designplus user guide_eurocode rc

midas Design+ Solution for Structural Member Design with Drawing & Report

Midas Design+ 2014 (v1.1)

User Guide for Eurocode Modules

Design+ Interface

General Column Design

Combined Wall Design

Strip Foundation Design

Design Parameters

midas Design+ User Guide 2

Message Window Display various information, warning,

and error messages.

midas Link Link with midas Gen

Multiple members can be selected and imported.

Workbar Preview

Change the current working mode

Add new member Add or import new members.

Design+ Interface

Solution for Structural Member Design with Drawing & Report

Project/Simple/Check Mode

Member name change, Grouping,

Report and Drawing Export Setup

Input Member force

(similar with midas Set)

SIMPLE MODE •Simple and intuitive user interface

•Quick generation of summary/detail design result in Preview window

PROJECT MODE •Auto generation of drawing •MS word format report for design/check results, Batch report generation

•Bill of materials

Tab. Switch the working window between member list, drawing, Quantity

Report Generate input data, summary,

and detail design result report

• Detail

• Summary

• Input List

Report Generate MS word and excel

format report.

• Detail

• Summary

• Input List

• Input List (Excel)

Design or check results are

displayed instantly.

01


Workbar

Preview Option

Design+ Interface


Click a desired member from Tree

menu. The user does not need to re-

perform Design/Check again in Check

mode.

Check MODE •Reviewing detail/summary design results in Preview window

Report Save/Print design results.

Select Detail / Summary to check

the relevant report.

01

Contents



02 midas Design+ Combined Wall

2 Input Data

Import 1

3 Review Design Results

4 Member List

5 Drawing

6 Quantity


1. Execute “Wall(Comb.)” module.

2. Click “Project Mode”.

3. Click “midas Link”. Refer to the next page for

more details in the limitation of midas Link.

4. Select midas Gen to be linked with Design+.

5. Select desired wall elements to be imported from midas Gen.

6. Click [Connect] button.

7. Click [Import] button. 8. Check imported walls.

Step 01 Import

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1. Wall ID must be different for each unit wall in midas Gen as shown in the figure below.

Importing combined walls with the same wall ID is not supported.

2. Walls must be located in a single story can be imported as combined wall in Design+.

3. Discontinuous combined walls cannot be designed in Design+.

Step 01 Import

Note

Not Applicable (Identical Wall ID) Applicable (Different Wall ID)

Applicable (Importing Walls in One Story) Not Applicable (Discontinuity in Combined Wall)

Limitation of midas Gen Link for Combined Wall Design


1. Select a combined wall from

the tree menu. 2. Specify Member Name and the

additional task scope after design.

3. Material Strength Concrete: Characteristic

compressive of concrete Ver. /Hor. Bar: Characteristic

yield strength of vertical/ horizontal reinforcement

If the material strength was not identical for each unit wall in midas Gen, minimum strength will be applied.

4. Specify whether effective width applied or not. Actual Width Effective Width

5. Specify unbraced length and effective length factor.

Click and use the K-Factor Input dialog box shown below to use default values.

6. Effective Creep Ratio for the calculation of slenderness criterion (λlim) as per clause 5.8.3.1(1), EN1992-1-1: 2004

7. Equivalent Dimension for calculating eccentric moment due to imperfection as per clause 6.1(4),EN1992-1-1:2004

8. Options for considering moment magnification due to imperfections and 2nd order effects as per clause 5.8.3.1(1), EN1992-1-1:2004.

9. Transfer Combined Wall Wall design is performed about global X and Y axis. Rotate combined wall to make major and minor axis of the wall aligned in the global X and Y axis.

When Parallel Dir. Is X or Y-Dir.: Rotate combined wall based on the local x or y-direction of a reference base wall.

When Parallel Dir. Is User Input: Specify the angle to be rotated about Global X-axis.

Step 02 Input Data – Section-1 Tab

Effective flange width is calculated based on the clause 5.4.3.4.1 (4), EN1998-1:2004. It is taken as the minimum of:

a) the actual flange width; b) one-half of the distance to

an adjacent web of the wall; and

c) 25% of the total height of the wall above the level considered.

“Effective Width” can be displayed using “Effective Section” option as shown below.

