Drill - Dimensions tab

Setting	Description
Layout	Selects the general form of the drill hole field. Single ? Allows the position of each hole to be determined individually. Radial ? Arranges the drill holes in a complete or partial circle around the insertion point. Additional input fields are displayed allowing you to define round drill hole fields. Rectangular ? Arranges the drill holes in a rectangular pattern around the insertion point forming rows and columns. In general, drill hole fields are described as follows: `Number1Pitch1, Intermediate Pitch1, Number2Pitch2, Intermediate Pitch2,...`
Shape/X Dir	Enabled for the Rectangular hole layout. Defines the drill hole field pattern in the X-direction of the UCS. Figure 1. Example `31,2,2.5`: `31` defines first three columns of holes with X spacing equal to 1, `2` defines the intermediate X distance between the 3^rd and 4^th column of holes, and `2.5` defines the last two columns of holes with X spacing equal to .5
Cross/Y Dir	Enabled for the Rectangular hole layout. Defines the drill hole field pattern in the Y-direction of the UCS. Figure 2. Example `31,1,2.5`: `31` defines first three rows of holes with Y spacing equal to 1, `1` defines the intermediate Y distance between the 3^rd and 4^th row of holes, and `2.5` defines the last two rows of holes with X spacing equal to .5
Num/Radius	Two value fields are enabled for the Radial hole layout. Num field - Defines the number of drill holes. Radius field - Defines the radius of the circle where the drill holes are arranged around the insertion point.
Area/Start	Two value fields are enabled for the Radial hole layout. Area field - Defines the angular range in which the drill holes are distributed. Start field - Defines the start angle from which the drill holes are distributed.
Diameter	Specifies the bolt diameter. You can select from the predefined list of diameters or enter a value in the field. Tip: Predefined values are saved in an editable file: C:\Program Files\Bentley\ProStructures <product_version>\ProStructures\Default\appl\MechanicalFasteners\Bolts\pro_st3d.hdt.
Workloose	Sets the clearance between bolt diameter and hole diameter. Disabled when Create Threaded Hole is checked. Note: The value you enter here, can defined as a global workloose for bolt diameters. To do this, activate Use Clobal Workloose in the Global Settings Bolts tab.
Slot Length	Defines the length of the slotted hole axis. If Slot Length is set to zero (`0`), a circular hole is created.
Hole Layout	Drill Through ? Holes completely penetrate the material. Drill Blind Hole ? Holes are drilled to a entered depth. Enables the Hole Depth value field. Weld Mark ? Creates small depressions for locating welds.
Hole Depth	Specifies the depth of blind holes. Enabled when the Drill Blind Hole hole type is selected.
Hole Position	Selects the flanges to be drilled. You may either drill holes into the upper or lower flange or into both flanges. Upper Chord ? Holes penetrate only the upper flange. Lower Chord ? Holes penetrate only the lower flange. Both Chords ? Holes penetrate both flanges. Note: Upper/Lower flanges depend on the position of the component part and the active Z-axis.
At Shape Center	When on, the insertion point is perpendicular to the shape center. This ensures symmetrical drill holes relative to the shape center.
Create Threaded Hole	When on, threaded holes are generated. The threaded holes are represented in 2D drawing views.
Use Active Coordinate System	When on, the active coordinate system is used when drilling holes. When off, holes are drilled perpendicular to the surface on which the insertion point is picked. Steel Parts i.e. Shape, Flat and Plate are automatically drilled in the thickness direction irrespective of ACS. There is no need to set ACS before drilling.
Add drills to a part	Select to insert drill holes into a component part. You then select a part, which is then drilled accordingly.
Add drills to multiple part	Select to insert drill holes into several component parts simultaneously. You can select several parts at the same time. The alignment is made based on to the first picked part. Disabled for Single layout.
Copy drills from one/more part to other part(s)	Select to adopt the drill holes of one component part into another one. To do this, first select all the shapes with holes to be transferred and then all the shapes to adopt the holes. This way drill holes from a copied connecting plate may be rapidly transferred to a shape. This option is only available if you didn't select the option Bolted Connection. Tip: Press and hold `Shift` during component part selection, and you can select a component parts in referenced models. Figure 3. Top view (upper) and side view (lower): 1) drilling hole, 2) these profiles are drilled as well, 3) imaginary beam Tip: You can also adopt a drill hole field with simultaneous bolted connections into a new shape so the new shape is drilled first and then bolted. To do this first open the shape properties (right click > Structural Properties), and select the edit tool (magnifying glass) in the Modification > Holes tab. The Drill dialog opens where you can adopt the drill holes with bolts, select (Add parts to a bolting) in Bolts tab.
Preview	Dynamically displays the design of the drill hole field and the insertion point prior to applying it to a shape.