Schema documentation for component diggs:shortPeriodSpectralAcceleration

The mapped spectral response acceleration at short period for the reference site condition the source code defines: Ss, conventionally at 0.2 s, in IBC/ASCE 7 and codes derived from it. A mapped value before any site adjustment.

<element minOccurs="0" name="shortPeriodSpectralAcceleration" type="diggs:LinearAccelerationMeasureType"> <annotation> <documentation>The mapped spectral response acceleration at short period for the reference site condition the source code defines: Ss, conventionally at 0.2 s, in IBC/ASCE 7 and codes derived from it. A mapped value before any site adjustment.</documentation> </annotation> </element>

The mapped spectral response acceleration at the one-second period for the reference site condition the source code defines: S1 in IBC/ASCE 7 and codes derived from it. A mapped value before any site adjustment.

<element minOccurs="0" name="onePeriodSpectralAcceleration" type="diggs:LinearAccelerationMeasureType"> <annotation> <documentation>The mapped spectral response acceleration at the one-second period for the reference site condition the source code defines: S1 in IBC/ASCE 7 and codes derived from it. A mapped value before any site adjustment.</documentation> </annotation> </element>

The site classification the site coefficients were read against, as investigated: the ground as found, before any improvement. The same element name is used on diggs:RITreatedAreaType and diggs:DesignRITreatedAreaType so that one enumeration governs all three, but they state different facts about the same scale: this one is what the investigation found and the hazard lookup used, the design-side one is what the design predicts improvement will achieve, and the treated-area one is what was achieved. A project that improves the ground enough to change its class states all three and they will not agree; that is the finding, not an error. Values come from the enumerated list, or "Other: xx", where xx is a user-defined term whose meaning differs from every listed value (not a synonym of one).

<element minOccurs="0" name="seismicSiteClass" type="diggs:SeismicSiteClassEnumExtType"> <annotation> <documentation>The site classification the site coefficients were read against, as investigated: the ground as found, before any improvement. The same element name is used on diggs:RITreatedAreaType and diggs:DesignRITreatedAreaType so that one enumeration governs all three, but they state different facts about the same scale: this one is what the investigation found and the hazard lookup used, the design-side one is what the design predicts improvement will achieve, and the treated-area one is what was achieved. A project that improves the ground enough to change its class states all three and they will not agree; that is the finding, not an error. Values come from the enumerated list, or "Other: xx", where xx is a user-defined term whose meaning differs from every listed value (not a synonym of one).</documentation> </annotation> </element>

The site coefficient applied to the short-period mapped acceleration: Fa in IBC/ASCE 7 and codes derived from it. It is read from a code table as a function of the site class and the mapped value, which is why it is stated alongside both.

<element minOccurs="0" name="shortPeriodSiteCoefficient" type="diggs:DimensionlessMeasureType"> <annotation> <documentation>The site coefficient applied to the short-period mapped acceleration: Fa in IBC/ASCE 7 and codes derived from it. It is read from a code table as a function of the site class and the mapped value, which is why it is stated alongside both.</documentation> </annotation> </element>

<element minOccurs="0" name="longPeriodSiteCoefficient" type="diggs:DimensionlessMeasureType"> <annotation> <documentation>The site coefficient applied to the one-second mapped acceleration: Fv in IBC/ASCE 7 and codes derived from it.</documentation> </annotation> </element>

a_g: the design peak ground acceleration adopted as the seismic hazard premise, read from a national hazard map or a site-specific hazard study for the return period implied by the design working life and consequence class. It is not derivable from the values above and must not be synthesized from them: in ASCE 7 and the codes derived from it, a site-adjusted peak ground acceleration comes from a separately mapped peak ground acceleration and its own site coefficient, and the coefficients above apply to spectral ordinates, not to it. Where a source states spectral values but no peak ground acceleration, leave this absent. It is a diggs:LinearAccelerationMeasureType rather than a dimensionless value because peak ground acceleration is quoted as a fraction of standard gravity at least as often as in m/s2; the mandatory uom, "gn" for the former and "m/s2" for the latter, keeps 0.3 g from being read as 0.3 m/s2. A measured strong-motion record is a different thing in a different domain and is not modelled here.

<element minOccurs="0" name="peakGroundAcceleration" type="diggs:LinearAccelerationMeasureType"> <annotation> <documentation>a_g: the design peak ground acceleration adopted as the seismic hazard premise, read from a national hazard map or a site-specific hazard study for the return period implied by the design working life and consequence class. It is not derivable from the values above and must not be synthesized from them: in ASCE 7 and the codes derived from it, a site-adjusted peak ground acceleration comes from a separately mapped peak ground acceleration and its own site coefficient, and the coefficients above apply to spectral ordinates, not to it. Where a source states spectral values but no peak ground acceleration, leave this absent. It is a diggs:LinearAccelerationMeasureType rather than a dimensionless value because peak ground acceleration is quoted as a fraction of standard gravity at least as often as in m/s2; the mandatory uom, "gn" for the former and "m/s2" for the latter, keeps 0.3 g from being read as 0.3 m/s2. A measured strong-motion record is a different thing in a different domain and is not modelled here.</documentation> </annotation> </element>

The code, map or hazard study the values were taken from. Repeat where a project takes mapped values from one source and a site classification procedure from another. Where every value comes from one code but from different figures or tables within it, cite the code once here and record the per-value clauses in remark.

