11/04/2023

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Struds

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Award Winning Integrated Structural Analysis, Design and Detailing Software with 20 Years Proven Track Record

6000+ user base all over India…

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Graphical user interface

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Tree Menu

Command Prompt

Main Menu Toolbar Menu

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Modeling Features

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Slabs

Rectangular Slab

Triangular Slab

Trapezoidal Slab

General Slab

Flat Slab

Curved Beams

With three points

With Start point

Center and end point

With start point,

Center , included

angle

With Start point, End

point and radius Beams

Straight Beam

Inclined Beam

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Curved Beam

Inclined BeamTriangularSlab

RectangularSlab

GeneralSlab

Straightbeam

Modeling Features

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Modeling Features

Columns

Rectangular

Circular

T-Shape

L- Shape

Shear Walls Straight

L- Shape

C- Shape

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Modeling Features

L Shape Shearwall

C Shape Shearwall

L Shape Shearwall

Circular Column

T Shape Column

L Shape Column

Rectangular Column

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3 D Wire frame

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3 D Render View

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Support Conditions

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Fixed

Roller

Hinged

User Defined

Member Releases

Pinned – Pinned

Fixed – Pinned

User Defined

Pinned – Fixed

Fixed - Fixed

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Import / Export from 3rd party software

Import Export STAAD Pro File

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Export

Import

STRUDS model could be opened in STAAD to visualize the structure and also to perform analysis. STAAD model along with analysis could be imported in STRUDS for design and detailing.

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Exports / Imports ETABS (*.$ET) File

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STRUDS model could be opened in ETABS to visualize the structure and also to perform analysis. ETABS model along with its analysis file could be imported in STRUDS for design and detailing.

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Exports / Imports AutoCAD (DXF) File

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STRUDS imports the floor centerline plan from Auto CAD, using DXF file format.

Files generated in STRUDS can be exported to Auto CAD in DXF file format.

Export

Import

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EQ Load Analysis

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User provides basic data in a single windowStruds automatically generates seismic loads as per IS:1893 (2002) from the basic dataAutomatic live load reduction on floors Eccentricity due to centre of mass and centre of stiffness consideredSoft storey effect can be considered for column designFloor diaphragm action can be taken into accountScaling factor automatically computedConsideration of vertical seismic loads on cantilever projections

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Torsion effect

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CMEQx

EQy

L

W

Y

X

ex ex

ey

ey

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C.M.

C.S..

ELe

EL . e

C.S..

C.M.EL

e

As per Cl. 7.9 Seismic Force acts at center of mass which is same as a force (EL) plus a twisting moment (EL.e) acting at center of stiffness.

Torsion effect

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Floor Diaphragm Action

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Soft storey effect

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Soft Storeys can be defined. User should enter the factor, by which the end actions for all the members of this soft storey need to be modified. Due to this the beams at the upper and lower level, as well as the columns in between these two levels, will be designed for the elemental end forces obtained in the analysis multiplied by the factor, which you have specified.

By default the factor is taken as 2.5

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Vertical seismic load effects in horizontal cantilevers

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Scaling Factor

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As per clause number 7.8.2 of IS 1893(Part 1) :2002 If we generate earthquake loads by response spectrum method, the design base shear (VB) shall be compared with a base shear (VB) calculated by using a fundamental period Ta, where Ta is as per clause 7.6 where VB is less than VB, all the response quantities (Member forces, displacements, story forces, story shears and base reactions) shall be multiplied by VB / VB

Scaling factor = VB / VB

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Seismic Analysis Methods

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Static AnalysisIn Static analysis the fundamental time period is

calculated using IS 1893(part 1):2002• Frame Stiffness method• Column Reaction method

