Download - Eurocode Design midas Gen
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1Introduction
RC Design
RC Frame & Wall Design
RC Capacity Design
Meshed Slab & Wall Design
Steel Design
Steel Code Check
Steel Optimal Design
General Section Designer
BIM
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2One Stop Solution for Building and General StructuresDesign Procedure About midas Gen
Seismic Specific Functionality Static Seismic Loads
Response Spectrum Analysis
Time History Analysis (Linear & Non-linear)
Base Isolators and Dampers
Pushover Analysis
Fiber Analysis
Capacity Design: Eurocode 8, NTC2008
Comprehensive Design RC Design: ACI318, Eurocode 2 & 8, BS8110, IS:456 & 13920, CSA-A23.3,
GB50010, AIJ-WSD, TWN-USD,
Steel Design: AISC-ASD & LRFD, AISI-CFSD, Eurocode 3, BS5950, IS:800,
CSA-S16, GBJ17 & GB50017, AIJ-ASD, TWN-ASD & LSD,
SRC Design: SSRC, JGJ138, CECS28, AIJ-SRC, TWN-SRC
Footing Design: ACI381, BS8110
Slab & Wall Design: Eurocode 2
Capacity Design: Eurocode 8, NTC2008
High-rise Specific Functionality 3-D Column Shortening Reflecting change in Modulus, Creep and Shrinkage
Construction Stage Analysis accounting for change in geometry, supports
and loadings
Building model generation wizard
Automatic mass conversion
Material stiffness changes for cracked section
Intuitive User Interface Works Tree (Input summary with powerful modeling capabilities)
Models created and changed with ease
Floor Loads defined by area and on inclined plane
Built-in Section property Calculator
Tekla Structures, Revit Structures & STAAD interfaces
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One Stop Solution for Building and General Structures
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Design functions in midas Gen
Design Type
Steel : Steel code check
Steel Optimal Design / Displacement Optimal Design
Concrete : Concrete code design
Concrete code check
RC Capacity Design
Meshed Slab/ Wall Design
Footing : design
Steel
RC
Footing
Design Procedure
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One Stop Solution for Building and General Structures
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Design Procedure Introduction
Available Design Code
RC Design Steel Design SRC Design
ACI318 AISC-LRFD SSRC79
Eurocode 2, Eurocode 8 AISC-ASD JGJ138
BS8110 AISI-CFSD CECS28
IS:456 & IS:13920 Eurocode 3 AIJ-SRC
CSA-A23.3 BS5950 TWN-SRC
NTC IS:800 AIK-SRC
GB50010 CSA-S16 KSSC-CFT
AIJ-WSD GBJ17, GB50017 Footing Design
TWN-USD AIJ-ASD ACI318
AIK-USD, WSD TWN-ASD, LSD BS8110
KSCE-USD AIK-ASD, LSD, CFSD Slab Design
KCI-USD KSCE-ASD Eurocode 2
KSSC-ASD
Batch Wall
Combined Footing
Gen 2013 (v2.1)
Design+ for Eurocode - Releasing in Nov, 2013
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One Stop Solution for Building and General Structures
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Design Procedure
Eurocode Implementation Status
Introduction
Material DBConcrete Material DB Eurocode 2:2004
Steel Material DB Eurocode 3:2005
Section DB Steel Section DB UNI, BS, DIN
Load
Static Wind load Eurocode 1:2005
Static Seismic Load Eurocode 8:2004
Response Spectrum Function Eurocode 8:2004
Pushover Analysis
Masonry Pushover OPCM3431
RC Pushover Eurocode 8:2004
Steel Pushover Eurocode 8:2004
Design
Load Combination Eurocode 0:2002
Concrete Frame Design (ULS & SLS) Eurocode 2:2004
Concrete Capacity DesignEurocode 8:2004
NTC 2012
Steel Frame Design (ULS & SLS) Eurocode 3:2005
Slab/Wall Design (ULS & SLS) Eurocode 2:2004
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6RC Frame & Wall Design
Introduction
RC Design
RC Frame & Wall Design
RC Capacity Design
Meshed Slab & Wall Design
Steel Design
Steel Code Check
Steel Optimal Design
General Section Designer
BIM
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One Stop Solution for Building and General Structures
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Design Procedure
Auto calculation procedure for effective length factor(1) Calculate the stiffness, S (=EI/L), of the members which are connected to the Member a.
