You can query the punching shear calculations by right-clicking on a column that has punching shear results and then select "Punching Shear Results" from the popup menu that appears. A scrollable results form appears that displays a useful summary of the punching shear calculations for the column you selected.
Some of the terms in the query form that could need further explanation are as follows:
Governing column = The column below if it supports the slab or the column above if it is supported by the slab (eg. a raft footing).
Punching shear perimeter = The total length of the punching shear perimeter at d/2 away from the column or drop panel boundary.
Average effective depth = The average effective depth of the slab or drop panel around the punching shear perimeter. If the slab is supported by a column below then the effective depth is measured from the bottom of the slab/drop to the centerline of the top bars or if the slab supports a column above (eg. a raft footing) then the effective depth is measured from the top of the slab to the centerline of the bottom bars.
AS3600 specific terms
βh = Ratio of the longest to shortest distances across the effective loading area, where the effective loading area is the convex hull of the governing column cross section. The longest and shortest distances are always normal to each other. Note that the "convex hull" of a cross section may be visualized as the shape assumed by a rubber band that has been stretched around the cross section.
ay, az = The overall dimensions of the punching shear perimeter, where ay is the dimension normal to the column's local y-axis and is used with My*, and az is the dimension normal to the column's local z-axis and is used with Mz*.
V*, My*, Mz* = The shear force and bending moments transferred between the slab and column.
The punching shear is calculated as per AS3600:2018 clause 9.3.4(1).
IS456 specific terms
βc = Ratio of the shortest to longest distances across the effective loading area, where the effective loading area is the convex hull of the governing column cross section (ie. the inverse of the AS3600 βh term). The longest and shortest distances are always normal to each other. Note that the "convex hull" of a cross section may be visualized as the shape assumed by a rubber band that has been stretched around the cross section.
Iy, Iz, Iyz = The moments of inertia and product of inertia of the punching shear surfaces.
V, My, Mz = The shear force and bending moments transferred between the slab and column.
αy, αz = The fraction of the bending moments transferred between the slab and column that are used in the punching shear checks and which are calculated as shown below, where a1 is the overall dimension of the critical section for shear in the direction in which moment acts and a2 is the overall dimension of the critical section for shear transverse to the direction in which moment acts.
The punching shear is calculated as per IS456:2000 section 31.6.
While the form is open, you can simply click on any other columns to have their punching shear calculations displayed.
For further information about concrete slab design and punching shear refer to "Punching shear".