Minutes
Waikato/Bay of Plenty
Branch Training and Networking Event
Held on
May 25th, 2018 at 9.30am
At
Redstag Timber Yard, Waipa State Mill Rodd, Whakarewarewa, Rotorua
AGENDA:
Morning Tea/Networking: 9:30- 9:45am
Attendance:
Ian Chamberlain, Dave Thompson, Pete Murphy, Terrance Hayes, Denika Cawker, Clive Leslie, Jed Dodd's, Christine Watkinson, Nick Hardy, Laurie Akurangi, Don Cowie, Alan Hoffman, Ian Lamb, Gordon Ward, Scott Tulloch.
Presenters:
• Richard Waratini Trench Pro.
• Gwyn Williamson FPS Systems, Grant Murray FPS Systems
• Steve Crossman Bowers Brothers Concrete, Rodney Cossill Bowers Brothers Concrete
• Matt Comber Aquacomb systems.
Apologies:
John Needham, Norm Barton, Daniel Kruger, Doug Langland's, Malcom Neil, Shane Beach, Alister Arcus, Ian Mayes, Phil Saunders, Cory Lang, Shaun McGuiness, Steve Hutton, Steve Higgins, Geri Sizoo, Jason Reece, Maxine Sefuiva, Gregory Hill, Jody Pickering, Daniel Shaw, Bob Tidd, Daniel Wetherill, Merv Balloch, Ian Lamb, Kelvin Short, Derek Thorley, Scott Davenport, Matt Keown.
Start: 9:45am - 10am
The event commenced with an Introduction, General Welcome and a Safety Briefing. Branch Chairperson Ian Chamberlain briefly attended the branch meeting and gave a general vote of thanks to the Branch sponsor and Host Redstag on behalf of the members.
Ian then reviewed the BOINZ Conference. Advising content in terms of where we are and where we are going. He advised the 2019 BOINZ Conference will be held in Rotorua. Ian strongly encouraged supporting these events, in terms of knowledge, sector awareness and the valuable networking opportunities as well as providing valuable information to work colleagues who were not able to make it. He advised getting the word out to other members to start preparing for attendance at the next conference.
Chairman Ian presented Branch Secretary Dave Thompson with the Ryan's Fire 'Unsung Hero Award' announced at the Dunedin Conference which was greatly appreciated and accepted by Dave Thompson. The Chairperson position was then passed to the Chair Support Terrance Hayes for the balance of the meeting
Terrance introduced our Host and Sponsor Dave Butler who discussed Housekeeping and Health Safety.
Terrance then moved onto the Branch formalities
Minutes and Matters Arising:
Confirm relevance of site visits. Tabled.
Motion to accept:
Seconder: Scott Tulloch
Correspondence In/Out:
Hot Topic: Global Fibre8/KT3 Product Members had a general discussion - concerns around their Code Mark claims and other related issues. Members can check the BOINZ Website for updates.
General Business:
Reminder to Branch Members - Training events are valuable learning experiences for Members and they should take advantage of time provided by our specialist presenters
Guest Presentation:
10:00am
Trenchmate NZ - Presentation by Richard Waratini
Who are they:
Trenchmate is an independently owned and operated business specialising in quality shoring solutions. Trenchmates sole function is to provide elite and specialised shoring equipment and assistance.
Richard talked about the History behind the current company, where they began 20 years ago and the fact they are now represented across a large part of NZ. He then discussed their Philosophy and Vision and various types of shields and different uses.
Original shields weighed around 2 Ton needing Heavy Machinery to put into place. There is need for lighter shields and various specialised customer specs (Can be designed to suit)
Sizes varied in width, depth depending on required use. Shields are supported with various widths of struts which can be interchanged to suit job specifics.
Various shield types:
o Supa shield: 15ton.
o Modular system: These are developed as required.
o Versa Box Manhole shields: These vary in heights
o Octobox: Various depths for manhole installs.
Testing MSDL - 64Kpa - SWL 36Kpa. All shields are sent to site pre-made ready. For long trenching - (EG 12m Run) would increase thickness as it increases in length and width of trench.
Panels, Extrusion type panels are made from high tensile polystyrene. Everything is NZ Made - getting further requests for lighter and lighter shields New Volcanized Rubber system (portal) is available
Live Demo:
Richard showed how the portable Panels work in practice. These panels are lightweight and easy to store and can be packed into a small vehicle and transported to any site. He demonstrated how easy they are to install, (mock demo). These panels only need 8PSI and weigh 8kgs each…They could easily support/take 100kgs (going on my own weight of course I am well, well under 100kgs)
There was then a Q&A that was well supported by Members. The Chair thanked Richard for his informative presentation and members thanked him in the usual manner.
End of 1st presentation.
10:45am Part 1
BOWERS presentation Permeable Paving:
Steve Crossland, Masonry Engineer
Steve presented on their Permeable paving systems (A mock-up of the system was visible to members which showed how the system worked in practice)
Steve has worked with Auckland Council for several years designing and installing impervious systems. Dealing with Stormwater RUNOFF. These are a SED system? - with a wrong base the system will fail. There is now a huge demand in Waikato Bay of Plenty. Any major issues can be easily dealt with using their onsite test-rig and these can be carried out in 20 minutes.