Fixed joint: S = (1/1.5)* EI/LHinge: S= (1/2.0)* EI/LWhere, E: Modulus of elasticity
I: Moment of inertia of sectionL: Span length of flexural member measured from center to center of joints
(2) Calculate i and j. is the ratio of (EI/lc) of compression members to (EI/l) of flexural membersin a plane at one end of a compression member.
(3) Calculate the solution, X, in the stability equation below.Braced / Non-sway frames
Unbraced / Sway frames
Where, : Ratio of (EI/lc) of compression members to (EI/l) of flexural members in a planeat one end of a compression member.
(4) Calculate the effective length factor, K
General Design Parameter Definition of Frame
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Design > General Design Parameter
> Definition of Frame
RC Frame & Wall Design
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One Stop Solution for Building and General Structures
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Design Procedure
Design > General Design Parameter > Member Assignment
When one member is divided into several elements,
separate elements can be designed as one member
using the Member Assignment function.
Member Assignment results can be displayed as
Contours by checking on the Member option in the
Design tab of the Display dialog.
General Design Parameter Member Assignment
RC Frame & Wall Design
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One Stop Solution for Building and General Structures
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Design Procedure
General Design Parameter Unbraced Length
Design > General Design Parameter > Unbraced Length
Axial forces or bending moments are calculated using the unbraced
lengths for buckling about the strong (y-axis) and weak (z-axis) axes of the
selected compression members when the members are under the loads.
Slenderness ratio about the strong axis: (KL/r)y = (Ky Ly) / roy
Slenderness ratio about the weak axis: (KL/r)z = (Kz Lz) / roz
Where,
Ly, Lz : Unbraced length about the strong and weak axes
Ky, Kz : Effective length factor about the strong and weak axes
roy, roz : radius of gyration of area about the strong and weak axes
When members are defined by Member Assignment, Unbraced lengths
about the strong axis (y-Axis) and weak axis (z-Axis) are automatically
calculated by the program considering the connectivity of the members
(e.g. connections and support conditions)
x
y
z
RC Frame & Wall Design
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One Stop Solution for Building and General Structures
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Design Procedure
General Design Parameter Laterally Unbraced Length
Design > General Design Parameter > Unbraced Length
Neutral axis in shear
Fig 1. Lateral torsional buckling Fig 2. Laterally unbraced length
The laterally unbraced length is the unbraced length for lateral buckling about the elements local x-axis when the members are under the
axial loads. The laterally unbraced length is required to calculate the design flexural strength considering lateral buckling.
a b
Laterally unbraced length : a + b
RC Frame & Wall Design
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One Stop Solution for Building and General Structures
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Design Procedure
Beam Design Rigid End Offset
Beam End Offset
Define Rigid End Offset Distance or take into account the Joint Eccentricity with respect to the GCS or element's local coordinate system at both ends
of beam elements.
Panel Zone Effect
Automatically consider the stiffness effects of the Panel Zone where column members and girder members (horizontal elements connected to
columns) of steel structures are connected. Panel Zone Effects are reflected in the beam elements.
RC Frame & Wall Design
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One Stop Solution for Building and General Structures
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Design Procedure
RC Design Limitation (Section)
Available Section Types
RC Frame & Wall Design
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One Stop Solution for Building and General Structures
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Design Procedure
Generate Load Combination
General TabCombine unit load cases to evaluate serviceability or analysis resultsirrespective of design codes.
Concrete Design TabEnter the load combinations for designing RC members according to the RCdesign codes.
Results > Load Combination
RC Frame & Wall Design
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One Stop Solution for Building and General Structures
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Design Procedure
Load Combination Type and Serviceability Parameter
RC Frame & Wall Design
Load cases will be classified as Characteristic, Frequent, or Quasi-permanent, and they will beautomatically classified when using Auto-generation.Short/Long term Load Case is assigned to compare them with proper allowable stresses.
