Cable-stayed bridge 3-span cable-stayed bridge, the loads from the main spans are normally anchored back near the end abutments by stays in the end spans. For more spans, this is not the case and the bridge structure is less stiff overall. This can create difficulties in both the design of the deck and the pylons. Examples of multiple-span structures in which this is the case include Ting Kau Bridge, where additional 'cross-bracing' stays are used to stabilise the pylons; Millau Viaduct and Mezcala Bridge, where twin-legged towers are used; and General Rafael Urdaneta Bridge, where very stiff multi-legged frame towers were adopted.
Pontoon (card game) are regular 52-card decks, minus the ten-spot cards. Cards Two to Nine count 2 to 9 respectively, courts 10 each, Aces 1 or 11, depending on what is better for the hand. Pontoon has similar rules to Spanish 21, with some notable differences, listed below. Despite the player disadvantage of rules 2–9, on average, the house edges for Pontoon are lower than for Spanish 21, because rule 1 is so profoundly player advantageous. The rule differences mean that there are several significant strategy differences between Spanish 21 and Pontoon. In summary, BB+1 is a loss of one bet per box,