Source: https://www.quantumsteeldesign.com/videos/standard-oversized-and-slotted-bolt-holes/ Structural bolting explainer · 0:50 # Standard, Oversized, and Slotted Structural Bolt Holes Explained Understand standard, oversized, short-slotted, and long-slotted structural bolt holes and why type, size, orientation, joint condition, washers, and inspection matter. What you will learn - TYPE: Standard, oversized, short slot, or long slot. - SIZE: Match bolt and governing requirement. - ORIENT: Slot direction can be significant. - JOINT: Condition and faying surfaces still control. Published September 3, 2026 [Watch on YouTube ↗](https://www.youtube.com/watch?v=YxjqCed2BMM) [Watch the Short ↗](https://www.youtube.com/shorts/sHfAikTj9Do) Practical context ## Why structural bolt-hole type and orientation are connection information Structural bolting requirements distinguish standard, oversized, short-slotted, and long-slotted holes because fit, movement, bearing, slip behavior, washers, and installation requirements can differ. The design documents, project specifications, and governing RCSC and AISC requirements control permitted hole types and their use. Continue with the data ### Structural steel bolting learning path Move from the video explanation to the related reference, dimensions, properties, tools, and learning context. [Open related reference](https://www.quantumsteeldesign.com/learning-hub/structural-steel-bolting/) Companion reading and practice ## What is missing from a hole description? A training detail identifies a slot, but its orientation is unclear. Entering only a generic slot type in a model would leave important geometry unresolved. Locate the governing hole type, dimensions, orientation, and applicable joint requirements in the project documents. Check the specified standards and approval requirements before preparing the detail. A convenient model default or a hole used on another job is not a source for this connection. ### Try it with a sample Prepare a question that names the member, detail, revision, and missing slot direction. [Draft a hole-information question](https://www.quantumsteeldesign.com/rfi-log/) Examples are fictional learning exercises. This companion text adds context to the video; the transcript below records the narration. Primary sources ## References and further reading - [RCSC specifications and supporting documents](https://www.boltcouncil.org/) - [AISC standards and specifications](https://www.aisc.org/aisc/publications/current-standards/) Use the edition and requirements adopted for the project. These references support further reading; a short video does not reproduce the complete standards. Published by Quantum Steel Design. [Sources and editorial approach](https://www.quantumsteeldesign.com/about/#editorial-approach) · [Report a correction](https://www.quantumsteeldesign.com/contact/) · Companion guide updated September 28, 2026. Accessible transcript ## Standard, oversized, and slotted bolt holes transcript The visible transcript makes the video content available to people and search systems without requiring playback. - Structural bolt holes can be standard, oversized, short-slotted, or long-slotted, and those labels matter. - A standard hole is the baseline type for the bolt size under the governing requirements. - Oversized and slotted holes add clearance or directed movement, but their permitted use is not automatic. - For a slotted hole, the direction of the slot can change how the connection behaves and must be shown clearly. - Hole type also connects to joint condition, faying surfaces, washers, installation method, and inspection. - AI can flag mismatched notes or geometry, but it cannot authorize a different hole type. - Use the current design documents, project specifications, RCSC requirements, and qualified review. - Learn the complete structural bolting workflow at Quantum Steel Design. Keep watching ## More structural steel detailing and fabrication videos. [View the complete video library](https://www.quantumsteeldesign.com/videos/) [11:50](https://www.quantumsteeldesign.com/videos/steel-project-handoff-release-control/) September 27, 2026Long-form field guide ## Steel Project Handoff: Submittals, Revisions, and Release Control Coordinate steel submittals, review comments, RFIs, revisions, partial releases, and fabrication data with a clear source baseline and documented handoff. [Watch with transcript](https://www.quantumsteeldesign.com/videos/steel-project-handoff-release-control/) [Watch on YouTube ↗](https://www.youtube.com/watch?v=21pkU1yMoZ8) [11:30](https://www.quantumsteeldesign.com/videos/structural-steel-takeoff-workflow/) September 27, 2026Long-form field guide ## Structural Steel Takeoff: From Drawings to a Defensible Material List Build a traceable structural steel takeoff: define scope, count members, label lengths and units, calculate nominal weight, document allowances, and compare revisions. [Watch with transcript](https://www.quantumsteeldesign.com/videos/structural-steel-takeoff-workflow/) [Watch on YouTube ↗](https://www.youtube.com/watch?v=Dv-RwOBNf-Y) [0:52](https://www.quantumsteeldesign.com/videos/checks-before-exporting-steel-cnc-data/) September 3, 2026Steel CNC data checklist ## Four Checks Before Exporting Structural Steel CNC Data Learn four checks before exporting structural steel CNC data: source and revision, geometry, machine and process assumptions, and documented human release approval. [Watch with transcript](https://www.quantumsteeldesign.com/videos/checks-before-exporting-steel-cnc-data/) [Watch Short ↗](https://www.youtube.com/shorts/iI3P-6_PXGI)