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One Stop Solution for Building and General Structures
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Design Procedure
Partial Safety Factors
RC Frame & Wall Design
[Partial Safety Factor for Concrete] [Partial Safety Factor for Steel]
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Design Procedure
Design
Based on the section size and the factored load obtained from the most unfavorable load combination, rebar data such as rebar size and
spacing are determined. Therefore, design can be performed when the section size is determined without rebar data.
Checking
Strength verification can be performed by automatic design or by using the information of rebars (diameter, number and design
parameters) entered by the user. The results appear in blue when the strength verifications for the given section properties and rebars
are satisfactory, otherwise they appear in red.
Difference between Design and Checking
Automatic Design by Gen
Manual Calculation
Design
Automatic Rebar update
Modify Rebar Input Data
Rebar InputStrength Verification with Updated Rebars
Check
RC Frame & Wall Design
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One Stop Solution for Building and General Structures
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Design Procedure
Bending without axial force:
Ultimate Limit State Design (1)
RC Frame & Wall Design
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One Stop Solution for Building and General Structures
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Design Procedure
Bending with axial force:
RC Frame & Wall Design
Ultimate Limit State Design (2)
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One Stop Solution for Building and General Structures
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Design Procedure
Bending with axial force:
Ultimate Limit State Design (3)
RC Frame & Wall Design
Considering second order effect in analysis
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One Stop Solution for Building and General Structures
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Design Procedure RC Frame & Wall Design
Ultimate Limit State Design (3)
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One Stop Solution for Building and General Structures
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Design Procedure
Shear force:
RC Frame & Wall Design
Ultimate Limit State Design (4)
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One Stop Solution for Building and General Structures
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Design Procedure
Detailing of Members (1)
The following conditions are applied to Beam design:
The following conditions are applied to Column design:
RC Frame & Wall Design
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One Stop Solution for Building and General Structures
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Design Procedure
Detailing of Members (2)
The following conditions are applied to Wall design:
RC Frame & Wall Design
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One Stop Solution for Building and General Structures
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Design Procedure
[Detail Report]
[Graphic Report]
Check Design Results
[PM Curve]
RC Frame & Wall Design
[Design Result Dialog Box]
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One Stop Solution for Building and General Structures
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Design Procedure
Rebar Input & Modification
RC Frame & Wall Design
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One Stop Solution for Building and General Structures
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Design Procedure
When the members are overstressed, a different section size can be applied
for the design without performing the analysis again.
In order to see the effect of the modified section data in the design result,
re-perform the design.
Design > Section for Design
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Section for Design
RC Frame & Wall Design
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Meshed Slab & Wall Design
Introduction
RC Design
RC Frame & Wall Design
RC Capacity Design
Meshed Slab & Wall Design
Steel Design
Steel Code Check
Steel Optimal Design
General Section Designer
BIM
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One Stop Solution for Building and General Structures
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Design Procedure
Meshed slab and wall design
Slab and wall design for meshed plate elements as per Eurocode2-1-1:2004 Slab design for non-orthogonal reinforcement directions based on the Wood-Armer formula Smooth moment and shear forces Automatic generation of Static wind and seismic loads for flexible floors Detailing for local ductility
Wall design
Slab serviceability checking
Punching shear check result
Slab flexural design
Meshed slab and wall design
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One Stop Solution for Building and General Structures
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Design Procedure
Slab Flexural design : Required rebar area Rebar type and Spacing
Slab Flexural Design
Meshed slab and wall design
The following results are provided from flexural design:
Rebar spacing and diameter
Required rebar area
Required rebar ratio
Resistance ratio
Wood-Armer Moment
Detailed Report and Wood-Armer Moment Table
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One Stop Solution for Building and General Structures
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Design Procedure
Slab/Wall Rebars for Checking
Slab/Wall Rebars for CheckingDefine reinforcement direction
Meshed slab and wall design
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One Stop Solution for Building and General Structures
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Design Procedure
From the analysis results, following plate forces about the local axis are calculated:mxx, myy, mxy
In order to calculate design forces in the reinforcement direction, angle and will be taken as following figure:
x, y: local axis of plate element1, 2: reinforcement direction: angle between local x-direction and reinforcement direction 1: angle between reinforcement direction 1 and reinforcement direction 2
Firstly, internal forces (mxx, myy and mxy) are transformed into the a-b coordinate system.
