A client would like to add a two story addition to an existing two story wood framed home that was built in 1922. The addition will add approximately 25% to the length of the building in the longer direction. Is there a "best practices" approach for the lateral analysis of the new portion...
For flexible horizontal diaphrams (wood framing in single family residences) I have always assumed that the lateral shears transfer to the vertical shear resisting panels in proprotion to their relative stiffnes (as a function of their construction-widtn etc). Is there a "common practice" in the...
I am designing a slab on ground for a single story dimensional lumber framed residential addition. A 10x40 slab will be attached to the existing slab system with rebar dowels. The below grade geometry of the existing slab is unknown as is the reinforcing. There is no soils report for the...
For a two story wood framed home I am designing a spread footing per the soils report. The maximum P(dead)+P(live)=1500 plf. The maximum point loads at the corners of the shear walls due to lateral loads is a 1300lb couple and occur at various loations along the foundation. How do these point...
After completing the timber design of a new single family residence, I was preparing to design the foundation system. I was originally expecting a standard 97 UBC approach spread footing system. During my research I found out that the site is in an area of "moderate liquefaction" potential. I...
Contract textbooks recommend that clients retain the design engineers to execute a rigerous field observation program. They also provide indemnification language if the client chooses not to utilize such a program. What is your experience with field observation programs. Is this kind of...