Note

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Display Effective Section Global Axis of Combined Wall

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Note

K=1.0 K=0.5 K=0.7 K=2.0

Effective Length Scale Factor


1. Add, modify or delete unit wall data for rebar and section information.

Click [Wall Data] button to see and modify rebar and section information for entire unit wall in a tabular format.

2. Data of vertical/ horizontal/ end rebar for the selected unit wall.

3. Select Rebar Arrangement.

Divide equally by nearest space: Rebar spacing is adjusted to f it the wall dimension using equal spacing throughout the wall length.

Divide by exact space: Specif ied rebar spacing is applied f rom the End or Middle of the unit wall.

4. Specify wall thickness and concrete cover thickness.

In Preference, the user can choose Concrete Cover Depth as clear cover or distance to the rebar center. By default, concrete cover is applied as clear cover thickness.

5. Specify the wall coordinates of start and end point and vertical rebars for each unit wall.


Wall Data in a Tabular Format General tab in Preference

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1. Enter the design forces and factors for the selected unit wall.

Toggle on : Design forces can be directly entered for the selected unit wall in the dialog box .

Toggle off : Enter the multiple design forces for the selected unit wall by clicking [Load Combinations] button.

When combined wall is imported from midas Gen, all Strength type load combinations are automatically generated in Load Combinations dialog box.

Most critical load combinations for axial/ flexure design and shear design are displayed in blue cells at the top of the Load Combination table.


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Load Combination for Selected Unit Wall

Forces displayed in this dialog box are not a combined design force, but the design force of each unit wall. Combined design forces are displayed in Detail/Summary Report. Refer to the next page for the

calculation procedure of combined forces.

Note

Combined Design Force in Detail/Summary Report


1. Axial force: Summation of axial forces in unit walls (sign convention: “+” in compression)

2. Shear force: Summation of shear forces in unit walls. Shear forces of unit walls are re-calculated in global X and Y-direction.

3. Bending moment is calculated as a summation of bending moments and eccentric moments

(axial force * eccentricity from a unit wall centroid to the combined wall centroid) of unit walls about global X and Y-direction.

• When local axis of a unit wall is not aligned in the global X and Y-direction, combined design forces are calculated using the component of the forces in the global X and Y-direction.

* Transfer Combined Wall Wall design is performed about global X and Y axis. Rotate combined wall to make major and minor axis of the wall aligned in the global X and Y axis.

When Parallel Dir. Is X or Y-Dir.: Rotate combined wall based on the local x or y-direction of a reference base wall.

When Parallel Dir. Is User Input: Specify the angle to be rotated about Global X-axis.


Note How to Calculate Combined Design Forces

Global Axis of Combined Wall


1. Click [Check] button.

2. Review Calculation Result table for moment and shear capacity.

3. Click [Report] button to generate Detail/ Summary /Input List Report.

Step 03 Review Design Results

MS Word Format Detail Report

Excel Format Input List

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P-M Curve 3D P-M interaction is considered

to find the flexure resistance. After performing wall checking, Midas Design+ displays P-M Curve in “Theta” angle described below.

Theta: Angle between the Moment axis (horizontal axis) and the line which connects the origin point to the member force point in PM interaction curve N.A.: Neutral axis angle from the local x-axis

Note


1.Select [Member List] tab. Input and output data can be checked and modified for the all combined walls.

2. Click [Apply] button if there is any change in the design input data.

3.Click [All] and [Check] button to verify the all wall design results at once.

Step 04 Member List 1

Step 05 Drawing

1.Select [Drawing] tab.

2. Select [Shear Wall (Combined)] from the drop-down box and click [Create] button to generate combined wall drawings.

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Step Quantity 06 1.Select [Quantity] tab.

2. Select [Shear Wall (Combined)] from the drop-down box and click [Create] button to generate bill of materials.

3.Click [Export to Excel] button to generate a MS Excel file.

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Quantity of concrete is calculated as concrete volume per unit length. Quantity of form is calculated

using surface area of concrete per unit length. Quantity of rebar is calculated as

weight of rebar per unit length. Weight of rebar for EN, UNI, and BS material DB is applied as shown in the table below.