Permeable systems began with an Auckland City Council trial back in 2006, testing for permeability. Not all locations have to permeable - flow path can be directed to the location.
Applications: Parking areas. Major issues for parking areas covered in asphalt, which requiring large swales. Permeable paving is ideal in these situations, as it reduces the need for SED SW Systems which can prove very costly - in many cases Swales are required further down from the sites. Permeable paving eliminates much of the overheads and costs can also be minimal in relation to SED SW designs or swales.
AC SW Fall 120ml / ph (see paper long term permeable paving systems) Copies available. Permeable system designed to capture SW Surface catchment - capturing peak flow
Permeable paving removes the need for (at times) bulky detention tanks - all SW can be taken to permeable paving management filtering systems. Cationic exchange using greywacke base allows for Water transference back into the sea and is much cleaner. Often reused for non-potable use.
Q&A was well supported by Members. Chair thanked Steve Crossland in the usual manner.
End of 2nd Presentation.
BOWERS presentation, Retaining Walls: part 2
Michael Sorenson - Segmented Retaining wall systems:
Michael discussed the variety of retaining wall systems available, including Block systems, and Gravity walls. He talked about key differences, the effects on tiered walls and their drainage requirements. Various blocks are available and are all made to set standards, flexible designs suit EQ compliance. No mortar required for stack bond type construction.
Applications can vary up to large structures, but the majority seen will be lower wall structures.
Example - Gravity Wall Type Retaining:
Wall retaining soil - Generally engineer designed. Weight of wall itself.
Reinforces wall - add to the system to make bigger. (Geogrid system) Not tie backs but creates a reinforced mass.
Determining Soil types is critical - soil type will vary.
Difference in vertical or battered walls systems.
Maximum height restraints vary depending on design requirements.
Review MBIE guidance on loads to retaining walls? If there is a slope load will depend on mass behind wall?
Staggered wall? 2x height of wall is ok - if greater 2 separate structures.
Drainage - mass behind the wall - see zone area behind wall. Backfill cannot be saturated.
Note: Exempt work may also trigger SED design due to Load above retained areas this was evident as brought out in the presentation.
Q&A Well supported by Members. Chair thanked Michael Sorenson in the usual manner.
End of 3rd presentation.
11:30am
Frame Protection Systems Ltd - Gwyn Williamson, An Introduction to the FPS "System"
Who are they:
Frame Protection Systems Ltd Is a NZ owned and operated company, that created and developed a Codemark certified "System" called FPS® Weathertight® especially for NZ climatic conditions and building methodologies. The System consists of a TESTED range of flexible membranes, tapes, seals and fixings for both wall and roof elements.
Gwyn discussed the FPS "System", the process behind the Codemark and their FPS Check List and the benefits of a fit for purpose system. Gwyn talked through the benefits of using their system, reduced risk factors greatly minimized, product system has great support, quality check and, assurances verify workmanship.
Short and long-term building performance is assured, and warranties apply. This has considerable cost and time benefits for the whole industry.
Q&A Well supported by Members. Chair thanked Gwyn, in the usual manner.
End of 4rd presentation.
12:15 - 1:00pm: Lunch/Networking. Lunch was Kindly sponsored by RedStag
1:00 - 1:45pm
Aquacomb Systems: Andrew Olsen,
Presentation on Innovative Storm Water Systems.
Aquacomb have a very innovative storm water detention or re-use systems that collects and holds rainwater for your home. These systems can be incorporated into the Raft slab design. This unique water harvesting system comprises a series of interconnected water storage pods which are housed wholly within a concrete slab or driveways and offer soakage design systems to virtually any need type. The designs illuminate the need to on ground tanks are an invisible SW solution - which is cost effective.
The lightweight tanks eliminate the need for any on-site heavy machinery and are easy to transport and install by hand, while still being super tough and long lasting.
Andrew talked about some of the unique environments these systems are suitable for:
• Medium intensity developments creating issues for SW catchment.
• Removes need to site water tanks.
• Beneficial where either cost or inadequate installs not suitable.
Land issues currently are at a premium and saving space can make the difference of reducing huge costs and overheads on a build by implementing these systems into the slab, specifically ideal for RAFT TYPE foundations as the pods are similar in size and the polyraft system.
SED product non-structural - 2-ton Load. 1year in New Zealand. Adopted by GJ HOMES. Some initial setbacks with AC systems. BRANZ appraised system
Leakproof? 10,000 installs over 10 yrs. 3 tests prior to steel and mesh then prior to concrete poor and after pour.
The system has a proficient cleaning process as the first tank acts as a filter. Cost effective system V cost of land reclaimed or using gained space for additional build items. Benefits can be balanced against cost factor.
Target areas for the System the generally focus on Not habitable areas. Garage floors are ideal.
Q&A Well supported by Members. Chair thanked Steve Crossland in the usual manner.
End of 5th Presentation.
Dave Thompson
Waikato Bay of Plenty Branch Secretary
office@rctok.co.nz
