KlevaKlip Systems Pty Ltd - About Joist Supports

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The KlevaKlip Adjustable Joist Support AJH45G (Aus/NZ) is now available in a “full kit” form – AJ45KIT – containing all your bolts, nuts and concrete fixings – making this product even easier to use. See below for all the details:

What is the KlevaKlip Adjustable Joist Support AJ45KIT & AJH45G (Aus/NZ)? AUSTRALIAN PATENT 2012261552 - United States 14/098253

Watch our Adjustable Joist Support (Aus/NZ)Install Video

Download AJ45KIT Brochure

Download AJH45G Brochure

Download Graph "How to achieve joist heights using KlevaKlip Substructure Products"

How to achieve Min & Max Top/Bottom of Joist heights PDF

The Adjustable Joist Support has been designed specifically to enable decks to easily be built over concrete slabs in areas where limited ground clearance is available. It is ideal for use when the step-down from your door to your concrete slab is between 100mm (minimum) and around 220mm (maximum). For exact heights please see our Minimum and Maximum Top of Joists Height information or "Heights achieved" grid (both listed below) using 60mm,100mm & 120mm M10 bolts and 70,90, & 140 x 45mm joists.

The AJ45KIT & AJH45G has been specifically designed to be used with 45mm wide treated pine timber joists for the Australian & New Zealand markets.

360° view Adjustable Joist Support Assembled

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Adjustable Joist Support in Action

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How is the Product Purchased?

There are now two options available when purchasing the Adjustable Joist Support- either the Adjustable Joist Kit which includes Bolts, Nuts, Washers and dynabolts or the Adjustable Joist where they are not included.

Option 1: Adjustable Joist "Kit" (AJ45KIT): Now Available

The product comes in boxes containing 16 joist supports,16 base plates, 32 x 100mm M10 hex bolts,64 x M10 hex nuts, 32 x M10 washers and 16 x 12 mm Dynabolts.

Option 2: Standard Adjustable Joist (AJH45G):

The product comes in boxes containing 24 joist supports and 24 base plates.(see photo below) Bolts, nuts, washers etc.are purchased separately from your hardware store/merchant depending on what height you want to achieve.

Each Adjustable Joist Support ( joist holder + base plate) requires 2 x M10 Hex Head Bolts, 4 x M10 Nuts & 2 X M10 washers, 1 x 12mm x 50mm Galvanised 12mm dynabolt or x 10mm x 60mm masonry bolt or similar.

Differences between Adjustable Joist "Kit" (AJ45KIT)verses Standard Adjustable Joist Support (AJH45G)?

Advantages

Easy sourcing – box contains everything you need to build your structure
Fully threaded 100mm length bolts provide maximum adjustability to cope with your required height and any irregularities in your concrete
Easy for the retailer – no special ordering or calculating of bolts etc, and no problems regarding thread length of stocked bolts

Disadvantages

All Kit bolts supplied are 100 mm length – sometimes customers require 120mm length bolts. They should purchase AJH45G and purchase the bolts,nuts etc separately.

For top of joist height below 106mm, customers may need to cut off the portion of the bolt protruding above the joist (relevant for 70mm joists)

AJ45KIT- How Packaged in box AJH45G- How Packaged in box

16 Base Plates & Joist Supports 24 Base Plates & Joist Supports

Includes: Bolts, Nuts,Washers & dynabolts Excludes: Bolts, Nuts,Washers & dynabolts or masonry bolts

Advantages of the Adjustable Joist Support

Keeps your joists off the concrete and free of unwanted moisture ingress. This Prevents Joist-Rot Through The Bottom Of Your Joists.

Is Ideal For Use On Area Where The Concrete Has Built In "Fall" - To Provide A Level Deck.

Quick and easy to use - purpose-built for the application

Gives a neat, professional look across your deck structure without resorting to various different packers and brackets to achieve your end result

Uses standard M10 10mm hex head bolts, Nuts,Washers and 12 mm dynabolts or 10 mm masonry bolts either supplied in AJKIT or purchased separately from your Hardware Store/Merchant if you are using the AJH45G.

Minimum and Maximum Top of Joist Information

Minimum top of joist heights

76 mm – fixing joist bracket direct to concrete no base-plate no bolts and using 70mm joist

86 mm – using Joist Support KIT- lowest height achievable using base-plate, 100mm bolts and joist bracket with 70mm joist

86 mm – using Adjustable Joist Support- lowest height achievable using base-plate, 60mm bolts and joist bracket with 70mm joist

106 mm – using Joist Support KIT- lowest height achievable using base-plate, 100mm bolts and joist bracket with 90mm joist

106 mm – using Adjustable Joist Support - lowest height achievable using base-plate, 60mm bolts and joist bracket with 90mm joist

Maximum top of joist heights

150 mm – using Joist Support KIT,100mm bolts & 90mm joist

170 mm – using Adjustable Joist Support, 120mm bolts & 90mm joist

180 mm – using Joist Support KIT, 100mm bolts & 120mm joist

200 mm – using Adjustable Joist Support, 120mm bolts & 120mm joist

200 mm – using Joist Support KIT, 100mm bolts & 140mm joist

220 mm – using Adjustable Joist Support, 120mm bolts & 140mm joist

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 joists, however the installer should always be mindful to operate within the KlevaKlip product parameters and relevant joist span tables

"Heights achieved" when using 100mm for AJ45KIT, 60mm & 120mm long M10 Hex Head Bolts for AJH45G Adjustable Joist Supports (Aus/NZ)?

Note: All measurements for 60mm &120mm are based on using Galvanised Zenith brand M10 hex head long-threaded bolts.

Adjustable Joist Type	Hex Head Bolt Length	Min Height to Bottom of Joist	Max Height to Bottom of Joist	Min Height to Top of 70/90mm Joist	Max Height to Top of 70/90/140mm Joist
Adjustable Joist "Kit" (AJ45KIT)	100mm	16mm	60mm	86* / 106mm	130 / 150 / 200mm
Standard Adjustable Joist (AJH45G)	60mm	16mm	20mm	86 / 106mm	90 /110
	120mm	18mm	80mm	88* / 108mm	150 /170/ 220mm
	**No Bolt	6mm		76 / 96mm

* If using long bolts at low heights, to prevent the bolts protruding past the top of joist, the end of the bolt will need to be cut off.

** When Using Joist Support Only.

Span requirements for base- plate positioning for AJ45KIT & AJH45G (Aus/NZ)

All based upon "continuous span" with joists at 450mm between centre's.

Joist Size	Recommended Span (mm)	Maximum Span (mm)
70 x 45 MGP10	800	1200
90 x 45 MGP10	1000	1500
90 x 45 MGP12	1200	1600
*120x45MGP10	1200	1800
*140x45MGP10	1200	1800

* Joist span limited by lateral loading on bolts

How to achieve Min & Max Top/Bottom of Joist heights PDF