Wood-Armer moment
Then, Wood-Armer moments are calculated as follows:
Meshed slab and wall design
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One Stop Solution for Building and General Structures
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Design Procedure
Punching Shear Checking
Meshed slab and wall design
Punching shear check results at the critical perimeter of
slab supports or the loaded points of concentrated loads
One-way shear check results along the user-defined
Shear Check Lines
Case 1. vEd : plate stress from analysis
EdEd
i
Vv
u d Case 2.
Shear stress for each side
Detailed report
V_Ed < V_Rd,c : section is safe in punching shear
V_Ed > V_Rd,c : provide shear reinforcement.
Asw/sr = (v_Ed-0.75*v_Rd_c)*(u1*d) / (1.5*d*fywd_ef)
Shear stress at the critical perimeter
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One Stop Solution for Building and General Structures
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Design Procedure
The maximum shear force is calculated by multiplying V_Ed with shear enhancement factor . The value of is different for different columns. (as given in the code)
Punching Shear Check
Meshed slab and wall design
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One Stop Solution for Building and General Structures
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Design Procedure
Slab Serviceability Check
Meshed slab and wall design
Stress Checking
Crack Control
Deflection
Stress Checking
Both compressive stress in concrete and tensile stress in
reinforcement is checked with the stress limitation specified in
the Serviceability Parameters dialog box.
When plate force exceeds cracked moment, the program can
automatically consider the cracked section in stress checking.
Crack Control
Crack width, minimum rebar area to control the crack, maximum
bar spacing, and maximum bar diameter for crack can be
checked in the contour as well as the detailed report.
Deflection
Deflection for un-cracked section can be calculated considering
long-term deflection due to creep. Deflection for cracked section
can be provided in the upcoming version.
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One Stop Solution for Building and General Structures
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Design Procedure
Cracked Section Analysis
Cracked section analysis for deflection check Long-term effect considering creep coefficient
Deflection Check Results by Cracked Section Analysis
Meshed slab and wall design
eff cr g
M M M(1 )
EI EI EI
eff cr g
1 1 1(1 )
I I I
2crM1 ( )M
' 0.5' is applied(long termloading).
2
ctm
cr
f bhM
6
32 s
cr s c c
c
E 1I A (d d ) bd
E 3
2
s s s s s s c,eff
c
c,eff
A E (A E ) 2bA E E dd
bE
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One Stop Solution for Building and General Structures
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Design Procedure
Wall Design
Meshed slab and wall design
Members requiring reinforcement
In locations where Edy is tensile or Edx Edy 2
Edxy
Members not requiring reinforcement
In locations where Edx and Edy are both compressive and Edx Edy >
2Edxy
Limitation in concrete stress
cd fcd
Wall design results are provided in contour, detailed
report, and design force table. Also, concrete stress (cd)
can be checked with fcd.
The following results are provided from wall design:
Rebar spacing and diameter
Required rebar area & Required rebar ratio
Resistance ratio
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RC Capacity Design
Introduction
RC Design
RC Frame & Wall Design
RC Capacity Design
Meshed Slab & Wall Design
Steel Design
Steel Code Check
Steel Optimal Design
General Section Designer
BIM
02
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One Stop Solution for Building and General Structures
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Design Procedure
Seismic Design procedure as per EN1998-1:2004
RC Capacity Design
Performance Requirement
Ground Condition
Seismic Action
Combination of Seismic Action
Criteria for Structural Regularity
Seismic Analysis
Safety Verification
Capacity Design & Detailing
Seismic ZoneRepresentation of seismic action
[Method of Analysis]Lateral Force method of AnalysisModal Response Spectrum AnalysisPushover AnalysisInelastic Time History Analysis
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One Stop Solution for Building and General Structures
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Design Procedure
Capacity Design Feature
structures to provide the appropriate amount of ductility in the corresponding ductility classes. Automatic capacity design capability for beam, column, wall and beam-column joint EN 1998-1: 2004 (DCM/DCH), NTC2008 (CD B, CD A), ACI318-05 Design action effects are calculated in accordance with the capacity design rule. Special provision for
ductile primary seismic walls is considered. Detailing for local ductility is considered.
