Deck Framing Connections

Last week we learned about seismic design for ceilings; the 'how to' reduce the risk of the ceiling falling in. This week was the 'how to build a safe deck'. It's all about connections! The dangers are from loose-

• posts
• railings
• attachments to an existing building

In stressing the importance of connections, Louis Daviau from Simpson Strong-Tie Company, also pointed out the reality of the building process. Often a client does not want to spend extra to have the architect or engineer make site visits during construction. That extra cost is to ensure that the builder is following the specifications and may avoid more costly corrections in the future

• Are they using an appropriate connector? Should they choose lag screws, carriage bolts, SDS screws, or bolts?
• Are they using the correct size/length for each connection?
• Are they spacing the connectors correctly?
• Are they using galvanized or stainless steel?

The DCA6 based on the 2009 International Building Code tells it all. This Residential Wood Deck Construction Guide gives all the information needed to meet code and build a safe deck. It has all the tables and schedules needed to know how to choose. No mystery!

Another strong recommendation made, when adding a desk to an existing house, if you can't see the bolts and the bolt pattern build a free standing deck!