The wind loads for longitudinal bracing are to be taken as seven tenths (0.7) of those for the transverse bracing.

For viaducts carrying electric trains, the wind loads are to be taken from the Specifications for Railroad Structures.

All wind loads are to be treated as moving loads.

INDIRECT WIND LOAD OR TRANSFERRED LOAD.

See Specifications for Railroad Structures.

TRACTION LOAD.

See Specifications for Railroad Structures.

CENTRIFUGAL LOAD.

See Specifications for Railroad Structures.

EFFECTS OF CHANGES OF TEMPERATURE.

See Specifications for Railroad Structures.

INTENSITIES OF WORKING-STRESSES.

See Specifications for Railroad Structures.

BEARINGS UPON MASONRY.

See Specifications for Railroad Structures.

REVERSING-STRESSES.

See Specifications for Railroad Structures.

NET SECTION.

See Specifications for Railroad Structures.

BENDING MOMENTS ON PINS.

See Specifications for Railroad Structures.

COMBINATIONS OF STRESSES.

The Specifications for Railroad Structures under this heading are to be followed, with this exception: in bridges and viaducts that do not carry trains, the live load and the wind load are assumed not to act simultaneously.