1. Changes of rules from 2014
The following items identify some of major changes from the 2014 rules. Contestants, hosts, and judges are cautioned to read this entire document carefully and understand the changes from previous years.
Construction site is set to be the same as the site of 2014 as shown in Fig. 2.6.
Limitation of bridge height is abolished (2.9).
Deck support is abolished (2.1, 2.3)
Explanation of “member to member connection” is added about screwed connection (2.7)
Scoring factors for overall performance is changed (4.6).
Constructors can use boxes to put fasteners in the staging yards (5.3).
2. Design conditions
2.1 Dimensions and design conditions
The bridge length is between 4000mm and 4400mm, and its span is 4000mm
The bridge is settled on the four abutments (Fig.2.5). The clearance must be over 100mm.
When load tests, two loading plates is placed at the center of the span and a quarter of the span. Bridges must have the space for the loading plate of 600mm x 600mm.(Fig.2.1,2.2) See also 2.3
Loading weight of 150kgf is given to the span center and another 150kgf to the quarter point of the span on the loading plates. The bridge must be able to safely carry the loadings that are in total 300kg.
The span center deflection in the full loading condition is targeted at 6mm (±1mm). If the average deflection value reaches 15mm, the bridge is regarded as collapse.