Week 2 Challenge

1.how to assign circular section to a column

• GO TO PROPERTY
• GO TO DEFINE
• GO TO select circle
• GO TO input dia
• GO TO add
• Assign

2. how to assign unit to staad model file

• While creating a model in the initial stage if we can assign system While working on a model go to geometry-input unt

3.What are the parameters to be specified while using “Bay Frame” option?

Length width and height of frame, number of bays along length and width

4. CODAL STANDERD

• Indian standard
• Europe standard
• American standard

5. How will you specify the design compressive strength for a RCC section?

• GO TO DESIGN
• GO TO GO TO SPECIFY CODE
• GO TO DESIGN PARAMETER
• GO TO SELECT Fc
• Specify Value

2.)

1. State the “Input” steps involved in RCC design

Input involved in rcc design are

• Geometry
• Properties
• Specifications
• Support
• Load and Load combinations
• Design Standards

2.

When the FIXED or FIXED BUT type of support is specified, for those degrees of freedom which are to be treated as fully restrained, STAAD assumes the displacements to be known quantities whose value is zero. Hence, those degrees of freedom are not considered for the stiffness matrix, and their value is not calculated. (For the FIXED BUT support type, if any degrees of freedom are assigned a spring using the KFX thru KMZ terms, those are treated as unknowns and their displacements are calculated).

When the ENFORCED or ENFORCED BUT type of support is specified, for those degrees of freedom which are to be treated as restrained, STAAD assigns a spring with a very high spring stiffness - translational stiff springs for translational restraints, and rotational stiff springs for rotational restraints. Those degrees of freedom which are free to displace are assigned springs of zero stiffness. Hence, for all the 6 degrees of freedom at such supports, the displacements are calculated. The ones which have a stiff spring will end up having a negligible displacement, and those with zero-stiffness-springs will have a displacement based on the structure geometry, properties and loading.When the ENFORCED or ENFORCED BUT type of support is specified, for those degrees of freedom which are to be treated as restrained, STAAD assigns a spring with a very high spring stiffness - translational stiff springs for translational restraints, and rotational stiff springs for rotational restraints. Those degrees of freedom which are free to displace are assigned springs of zero stiffness. Hence, for all the 6 degrees of freedom at such supports, the displacements are calculated. The ones which have a stiff spring will end up having a negligible displacement, and those with zero-stiffness-springs will have a displacement based on the structure geometry, properties and loading.

3.

1. steps involved in analysis of a model using STAAD Pro sequentially.

• Read or study Drawing
• Input Geometry
• Input Properties
• Input Supports
• Run Analysis
• Specify Analysis Type
• Input Design standard
• Inputs Loads and loads Combination
• Verify Result
• Design
• represent Design as documents and drawing.

2. two ways in which a structural framework/model can be created in STAAD Pro software.

• BY coordinate method.
• BY structure wizard method.

3. Elaborate the different support conditions in STAAD Pro.

• FIXED SUPPORT
• PINNED SUPPORT
• FIXED BUT
• ENFORCED
• ENFORCED BUT
• TENSION/COMPRESSION ONLY SPRING.
• MULTILINEAR SPRING
• FOUNDATION.

4. How will you extract the stress distribution for a staircase slab?

• Create the respective nodes of a stair slab
• Assign "plate element" as slab property
• Define load cases and calculate the area load acting on to the Stair slab.
• Apply the load cases and combinations to the plate element as area load
• Mesh the plate element.
• Go for the analysis" Go to post processing mode
• select "plate results-Plote atras contour"
• Under the stress type choose the appropriate stress type 5. Explain the different ways to view SFD & BMD in STAAD Pro

5. Explain the different ways to view SFD & BMD in STAAD Pro.

• After running the analysis of the model, go to "Post.
• processing mode.
• Under the beam results tab, you will see icons to view Bending Moment, Shear force, Axial force, Displacement and Stresses
• You can view the SFD and BMD in the form of graph

Practical
1. Analyze the following structural elements and validate the results
A. Simply Supported Beam
a. A Simply supported beam with two point loads symmetrically placed
b. Span L = 20m
c. Load P = 50kN each
d. Both P located at 5m from each support

.

B.Fixed Beam
a. Span L = 16m
b. Uniformly Distributed Load w=9kN/m