Design atruss bridgethat will be laid on two smooth supports
with a span length(S) of 560 mm .
The bridge must satisfy the following specifications. (Refer to
the figures)
560 mm Length (L) 770 mm
Width (B) 140 mm
Height ofTruss (H) 100 mmfrom the flat surface of the deck to
the top
Depth (D) 50 mmfrom the support surface to the flat surface of
the bridge deck
H + D 150 mm
Weight (W) 1.50 kg
4. TRUSS Bridge Specs Weight, W 1.50 kg H+D150mm Length, L 770
mm Height H 100 mm Span Length, between UTM supports S = 560 mm UTM
Support Provide a 60 mm minimum flat bearing surfaceat the
supported points(see sample bridges) Bridge Deck Width B140 mm Top
of UTM Depth D 50 mm 5. Sample Bridge Design A H L S D 6. Sample
Bridge Design A H+D 150mm 7. Sample Bridge Design B H L S D 8.
Sample Bridge Design B H+D 15 0 mm D 50 mm H 100 mm 9. Other
Requirements
No portion of the bridge structure shall extendbelowthe support
surfaces.
The bridge structure shall besymmetricalabout its longitudinal
and transverse centerlines.
The bridge must have asmooth surfacefor the bridge deck where
atoy vehicle must be able to move.
10. Materials and Construction
The bridge must be constructed using plainpopsicle sticks only
.
The popsicle sticksmay be cut or sandedin any manner.
Onlyall purpose glue(white) must be used to connect the
popsicle sticks.
No other materialsmust be used.
Do not paint, coat or stainthe bridge with any foreign
substance.
11. Sample Bridge L = 700 mm, H = 200 mm, B = 130 mm,W = 1.26 kg
12. Pre-Qualification Screening
REASONS FOR DISQUALIFICATION
Not aTruss Bridge
No flat surface on bridge deck where a toy car may pass
Does not satisfy minimum required bridge span length (S)
Exceeds the maximum total length (L)
Exceeds the maximum height (H)
Exceeds the maximum width (B)
Exceeds the maximum depth (D)
Exceeds H+D limit of 150 mm
Exceeds the maximum weight (W)
Other materials (paint, coating, etc) aside from popsicle
sticks and glue used