- max/min reinforcement ratio of the tension zone- the spacing of hoops within the critical region- mechanical volumetric ratio of confining hoops with the critical regions
Capacity design shear forces on beams
Define ductility class and check design results Design envelope moments in walls
RC Capacity Design
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One Stop Solution for Building and General Structures
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Design Procedure
Design member forces (Design moments)
Where,
MRb: Beam moment resistance
Mce : column member force due to seismic load case
RC Capacity Design
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One Stop Solution for Building and General Structures
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Design Procedure
Design member forces (Design shear forces)
Capacity design values of shear forces on beams
Capacity design shear force in columns
Where, MRb: Beam moment resistance
MRc: Column moment resistance (calcul
ated using same axial force ratio in
PM interaction curve)
Mce: Bending moment of column due to
seismic load case
RC Capacity Design
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One Stop Solution for Building and General Structures
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Design Procedure
Design envelope for bending moments in slender walls Design envelope of the shear forces in the walls of a dual system
Design member forces (Wall design forces)
Wall systems Dual systems
RC Capacity Design
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Steel Code Check
Introduction
RC Design
RC Frame & Wall Design
RC Capacity Design
Meshed Slab & Wall Design
Steel Design
Steel Code Check
Steel Optimal Design
General Section Designer
BIM
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One Stop Solution for Building and General Structures
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Design Procedure
Applicable Sections of Ultimate Limit State Check Limitation
Steel Code Check
Cross section
Limit States
Yielding Flexural Buckling
Shear BucklingLTB
Strong axis Weak axis
I sectionDoubly Symmetric N/A
Singly Symmetric N/A N/A
Box (2) N/A
Angle N/A N/A N/A
Channel N/A N/A
Tee N/A N/A N/A
Double Angle N/A N/A N/A
Double Channel N/A N/A
Pipe N/A N/A N/A
Solid Rectangle N/A N/A N/A
Solid Round N/A N/A N/A
U-Rib N/A N/A N/A N/A N/A
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One Stop Solution for Building and General Structures
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Design Procedure
Resistance of cross-sections:
Ultimate Limit State Design (1)
Steel Code Check
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One Stop Solution for Building and General Structures
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Design Procedure
Resistance of cross-sections:
Ultimate Limit State Design (2)
Steel Code Check
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One Stop Solution for Building and General Structures
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Design Procedure
Resistance of cross-sections:
Ultimate Limit State Design (3)
Steel Code Check
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One Stop Solution for Building and General Structures
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Design Procedure
Steel Checking Design Results
Change
Propose sections satisfying the selected element conditions.
Steel Code Check
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Steel Optimal Design
Introduction
RC Design
RC Frame & Wall Design
RC Capacity Design
Meshed Slab & Wall Design
Steel Design
Steel Code Check
Steel Optimal Design
General Section Designer
BIM
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One Stop Solution for Building and General Structures
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Design Procedure
As shown in the Optimal Design Result (Average Ratio) graph, average ratio of column members is about 0.4 since
all the sections within 5% of the entered dimensions are examined for strength verification. Therefore, we will
reduce the section dimension and re-perform Steel Optimal Design.All the sections within 5% of the
entered dimensions are examined for strength verification.
If the entry is "0", all dimensions are searched.
Steel Optimal Design Design Results
Steel Optimal Design
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General Section Designer
Introduction
RC Design
RC Frame & Wall Design
RC Capacity Design
Meshed Slab & Wall Design
Steel Design
Steel Code Check
Steel Optimal Design
General Section Designer
BIM
02
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One Stop Solution for Building and General Structures
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Design Procedure
Definition of any Irregular cross-section.
Calculation of Section Properties.
