Foundations

785 topics in this forum

1. Pile and Groundbeam Design

   By carson321, January 19
   • 6 replies
   • 401 views
   • 
   • saveasteading
   • January 21

2. foundation Dropped floor level for headroom in garden gym – good practice?

   By seanious, January 5   

   • footings
   • garden room
   • (and 2 more)

     Tagged with:

     • footings
     • garden room
     • workshop
     • dropped floor
   • 2 replies
   • 271 views
   • 
   • seanious
   • January 6

3. Different finished floor level between attached garage and house. Footing detail?

   By flanagaj, December 31, 2025
   • 12 replies
   • 352 views
   • 
   • Russdl
   • January 1

4. Mains water, DPM and trench in garage

   By Jammy5, December 28, 2025
   • 16 replies
   • 441 views
   • 
   • Jammy5
   • December 29, 2025

5. Cavity fill lean mix and telescopic air ducts.

   By epsilonGreedy, July 18, 2018
   • 22 replies
   • 8.3k views
   • 
   • dave71
   • November 7, 2025

6. Raft foundation advice

   By Saints1, November 3, 2025
   • 7 replies
   • 793 views
   • 
   • Gus Potter
   • November 4, 2025

7. Foundation Issues (trench collapse, piling options)

   By carson321, October 24, 2025
   • 2 replies
   • 713 views
   • 
   • saveasteading
   • October 24, 2025

8. Foul drains through concrete footing?

   By BenGillyHills, October 22, 2025   

   • foul drain
   • foundations
   • 11 replies
   • 803 views
   • 
   • BenGillyHills
   • October 23, 2025

9. Leaking dpm under slab - is it an issue?

   By Dunc, October 4, 2025
   • 6 replies
   • 833 views
   • 
   • Nickfromwales
   • October 4, 2025

10. Helical piles instead of relaying garage foundations?

    By SilverShadow, September 26, 2025
    • 10 replies
    • 1.2k views
    • 
    • ToughButterCup
    • October 1, 2025

11. Trench fill acceptable tolerance in level and dip

    By Stu84, September 12, 2025
    • 19 replies
    • 1.8k views
    • 
    • Stu84
    • October 1, 2025

12. Foundations & Drains 1 2

    By Spinny, September 18, 2025
    • 32 replies
    • 2.2k views
    • 
    • Spinny
    • September 30, 2025

13. Garden gravel as hardcore substitute?

    By YodhrinForge, September 25, 2025
    • 2 replies
    • 911 views
    • 
    • YodhrinForge
    • September 27, 2025

14. Backfilling under lintel above drain pipe

    By John2000, September 21, 2025
    • 4 replies
    • 1.1k views
    • 
    • John2000
    • September 22, 2025

15. Cutting up my raft foundation

    By Gone West, September 20, 2025
    • 5 replies
    • 1k views
    • 
    • Gone West
    • September 21, 2025

16. RC slab and waste drainage

    By LSB, September 20, 2025
    • 2 replies
    • 711 views
    • 
    • torre
    • September 20, 2025

17. Shutter Foundations at Boundary ?

    By Spinny, September 17, 2025
    • 2 replies
    • 761 views
    • 
    • Spinny
    • September 17, 2025

18. Step in foundations, flatness of bottom of foundation, sleeving

    By Stu84, September 9, 2025
    • 2 replies
    • 1k views
    • 
    • Stu84
    • September 12, 2025

19. Can I use this to level ground under workshop slab

    By Owain1602, September 11, 2025
    • 1 reply
    • 888 views
    • 
    • Mike
    • September 11, 2025

20. Running underground drainage through below dpc wall

    By Sunil237, September 8, 2025
    • 3 replies
    • 842 views
    • 
    • Sunil237
    • September 9, 2025

21. Insulated Raft - How much better?

    By dsaunders, July 18, 2025
    • 12 replies
    • 1.5k views
    • 
    • Rosslyn
    • September 4, 2025

22. Foundations for garden retaining wall

    By paul1966, August 31, 2025
    • 1 reply
    • 862 views
    • 
    • cwr
    • September 1, 2025

23. Raft foundation expansion/movement joint

    By Selexus, August 5, 2025
    • 17 replies
    • 1.8k views
    • 
    • -rick-
    • August 13, 2025

24. Pile Foundation Cost

    By Saul, June 6, 2021
    • 19 replies
    • 18.2k views
    • 
    • Lincolnshire Ian
    • August 4, 2025

25. Rod System

    By MortarThePoint, July 30, 2025
    • 5 replies
    • 1.3k views
    • 
    • MortarThePoint
    • July 31, 2025