WAIKATO BAY OF PLENTY BRANCH TRAINING AND NETWORKING EVENT
Held on November 24th 2017, at 9:00am at, RED STAG - Waipa State Mill Rd, Whakarewarewa, Rotorua 3074
Attendance:
Ian Chamberlain, Andy Tyler, Graham Lew, Alister Arcus, Ian Mayes, Dave Thompson, Craig White, Clive Leslie, Greg Randell, Terrance Hayes, Jason Moore, Shannan Dewes, Taylor Wong, Andrew McCabe’s, Phil Saunders’, Josh Mathis, Lindsay Overlington-Knight, Mike McDean, Jeremy RanDepen, Mark Cui, Shaun McGuiness, Allan Hoffman, Busy Bester, Jim Lockitt, Israel Reid, Barry Taylor, Greg Randell, Denika Cawker, Daniel Kruger, Malcom Neil, John Needham, Jed Dodson, Trevor Quilty, Keith Ryland, Scott Tulloch, Laurie Akurangi, Dan Scheibmair.
Apologies:
Corrine Hamlin, Cory Lang, Phil Roberts, Shay Harrop, Peter Murphy, Kelvin Short, Scott Devonport, Derek Thorley, Norm Barton, Dough Langland, Jason Reece, Dan Shaw, Ben Rankin, Maxine Sefuiva, Kevin Duthie, Charlie Sefuiva, Ray Thomson, Ed Wilkins, Glenn Majoribank, Carl Lomas.
Guest Presentation:
9:15 - 11:15am
Ian Chamberlain Branch Chair introduced Our Host and New Local Branch Sponsor Manager for REDSTAG – Dave Butler who introduced his team of supporters who will be supervising the site tour through the Mill.
Dave team advised of Key requirements for members to ensure are strictly followed as part of the Tour, General site requirements, safety PPE (Some supplied by Host) Members were then placed into Small groups
Overview of site visit REDSTAG
1. Sawmill: – New $60M Tandem Quad sawmill recently installed by USNR of the USA. It is the only sawmill with this capacity, capability and technology in New Zealand or possibly the Southern Hemisphere. This plant has capacity to produce 700,000 m3 of sawn timber per annum and if running 24hrs a day can reach one million m3 per annum. It also contains a “curve saw” referred to on site as an HSS which is designed to follow the grain of the log to produce straighter, stronger timber even when the logs are not straight.
2. Kilns: - A tour of the kilns shows conventional batch kilns which dry at 140 degrees Celsius . Each of these contains about 140m3 and dries in 12 – 16 hours with a further 6 hours reconditioning. More recently Red Stag has installed 3 x large counter-flow kilns which each hold 600m3 of timber and dry at a lower temperature – 120*C which is gentler on the timber and produces a better end result. These were the first to be installed in New Zealand for structural timber. The drying time is increased to 54 hours but this includes reconditioning of the timber . The kilns are also more efficient because they convert the latent heat of the already dry timber into energy to pre-heat the incoming green timber on the other track. The energy demands are therefore much more constant than for batch kilns.
3. Planer-Mill: - This plant tests incoming timber with a hammer to produce a shock wave that determines the density and whether or not it will make the grade for structural timber. If not, boards are rejected in their rough sawn state to be made into landscaping products such as TGV retaining wall or fence rails. The boards that will make the grade are gauged to size at 450m/min then mechanically stress graded to confirm their stiffness. They then move transversely under an optical scanner which looks for visual defects before the timber is marked the appropriate grade. Timber leaving this plant is usually in the range of 14 – 18% MC. Alongside your group saw the addition to the building where a new planer is being installed capable of running about 3 times the speed of the current one – this will be up and running early 2018.
4. Boron Treatment Plant: - From the planer Mill the packets of timber move to the Boron Treatment plant where they are treated in batches of 4 packs. Each cycle takes 24 minutes where the timber is pressure infused with boron preservative which acts both as an insecticide and a fungicide to prevent insect infestation and decay. A moldicide is also added to ensure the timber retains a clear appearance in humid conditions conducive to the growth of surface mold.
5. Remanufacturing Plant: - timber that does not make structural grade still has a considerable amount of valuable fibre in the length. In the reman plant defects are removed and the timber is either cut into precision length studs for house-frames or into shook which is finger jointed together to make long lengths of strapping (ceiling batten) or lengths of clear timber used by third parties to produce mouldings.
Members reconvened back inside training room for Following Presenters:
11:15 - 12:00pm
NZ Steel Fabricators. Discussion brief around Steel Fabrication, Technical review.
Alistair Fussell – Presentation was around Lifting the Bar _ Improving the Supply of Steel Structural work. PowerPoint Presentation was well received by members. (Power point presentation available on request)
INDUSTRY CONTEXT. How is the current industry affected.
NZ market – 100-110,000 tonne
Risk Management _ Seeing Whole steel structural buildings coming in NZ.
Review sector construction methods used by members.
Benefits establishing best practice guides as follows:
• Confidence
• Ease
• Fairness
• Differentiation …
Standards testing processes…
• QA
• Education
• Workshops..
SFC Scheme: (Volunteer Scheme)
• 2014
• Aim? _ Independent market quality
• Benefits Reduces
• Focus on Fabrication
• Protective coatings
• Scheme run on code of practice.
• HERA Cert scheme process …
• ASNZS5131:2016
SFC frame work -Auditing process/ HERA SCNS BOINZ…. Board member (Bruce Symonds)
SFC FRAMEWORK -PROCESS:
• Various processes Engineers required to consider,
Highlight difference between CC2-CC3
• Material traced
• Basic
• Full
• Difference between weld and welding requirements
HOW IT WORKS
• Not Product cert..