Dynamic AnalysisResponse Spectrum method STRUDS calculates design base shear calculation

using the response spectra

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Frame Stiffness Method

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PF1

PF2

PF3

PF1

Unit Load

W1

W2

W3

h1

h2

h3

1

Q1

Q2

Q3

K1 = 1 / Δ1

Similarly, K2 = = 1 / Δ2 , K3 = = 1 / Δ3

K = K1 + K2 + K3

Distribution Factor DF1 = K1 / K

VbPF1 = DF1 x Vbx

Wh2 = W1h12 + W2h2

2 + W3h32

Q1 = (W1h12 / Wh2) x VbPF1

Similarly base shear is calculated for Q2 Q3

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Frame Stiffness Method Report

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Column Reaction Method

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Unit Load

W1

W2

W3

h1

h2

h3

1

Vb1

R1

R3

R5

R2

R4

R6

Q1

Q3

Q5

R = R1 +R2 + R3

Distribution Factor DF1 = R1 /R

Q1 = DF1 x Vb1

Similarly the Q2 ,Q3 ,Q4,Q5 and Q6 is calculated

Wh2 = W1h12 + W2h2

2 + W3h32

Vb1 = (W1h12 / Wh2) x Vbx

Similarly base shear is calculated for Vb2 Vb3

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Column Reaction Method Report

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Response Spectrum Method

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Lumped mass generation

Frequency calculation

Time period calculation

Calculation of base shear as per given spectra and time period for particular mode shape

Super impose of base shear of all mode shapes using SRSS method.

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Response Spectrum Method ReportEarthquake load parameters

Floor wise lumped loads on column / shear wall nodes

Frequency Time Period and % Mass Participation (Eigen value Analysis)

Mode shape coefficient (Eigen Vector)

Scale factor calculation based on static and dynamic base shear calculation

Floor wise distribution of base shear

Distribution of floor base shear to column and shear wall nodes

Contribution of shear walls and column in Eq. resistance of building.

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Response Spectrum Method Report

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Response Spectrum Method Report

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Wind Load Parameter As Per IS 875(part 3):1987

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Wind load generation by Framing Method

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W1

W2

W3

h1

h2

h3

X1 X2

Y1

Y2

W1X

W2X

W3X

K = K1 * K2 * K3

Vz = Vb * K

Pz = 0.6 * Vz * Vz

W1x = [Y1 / 2 * (( h1 / 2) + ( h2 / 2))] * Pz

W2x = [((Y1 / 2 ) + (Y2 / 2 )) * ((h1/ 2) + (h2 / 2))] * Pz

W1y = [X1 / 2 * (( h1 / 2 ) + ( h2 / 2 ))] * Pz

W2y = [((X1 / 2 ) + (X2 / 2 )) * (( h1/ 2) + (h2/ 2 ))] *Pz

Similarly Wind Load on all frames and all floors is calculated

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Report for Wind load generation by Framing Method

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Wind load generation by Notional Method

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Floor2

Floor3

h1

h2

h3

Floor1

X1Length

Y1 W1X

M

X1 / 2

Y1/ 2

W1y

Floor1

K = K1 * K2 * K3

Vz = Vb * K

Pz = 0.6 * Vz * Vz

Total wind load on floor 1- W1x = (Y1 * ( h1 / 2 ) + Y1 * ( h2 / 2)) * Pz

Total wind load on floor 1- W1y = (X1 * ( h1 / 2 ) + X1 * ( h2 / 2)) * Pz Similarly Wind load on floor 2 and 3 is calculated in X and Y direction.This load is transferred to all column and shear wall nodes through diaphragm action.

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Report for Wind load generation by Notional Method

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3D Animation for modes

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Without animation With animation

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Post Processor

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For the desired Load combinations

Shear Force Diagram

Bending Moment Diagram

Axial Force Diagram

Nodal deflections

Support Reactions are displayed.

