Week 1 Challenge

Given Data:

• The width of the bridge deck is 10.2m.
• The span of the bridge is 12m.
• Pier size is 2.5 m. diameter
• The seismic zone is Zone IV.
• Wind speed is 47 km/hr.
• Unit weight of soil is 19 kN/m3

Solution:

a) Self-weight of the deck slab= width x thickness x unit wt.

                                            = 10.2 x 0.225 x 19

                                            = 43.605 KN/m

b) Self weight of Box Girder = Area x Unit Weight 

                                         = (Pi x 1/3 x(4.020 x 4.020))+ (4.020x4.020)+4.020x 4.020)x25

                                         = (16.9231+16.1604+16.1604) x 25

                                         = 1231.0975 KN