KRB
Registered User
Hello,
I’m new to this forum. Please allow me briefly introduce myself. I’m a retired mechanical engineer with a strong DIY skill set for home projects. 20 years ago, after a long search, I landed on the 2001 California Building Code Title 24, Part 2, Volume 2, Paragraph 1806.8.2.1 etal. I was looking for guidance on a pole I was setting. I was thrilled to finally have an equation to derive the footing depth. Over the years, I’ve worked with the equations therein but recently realized I don’t understand how to apply a particular statement in the associated Table 18-I-A (page: 2-50). The Lateral Bearing of Depth Below Grade column in this table cites Footnote 3. The first sentence in that footnote states:
“May be increased the amount of the designated value for each additional foot (305 mm) of depth to a maximum of 15 times the designated value.” In addition to what? I’m unclear about the authors intentions of how to fold that statement into the depth calculations in equations 6-1 (S1) and 6-2 (S2).
I realize this is old, obscure, there are newer versions of the CBC, and other perhaps more complete treatments of this subject. Of note, I’ve found this exact same statement in the 2022 CBC version, Paragraph 1806.3.3. So I would like to understand how to include this statement in my calculations. I would appreciate any and all help.
Thank you,
KRB
I’m new to this forum. Please allow me briefly introduce myself. I’m a retired mechanical engineer with a strong DIY skill set for home projects. 20 years ago, after a long search, I landed on the 2001 California Building Code Title 24, Part 2, Volume 2, Paragraph 1806.8.2.1 etal. I was looking for guidance on a pole I was setting. I was thrilled to finally have an equation to derive the footing depth. Over the years, I’ve worked with the equations therein but recently realized I don’t understand how to apply a particular statement in the associated Table 18-I-A (page: 2-50). The Lateral Bearing of Depth Below Grade column in this table cites Footnote 3. The first sentence in that footnote states:
“May be increased the amount of the designated value for each additional foot (305 mm) of depth to a maximum of 15 times the designated value.” In addition to what? I’m unclear about the authors intentions of how to fold that statement into the depth calculations in equations 6-1 (S1) and 6-2 (S2).
I realize this is old, obscure, there are newer versions of the CBC, and other perhaps more complete treatments of this subject. Of note, I’ve found this exact same statement in the 2022 CBC version, Paragraph 1806.3.3. So I would like to understand how to include this statement in my calculations. I would appreciate any and all help.
Thank you,
KRB