Recommendation Request RE: Hurricane Ties for Home in Central (Austin) Texas
clifbean
| Posted in Construction Techniques on
One of our potential builders, at our request, will be installing hurricane ties in our construction. Our home will be one storey with a 6×12 dutch roof in the middle of an open field. We are still making a decision as to using a shingle or galvanized metal for our roof.
Our concern is both the tropical storms from the Gulf of Mexico and tornadoes.
Their current recommendation is to use 2YP with H2.5A and/or H8.
Which hurricane ties would be best to use in our case?
Thank you in advance for all replies.
Replies
What is the 2yp?
Either of those clips can do the job, but where they are placed will impact how effective they are.
there is a huge difference between tropical storm winds and tornado
If you are serious about building a house that can stand up to a tornado, you need to skip the clips all together and change the building material.
https://disastersafehomes.com/roofs.php
2YP is #2 Grade Yellow Pine.
Thank you for your input.
you can learn about wood construction ties here:
https://www.strongtie.com/solutions/high-wind-resistant-construction/building-owners?source=footer
https://embed.widencdn.net/pdf/plus/ssttoolbox/qdm2sqxtml/F-C-HWG20.pdf
page 14 and similar have nice charts with comparison of the ratings of various clips and connectors.
Comparing the H2.5A and/or H8, shows each has higher load ratings in different directions. The H8 is higher in uplift rating, but lower in shear ratings.
H2.5a looks like it is designed to allow use in pairs, for each truss to top plate connection. this looks like what I might go with.
The best plan, if you are serious, would be an engineered solution based on specific wind speed protections. This will inform the actual choice of structural members, connectors, fasteners, location, type, and installation.
If you are directing the contractor to improve the structure from usual practice, don't stop at the rafter hurricane ties.
make sure they double up on the wall-to-foundation attachments, and use enough fasteners on all roof and wall sheathing. Products like windows and doors should be certified to meet high wind standards. roof coverings need to be specified and applied with enough of the proper fasteners to stay put.
Florida has building codes that are improved to include wind protection.
https://codes.iccsafe.org/codes/florida