27 July 2020 / Safety Alert

Correct Back Propping Process

Cantilever Loading Bays

Cantilever Loading Bays

When using Preston or Hutchinson Builders’ cantilever loading bays, the following process should be followed to ensure adequate back propping is installed for your structure:

  1. A marked drawing, indicating the loading bay location, and a full set of structural designs should be sent to a structural engineer.
  2. These documents should be accompanied with the loading bay manufacturers’ design verification certificate.
  3. The structural engineer will use these documents to generate a temporary back propping solution. Click here for an example drawing.

Design Verification Certification

The back propping design certification should include the following information:

  • The maximum SWL of each loading bay
  • Manufacturer name and model number of prop to be used
  • Number of props and specific locations for installation
  • Number of floors to be back propped below the last loading bay installed

All of the above details should form part of the SWMS as the installation methodology.

If Hutchinson Builders’ personnel are not performing the installation, the site management team must ensure all of the above information is made available to those responsible.

Contact

If you need any assistance in generating the above certification, please contact:

Damian Boyce

Phone 0447 938 056

Email dboyce@hutchies.com.au

Josh Darby

Phone 0419 671 731

Email jdarby@hutchies.com.au

Other Recent Activities

View all activities
30 October / Quality Alert

Engineered stone ban effective 1 July 2024

ALL engineered stone regardless of the silica content percentage will be banned


Alternative products must be considered and implemented on all projects.

The industry is shifting away from engineered stone due to the risks of respirable crystalline silica, which can cause silicosis and other silica-related diseases. Although the consultations are under way and there has been no official announcement by Federal or State Governments on the issue, the health and safety risks along with the uncertainty around this issue warrants a decision to ban all engineered products entering job sites nationally. The ban will take effect on 1 July 2024 and will extend to ALL engineered stone regardless of the silica content percentage. 

An update to this alert will be provided before the end of the year when the Federal and State Governments are expected to issue a formal decision on the ban. In the meantime, to mitigate the impact of potential delays and variations, the best approach is to inform the clients of the pending ban and to propose and seek approval for an alternative product. Similarly, ensure all future estimates have the stone specification qualified and priced accordingly.

Product alternatives going forward include:

Compact Laminates

  • Under 1% silica content
  • Extremely competitive pricing
  • Only comes in 12mm thickness
  • Heat resistance is an issue
  • Product not suitable for high end applications

Porcelain Surfaces

  • Under 10% silica content
  • Price dependant of product and supplier
  • Large variety of colours and thicknesses (4, 8, 12, 20 and 30mm)
  • Great resistance to staining, scratches, UV and heat
  • Good warranty terms

Acrylic Solid Surfaces

  • 0% silica content
  • More expensive alternative
  • Limited thickness availability
  • UV stable and heat resistant but direct heat exposure not advised
  • Minimising wastage through flexibility in sheet sizing
  • Seamless joints

Natural Stone*

  • Various silica content percentages
  • Variety of products at different price points available
  • Ongoing maintenance may be an issue
  • Unlikely to satisfy specific warranty requirements

*Although this alert does not directly impact natural stone, some types have high silica content so risk of using these on projects should be considered carefully.

For an up-to-date list of available products and their usability, click here.


More information

If you need additional support, please contact the Quality Team:

Phone 1300 HUTCHIES
Email QualityTeam@hutchinsonbuilders.com.au

View More
10 October / Update

Make sure bin chute systems are installed correctly, following the tested systems and the manufacturers’ instructions.

Check the detailed drawings from Elephant’s Foot and Wastech for different wall types (plasterboard, shaft-liner, speed panel, concrete, Hebel, and masonry).

Any changes to the tested systems must be approved by your project certifier, signed off by the fire engineer in the fire engineering report (FER), and accepted by the relevant state / territory fire service.

View More