a. The bridge is in Banff, Alberta within Canada’s first national park (Structure Craft, 2013). It was completed in 2013 by Structure Craft Builders and is one of the longest timber bridges in the world, achieving a span of 80m within its total length of 113m (Structure Craft, 2013).
b. Principle Structural System
The principle structural system is comprised of drilled piers to support 40m long glulam girders cantilevered (Structure Craft, 2013). The elevation of the bridge displays stepped glulam girders to follow the flow of forces (Structure Craft, 2013). These engineered timber members range from 2.6m at the piers and 0.9m at the centre of the span (Structure Craft, 2013). In addition to the engineered timber, tensioned rods tie the cantilevered glulam to concrete abutments at either end of the bridge (Structure Craft, 2013).
c. Load Paths
The image below displays the varying load paths of the Bow River Pedestrian Bridge. The red arrows represent the permanent (dead) load which …show more content…
Although due to the long, slender design of this bridge, it is susceptible to vertical and lateral movement from high numbers of pedestrians (Structure Craft, 2013).
For this report, a cross wind load will be assumed. During a cross wind load, the Bow River Bridge has been designed to allow lateral and vertical movement, this results in any excessive loads to alter the shape of the bridge to withstand great forces (Structure Craft, 2013). The image below shows how the wind load would be transferred to the footings in high winds.
a. Not only is the Bow River Bridge functional it also enhances the backdrops of mountain ranges and river within the Canadian Rocky Mountains. That is the beauty of timber, and this staggered design. It blends with the natural landscape allowing it to remain a somewhat subtle piece. The design process was heavily influence by the genius
b. Principle Structural System
The principle structural system is comprised of drilled piers to support 40m long glulam girders cantilevered (Structure Craft, 2013). The elevation of the bridge displays stepped glulam girders to follow the flow of forces (Structure Craft, 2013). These engineered timber members range from 2.6m at the piers and 0.9m at the centre of the span (Structure Craft, 2013). In addition to the engineered timber, tensioned rods tie the cantilevered glulam to concrete abutments at either end of the bridge (Structure Craft, 2013).
c. Load Paths
The image below displays the varying load paths of the Bow River Pedestrian Bridge. The red arrows represent the permanent (dead) load which …show more content…
Although due to the long, slender design of this bridge, it is susceptible to vertical and lateral movement from high numbers of pedestrians (Structure Craft, 2013).
For this report, a cross wind load will be assumed. During a cross wind load, the Bow River Bridge has been designed to allow lateral and vertical movement, this results in any excessive loads to alter the shape of the bridge to withstand great forces (Structure Craft, 2013). The image below shows how the wind load would be transferred to the footings in high winds.
a. Not only is the Bow River Bridge functional it also enhances the backdrops of mountain ranges and river within the Canadian Rocky Mountains. That is the beauty of timber, and this staggered design. It blends with the natural landscape allowing it to remain a somewhat subtle piece. The design process was heavily influence by the genius