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Safety Seat " connection design locks
| A safety seat can be applied for beam-to-column framing situations when the beam's " Section size " is a wide flange, welded plate wide flange or HSS/TS section. You can add a safety seat to an auto standard or user defined connection on the Beam Edit window, without having to make adjustments in setup. |
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" Safety Seat " |
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User Defined Connections: Settings that are locked (
) in a user defined connection file will automatically be locked on a member edit window for which that file is the " Input connection type ." You can, if you so choose, manually lock additional settings on the member edit window, and your changes will be retained, through multiple processes, so long as you do not change to a different connection then switch back to the original user defined connection.
Beam Edit: To change a setting, first set it to locked (
) may be updated, and the "
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Connection design locks :
| Locks not dimensioned or called out on the drawing are marked ( not depicted ). |
Safety Seat
Safety clip angle
Section size ( not depicted ): The size of angle to be used. For example, L4x3x5/16. The long leg on an angle with unequal legs bolts to the beam. The section size you enter here must exist in the local shape file and must be an angle, or validation will not accept your entry. To enter an angle section size, you can type in the section size that you want, or you can press the "file cabinet" browse button (
) and double-click any section that is in the local shape file . The Connection Design Calculations Report and the Expanded Connection Design Calculations reports note the safety seat section size.
Length of angle ( length ): This is the length that the angle material will be cut to. In the example , it is the horizontal distance between the left and right edges of the angle. The Connection Design Calculations Report and the Expanded Connection Design Calculations reports note the safety seat section size.
Top of angle: If " Location of safety erection seat " is ' Bottom ' as in the example , this is the distance from the top of the beam to the top of the safety seat angle, and that distance is, when " Top of angle " is unlocked, equal to the depth of the beam plus the " Safety erection seat gap ." If " Location of safety erection seat " is ' Top, ' then this is the distance from the top of the beam to the bottom of the safety seat angle and that distance, by default, is 0 (zero).
Bolts on beam
Bolt diameter ( not depicted ): You can either type in any diameter (inches or mm), or you can select a bolt diameter from the combo box (
). The diameters that are listed in the combo box come from Home > Project Settings > Job > Bolt Settings > the " Available bolts " list. The bolt diameter entered here (together with the " Hole type " entered below) set the diameter of holes the bolts go into. The Connection Design Calculations Report and the Expanded Connection Design Calculations reports note the safety seat bolt diameter.
Hole type ( not depicted ): Standard round or Short slot or Oversized or Long slot or User slot #1 or User slot #2 . The hole type selected here, together with the " Bolt diameter " entered above, set the diameter of holes on the leg of the angle that field bolts to the beam.
Distance to 1st row ( 1st ): The distance from the column work line to the center of the row of holes on the angle leg that field bolts to the top/bottom flange of the supported beam. In the example above, the angle bolts to the beam's bottom flange. This distance is measured parallel with the work line of the beam and is horizontal if the column is perfectly vertical. Changing the " Distance to 1st hole " moves the holes in the angle leg but does not move the angle.
Flange gage / 2 ( ga ): Half the distance (center to center) between the two holes that are in the leg of the angle that bolts to the beam. The distance is measured perpendicular to the work line of the beam and is a horizontal distance if the column is perfectly vertical. The unlocked (
Welds
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You get the following " Welds " option in this leaf only if this safety seat's " Attachment " is set to ' Welded ' in the beam end's " Connection type " leaf.
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To column size ( not depicted ): The weld size for shop welding the safety erection seat angle to the column.
Bolts on column
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You get " Bolts on column " options in this leaf only if this safety seat's " Attachment " is set to ' Bolted ' in the beam end's " Connection type " leaf.
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Bolt diameter ( not depicted ): You can either type in any diameter (inches or mm), or you can select a bolt diameter from the combo box (
Hole type ( not depicted ): Standard round or Short slot or Oversized or Long slot or User slot #1 or User slot #2 . The hole type selected here, together with the " Bolt diameter " entered above, set the diameter of holes on the leg of the angle that field bolts to the supporting column.
Distance to 1st row ( vert to 1st ): The distance from the heel of the angle to the center of the row of two holes in the angle leg that bolts to the column (see example ). This distance is positive (+) for a bottom angle seat, negative for a top angle seat. It is a vertical distance if the column is perfectly vertical.
Flange gage / 2 ( g ): The distance (center to center) between the two holes in the leg of angle that bolts to the column. The unlocked (
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