Site classification

Try AA-peak at 2900 A is connected with catalytic site Classification of tyrosyls by solvent perturbation method A-spectra show different modes of detergent-protein interaction at low and high detergent concentrations... 

For EUROAIRNET, Latvia has selected two stations in urban areas (in the capital of Latvia Riga) and two stations have been selected in rural areas. The information is submitted through the Data Exchange Module. The site classification of selected stations and the QuaUty Assurance and Quality Control (QA/QC) issues have been elucidated. The chemical analyses of manual samples are performed in LHMA s laboratory, which passed accreditation and received certification in January 1998. The calibration of DOAS OPSIS monitors is performed on a regular basis. 

Data Compilation Collect current information from all program sites regarding site classification, cost projection, and status of remediation/-closure process. 

Site Classification Sites can be characterized regarding the nature and immediacy of potential impacts using a simple site classification system based on the ASTM RBCA Site Classification system (ASTM, 1995) ... 

Principal Risk Drivers For purpose of strategic planning, site classification data may also be analyzed to identify the risk drivers of greatest importance to the total program risk score. For example, if air impacts were identified as the largest contributor to the total risk score,... 

COMe http //www.ebi.ac.uk/come Metal coordination sites, classif of bioinorganic proteins... 

Table 1 The sampling sites geographical location, site classification and major local emission sources... 

Location Latitude and longitude Site classification Local PM sources ... 

The local site effects play an important role in the evaluation of seismic hazard. The proper evaluation of the local site effects will help in evaluating the amplification factors for different locations. This article deals with the evaluation of peak ground acceleration and response spectra based on the local site effects for the study area. The seismic hazard analysis was done based on a probabilistic logic tree approach and the peak horizontal acceleration (PHA) values at the bed rock level were evaluated. Different methods of site classification have been reviewed in the present work. The surface level peak ground acceleration (PGA) values were evaluatedfor the entire study area for four different site classes based on NEHRP site classification. The uniform hazard response spectrum (UHRS) has been developed for the city of Bangalore and the details are presented in this work. 

Based on surface geology The criteria for this type of classifications are based on the geologic age of the sediments. The different site classes as per geologic site classification are given in Table 1... 

Based on geotechnical data One of the early works in site classification based on geotechnical data was done by Seed and Idriss (1982). 

The three important methods used for geotechnical site classifications are based on (i) Standard penetration test (SPT) (ii) Cone penetration test (iii) Average shear wave velocity in the top 30 m (V °). Of these, the oldest and the most widely used method of site classification is based on SPT values. There are many correlations available for evaluating different soil parameters based on the SPT values. The site classification schemes available based on the standard penetration test (SPT) values are given in Table 2. 

Table 1. Site classification based on surface geology.

Now a days the CPT test is also widely being used for the evaluation of site classification. The soil classification schemes based on CPT values are given in Table 3. 

Where is the thickness of the soil layer in metres and v. is Ihe shear wave velocity for the i layer 7 - no. of layers in the top 30 m soil strata which will be considered in evaluating Vf values. Borcherdt (1994) proposed a site classification scheme based on values and a simi-... 

Table 4. Site classification as per NEHRP scheme. (BSSC, 2001)...

A modified site classification system based on geotechnical data was proposed by Rodriguez-Marek et al. (2001). In this system the stifihess of soil was also taken into account for the site classification. The new system is presented in Table 6. 

The evaluation of surface level PGA values and response spectra is of very high importance in the engineering design. In this article an attempt has been made to critically evaluate the different methods available for the site classification and recommends the one based on The seismic... 

Field, E. H. (2000). A modified ground motion attenuation relationship for southern California that accounts for detailed site classification and a basin depth effect. Bulletin of the Seismological Society of America, 90, S209-S221. doi 10.1785/0120000507... 

Site classification using the shear wave velocity profile... 

Site classification can be carried out by different schemes based on average shear wave velocity in the upper 30 m, surface geology and geo-... 

NEHRP (BSSC, 2001) classification. Only very fied as B class site. The above site classifications... 

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