500 LAUREL DR 2016-01-01 MF Import

Geotechnical Engineering Study Page 43 UO-2267 Three Stor�r Addition - 500 Laurel 5treet, Everett January 31, 2001 N�oisture C��ntent Moisture contenttests were performed on several representative samples obtained fram the exploratory excavations. The purpose of this test is to approximately ascerfain the materials' in-situ maisture content. The infomatiori obtained assists us by providing a qualitative correlation with soil strength and cornpress'sbility. The results of these tests are included at the appropriate sample depth or the boring log. Grain Size Distribution Detailed grain size analyses were conducted on three oi ii �e retrieved samples to help determine the ovarall distribution af the soil's pa�ticles. 'rlie information gained from these analyses help to provide a detailed de .cription anci classification of the in-place materials. In tum, this information helps us to underst�,nd how the in-place materials will react to construction activity, grounclwater seeaage and foundation loading. The results are prPsented on Plates 11 iwrough '!3, Gradation Curves. Classification symbols ars also provided as part �f the appropriate indi�idual sample descriptions �n tFe boring logs. Atterberg LimEts Une test was perforrned on a representative sample of the more "fina grained" and "cohesive" soil encountere� to help determine their plasticity characteristics, and as an aid in classification of the soil. This test includes both a liquid I�mit and a plastic limit. The Plastic index, the difference between the liquid ancl plastic limits, is then detemiined. The results of the liquid limit provide a measure of the tested soils' shear strength and are analogous to the Direct Shear test. When coupled with the plastic index, the results help to classify the in-placa soil on a basis of these soil characteristics. The result of the test indicated the tested soil was "slightly plastic," and is so reported at the appropriate depths on the boring log. �