SetBOCA96 {Auto Seismic}

SetBOCA96

Syntax

SapObject.SapModel.LoadPatterns.AutoSeismic.SetBOCA96

VB6 Procedure

Function SetBOCA96(ByVal Name As String, ByVal DirFlag As Long, ByVal Eccen As Double, ByVal PeriodFlag As Long, ByVal CT As Double, ByVal UserT As Double, ByVal UserZ As Boolean, ByVal TopZ As Double, ByVal BottomZ As Double, ByVal BOCA96Aa As Double, ByVal BOCA96Av As Double, ByVal BOCA96S As Double, ByVal BOCA96R 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

CT

The code-specified CT factor. This item applies when the PeriodFlag item is 1 or 2.

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]

BOCA96Aa

The effective peak acceleration coefficient.

BOCA96Av

The effective peak velocity-related coefficient.

BOCA96S

This is 1, 1.2, 1.5 or 2, indicating the site coefficient.

BOCA96R

The response modification factor.

Remarks

This function assigns auto seismic loading parameters for the 1996 BOCA code.

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

VBA Example

Sub AssignSeismicBOCA96()

'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 BOCA96 parameters

ret = SapModel.LoadPatterns.AutoSeismic.SetBOCA96("EQX", 1, 0.05, 1, 0.035, 0, False, 0, 0, 0.4, 0.4, 1.5, 8)

'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

GetBOCA96