• Note: Standard not cited.
COMPLIANCE Process supply:
• NZ Not major manufacturer – Primary Imported
• South East Asia issues with imports.. and certification assurance.
• Committee formed to address issues.
• Issues identified with old standard 1996.
• Process around developing better quality assurance of materials coming in – relevant documentation supporting materials.
• Future way forward _ NZ GUIDE FOR RESOURCING.
• Min test requirements for imports bolts to standard.
• Contact _ SCNZ www.scnz.org.
General Questions from members… well represented.
End of presentation
12:00 - 12:30pm
Craig White - Carter Holt Harvey Updates on Shadow clad. - Understanding issues related to Shadow clad installation. Craig’s’ Presentation and overview of relevant installation requirements was well received by members, he provided a systematic review with anticipated interaction from members.
REVIEW OF SHADOW CLADDING SYSTEMS
• NZBC E2AS1 requirements.
• Process for risk management – E2 Risk 4 D’s
• Approach for water management and moisture movement.
• Direct fix – alternative. (specific systems for each method)
AWARENESS INSTALLATION
• Detail crucial
• Cavity system – batten installation
• System in design as per relevant detailing for installation
• Jointing of sheeting _ Design requirements crucial.
• Note: Sheets are ship-lap design.
• Nailing critical – Site checks show installation not in line with specifications.
• Cover Battens also are critical to installation – smaller battens incorrect installation..
• Horizontal detailing _ 9mm gap requirement.
Q – Why not 10mm? All gaps are uniform _ E2AS1 says 5mm gap.. Caution re lifting for greater gap as it affects the back flashing.
Q – Priming or painting 150mm up back of sheet ??
• Detailing to base of sheets _ Min E2AS1 requirements apply _ Confirm against Check sheet (Builder should fill in at time of inspection,)
DIRECT FIX / CAVITY
• Direct fix download from site.
• Different requirements for each installation.
• Bracing only Direct fix installation only.
• New additional guides and info for flashings..
• B2 requirements _ Clause 4.5-4.6.
• Note: Cut sheets must be recoated (metalex etc.)
• Standards V specs varies coating systems – No requirements under the standards..
INSTALLATION CRITICAL ISSUES
• Incorrect installation methods still being used on site
• Always check specs.
• Website installation methods now provided.
COATINGS_Various requirements around coatings..
MAINTENANCE ISSUES
• Various areas maintenance affects _ See section on maintenance pg,43
• 15 yrs. allows for dark colours. but Not recommended. – don’t recommend linseed type coatings.
• Ian C general thanks..(copy of presentation required)
End of presentation
12:30 - 1:45pm
Andres Martinez- Cheal Engineering Consultants - Establishing Good ground to NZS3604:2011 and site Scala Penetrometer Demo. Andres’ presentation was well formatted and covered some of the background to Scala penetrometer testing, the presentation was well received. (Power point available on request)
• Good ground __ Review background _ Aussie background.
• Developed for roading… initially
• Small simple test process
• 100kpa required for each 3 blows.
• Cone point NZS4402 / 1239 similar.
• 2011 code changes… No Scala testing in TC2-3
3604: 3.1.3 ___
• Allowable bearing? ‘When All clauses a-d (e-f) are covered.
• See C33.3.2 More about soil condition not so much Scala… (see tiger)
• See nzs3604 re depth 2m below strip or 600mm below pile.
• Clause 3.4?
• Different soil types have different results. Ohakune soils e.g. option fill site concrete fill.
RAFT SOLUTION _ alternative to 3604.
• Note: 3604 Requires 5 blows.
• Consider clause 3.1.3 a-d
• How to determine soil creep? Plant growth (Reeds) Trees growing in a curve shape.
• Showed different e.g. soil types…
• EG Pumus issues with certified fill Taupo location
• Good ground depends on adverse conditions?
• Compaction _ Roller compacted. every 150-200mm layers – however some contractors use Trucks or Bobcat? Obtain engineers certification.
• Good practice can be seen from an overview of site ,, Piles of topsoil, piles of fill, well compacted platform will be evident.
SITE DEMO:
Practical Demonstration showing Scala Penetrometer test – mock record of findings… Sample Bore test…Note that the Scala penetrometer is simple method of determining the presence of Good ground combined with soil cone sample test to ascertain soil types identified. Members thoroughly enjoyed this presentation and commented that the days training was well worth attending.
End of presentations
End of Meeting
2:00pm – 2:30pm approx.
Networking and Refreshments
End of Year Branch Function Bbq - Courtesy of Branch Sponsor RED STAG.
**Refreshments kindly provided by RED STAG** (Local Branch Sponsor)
Many of the members enjoyed an array of drinks and nibbles, BBQ sausages were awesome (thanks to the chef of the day – Ian Mayes) Overall from talking with many of the members this was a well presented days training, all the presenters were well received and supported through-out their presentations many commented specifically around the presentation on determining good ground and the site demo that followed many stating that really appreciated having discussions like this that are practical and relevant.
We take this opportunity to thank our Host / Sponsor _ REDSTAG for hosting and providing catering through the day, and Site Visit to the Mill premises.
We also take this opportunity to thank all our presenters for providing their time to speak to local branch members.
Dave Thompson
Waikato Bay of Plenty Branch Secretary
office@rctok.co.nz
