimized hollow core slab floors) → https://www.isoltop.com/ 💰 SUPPORT THE CHANNEL (at no extra cost): Use this Amazon link for your purchases: → https://amzn.to/36i0M7v ⏱️ CHAPTERS (Add timestamps): 00:00 - Intro 00:45 - Principles of Vacuum Sanitary Installation 02:15 - Layout and Leveling Markers 03:45 - Choosing Hollow vs. Solid Blocks 04:30 - Ventilation and Drainage (Very Important!) 05:45 - Waterproofing Treatment 06:30 - Installation of Hollow Core Slabs 07:15 - Reinforcement and Tie Beams 08:00 - Conclusion and Advice ❓ ASK YOUR QUESTIONS: Comment if you have any questions, remarks, or your own experiences on construction sites! Feel free to send me your videos or projects as well. 📺 SUBSCRIBE: For more videos on masonry, construction, and building codes (DTU), subscribe and activate the bell 🔔 so you don't miss any new content! 🔗 YOUR OTHER REFERENCE VIDEOS: → Hollow core slab floor on upper floor [link to your other video] → Foundations and structure in detail [link if available] → Damp and capillary action treatment [link if available] #HollowCoreSlabFloor #SanitaryVideo #MasonryConstruction #DTU #ProfessionalMason #MasonryVocationalCertificate #VocationalBaccalaureate #ConstructionTutorial #Foundations #HollowCoreSlabs My booklet: The Mason's Site Logbook: The Fundamentals of Masonry https://amzn.to/3wiyIvN TO SUPPORT THE CHANNEL: For any AMAZON order, please use this link to support the channel (it won't cost you anything extra). THANK YOU https://amzn.to/36i0M7v