In 1974, we (WRPI) have a temporary task-oriented laboratory and perform investigations and experiments for public construction, afterward the laboratory officially found in 1977.
Until 1991, due to business growth, it was divided into the Geotechnical Engineering Laboratory and provided the quality control testing for the domestic significant water resources, river coast, irrigation, and drainage surveys. In 2006, the Water Resources Agency instructed the Water Resources Planning Institute (WRPI) to seek for specialized accreditation to advance the earthwork inspection and testing for the Hushan Reservoir project and cooperate with the follow-up domestic public infrastructure.
Therefore, the Geotechnical Engineering Laboratory got accreditation from Taiwan Accreditation Foundation (TAF) (shown in Figure 1) and established the "Hushan Reservoir on-site Laboratory." In 2015, we provided service for the dike of the Jhongjhung Artificial Lake Project, and set the " Jhongjhung Artificial Lake on-site Laboratory." The Naio-Zuei-Tan Artificial Lake Quality Inspection Program is the main task now.
At present, there are 16 approved earthwork tests (shown in Table 1), and other certificated tests will include depending on the project requirement. At the current stage, we only perform the testing service within the commissioned tasks of the Water Resources Agency.
Figure.1 Geo-technical Engineering Laboratory of Certificate of Accreditation
Table 1: Geotechnical Engineering Laboratory Accredited Test and Standards/Accreditation Criteria
| Accredited Test |
Accredited Standards/ Criteria |
| Laboratory Determination of Water (Moisture) Content |
▲ASTM D2216-10
▲USBR 5300-89
▲CNS 5091 (1986) |
| Standard Test Methods for Specific Gravity of Soil |
▲ASTM D854-14
▲USBR 5320-89 A
▲CNS 5090 (1988) |
| Standard Test Methods for Determining the Amount of Material Finer than 75-μm (No. 200) Sieve in Soils by Washing |
▲ASTM D1140-14
▲CNS 5264 (1986)
▲USBR 5335-89 |
| Standard Test Methods for Liquid Limit, Plastic Limit and Plasticity Index of Soils |
▲ASTM D4318-10e1
▲USBR 5360-89、5355-89
▲CNS 5088 (2010) |
| Standard Test Method for Materials finer than 75-um (No. 200) Sieve in Mineral Aggregates by Washing |
▲ASTM C117-13
▲CNS 491 (2001)
▲USBR 4117-92 |
| Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates |
▲ASTM C136-06
▲USBR 4136-92
▲CNS 486 (2001) |
| Standard Test Method for Particle-Size Analysis of Soils |
▲ASTM D422-63(2007)e2
▲USBR 5330-89
▲CNS 11776 (2011) |
| Standard Practice for Classification of Soils for Engineering Purposes |
▲ASTM D2487-11
▲USBR 5000-86
▲CNS 12387 (1988) |
| Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Coarse Aggregate |
▲ASTM C127-12
▲USBR 5320-89 C
▲CNS 488 (2008) |
| Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Fine Aggregate |
▲ASTM C128-12
▲CNS 487 (2013) |
| Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine |
▲ASTM C131-14
▲ASTM C535-12
▲CNS 490(2009)
▲CNS 3408(1985) |
| Standard Test Methods for Minimum Index Density and Unit Weight of Soils and Calculation of Relative Density |
▲ASTM D4253-00(2006)e1
▲ASTM D4254-00(2006)e1
▲USBR 5525-89、5530-89 |
| Standard Test Method for Density and Unit Weight of Soil in Place by the Sand-Cone Method |
▲ASTM D1556-07
▲ASTM D4718-87
▲CNS 14733 (2005)
▲CNS 14732 (2005)
▲USBR 7205-89
▲USBR 7221-89
▲ASTM D5030-13a |
| Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort |
▲ASTM D698-12e1
▲ASTM D1557-12
▲USBR 5500-89
▲CNS 11777 (2005)
▲CNS 11777-1 (2005) |
| Standard Test Method for Rapid Determination of Percent Compaction |
▲ASTM D5080-08
▲USBR 7240-89 |