#Etabs 9.7.4 draw section cuts how to
#Etabs 9.7.4 draw section cuts code

#Etabs 9.7.4 draw section cuts code

This section of the ACI code is really intended for elevated slabs. makes no endorsement on what methods would be most appropriate. The setting of the design strip widths is truly a matter of engineering judgment. Similarly, if the strip is set too small, then the effect of stress risers in the FEM analysis will be over estimated and the design will be over conservative. This would result in unconservative design moments and shears. If the width is set too large, then the program will average out the moments and shears over too wide of a region. One of the most important design considerations is how wide to set the Design Strip.

Design cuts that are automatically created will be shown as orange dashed lines (as opposed to green if you draw a design cut manually.)

A design strip will be shown graphically with a thick orange boundary line.

You will need to double click the last point to indicate that the current design strip is finished.

After you press the вЂњApplyвЂќ button on the Create Design Strips dialog, your cursor will change to look this, and you can then begin to click points to define the boundary of your design strip.

If creating more than one strip with different properties, it is often convenient to check the вЂњKeep this dialog open?вЂќ checkbox so the dialog stays open as you draw your design strips. The design rule sets the various parameters needs to calculate the required area of steel and the reinforcing bar size and number. You may choose to increase or decrease the number of design cuts that will be created automatically within the design strip, and you can choose which design rule to apply to all the design cuts within the strip.

You can modify the direction of the reinforcing bars within the strip.

Once you have clicked the Design Strip button, you will see the following dialog box so you can make some choices about the design properties before you begin drawing.

Note that a Model view window must be the active window to see the toolbar buttons on the left side of the screen.

Click on the button which is located on the lower left side, below the Selection Toolbar.

#Etabs 9.7.4 draw section cuts how to

How to Create Design StripsДesign strips may be defined either before or after a solution is performed. You can also see a detail report for each of these design cuts. Therefore, it is critical that good engineering judgment is used to determine an appropriate width for setting the design strips / design cuts. No attempt is made to design for local stress or force risers within the width of the design cut. The moment demand at an individual design cut is defined as the total moment over the width of the design cut. The same number and size of reinforcing bars will be used for the entire Design Strip, so this should be considered when defining the boundary for a particular strip. The results for the entire Design Strip will be governed by the maximum moment demand at an individual design cut. If the moment varies along the length of a Design Strip then the individual design cuts will show a varying amount of moment demand at each section. Section cuts may be drawn within the graphical user interface by selecting Draw > Draw Section Cut.Slabs - Design Strips Slabs - Design StripsДesign Strips are used to create regions within a slab where design cuts will automatically be created and flexural reinforcing bars will designed. Draw the section cut within the graphical user interface As shown in Figure 2, the Section Cut Group must include All joints for which forces should be summed.ДЇigure 3 - Section-cut group 3. Here, section-cut forces represent the sum of joint forces within those frame, shell, and link objects which are included in the group. Section cuts may also be defined by specifying a group of structural objects. Once analysis is run, section-cut forces are available in tabular format by selecting Display > Show Tables > Analysis Results > Structure Output > Other Output Items > Table: Section Cut Forces - Analysis, as shown in Figure 2:ДЇigure 2 - Section-cut forces 2.For assistance with additional fields on this form, press F1 to access Context Help.Select Quadrilateral Cutting Planes, then define the plane by specifying its joint coordinates, as shown in Figure 1:ДЇigure 1 - Define a quadrilateral cutting plane.Launch the Section Cut Data form by selecting Define > Section Cuts > Add Section Cut.The procedure for defining a quadrilateral cutting plane is as follows:

Joint forces are then summed about the location specified as the Results Reported at the Location parameter.

Located on the specified side of the section cut.

Within structural objects entirely cut by the quadrilateral plane and.

Section-cut forces are the sum of joint forces for all joints which are: