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The portal, vertical and horizontal bracing shall be proportioned for a wind pressure of 30 lbs. per square foot on the surface of a train averaging 10 square feet per lineal foot, and on twice the vertical surface of one truss. The 300 lbs. pressure per lineal foot due to the train surface shall be treated as a moving load, and the pressure on the trusses as a fixed load. Trusses of less than 200 feet span shall also be proportioned for a pressure of 50 lbs. per square foot when unloaded, and the greatest strain by either method of computation shall in each case be used in determining the sectional areas of the bracing.
The portal, vertical and horizontal bracing shall be proportioned for a wind pressure of 30 lbs. per square foot on the surface of a train averaging 10 square feet per lineal foot, and on twice the vertical surface of one truss. The 300 lbs. pressure per lineal foot due to the train surface shall be treated as a moving load, and the pressure on the trusses as a fixed load. Trusses of less than 200 feet span shall also be proportioned for a pressure of 50 lbs. per square foot when unloaded, and the greatest strain by either method of computation shall in each case be used in determining the sectional areas of the bracing.
Wind Pressure Upon Bridges
Smith, C. Shaler (author)
Transactions of the American Society of Civil Engineers ; 10 ; 139-149
2021-01-01
111881-01-01 pages
Article (Journal)
Electronic Resource
Unknown
| ASCE | 2021
| Engineering Index Backfile | 1881
Wind pressure on bascule bridges
| Engineering Index Backfile | 1950
Closure on Wind Pressure on Bridges
| ASCE | 2021