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TECHNICAL RESOURCES DHLA is well equipped to handle a variety of functions in the field. Our sampling equipment is capable of collecting relatively undisturbed soil samples in a variety of subsurface conditions, from sensitive, very soft and saturated soils, to very hard soil or soft bedrock. Specialized field locating tools allow for accurate documentation and mapping of site geologic conditions. For the purpose of observing subsurface conditions, our personnel use only OSHA-approved equipment to safely enter boreholes and excavations. DHLA possesses state-of-the-art instrumentation for the monitoring of groundwater and earth movement, including slope inclinometer and tiltmeter systems that are computer-interfaced for rapid data collection in the field, and data processing and analysis in the office. Our water level devices are capable of determining foundation deflections to within a tenth of an inch for foundation distress evaluations. Nuclear gauge instrumentation for field compaction testing is maintained in accordance with State and Federal regulations, under the supervision of a licensed radiation safety officer. Strong emphasis is placed on maintaining the best equipment and instruments in order to ensure the most efficient and accurate data collection possible. Soil Laboratory DHLA takes pride in our soil laboratory, which is outfitted with state-of-the-art equipment and managed by highly trained, qualified technicians. Our laboratory has, in fact, been contracted by many other consulting engineering firms and engineering contractors. Much of our testing equipment is automated to include test control and data acquisition by computers. Our laboratory conforms strictly to ASTM, AASHTO, and CalTrans standards, and receives annual quality assurance calibration. Our in-house and outsourced geotechnical laboratories are currently certified as approved soil testing agencies with the City of Los Angeles. A partial list of the soil and rock testing capabilities we can provide includes:
Computer Support DHLA relies heavily on computer support for instrumentation monitoring, engineering analysis, laboratory testing, and office applications. Our entire computer network has high-speed internet access, e-mail, and various state-of-the art programs. An additional notebook computer is interfaced to our slope inclinometer and tiltmeter equipment for rapid data collection in the field. A partial list of our specialty engineering programs includes:
Geotechnical and Geologic Library DHLA maintains an extensive collection of technical books and periodicals, conference proceedings, manuals, building codes, geologic maps, and aerial photos. Our geotechnical and geologic library is kept up-to-date with recent publications to complement the materials collected by our professionals over the past several decades. Research on the Internet also provides an electronic communication link to a multitude of resources beyond our own library. Our personnel are encouraged to study the materials in our library, and to continue to grow in their technical knowledge through extended learning programs. Professional Organizations DHLA is an active member of several professional organizations, including:
Our professionals are individual members of the ...
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