1. Open Web Joists

2. Product Overview

3. What is an Open Web Joist? In Essence they are Warren Girders Manufactured from TR26 Grade Truss Timber & Steel Webs

4. Common Questions What depths do they come in?

5. Depths Strut SizeOverall DepthGap Depth PS8202mm108mm PS9N225mm131mm PS10N254mm160mm PS12302mm208mm PS14N373mm279mm PS16N421mm327mm However There are also a number of factors to consider here, like span, centres, flange width and loading conditions. Beams may also be on edge With 47mm timber on flat, there are 6 sizes of web / joist

6. Common Questions What depths do they come in? How are they made?

7. Strut Runner Joists can also be made on a normal truss press but there may be problems restraining the top edge of the timber using standard truss clamps

8. Common Questions What depths do they come in? How are they made? What width flanges to they have?

9. Flange Widths 47mm on edge 72mm - 147mm on flat Maximum 4ply on edge Maximum 2 ply on flat (Up to 294mm) On a standard run of joists you ideally want the flange width to be 72mm or 97mm on flat. Maximum recommended chords on edge are 97mm

10. Common Questions What depths do they come in? How are they made? What width flanges to they have? How do they compare in price to solid timber and I-Joists? Singly, they may be a little more expensive. However and fit quickerSpan further…They Give better access for services RESULT The overall job is cheaper

11. Benefits of Open Web Joist Access for services

12. Access for Services Note soil pipe next to the bearing

13. Access for Services

14. Benefits of Open Web Joist Access for services Larger spans than cut timber & I-Joist

15. I-Joist Span Tables 241 deep, Series 550 Joist @ Rating 45 Spans 4.3m

16. Open Web Joist Spans 254 deep PS10N Spans 5.14m – That’s 0.84m more

17. Open Web Joist Spans Based on 400mm centres and standard loads 72mm97mm122mm147mm PS 84880521054805695 PS 9N5100543056855900 PS 10N5520588061606400 PS 126330676071207410

18. Benefits of Open Web Joist Access for services Larger spans than cut timber & I-Joist Inherently stable – faster assembly, minimal bracing

19. I-Joist Bracing Requirements

20. Open Web Joist Bracing Requirements

21. Benefits of Open Web Joist Access for services Larger spans than cut timber & I-Joist Inherently stable – faster assembly, minimal bracing Light weight

22. Benefits of Open Web Joist Access for services Larger spans than cut timber & I-Joist Inherently stable – faster assembly, minimal bracing Light weight Rigid design – easier manual handling than I-Joist

23. Benefits of Open Web Joist Access for services Larger spans than cut timber & I-Joist Inherently stable – faster assembly, minimal bracing Light weight Rigid design – easier manual handling than I-Joist Squeak free – cross grain shrinkage is minimal

24. Benefits of Open Web Joist Access for services Larger spans than cut timber & I-Joist Inherently stable – faster assembly, minimal bracing Light weight Rigid design – easier manual handling than I-Joist Squeak free – cross grain shrinkage is minimal Versatility

25. Open Web Joist Versatility TRIMMABLE ENDS TOP BEARING

26. Open Web Joist Versatility

27. Trend towards Multi-Storey Dwellings

28. Open Web Joist Growth Since 1997