Steel Case Study - Staircase Project
Get to know more about the project below
ABOUT THE PROJECT:
This is a 5-ton staircase requiring 150 man-hours. We modeled and detailed the curved staircase at the lobby of the Moye White project in the SDS/2 department.
SOFTWARE USE:
SDS/2
TONNAGE:
Around 5 Tons
PROJECT DELIVERABLES:
3D model in SDS/2, erection and shop drawings, BOM, JISS/NC files, DXF files, and drawings for location and elevations.
CHALLENGES:
01. The most challenging aspect of this project was modeling the exact client requirements in SDS/2.
02. A spiral staircase was required on the 11th floor, and the client specified that the maximum length for any piece should be 8'-0". The stair would be field assembled.
03. A 12" section of the plate on the side of the stringer was to be left out so that the splice could be field welded after completing the stringer-to-stringer field weld. The plate would then be added to cover the splice.
04. Spiral offset
05. Rolling operations
06. Mid-ordinate
07. Rolling radius of the stringer
08. After applying the field weld splice for the stringer-to-stringer connection, we provided the loose plate profile on both sides of the stringer with the same parameters as the stringer profile.
FLARE AT THE BOTTOM OF STRINGER
CHALLENGES:
01. The most critical task was shaping the plate according to the architect’s design. We needed to bend the plate to match the shape of the flare.
02. We had to ensure that the flare connected smoothly with the main stringer above and at the point where it met the finished floor.
SOLUTIONS:
01. We bent the plate to match the shape of the flare. This ensured that the flare connected smoothly with the main stringer above and at the point where it met the finished floor.
02. We achieved the box flare by adding plate profiles with a rolling radius and cut preparation at the bottom of the stringer where it met the finished floor.
STAIR STRINGER CONNECTION
CHALLENGES:
"At the stair stringer connection to the embed plate, there were specific connection requirements, which included an HSS 8x4x1/2 and 3/8" gusset plates on both sides of the HSS, as shown in the snapshot of the stair stringer-to-embed connection.
SOLUTIONS:
We simplified the connection and created the stair stringer based on these requirements.
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