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How to achieve Min & Max Top/Bottom of Joist heights PDF
Via your preferred Timber Merchant or Hardware store or alternatively you can purchase on our Online Store
Minimum top of joist heights using ABS at lowest height of 160 mm (bottom of bearer)
390 mm – using 140mm bearers with 90mm joists on top
Maximum top of joist heights using ABS at highest height of 290 mm (bottom of bearer)
670 mm – using 290mm bearers with 90mm joists on top
Note– the above information is a “practical” rather than an “absolute” document. There will be a number of ways to achieve the heights mentioned with different sized bearers and joists, however the installer should always be mindful to operate within the KlevaKlip product parameters and relevant joist/bearer span tables.
The Adjustable Bearer Support comes in a box of 8 - Box Dimensions Length 390 mm x Width 220 x Height 165 mm - Weight 13.5 kgs
Yes, it is quite normal to use bearers that are much greater than 90mm in height (eg, 140mm, 190mm, 240mm etc ).
Yes, no problems.
Yes, no problems.
No, the products come as a pair and cannot be purchased separate from each other.
No, you must purchase these items separately from your hardware store.
We recommend galvanised12mm x 70mm dynabolts or 10mm x 70mm Masonry bolts.
Yes, it is important for your deck stability to always use two anchors for each bearer support.
Yes, it has been galvanised to Australian standard AS/NZS4680:2006
The span table below is designed to provide a load bearing capacity of 350kg per square metre when bearer supports used at the associated heights. The span table should be read in conjunction with Bearer span tables. In some instances the placing (distance between bearer supports) of the Adjustable Bearer Supports will be limited by the span capabilities of the actual bearer itself.
| Maximum Load Area(m2) | |||
| Bearer Width | Bearer Support Height (mm) | 2 Span Continuous | 3 Span Continuous |
| 70mm | 290 | 3.2 | 3.6 |
| 70mm | 230 | 4.1 | 4.7 |
| 70mm | 160 | 4.6 | 5.2 |
| 90mm | 290 | 2.2 | 2.5 |
| 90mm | 160 | 3.5 | 4.0 |
| 45-50mm** | 290 | 2.2 | 2.5 |
| 45-50mm** | 160 | 3.5 | 4.0 |
** When using 45 or 50mm bearers, in order to achieve the above load areas, the bearer must be packed out from to "L-bracket" to ensure the centre of the bearer is directly above the centre of the bearer support column.
The span table (above) will give you an indication on the minimum number of bearer supports required for your deck. However, the span table should be read in conjunction with Bearer span tables. In some instances the placing (distance between bearer supports) of the Adjustable Bearer Supports will be limited by the span capabilities of the actual bearer itself.
Note:- on a free-standing deck (ie – not attached to a fixed structure), regardless of bearers meeting span requirements, a minimum of six (6) Adjustable Bearer Supports should be used.
Whilst the span table provides information on the total number of bearer supports required for your deck, in most instances the frequency of bearer supports required along the length of your bearer will be governed by your actual bearer span tables.
Do not raise the height of the bearer support above "290mm to the bottom of bearer height". At this measurement, there is approximately 18mm of the threaded rod left in the bottom nut. Raising the height above 290mm can compromise the integrity of the product under load.
The adjustable bearer support has a supplied lowest height of approx 175mm. In order to achieve the minimum 160mm advertised height, the bottom 15-20mm of the threaded rod needs to be cut off. You can go down to 143mm by removing the locking nut and cutting approximately 40mm of the threaded rod .This does not compromise the integrity of the product as there is minumal lateral load however, it is good practise to paint the end of the treaded rod cut with metal primer.
No, this is not recommended as the pavers do not have adequate structural stability.