To find out more about MEGAjoist TM product & system, call our office

Or visit our web site: www.megajoist.com.au

VIC (03) 5981 4960

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INTRODUCTION Australian Building Products (ABP), founded in 2011, has a manufacturing facility strategically

positioned to service the Melbourne market. ABP is engaged in providing products to the building

industry. Strategic relationships are being developed in regional areas in order to increase the

customer base. ABP's customer base includes builders, developers and owner builders.

Principal business activities include floor joist & rafter manufacturing for residential and small to

medium commercial projects, and the development of new products for the domestic market.

MEGAjoist TM uses solid timber flanges, and intermediate timber webs that are glued together which

acts more like a timber beam than a truss, thus giving the completed floor system a more solid feel.

GENERAL NOTES

Conventional framing practice can also be applied to MEGAjoist TM installations: however, to

get maximum benefit from using the MEGAjoist TM system, builders are strongly advised to

take advantage of its unique features by adopting the following guidelines.

To meet the requirements of the Building Code of Australia (BCA), all work must comply with

AS 1684.2-1999 and where applicable with MEGAjoist TM installation guidelines.

For details not covered in this manual please contact our registered structural engineer.

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ADVANTAGES

MEGAjoist TM offer the following advantages over solid joists:

Fully Australian made

Environmentally friendly

Very easy to install

Cost effective

Foot trafficable to & bottom flanges

Penetrations that all line up allowing for easier installation of the plumbing and electrical

services

Ready-made service penetrations

Great strength and durability

Little or no lead time

Fully site dock-able

Engineer designed and certified

Strong Back bracing increases floor stiffness and reduces squeaky floor

Optional to chord support reduces on site labour

Top chord hanging

Supplied End Blocks are designed to support structural raking loads and allow for easier

installation

H3 treated pine is used for external applications such as decks

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FLOOR LOADING

MEGAjoist TM have been designed for the following Dead and Live Loads:

Dead Loads – are constant in magnitude and fixed in location throughout the life time of the

structure. Floor dead loads used for production is 0.5 kPa. (50 kg/m2)

Live Loads – are temporary loads due to furniture or people which may vary over time. Floor live

loads used for production is either 1.5 kPa (suitable for domestic floor) or 3 kPa (suitable for

commercial floor).

FACTOR THAT CAN AFFECT FLOOR PERFORMANCE

Method of installation

Fixing of sheeting to joist

Floor joist centres

FACTOR THAT CAN IMPROVE FLOOR PERFORMANCE

Deflection of the sheeting material between joists can be reduced by decreasing the joist

spacing or using a thicker and/ or stiffer floor sheeting

Proper installation is essential for reliable performance.

HANDLING AND STORAGE

MEGAjoist TM can be laid flat nested in rows, provided they are clear of ground.

MEGAjoist TM can be stacked on top of each other, and should not be left exposed to weather for

extended periods of time without adequate protection.

TRIMMING LIMITATIONS FOR MEGAjoist TM

MEGAjoist TM can be trimmed on site.

MEGAjoist TM are required to be manufactured to the required span for each project.

If adjustments to span are required for MEGAjoist TM you should contact us.

MEGAjoist TM can be trimmed at either end to leave a minimum of 90mm block remaining

on the joist end.

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SAFETY WARNING

1. The reliability and safe use of these products can be seriously impaired if they are damaged.

Do not install any damage products. Contact MEGAjoist TM on (03) 5981 4960 if any damage

is noted.

2. Permanent sheeting must be completely installed and properly glued and nailed before

additional loads can be placed on the system.

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RECOMANDATION MAXIMUM SPANS FOR RESIDENTIAL/COMERCIAL FLOORS

Note: For extra solid floor use the next joist size up from the specified size.

Note: In compiling the span tables in this manual, the requirements of the relevant Australian

standards and codes along with established industry standard design guidelines for

Residential/commercial construction have been followed. In a particular, the following codes and

references have been used:

AS 1720.1 Timber Structure – design methods

AS1170.1 Structural design actions-permanent imposed and other actions

SEVICEABILITY CRITERIA

Max Dead load deflection - lesser of span/300 or 12mm (j2 = 2)

Max Dead & Live load deflection – lesser of span/300 or 12mm

FLOOR JOISTS

(450 CTS)

RAFTERS raked

at 1○(Sheet roof)

1.5 KPa 3.0 KPa 600 CTS 900 CTS

JOIS Flanges MAX. SPAN

MAX. SPAN

MAX. SPAN

MAX. SPAN

MJ250 90 x 45 MGP10 pine 5000 4300 5400 5100

MJ280 90 x 45 MGP10 pine 5500 4700 5800 5500

MJ330 90 x 45 MGP10 pine 6000 5300 6500 6100

MJ380 90 x 45 MGP10 pine 6500 5600 7000 6500

ALL FLOOR LOADS (UPTO 3.0kPa LL)

450 CTS 600 CTS

JOIST Flanges MAX. SPAN O/HANG MAX. SPAN O/HANG

MJ250 CL 90 x 45 MGP10 pine 4300 2000 3800 1900

MJ280 CL 90 x 45 MGP10 pine 4700 2100 3900 2000

MJ330 CL 90 x 45 MGP10 pine 5300 2300 4800 2200

MJ380 CL 90 x 45 MGP10 pine 5600 2600 5200 2400

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MEGAjoist & MEGArafter

STANDARD DETAILS

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