Generation of P-M, P-My-Mz, M-M interaction curves.
Calculation of Section Capacity in flexure.
Calculation of Safety Ratio based on the member forces.
Generation of Moment-Curvature curve.
Plot of Stress Contours for all the cross-section.
All the above features are supported for
RC Sections
Steel Sections
Composite Sections
Scope of GSD
General Section Designer
Stress Contour
Moment- Curvature
3D PM Interaction curve
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One Stop Solution for Building and General Structures
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Design Procedure General Section Designer
Generating Report
Report in MS-Excel format is generated on clicking [Report] button in any of the result pages.
It is saved in the same folder as that of the model file.
Any item can be added to the report by clicking the [Report] button.
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One Stop Solution for Building and General Structures
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Design Procedure
Shapes created in AutoCAD can be imported into GSD to create sections.
Rebar coordinates can also be imported as a separate layer.
General Section Designer
Importing AutoCAD dxf files
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One Stop Solution for Building and General Structures
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Design Procedure General Section Designer
Link between midas Gen to GSD
Connect a link with midas Gen or Civil to import a cross-section shape, material properties,
and member forces for the desired element position. The user can also export section
properties and cross-section shape of a general section from GSD to mdias Gen or Civil.
midas GSD can import the following types of the sections from midas Gen and Civil:
DB/User, Value, SRC, and Tapered type sections.
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Building Information Modeling
Introduction
RC Design
RC Frame & Wall Design
RC Capacity Design
Meshed Slab & Wall Design
Steel Design
Steel Code Check
Steel Optimal Design
General Section Designer
BIM
02
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One Stop Solution for Building and General Structures
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Midas Link for Revit Structure supports the following workflows:
(1) Send the Revit Structure analytical model to midas Gen.
(2) Import the MGT file of the Revit model in midas Gen.
(3) Export the midas model file to the MGT file.
(4) Update the Revit Structure model from midas Gen
Revit interface
Building Information Modeling
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One Stop Solution for Building and General Structures
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Building Information Modeling
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One Stop Solution for Building and General Structures
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Category FeaturesRevit to
midas Gen
Material
Concrete v
Steel v
Pre Cast Concrete v
Section
Concrete v
Steel v
SRC N/A
Member
ColumnVertical Column v
Inclined Column v
Beam
Straight Beam v
Curved Beam v
Inclined Beam v
Wall
Straight Wall v
Curved Wall v
Inclined Wall v
Masonry Wall N/A
Wall Opening v
Brace v
Truss(Top chord, Bottom chord, and Web) v
Slab v (Import only)
Building Information Modeling
Category FeaturesRevit to
midas Gen
Boundary
Support(Hinge, Roller, Fixed) v
Beam End Release v
Section Offset N/A
Static Load
Self Weight N/A
Dead Load v
Live Load v
Wind Load v
Seismic Load v
Temperature Load v
Snow Load v
Accidental Load v
Live Load on the roof v
Point Load , Hosted Point Load v
Line Load , Hosted Line Load v
Area Load v
Hosted Area Load N/A
Load Combination
Load Combination v
Applicable data for MIDAS Link for Revit Structure
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One Stop Solution for Building and General Structures
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Building Information Modeling
What is Updated from midas Gen to Revit Structure
Sections
If assigned section is changed to the other section pre-defined in the model, the corresponding element in Revit will be updated accordingly.
If assigned section is changed to the other section newly added in midas Gen, the corresponding element in Revit will be assigned to a default
section (arbitrary section which has a same material type in a model).
Delete Elements
If an element is deleted in midas Gen, the corresponding element in Revit will be deleted accordingly.
Move Elements
If an element is moved in midas Gen, the corresponding frame element or column in Revit will be moved accordingly.
Add Elements
If a beam element (solid box section only) is newly added, a corresponding element in Revit will be added accordingly.
Change Beta-Angle
If beta-angle in a beam element is changed, a corresponding element in Revit will be updated accordingly.
Materials
If material data assigned to an element is modified, a corresponding element in Revit will be assigned to a default material (arbitrary material existed
in Revit).