| Author |
Message |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 1624
Registered: 05-2003
| | Posted on Thursday, April 14, 2016 - 03:44 pm: |    |
A question from a client, my answer is that we spec soffit vents, but locations are to be indicated on the drawings per code requirements. Am I wrong? Where do my colleagues specify exterior soffit vents? |
Sheldon Wolfe
Senior Member
Username: sheldon_wolfe
Post Number: 912
Registered: 01-2003
| | Posted on Thursday, April 14, 2016 - 11:45 pm: | |
That's what drawings are for! |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 1625
Registered: 05-2003
| | Posted on Thursday, April 14, 2016 - 11:48 pm: | |
Damn Sheldon, we finally agree on something. Thanks for the response. |
Michael Chusid, RA FCSI CCS
Senior Member
Username: michael_chusid
Post Number: 133
Registered: 10-2003
| | Posted on Friday, April 15, 2016 - 01:38 pm: | |
Drawings may show distance from wall or fascia, but I see nothing wrong with letting Contractor figure out where to install along the length of the soffit in compliance with code. Specify Contractor space uniformly and submit calculations indicated required number and proposed spacing. This approach is useful if there are several vent suppliers with products that are acceptable but which have different net open area.
Michael Chusid, RA FCSI CCS
www.chusid.com www.buildingproduct.guru |
Sheldon Wolfe
Senior Member
Username: sheldon_wolfe
Post Number: 913
Registered: 01-2003
| | Posted on Saturday, April 16, 2016 - 03:50 pm: | |
Jerome, I'm fairly certain we agree on a lot more than that!  |
David J. Wyatt, CDT
Senior Member
Username: david_j_wyatt_cdt
Post Number: 134
Registered: 03-2011
| | Posted on Monday, April 18, 2016 - 08:45 am: | |
Careful, Sheldon, careful. Jerome doesn't always agree with himself! |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 1626
Registered: 05-2003
| | Posted on Monday, April 18, 2016 - 08:51 am: | |
How would you know David?
Must be a slow business day, huh David? |
David J. Wyatt, CDT
Senior Member
Username: david_j_wyatt_cdt
Post Number: 135
Registered: 03-2011
| | Posted on Monday, April 18, 2016 - 09:26 am: | |
Just kidding you a bit, Jerome. Your threads and contributions always keep me thinking. I do wonder when you have time for sleep, since you seem to always be on. |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 1627
Registered: 05-2003
| | Posted on Monday, April 18, 2016 - 09:44 am: | |
Not a good day/week for kidding around.
I sleep in 2 hour intervals, not healthy... it is what it is.
That's what it takes to run my business and take care of my daughter. I never take drugs to induce sleep, exhaustion is my sleep aid. |
David J. Wyatt, CDT
Senior Member
Username: david_j_wyatt_cdt
Post Number: 136
Registered: 03-2011
| | Posted on Monday, April 18, 2016 - 10:42 am: | |
Okay. Keep up the good work for your family. |
Anne Whitacre, FCSI CCS
Senior Member
Username: awhitacre
Post Number: 1408
Registered: 07-2002
| | Posted on Tuesday, April 19, 2016 - 08:28 pm: | |
the code requires a percentage (I think its 1/300 in this area) for soffit vents, so if you care how that gets distributed, you need to show it on the drawings. I see small linear vents around here all the time. |
Steven Bruneel, AIA, CSI-CDT, LEED-AP, EDAC
Senior Member
Username: redseca2
Post Number: 542
Registered: 12-2006
| | Posted on Tuesday, April 19, 2016 - 09:09 pm: | |
What with droughts, recent huge wildfires, and inconvenient truths, the California Building Code now includes a Chapter 7A - Materials and Construction Methods for Exterior Wildfire Exposure. This Chapter includes new requirements for soffit vents for projects located in high hazard wild fire zones as determined by maps provided on websites like this: http://www.fire.ca.gov/fire_prevention/fire_prevention_wildland_zones_maps
We had to run this down for a project where the high hazard zone literally stopped across the street from our project site.
Chapter 7A limits the size of allowable openings to between 1/16" square to 1/8" square, essentially mandating some sort of screen or mesh, which can really increase the size or number of the vents you need when you account for the percentage of openness.
7A also limits ventilation openings in the underside of an eave or cornice except for several exceptions, including a sprinklered attic or non-combustable construction. |
Michael Chusid, RA FCSI CCS
Senior Member
Username: michael_chusid
Post Number: 136
Registered: 10-2003
| | Posted on Tuesday, April 19, 2016 - 09:47 pm: | |
When using screens, OVERSIZE the vents because they will get blocked by material being drawn through the attic as it heats.
Michael Chusid, RA FCSI CCS
www.chusid.com www.buildingproduct.guru |
4specs.com Home Page