Background
ASCE 7-10 Chapter 11 Seismic Design Criteria
11.1.2 Specifically excludes single family residences from the scope.
11.8.1 Specifically states that a structure assigned to Seismic Design Category E or F shall not be located where a known potential exists for an active fault to cause...
Hi,
My first boss (about 30 years ago) pointed out his observation that SPT values drop significantly in immediate proximity to the GWS only to increase again on either side. (For instance N values of 10, 5, and 12 at depths of 1, 6, and 11 (respectively) with groundwater around 6 feet)
Well...
1)Is there a fundamental difference between how seismic waves amplify through an engineered fill vs. an in-situ soil profile? i.e. 30 feet of engineered fill on bedrock vs. 30 feet of alluvium (assume similar soils).
2)If you have an engineered fill 30' thick over bedrock, does that impact...
Reading ASTM E141 it seems to me that when evaluating existing fills the standard practices of our industry are falling short. E141 indicates that location of and evaluation of the units being examined (dry density of the engineered fill) should be performed in exactly the same way as done for...
