Substructure Help

Lane Loads

Case 1:

The first position is obtained by placing the left edge of the lane load adjacent to the left curb. The next position is obtained by moving the centerline of the lane 10 feet to the right so that the left edge is adjacent to the right edge of the previous position. This process is repeated until there is no more available space to place another lane load between the right edge of the last position and the face of the right curb.

Figure 1. Lane Loads - Case 1

Case 2:

Next, the right edge of the lane load is placed adjacent to the right curb. Additional positions are obtained by moving the centerline of the lane 10 feet to the left so that the right edge is adjacent to the left edge of the previous position. This process is repeated until there is no more available space to place another lane load between the left edge of the last position and the face of the left curb.

Figure 2. Lane Loads - Case 2

Case 3:

Next, the left edge of the lane is placed directly on each of the bearings and additional positions are created by moving the centerline of the lane 10 feet to the left and to the right of the previous positions until there is no more available space to place another lane between the left or right edge of the last position and the face of either curb.

Figure 3. Lane Loads - Case 3

Case 4:

Next, the right edge of the lane is placed directly on each of the bearings and additional positions are created by moving the centerline of the lane 10 feet to the left and to the right of the previous positions until there is no more available space to place another lane between the left or right edge of the last position and the face of either curb.

Figure 4. Lane Loads - Case 4

Case 5:

Next, the centerline of the lane is placed directly on each of the bearings and additional positions are created by moving the centerline of the lane 10 feet to the left and to the right of the previous positions until there is no more available space to place another lane between the left or right edge of the last position and the face of either curb.

Figure 5. Lane Loads - Case 5

Case 6:

Lastly, the centerline of the lane load is placed coincident with the centerline of the each of the columns and additional positions are created by moving the centerline of the lane 10 feet to the left and to the right of the previous positions until there is no more available space to place another lane load between the left or right edge of the last position and the face of either curb.

Figure 6. Lane Loads - Case 6