flat slab tutorial midas gen

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  • Contents

    Step 1: Model & Automesh

    Step 2: Design Parameters

    Step 3: Frame Design

    Step 4: Slab/Wall Design

    Automesh and Slab/Wall Design Tutorial

    Midas Information Technology Co., Ltd.http://en.midasuser.com

    Program Version Gen 2010 (v2.1)

    Revision Date Sep. 10, 2010

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorialIntroduction of Meshed Slab / Wall Design

    Step

    00

    This tutorial has been provided to explain how to perform meshed slab and wall design. For this reason, the procedure for general frame

    design process were not included. For the users who are not familiar with the general design features of midas Gen, it is recommended to

    review RC Design as per EN1992-1-1:2004 and Seismic Design for Reinforced Concrete Building tutorial before going through this

    tutorial.

    Element type Member type ULS (Ultimate Limit State) Design SLS (Serviceability Limit State) Design

    Beam element Beam, Column

    Bending without axial force

    Bending with axial force

    Shear

    Stress Limitation

    Crack Control

    Deflection Control

    Wall element WallBending with axial force

    Shear -

    Plate element

    SlabFlexural design (Wood-Armer moment)

    Punching shear checking

    Stress Limitation (considering cracked moment)

    Crack Control

    Deflection Control (Uncracked, Cracked)

    Wall In-plane Stress -

    In Gen 2010 (v1.1), meshed slab and wall design has been newly implemented. The following design features as per EN1992-1-1:2004 are now

    available in midas Gen.

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorialUsage Tip [ Task Pane ]

    Step

    00

    Using the task pane, we can display work procedure, required input items and optional input items for

    each analysis and design case. Using the User Defined Task Pane, the user can create a Task Pane

    manually.

    For the meshed slab wall design feature, TDF file was provided with the tutorial model files for the

    users convenience. In order to import the User Defined Task Pane, please follow the procedure below.

    1. Go to Task Pane tab in the left panel of the midas Gen window.

    2. Click [Task Pane] text from the drop down menu.

    3. Click [Import User Defined Page].

    4. Select slab desig.tpd file and click [Open] button.

    1

    3

    2

    4

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorialOverview

    Step

    00

    9 m 16 m 9 m 23 m

    5 m

    6 m

    7 m

    2 m

    12.5

    m

    Typical Floor Plan

    Sectional Elevation

    3 m

    3 m

    3 m

    3 m

    3 m

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorial

    Eurocode-1:2005

    Beam : Concrete Grade C25/30 Column: Concrete Grade C30/37

    Designation StorySection Numbe

    r

    Section Dimension

    (mm)

    Column1~5F 2 400 x 400

    Designation Story Section IDSection Dimension

    (mm)

    Girder 1~5F 1 500 x 400

    Designation Story Thickness IDThickness

    (mm)

    1 : 0.2 1~5F 1 200

    2 : 0.25 Story 2 250

    Step

    00

    Girder Section

    Column Section

    Wall Thickness

    Materials

    Applied Code

    Details of the building (1)

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorial

    Load Details

    Dead Load Self Weight Weight Density: 1 kN/m3

    Live Load Pressure LoadShopping areas : 4.0 kN/m2

    Office areas : 2.0 kN/m2

    Wind Load X-dir./ Y-dir.Eurocode-1(2005)

    Terrain Category : II

    Earthquake Load X-dir./ Y-dir.

    Eurocode-8(2004)

    Spectrum Parameters: TYPE 1

    Ground Type : B

    Importance Factor : 1.0

    Step

    00 Details of the building (2)

    Applied Load

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorial

    Step

    01

    Procedure

    2

    3

    1 File > Open Project

    Select flat slab.mgb.

    Click [Open] button.

    1-1.Opening the pre-generated model file

    3

    Open the pre-generated model file.

    2

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorial

    Procedure

    Model > Mesh >

    Auto-mesh Planar Area

    Method : Line Elements

    Type : Quad + Triangle

    Mesh Size : Length : 0.5 m

    Material : 1:C25/30

    Thickness : 1:0.2000

    Domain : 1

    Select Select by Plane

    Select XY Plane

    Click edge of the Roof

    to select Roof as a picture

    Iso View

    Click [Apply]

    1

    Step

    01

    2

    3

    4

    5

    6

    7

    8

    9

    1-2. Auto-mesh planar area (1)

    Generate meshed elements for slabs

    Specify meshed area for auto-

    meshing (Line elements method).

