Usi ng RI SA t o Desi gn a Bui l di ngg g gf r om Foundat i on t o RoofDebor ah Br i sbi n, P.E.Total Building DesignTodays AgendaLaying out your building in RISAFloorg gLaying out your building in RISAFloorModeling in RISAFloorImporting from DXFImporting from Revit StructureDesign CriteriaLoadsUniform Area LoadsSnowloading-TaperedArea Loads Snow loading Tapered Area LoadsPoint Loads & Distributed Line LoadsColumns & WallsD fi i S li i C l Defining Splices in ColumnsWall OpeningsParent &Child Relationships Parent & Child RelationshipsRigid versus Flexible DiaphragmsRISA 3DLateral LoadsTotal Building DesignTodays Agenda Laying out the building geometryg g Laying out the building geometry Columns Area Loads Area Loads Design Criteria Parent &ChildRelationships Parent & Child Relationships Rigid versus Flexible Diaphragms RISA-3DLateral Loads RISA 3D Lateral Loads RISAFoundationLaying out the Building Geometry y g g y Drawing the model in RISAFloorFirst Supports: Columns &Walls FirstSupports : Columns & Walls Then Beam systemsImport your model from a Drawing y gDXF formatPlan Level - Floor by FloorImport your model fromRevit Structure Import your model from Revit StructureENTIRE model is ImportedColumnsColumn are modeled as Column Stackswhich occupy a particular plan l i i hi h b ildi d l location within the building model.Single Story StackMultiple Story StackColumnsView the Column Stacks graphically by double clicking on the column to open the C l S k M Column Stack ManagerSplices are Column Segments can be viewedColumns SpreadsheetORAdded GraphicallyDesign Criteria- Design Rules g gC t l b d i b d Control your member design based on:DepthWidth Maximum Code CheckControl the Deflection using DL, LL, or DL+LL Ratios or MaximumsArea Loads Area Loads are Automatically Applied based on the Floors Spreadsheet Default Area Loads defined in the Area Loads Definitions SpreadsheetAdditive Check box Otherwise loads replace each otherPreDL, Post DL - Pre and Post composite Dead LoadsLL Type- LL - Live Load (Reducible on Non-Reducible), RLL - Roof Live Load (Reducible on Non-Reducible) ( )SL - Snow LoadSLN - Non Shedding Snow LoadRL - Rain LoadVibration Live Loads- used to check floor vibration per AISC Design Guide 11Dyn Load- Dynamic Mass- the load used for Seismic weight above and beyond the self weight PreDL and PostDL are NOT included.Area Loads One Way or Two Way Load Attribution defined in the Deck Definitions Spreadsheet- Loads tabOne Way Load Two Way LoadWallsMaterial: WoodMasonryGeneral(Concrete General(Concrete, CF Steel, etc.)Type: GravityLateral (also Gravity loads)Openings: Doors Windows WindowsRegions needed for Design(Piers)Parent & Child RelationshipsParent Floor is the Original FloorChild Floor is a COPY of the Parent FloorAll Geometry & Loads on the Parent floor Child FloorAll Geometry & Loads on the Child floorParent FloorNote: You can Detach Parent from Child but there is no return.Diaphragms gDiaphragms are defined in RISAFloor as you add the Slab or Deck edge.Rigid Diaphragms:RISAFloor uses Membrane Rigid Diaphragms:The Lateral loads are distributed the In-Plane Lateral Loads, while allowing for the beams and frames to take out of plane vertical loads.Diaphragm spreadsheet available in RISA-3D:f f f The Eccentricity is used to used to defined the amount of accidental eccentricity used for the calculation of your seismic loads.Note: These eccentricities are ignored for flexible diaphragms. Diaphragms gFlexible Diaphragms:Distributes lateral loads directly to the Lateral members Distributes lateral loads directly to the Lateral members RISAFloor/RISA-3D will analyze all flexible diaphragms RISAFloor/RISA-3D will designs Wood Flexible Diaphragms RISAFloor/RISA 3Dwill designs Wood Flexible Diaphragms You must define a Diaphragm Region in order to get design Diaphragm regions are rectangular in shape, and must be oriented along the principal X and Z axes. RISA-3Dwill provide nailingpatterns and panel thickness required with ChordRISA 3D will provide nailing patterns and panel thickness required with Chord Forces.RISA-3D Lateral LoadsRISA calculates the Wind Load Force for EACH diaphragm:RISA calculates the Seismic Force for each diaphragm:RISAFoundation Loads from RISAFloor (Gravity) and RISA-3D (Lateral) Loads based on Categories Loads based on CategoriesFrom RISA-3D you must define Load Categories Slabs, Footings and Grade BeamsFinal Things to Consider About RISA Building System One Model for both Gravity and Lateral DesignOne file means less data to manageAll changes to geometry apply to the entire structure Export the model to finish your Construction drawingsDXF floor by floorR it St t Revit StructureLearn more in depth features about RISAFoundation ea o e dept eatu es about S ou dat o** New Webinar** August 11, 2010Comprehensive Design of Shallow Foundations with RISAFoundationQuestions?Please let us know if you have questions.We will answer as many questions as time permits during th bi the webinar.Once the webinar is closed, we will post all Q&As to our website: www.risatech.comFor further information, contact us at: info@risatech.comTHANK YOU!