Appendix L NDS 2001 shows L going from the top of the flat head to the tip of the screw but L doesn't enter into the Z formulas. Table 11L, footnote 2, states "minimum screw penetration, p, into the main memeber equal to 10D". I used lm = p for my calculations.
I've done the calculations long hand and in Excel. I get the same results. I've recreated the NDS 97 table without any problems.
The example I used is #8 wood screw, D = 0.164", Table 11.3.1B D < 0.25" therefore Rd = Kd = 2.2 for D ? 0.17"
Wood is southern pine, Gm = Gs = 0.55 therefore Fem =...
My values are 15-40 percent higher then the table values. I've followed the footnotes at the bottom of Table 11L and chapter 11 of NDS 2001 as best I can tell but will go through the book again to make sure and I've run through a set of calculations by hand and used a spreadsheet to check my...
I'm trying to reporduce Table 11L from the 2001 NDS For Wood Construction. I'm using the Yield Limit Eqations found in Table 11.3.1A but can't come up with the same values listed in Table 11L. If I understand the code correctly, the minimum value obtained using the 6 formulas should be what is...
The following address list different software packages and some of the capabilities. I went to Google.com and searched for engineering software.
http://www.knowledgestorm.com/customers/search.php?taxId=1189&tax=Engineering%2C%20Construction%20and%20Scientific&st=1&nh=50&rf=3&col=ks1&type=P_A_S...
Contact your local USDA Natural Resources Conservation Service and check if they have soils maps of your area. This will give you hint as to what type of soils are in the area. They also have a Pond brochure that has some good information.
As Bill suggested, dig some test pits but don't get in...