    10

    7

    2

    3

    4

    5

    6

    8

    9

    10

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorial

    Procedure

    Click > Select elements byidentify

    Select Wall > [Add]

    Click [Close]

    Click [Activation]

    > [Activate]

    1

    Step

    01

    2

    3

    4

    1-2. Auto-mesh planar area (2)

    Generate meshed elements for walls

    Specify meshed area for auto-

    meshing (Line elements method).

    2

    3

    41

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorial

    Procedure

    Step

    01 1-2. Auto-mesh planar area (3)

    Model >

    User Coordinate System >

    X-Z Plan

    Origin : 39, 4, 0

    Click : [Apply] > [Close]

    Model > Grids >

    Define Point Grids

    dx, dy : 1, 1

    Click : [Apply] > [Close]

    1

    2

    3

    4

    Generate meshed elements with

    opening

    Specify meshed area for auto-

    meshing (Nodes method).

    4

    2

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorial

    Procedure

    Model > Mesh >

    Auto-mesh Planar Area

    Method : Nodes

    Draw as a picture below.

    Type : Quad + Triangle

    Mesh Size : Length : 0.5 m

    Material : 1:C30/37

    Thickness : 1:0.2500

    Domain >Name : 2

    Click [Apply] > [Close]

    1

    Step

    01

    2

    3

    4

    5

    6

    1-2. Auto-mesh planar area (2)

    Generate meshed elements for walls

    Specify meshed area for auto-

    meshing (Line elements method).

    7

    2

    4

    5

    6

    1

    7

    38

    8

    1

    2

    9

    4

    3

    7

    568

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorial

    Procedure

    Model > Mesh >

    Auto-mesh Planar Area

    Method : Planar Elements

    Type : Quad + Triangle

    Mesh Size : Length : 0.5 m

    Material : 1:C30/37

    Thickness : 1:0.2500

    Click Select by window

    Select as a picture

    Domain >Name : 3

    Click [Apply]

    1

    Step

    01

    2

    3

    4

    5

    1-2. Auto-mesh planar area (2)

    Generate meshed elements for walls

    Specify meshed area for auto-

    meshing (Line elements method).

    2

    1

    4

    5

    6

    6

    3

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorial

    Procedure

    Method : Planar Elements

    Type : Quad + Triangle

    Mesh Size : Length : 0.5 m

    Material : 1:C30/37

    Thickness : 1:0.2500

    Click Select by window

    Select as a picture

    Domain >

    Name : 4

    Click [Apply] > [Close]

    1

    Step

    01

    2

    3

    4

    5

    1-2. Auto-mesh planar area (2)

    Generate meshed elements for walls

    Specify meshed area for auto-

    meshing (Line elements method).

    2

    1

    4

    5

    6

    6

    3

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorial

    Procedure

    Click Activate All

    Toggle off Point Grid

    Tree Menu > Work >

    Domain1 [1] > Double Click

    Load > Pressure Loads

    Load Case Name : LL

    Direction : Local z

    Loads : P1 : -4.0kN/m2

    Shopping areas

    D1 : Areas in general retail shops

    Click [Apply] > [Close]

    1

    Step

    02

    2

    3

    4

    5

    2-1. Pressure loads (1)

    6

    Apply floor loads. 12

    4

    5

    6

    7

    7

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorial

    Procedure

    Tree Menu > Work >

    Domain1 [2] > Double Click

    Load > Pressure Loads

    Load Case Name : LL

    Direction : Local z

    Loads : P1 : -2.0kN/m2

    Office areas

    Click [Apply]

    1

    Step

    02

    2

    3

    4

    5

    6

    Apply floor loads.

    2-1. Pressure loads (2)

    3

    4

    5

    6

    1

  • Midas Information Technology Co., Ltd.http://en.midasuser.com

    Automesh and slab / wall design tutorial

    Procedure

    Model > Building >

    Building Generation

    Number

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