University Programs

SSBC Rules and Clarifications

2020 Official Rules

Download the Official Rules for the 2020 Student Steel Bridge Competition.

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Release date: August 14, 2019
Revision 1: August 15, 2019

2020 Official Clarifications

Clarifications are based on the Student Steel Bridge Competition 2020 Official Rules. All clarifications have been reviewed and approved by the Rules Committee.

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Click on each section below to read the posted clarifications.

SSBC Clarifications

1. Mission and Summary

There are no clarifications for Section 1 at this time.

2. Introduction

There are no clarifications for Section 2 at this time.

3. Problem Statement

There are no clarifications for Section 3 at this time.

4. Eligibility

There are no clarifications for Section 4 at this time.

5. Safety

There are no clarifications for Section 5 at this time.

6. Scoring

There are no clarifications for Section 6 at this time.

7. Schedule of Competition

Q7.1. Since there is a north arrow shown on the compass in Drawing 1, does this direction dictate the north side of the bridge for load testing? Katelyn Swinski, University of Florida

A. No. The north side of the bridge for load testing is specified based on a randomizing process, such as a coin flip, that determines the east end of the bridge after the completion of construction. The compass shown in Drawing 1 only applies to construction and is used to identify the location of features in the construction site plan and not the relative sides and ends of the bridge. [Glossary, 7.1, 11.3]

8. Material and Component Specifications

Q8.1. May a spring loaded connection be incorporated into a bridge’s design? Malcolm Bryson, The College of New Jersey

A. No. A spring loaded connection would violate the requirements in specification 8.2.2.1 that a "member shall not have moving or flexible parts". A spring is inherently flexible and the components of a connection are part of a member. [8.2.2.1]


Q8.2. Does more than one member need to fit in the box at the same time when checking for member size violations? Cody L., University of Louisville

A. No. Each member is checked for size violations in the box separately. [8.2, 8.2.2.2]


Q8.3. Is the head of a bolt required to be hexagonal over its full length? Samir S., University of Alabama

A. No. A bolt is only required to have a head, but no restrictions are placed on the shape of the head or whether the shape is constant over the full length of the head. However, modifications to a bolt, including its head, are penalized. [8.2.3]


Q8.4. May steel wire be used as part of the bridge? Neil Isales, Colorado School of Mines & Sam Dodd, Clemson University

A. No. Members that make up the constructed portion of the bridge shall not have moving or flexible parts. [8.1, 8.2.2.1]

9. Structural Specifications

Q9.1. REVISION TO RULES: Should the 5’-0” vertical dimension in the Section A and B drawings on the Bridge Elevation Diagram (DWG 2) extend to the ground in order to comply with Rule 9.3.2? Thomas Sputo, University of Florida

A. Yes, in the initial posting of the Rules (prior to August 15, 2019) available at www.aisc.org/ssbc there was an error made in dimensioning the Section A and B drawings on the Bridge Elevation Diagram. The vertical dimensions shown on the South Side Elevation drawing are correct. As per Rule 9.3.2, no portion of the bridge shall extend more than 5 feet above the ground or river. The Bridge Elevation Diagram (DWG 2) in the Rules at www.aisc.org/ssbc is now correct. [9.3.2]

10. Construction Regulations

There are no clarifications for Section 10 at this time.

11. Load Test Instructions

There are no clarifications for Section 11 at this time.

12. Equipment Provided by Host

There are no clarifications for Section 12 at this time.

13. Interpretation of Rules

There are no clarifications for Section 13 at this time.

14. Judging

There are no clarifications for Section 14 at this time.

15. Appeals

There are no clarifications for Section 15 at this time.

APPENDIX

  • Site Plan Diagram
  • Bridge Elevation Diagram
  • Bridge Plan Diagram
  • Lateral Load Test Plan Diagram
  • Vertical Load Test Plan and Elevation Diagram