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    By James Philip

    When placing a curved wall under stairs in Revit, the option to edit profile is not available as in straight walls, when the wall is selected. See Fig 1.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_1.JPG

    One way to trim the top of the wall to the underside of the stair is to create a void to trim it. This is done using model in place.

    On the Architecture tab select the drop-down arrow beneath component and choose Model in place. See Fig 2.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_2.JPG

    The Family Category and Parameters dialogue appears. Choose walls and select OK. See Fig 3.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_3.JPG

    Name the object walls 1 and select OK. See Fig 4.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_4.JPG

    You are now in the modelling environment, so select void forms, then Void sweep from the drop-down list. See Fig 5.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_5.JPG

    Choose the pick path button and select the underside of the stringer for the 3D path. See Figs 6 & 7.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_6.JPG

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_7.JPG

    Select the green tick to accept the 3D path. Choose the modify sweep tab. Then pick the edit profile button. See Fig 8.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_8.JPG

    Choose the viewer button, this will make creating the profile a lot simpler. See Fig 9.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_9.JPG

    In the viewer draw your profile as shown. Make sure it is wide and tall enough to cut away the top of the wall. Then select the green tick and close the Viewer. See Fig 10.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_10.JPG

    Select the Modify Sweep tab and pick the green tick. See Fig 11.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_11.JPG

    On the ribbon pick the cut tool, then select the wall and then the void. See Fig 12.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_12.JPG

    The wall is trimmed, so select the green tick to complete the process. See Fig 13.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_13.JPG

    When placing a curved wall under stairs in Revit, the option to edit profile is not available as in straight walls, when the wall is selected.  See Fig 14.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_14.JPG

    One way to trim the top of the wall to the underside of the stair is to create a void to trim it. This is done using model in place.

    On the Architecture tab select the drop-down arrow beneath component and choose Model in place. See Fig 15.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_15.JPG

    The Family Category and Parameters dialogue appears. Choose walls and select OK. See Fig 16

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_16.JPG

    Name the object walls 1 and select OK. See Fig 17.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_17.JPG

    You are now in the modelling environment, so select void forms, then Void sweep from the drop-down list. See Fig 18.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_18.JPG

    Choose the pick path button and select the underside of the stringer for the 3D path. See Figs 19 & 20.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_19.JPG

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_20.JPG

    Select the green tick to accept the 3D path. Choose the modify sweep tab. Then pick the edit profile button. See Fig 21.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_21.JPG

    Choose the viewer button, this will make creating the profile a lot simpler. See Fig 22.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_22.JPG

    In the viewer draw your profile as shown. Make sure it is wide and tall enough to cut away the top of the wall. The select the green tick and close the Viewer. See Fig 23.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_23.JPG

    Select the Modify Sweep tab and pick the green tick. See Fig 24.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_24.JPG

    On the ribbon pick the cut tool, then select the wall and then the void. See Fig 25.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_25.JPG

    The wall is trimmed, so select the green tick to complete the process.  See Fig 26.

    Revit_2020_-_Trimming_Walls_to_the_Underside_of_Curved_Stairs_Using_Voids_-_26.JPG