Note

EN/BS P5 P6 P7 P8 P9 P10 P11 P12 P13 P16 P20 P25 P32 P40 Weight (kg/m) 0.154 0.222 0.302 0.395 0.499 0.617 0.746 0.888 1.043 1.578 2.466 3.853 6.313 9.865 Diameter (mm) 5 6 7 8 9 10 11 12 13 16 20 25 32 40

Area (mm2) 19.6 28.27 38.5 50.27 63.6 78.54 95 113.1 132.7 201.06 314.16 490.87 804.25 1256.6

UNI P4 P5 P6 P8 P10 P12 P14 P16 P18 P20 P22 P24 P26 P30 P32 P36 P40 Weight (kg/m) 0.099 0.154 0.222 0.395 0.617 0.888 1.208 1.578 1.998 2.466 2.984 3.551 4.168 5.549 6.313 7.99 9.865 Diameter (mm) 4 5 6 8 10 12 14 16 18 20 22 24 26 30 32 36 40

Area (mm2) 13 20 28 50 79 113 154 201 254 314 380 452 531 707 804 1018 1257

Material Properties of EN & BS DB

Material Properties of UNI DB


Contents


03 midas Design+ General Column

General Column Design 1

3 Member List (MS Excel) Set Input Data 2



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1. Select a general column from the tree menu.

2. Specify Member Name and the additional task scope after design.

3. Material Strength

Concrete: Characteristic compressive of concrete

Main/Hoop Bar: Characteristic yield strength of major/ hoop reinforcement

4. Specify unbraced length and effective length factor.

Click button to use the default values.

5. Select a splicing option for the main rebars.

None: Longitudinal rebars calculated without considering splicing

50%: Longitudinal rebars calculated considering 50%-splicing


6. Equivalent Dimension for calculating eccentric moment due to imperfection as per clause 6.1(4),EN1992-1-1:2004

7. Options for considering moment magnification due to imperfections and 2nd order effects as per clause 5.8.3.1(1), EN1992-1-1:2004.

Tool-tip is displayed when

hovering the mouse over field

with * mark.

Note

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Effective Length Scale Factor Note

K=1.0 K=0.5 K=0.7 K=2.0



1. Specify concrete cover thickness. Concrete Cover is applied as the distance from the concrete face to the rebar center.

2. Enter diameter and spacing of hoop bars.

Check on “Use User Input” option to apply different rebar diameter and spacing at the top and bottom.

3. Enter the design forces.

4. Effective Creep Ratio for the calculation of slenderness criterion (λlim) as per clause 5.8.3.1(1), EN1992-1-1: 2004

5. Load Combinations

Toggle on : Design forces can be directly entered in the dialog box.

Toggle off : Enter the multiple design forces by clicking [Load Combinations] button.

When general column is imported from midas Gen, 14 load combinations which composed of maximum and minimum combinations of the following components are generated:

Max for axial, major moment (top/bot), minor moment (top/bot), and shear force (top/bot) (7) + Min for Axial, major moment (top/bot), minor moment (top/bot), and shear force (top/bot) (7) = (14) combinations

Most critical load combinations for axial/ flexure design and shear design are displayed at the top of the Load Combination table.

When calculating shear resistance, different value of axial force from the value for Axial Force and Moment verification can be defined. Since shear resistance increase as axial force increases, smaller axial force may occur more critical case in shear force verification. Also shear resistance due to concrete is considered as zero in tensile axial force.

Note

Load Combination for General Column

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Step 01 Input Data

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1. Define general section shape.

CAD Files: Import “*.dwg” or “*.dfx” f ile. Specify section shape layer and rebar layer separately.

MIDAS Section(*.sec): Import “*.sec” f ile generated f rom midas SPC or GSD module.

2. Specify the number of main rebars and diameter.

The number of rebars must be larger than the number of edges.

3. Section Information

Shape: Section coordinates

Main Bar: Main rebar coordinates

Tie Bar: Tie bar position. Specify two main rebars by index between which a tie rebar is placed.

Check on “Show Index” option to display main rebar index.

Import CAD File


1. Click [Design] or [Check] button.

Check: Verify resistance ratio based on the user input data.

Design: midas Design+ update optimized rebar dimension and spacing. The range of rebar to be used in Design can be specified in Rebar Option (from the main menu, Tools > Rebar Option).

2. Check calculation results.

3. Check “PM Curve” option.



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MS Word Format Detail Report

Excel Format Input List

P-M Curve 3D P-M interaction is considered

to find the flexure resistance. After performing column checking, Midas Design+ displays P-M Curve in “Theta” angle described below.

