guide to the specification, installation and use of preservative treated ...
guide to the specification, installation and use of preservative treated ...
guide to the specification, installation and use of preservative treated ...
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Figure 1:<br />
Design Process<br />
APPLICATION<br />
Determine functional requirements for<br />
each application in <strong>the</strong> structure<br />
TARGET PERFORMANCE<br />
Specify/list required performance:<br />
Performance limit states<br />
Lifetime<br />
Level <strong>of</strong> reliability<br />
Acceptable initial versus ongoing<br />
maintenance costs<br />
HAZARD IDENTIFICATION<br />
Determine severity <strong>of</strong> exposure hazard by considering risk <strong>of</strong>:<br />
Decay, Borers, Termites, Corrosion<br />
special considerations: chemicals or o<strong>the</strong>r<br />
SELECT HAZARD LEVEL<br />
Select Hazard Level H1 – H6 for design<br />
appropriate <strong>to</strong> <strong>the</strong> biological exposure risks.<br />
PRODUCT SELECTION<br />
Select EWP based on:<br />
Product suitability:<br />
o Wood natural durability<br />
o Preservative treatment level<br />
o Glue durability<br />
Product availability<br />
Manufacturers advice/<strong>specification</strong>s/limitations<br />
STRUCTURAL DESIGN<br />
Size (design) members <strong>and</strong> connections<br />
for adequate structural performance<br />
FINISHING<br />
Select required finishing system:<br />
Paint, stain, water repellent, overlay, protective coating<br />
MAINTENANCE<br />
Define maintenance <strong>and</strong> inspection regime<br />
GUIDE TO THE SPECIFICATION, INSTALLATION<br />
AND USE OF PRESERVATIVE TREATED<br />
ENGINEERED WOOD PRODUCTS<br />
DETAILING<br />
Detailing <strong>of</strong> members <strong>and</strong> connections for:<br />
Aes<strong>the</strong>tics<br />
Sacrificial elements or extra thickness<br />
Shielding from wea<strong>the</strong>r<br />
Surface protective coatings<br />
Isolation from moisture<br />
Corrosion resistance for fasteners<br />
Drainage <strong>of</strong> trapped moisture<br />
Moisture affects on member stability<br />
Adequate ventilation<br />
Protection from marine borers<br />
Protection from insects, incl termites Ease <strong>of</strong> inspection<br />
Ease <strong>of</strong> protective coating<br />
Page | 9
Change language