SetIBC2006 {Auto Seismic}

SetIBC2006

Syntax

SapObject.SapModel.LoadPatterns.AutoSeismic.SetIBC2006

VB6 Procedure

Function SetIBC2006(ByVal Name As String, ByVal DirFlag As Long, ByVal Eccen As Double, ByVal PeriodFlag As Long, ByVal IBC2006CtType As Long, ByVal UserT As Double, ByVal UserZ As Boolean, ByVal TopZ As Double, ByVal BottomZ As Double, ByVal IBC2006R As Double, ByVal IBC2006Omega As Double, ByVal IBC2006Cd As Double, ByVal IBC2006I As Double, ByVal IBC2006Option As Long, ByVal IBC2006Latitude As Double, ByVal IBC2006Longitude As Double, ByVal IBC2006ZipCode As String, ByVal IBC2006SS As Double, ByVal IBC2006S1 As Double, ByVal IBC2006TL As Double, ByVal IBC2006SiteClass As Long, ByVal IBC2006Fa As Double, ByVal IBC2006Fv As Double) As Long

Parameters

Name

The name of an existing Quake-type load pattern.

DirFlag

This is either 1 or 2, indicating the seismic load direction.

1 = Global X

2 = Global Y

Eccen

The eccentricity ratio that applies to all diaphragms.

PeriodFlag

This is 1, 2 or 3, indicating the time period option.

1 = Approximate

2 = Program calculated

3 = User defined

IBC2006CtType

This is 0, 1, 2 or 3, indicating the values of Ct and x. This item applies when the PeriodFlag item is 1 or 2.

0 = Ct = 0.028 (ft),x = 0.8

1 = Ct = 0.016 (ft),x = 0.9

2 = Ct = 0.03 (ft),x = 0.75

3 = Ct = 0.02 (ft),x = 0.75

UserT

The user specified time period. This item applies when the PeriodFlag item is 3. [s]

UserZ

This item is True if the top and bottom elevations of the seismic load are user specified. It is False if the elevations are determined by the program.

TopZ

This item applies only when the UserZ item is True. It is the global Z-coordinate at the highest level where auto seismic loads are applied. [L]

BottomZ

This item applies only when the UserZ item is True. It is the global Z-coordinate at the lowest level where auto seismic loads are applied. [L]

IBC2006R

The response modification factor.

IBC2006Omega

The system overstrength factor.

IBC2006Cd

The deflection amplification factor.

IBC2006I

The occupancy importance factor.

IBC2006Option

This is 0, 1 or 2, indicating the seismic coefficient option.

0 = Ss and S1 from USGS by latitude and longitude

1 = Ss and S1 from USGS by zip code

2 = Ss and S1 are user defined

IBC2006Latitude, IBC2006Longitude

The latitude and longitude for which the seismic coefficients are obtained. These items are used only when IBC2006Option = 0.

IBC2006ZipCode

The zip code for which the seismic coefficients are obtained. This item is used only when IBC2006Option = 1.

IBC2006SS, IBC2006S1

The seismic coefficients Ss and S1. This item is used only when IBC2006Option = 2.

IBC2006TL

The long-period transition period. [s]

IBC2006SiteClass

This is 1, 2, 3, 4, 5 or 6, indicating the site class.

1 = A

2 = B

3 = C

4 = D

5 = E

6 = F

IBC2006Fa, IBC2006Fv

The site coefficients Fa and Fv. These items are used only when IBC2006SiteClass= 6.

Remarks

This function assigns auto seismic loading parameters for the 2006 IBC code.

The function returns zero if the parameters are successfully assigned; otherwise it returns a nonzero value.

VBA Example

Sub AssignSeismicIBC2006()

'dimension variables

Dim SapObject as cOAPI

Dim SapModel As cSapModel

Dim ret As Long

'create Sap2000 object

Set SapObject = CreateObject("CSI.SAP2000.API.SapObject")

'start Sap2000 application

SapObject.ApplicationStart

'create SapModel object

Set SapModel = SapObject.SapModel

'initialize model

ret = SapModel.InitializeNewModel

'create model from template

ret = SapModel.File.New3DFrame(BeamSlab, 2, 144, 3, 336, 2, 432)

'add new load pattern

ret = SapModel.LoadPatterns.Add("EQX", LTYPE_QUAKE)

'assign IBC2006 parameters

ret = SapModel.LoadPatterns.AutoSeismic.SetIBC2006("EQX", 1, 0.05, 1, 1, 0, False, 0, 0, 8, 3, 5.5, 1, 1, 0, 0, "94704", 0, 0, 8, 3, 0, 0)

'close Sap2000

SapObject.ApplicationExit False

Set SapModel = Nothing

Set SapObject = Nothing

End Sub

Release Notes

Initial release in version 11.01.

Changed nomenclature from Load Cases, Analysis Cases and Response Combinations to Load Patterns, Load Cases and Load Combinations, respectively, in version 12.00.

See Also

GetIBC2006