Installation info

Installation info

Adjustable Bearer Support Installation Video

Adjustable Bearer Support Installation Information

 

Adjustable Bearer Supports should always be fixed with 2 x 12mm x 70mm Galvanised dynabolts or 2 x 10mm x 70mm Masonry bolt or similar to ensure strength and stability of base.

Base plates are recommended to be placed at 90 degrees to the adjacent base plate to provide best possible lateral stability in all directions. This is critically important if building a free-standing deck (ie - not attached to any fixed structure – eg house).

Locking nuts should be fully tightened at all times. This is especially important when the thread is wound out near its maximum height.

Do not wind the Adjustable Bearer Support higher than 290mm to the bottom of bearer height.

Span Table – to 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  3.2  3.6
 45-50mm **  160  4.6  5.2
** 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.

 

 

          TOP OF BEARER HEIGHT

Adjustable Bearer

Support Set Height mm 

 

90mm

Bearer

Height

140mm

Bearer

Height

190mm

Bearer

Height

240mm

Bearer

Height
160 250 300 350 400
200 290 340 390 440
230 320 370 420 470
260 350 400 450 500
290 380 430 480 530

 

Note: The height to the top of your Joist will depend on whether your joists are “hung” inside the bearer (in which case top of joist height usually equals top of bearer height), or whether your joists are fixed to the top of your bearers (in which case the height of your joist should be added to the top of bearer height to achieve top-of-joist/bottom-of-deck height).

For your convenience, below is a span table for joists and bearers which should be cross referenced with the Adjustable Bearer Support span table above.

 Joists & Bearers Span Table