Theta: Angle between the Moment axis (horizontal axis) and the line which connects the origin point to the member force point in PM interaction curve N.A.: Neutral axis angle from the local x-axis

Note


Step 04 Member List

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Step 05 Drawing

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1.Select [Member List] tab. Input and output data can be checked and modified for the all general columns.


3.Click [All] and [Check] button to verify the all general column design results at once.


2. Select [Column(General)] from the drop-down box and click [Create] button to generate general column drawings.


Step Quantity 06 1

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1.Select [Quantity] tab.

2. Select [Column(General)] from the drop-down box and click [Create] button to generate bill of materials.

3.Click [Export to Excel] button to generate the table in MS excel format.




Note


Area (mm2) 19.6 28.27 38.5 50.27 63.6 78.54 95 113.1 132.7 201.06 314.16 490.87 804.25 1256.6


Area (mm2) 13 20 28 50 79 113 154 201 254 314 380 452 531 707 804 1018 1257




Contents


04 midas Design+ Strip Footing

2 Input Data

Import 1

3 Review Design Results

4 Member List

5 Drawing

6 Quantity


1. Execute “Footing(Strip)” module.

2. Click “Project Mode”.

Design member force can be imported from midas Gen when “Project Mode” is selected.

3. Click “midas Link”.

Solid rectangle, T-Section, and Inverted T-Section in midas Gen can be imported into Design+ to perform strip footing design.

In case of “Inverted T-Section”, left and right flange width (b1 and b2) must be identical.

Midas Link supports beam elements which are assigned Point Spring Support or Surface Spring Support.

4. Select midas Gen to be linked with Design+.

5. Select desired strip footing elements to be imported from midas Gen.

6. Click [Connect] button. 7. Click [Import] button. 8. Check imported footings.

Step 01 Import

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Step 02 Input Data

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1. Select a strip footing from the tree menu.

2. Specify Member Name and the additional task scope after design.

3. Material Strength

- Concrete: Characteristic compressive strength of concrete

- Main Bar, Stirrup, Transv. Bar: Characteristic yield strength of reinforcement

4. Enter section size and concrete cover depth.

Use Bottom Cover: Check on the option to apply identical concrete cover depth for top and bottom.

5. Specify flexure design method between singly reinforced beam and double reinforced beam design.

6. Specify soil bearing capacity to be compared with soil reaction.

7. Select a splicing option for the main rebars. None: Longitudinal rebars

calculated without considering splicing



Tool-tip is displayed when

hovering the mouse over field

with * mark.

Note


1. Rebar Arrangement

Type-1 (All section): Select when rebar data for i-end, middle and j-end are identical.

Type-2 (Both End & Center): Select when rebar data for i-end and j-end are identical.

Type-3 (Each End & Center): Select when rebar data for i-end, middle and j-end are not identical.

2. Change Section Data

max(i,m,j): Click to apply maximum design forces and rebar data to all sections.

max(i,j): Click to apply the critical design combinations and rebar f rom i and j-end s to both ends.

i↔j: Click to swap design forces and rebar data between i and j-end.

Change Force Only: Check on the option to change design forces only when applying above buttons.

3. Design Options

Use Different Rebar at each layer: Check on to use dif ferent rebar diameter for layer1 and 2.

Use Same Main Rebar at Top and Bottom: Check on when the top rebar size is the same as bottom rebar size.

Show Load Combinations: Display load combination name with design forces.

Step 03 Input Data

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Design Forces imported from midas Gen

Envelope values among the all load combinations are imported from midas Gen.

If “Member Assignment” is specified, the envelope values at i-end, middle, and

j-end of a member are imported.

Note


The dimension of Continuous Beam Strip footing is

determined as follows: 1. The rectangular beam in red box is designed from

the longitudinal moment and shear.

2. The bottom width of strip footing is determined from allowable bearing pressure. The allowable bearing pressure needs to be entered by user.

3. The thickness and reinforcements in the cantilever

are determined from the moments and shear forces due to soil pressure. The soil pressure is taken from the soil pressure calculated in midas Gen (from the

main menu, Results > Reactions > Soil Pressure) .