QName

Type

Default

Use

nilReason

gml:NilReasonType

optional

owns

boolean

false

optional

xlink:href

anyURI

optional

<element minOccurs="0" maxOccurs="unbounded" name="hazardStandard" type="diggs:SpecificationPropertyType"> <annotation> <documentation>The code, map or hazard study the values were taken from. Repeat where a project takes mapped values from one source and a site classification procedure from another. Where every value comes from one code but from different figures or tables within it, cite the code once here and record the per-value clauses in remark.</documentation> </annotation> </element>

Database handle for the object. It is of XML type ID, so is constrained to be unique in the XML document within which it occurs. An external identifier for the object in the form of a URI may be constructed using standard XML and XPointer methods. This is done by concatenating the URI for the document, a fragment separator, and the value of the id attribute.

<complexType name="SeismicHazardParametersType">
  <complexContent>
    <extension base="diggs:AbstractComponentObjectType">
      <sequence>
        <element minOccurs="0" name="shortPeriodSpectralAcceleration" type="diggs:LinearAccelerationMeasureType">
          <annotation>
            <documentation>The mapped spectral response acceleration at short period for the reference site condition the source code defines: Ss, conventionally at 0.2 s, in IBC/ASCE 7 and codes derived from it. A mapped value before any site adjustment.</documentation>
          </annotation>
        </element>
        <element minOccurs="0" name="onePeriodSpectralAcceleration" type="diggs:LinearAccelerationMeasureType">
          <annotation>
            <documentation>The mapped spectral response acceleration at the one-second period for the reference site condition the source code defines: S1 in IBC/ASCE 7 and codes derived from it. A mapped value before any site adjustment.</documentation>
          </annotation>
        </element>
        <element minOccurs="0" name="seismicSiteClass" type="diggs:SeismicSiteClassEnumExtType">
          <annotation>
            <documentation>The site classification the site coefficients were read against, as investigated: the ground as found, before any improvement. The same element name is used on diggs:RITreatedAreaType and diggs:DesignRITreatedAreaType so that one enumeration governs all three, but they state different facts about the same scale: this one is what the investigation found and the hazard lookup used, the design-side one is what the design predicts improvement will achieve, and the treated-area one is what was achieved. A project that improves the ground enough to change its class states all three and they will not agree; that is the finding, not an error. Values come from the enumerated list, or "Other: xx", where xx is a user-defined term whose meaning differs from every listed value (not a synonym of one).</documentation>
          </annotation>
        </element>
        <element minOccurs="0" name="shortPeriodSiteCoefficient" type="diggs:DimensionlessMeasureType">
          <annotation>
            <documentation>The site coefficient applied to the short-period mapped acceleration: Fa in IBC/ASCE 7 and codes derived from it. It is read from a code table as a function of the site class and the mapped value, which is why it is stated alongside both.</documentation>
          </annotation>
        </element>
        <element minOccurs="0" name="longPeriodSiteCoefficient" type="diggs:DimensionlessMeasureType">
          <annotation>
            <documentation>The site coefficient applied to the one-second mapped acceleration: Fv in IBC/ASCE 7 and codes derived from it.</documentation>
          </annotation>
        </element>
        <element minOccurs="0" name="peakGroundAcceleration" type="diggs:LinearAccelerationMeasureType">
          <annotation>
            <documentation>a_g: the design peak ground acceleration adopted as the seismic hazard premise, read from a national hazard map or a site-specific hazard study for the return period implied by the design working life and consequence class. It is not derivable from the values above and must not be synthesized from them: in ASCE 7 and the codes derived from it, a site-adjusted peak ground acceleration comes from a separately mapped peak ground acceleration and its own site coefficient, and the coefficients above apply to spectral ordinates, not to it. Where a source states spectral values but no peak ground acceleration, leave this absent. It is a diggs:LinearAccelerationMeasureType rather than a dimensionless value because peak ground acceleration is quoted as a fraction of standard gravity at least as often as in m/s2; the mandatory uom, "gn" for the former and "m/s2" for the latter, keeps 0.3 g from being read as 0.3 m/s2. A measured strong-motion record is a different thing in a different domain and is not modelled here.</documentation>
          </annotation>
        </element>
        <element minOccurs="0" maxOccurs="unbounded" name="hazardStandard" type="diggs:SpecificationPropertyType">
          <annotation>
            <documentation>The code, map or hazard study the values were taken from. Repeat where a project takes mapped values from one source and a site classification procedure from another. Where every value comes from one code but from different figures or tables within it, cite the code once here and record the per-value clauses in remark.</documentation>
          </annotation>
        </element>
      </sequence>
    </extension>
  </complexContent>
</complexType>

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