I appreciate that Southern Yellow Pine web site. I won't try to grade the lumber but it is one area of the framing that has the clearest boards.
As Bill says, it is a garage. If the crack returns, I'll add it to the project list.
Found a reference saying 7" blown cellulose will add around 1#...
Kerr,
I found that "2x4 I-Beam" thread. Long discussion and, after reading, one could leave with almost any original opinion intact.
You are right. They chewed that topic to death!
http://www.garagejournal.com/forum/archive/index.php/t-88914.html
Crawled all wobbly kneed, despite the pads, to the end of one of the middle joists, tapped a nail into the top, made my way to the other end and attached a second nail. Then went to the middle of the joist to discover absolutely no deflection. Took a minute to realize the string was running...
I do agree that the tables say at 19' span is the limit for 2x8s. Wonder how much safety factor is built into the tables? Of course, it's very unlikely an engineer designed the framing of the homes in this neighborhood. Presumably an architect did the drawings, a framing crew built it the way...
Hadn't thought to stretch a string to see the deflection. Obvious idea once someone points it out - thanks.
This is a corner of a completely open attic space over a 3800 sq ft home. I would say it was relatively well ventilated with five turbine vents. But it does get nice and humid during...
I've been reading the forums and believe my problem is more accurately described as a ceiling deflection rather than, as I would have formerly said, sag. I will freely admit to having little to no knowledge of framing.
Our twelve year old house has a three car attached garage. Over the years...
Thanks for the useful replies and I'm glad I asked the question. For some reason, I had decided blown cellulose did not have nearly the R rating of fiberglass batts and, seeing the thick layer of existing cellulose in the open attic, decided it would not work as well in the 7 1/4" depth between...
Thought I would go with a question rather than simply "Hi" for my first post. Seems appropriate since exploring so many helpful threads over the past few weeks is what led me to join.
Taking advantage of the Spring weather here in East Texas to air condition the 22 x 32 garage to have a year...