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Post Processor – Shear Force Diagram

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Post Processor – Bending Moment Diagram

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Post Processor – Deflection Diagram

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Reports in Post Processor

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Reports generated in the Post Processor

Elemental Results

Nodal Reactions

Elemental End Actions

For the desired load combinations

Shear Wall Analysis Report

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Shear Wall Analysis Report

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DesignDesign of R.C.C structural components done using clauses of IS 456:2000, IS 13920

• One Way/ Two Way / Cantilever Slabs • Flats slabs (as per IS coefficient method)• Rectangular, T, L beams• Rectangular, Circular, L shape, T shape columns• Shear wall• Isolated footings (flat, sloping)• Combined footings (including strip footings)• Raft with beam• Piles (Under reamed / End bearing) • Steel Trusses placed on concrete columns

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Slab Design

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Rectangular slab (Two-way, One-way, Cantilever, Flat )Triangular slabTrapezoidal slab (Two-way, One-way)General Slab

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Slab Design

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Slab Auto CAD Output (DXF)

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Slab detailing along with plan Auto generation of section line for longitudinal section of slabUser defined section line for longitudinal section of slabSlab longitudinal section with one direction reinforcementSlab longitudinal section with both direction reinforcementFlat slab detailing

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Auto CAD Output (DXF) drawing settings

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Following things can be done using this dialog box.1. Color of any layer in drawing2. Font of lettering3. Line type 4. Layer on / off5. Can create library of settings to implement in all other projects

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Slab DXF Output

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Slab longitudinal section with one direction reinforcement

Slab longitudinal section with both direction reinforcement

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Flat Slab Detailing

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Slab Reports

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Slab design detail report Slab schedule reportSlab quantity reportFlat slab detail reportFlat slab schedule report

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Slab HTML Reports

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Beam Design

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Linear Curved T-ShapeL-Shape

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Beam AutoCAD Output (DXF)

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Longitudinal section of beams with cross sectionOption for user defined detailingCross section at support and mid spanOption for position of lap, lap –length.Option for position of anchor length Option for Top , bottom, centre flushing of beam in longitudinal section

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Longitudinal Section of Beam with cross section

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Beam Report

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Design detail reportBeam schedule reportBeam capacity report i.e. (Beam capacity at different position)Beam deflection report (with factor and working load )Bar bending scheduleBeam quantityDetail report in PDF format

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Beam HTML Reports

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Beam PDF Reports

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Column Design

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RectangularCircularT-ShapeL-Shape

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HTML Reports Column Design

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Column Design With Detailing

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Column AutoCAD Output (DXF)

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Column cross section detailing of all floor in vertical format

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Column Reports

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Column design detail reportColumn load detail reportGroupWise Column reportFloor Wise Column report

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Column HTML Report

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Shear Wall Design

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StraightL-typeC-type

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Shear Wall Auto CAD Output (DXF)

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Longitudinal and Cross section detailing of Shear wall

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Shear Wall Reports

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Shear Wall design detail reportShear Wall load detail reportShear Wall report GroupWise.Shear Wall report Floor Wise

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Shear Wall HTML Report

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Footing Design

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Individual Footing• Trapezoidal• Flat• Pedestal with flat• Pedestal with Trapezoidal

Combined FootingStrip FootingPile Footing• Driven Cast in -situ• Bored Cast in –situ• Driven Pre Cast • Bored Pre Cast• Under – reamed Bored Compaction • Under – reamed Cast in-situ

Raft Footing (Slab Beam system)

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Footing Design

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Footing Auto CAD Output (DXF)

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Footing Center line with C.G. distancesFooting plan and elevation Pile detailing

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Footing Center line with C.G. distances

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Footing plan and elevation

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Pile Detailing

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Footing Reports

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Footing schedule reportFooting detail design reportFooting load report Footing quantity report

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Footing HTML Reports

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Some Real Life Buildings Designed Using Struds

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Some Real Life Buildings Designed Using Struds

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Some Real Life Buildings Designed Using Struds

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Some Real Life Buildings Designed Using Struds

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Thank You

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