Note How to Design Strip Footing


Moment & Shear Resistance

Soil Reaction

Transverse Bar & Shear (1-way)

Design Forces in Strip Footing

Load

Loading

Column Loads

Pressure

Bending Moments

Reinforcement

Cantilever bars Longitudinal bending +ve and –ve reinforcement



1. Click [Design] or [Check] button.

Check: Verify resistance ratio based on the user input data.

Design: Verify resistance ratio and update rebar if required.

2. Check calculation results.


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MS Word Format Detail Report Excel Format Input List


1.Select [Member List] tab. Input and output data can be checked and modified for the all strip footings.


3.Click [All] and [Check] button to verify the all strip footing design results at once.

Step 05 Member List

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Step 06 Drawing


2. Select [Footing(Strip)] from the drop-down box and click [Create] button to generate strip footing drawings.

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Step Quantity 07 1

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1.Select [Quantity] tab.

2. Select [Footing(Strip)] from the drop-down box and click [Create] button to generate bill of materials.

3.Click [Export to Excel] button to generate the MS excel file.




Note


Area (mm2) 19.6 28.27 38.5 50.27 63.6 78.54 95 113.1 132.7 201.06 314.16 490.87 804.25 1256.6


Area (mm2) 13 20 28 50 79 113 154 201 254 314 380 452 531 707 804 1018 1257




Contents


05 midas Design+ Design Parameter

2 Workbar Reordering

Preference 1

3 Change Member Name in Workbar


1. From the main menu,

click Option > Preference.

Click “RC(1)” tab.

2. Click “RC(2)” tab.

3. Click “Section” tab.

Step 01 Preference Setting 1

1 Slab / Shear Wall •Change section by Design: Check on to update section size in Design. Max. Thick: Check on to specify the maximum thickness. Beam / Column •Change section by Design: Check on to update section size in Design. •Max. Width / Max. Height: Check on to specify the maximum width and height. Basement Wall / Footing •Change section by Design : Check on to modify the thickness in Design. •Max. Thick: Check on to specify the maximum thickness. •Apply shear reinforcement: Specify the applicable shear rebar diameter.

2 Buttress / Corbel •Change section by Design: Check on to update section size in Design. •Max. Width / Max. Height: Check on to specify the maximum width and height. •Max. Layer No.: Maximum number of layers to be used in Design. Stair •Change section by Design: Check on to update section size in Design. •Max. Thick: Check on to specify the maximum thickness.

Section Increment(RC): Specify the dimension increment for Design.

Preference dialog box can be

invoked from Workbar by clicking

“Design Option > Preference”.

Click [Default] button to reset all

the preference settings.

Note

3


1. Click “General” tab.

2. Click “Word” tab.


User Interface Mode • Select default model when executing the program.

Default Report Type for Simple Mode/Check Mode • Default report type once design or check is performed.

Cover Concrete Depth • Use clear cover: Define concrete cover depth as clear depth • Use distance from face to rebar center: Define concrete cover depth as the distance from the center of the rebar to the concrete face

※ In case of column, “Use distance from face to rebar center” option is always applied. Result data • Do not Delete Results Data When Input Data is Changed: Retain design results when design parameters are changed.

• Include design result in Input File(Excel): Check on to include design results in input list excel report.

• Show “Apply” Button in Member Dialog: Display [Apply] button in Member tab.

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Word •Modify default settings of font and text size for MS word report generated from Project Mode.


1. Click Drawing tab.

2. Click File tab.

3. Click Layer tab.


Tie bar of Circular Column • Parallel : • Radial : Rebar Name • Use Name by Strength: Check on to enter the rebar name by rebar strength. Print design force • Select design forces to be printed in the drawing file.

Frame File / Legend File • Specify the file path of default files.

Layer •Specify the default line color and line type for drawing.

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Step Workbar Reordering 02 1. In order to change the

member order in Workbar, right-click on Beam and select Reordering.

2. Modify the order of members.

2a. Select members to change the order and click [>>] button.

2b. Click [Up] or [Down] button to change the member order.

2c. Click [Apply] and [OK] button.

2d. Check the updated member order in Workbar.

2a 2b

2c

The user can simply use “drag &

drop” on the Workbar to change

the member order.

Note

Step 03 Change member name in Workbar

1. In order to modify member name displayed in the Workbar, right-click on the desired member and select “Rename” from the context menu. “F2” key from keyboard can also be used.

- Press [Enter] af ter entering the new member name.

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