A prismatic girder has constant section properties.

Girder Properties

Define the girder section properties. Use the drop down list to select a girder or select "Defined girder properties" to enter the girder properties.

Item	Description
Height	Overall height
Wtf	Top width
Wbf	Bottom width
Area	Cross sectional area
Ix	Moment of inertia about the horizontal centroidal axis
Iy	Moment of inertia about the vertical centroidal axis
Yt	Location of the centroid measured down from the top of the girder
L	Girder length

Dead Loads

The self weight of the girder is computed from the section properties and the unit weight with reinforcement. Additional dead loads can be modeled.

Item	Description
Unit Weight	Unit weight of concrete used to compute modulus of elasticity
Unit Weight with Reinforcement	Unit weight of concrete and reinforcement. Used to compute dead load.

Additional Dead Loads

Additional dead loads are modeld as discrete point loads. These loads could represent the weight of cast in place diaphragms.

Use the [+] and [-] buttoms to add and delete additional dead loads.

Item	Description
X	Location of the load measured from the left end of the girder
P	Magnitude of the load (positive values for downward/gravity loads)

Wind Characteristics

Enter the girder drag coefficient. This coefficient is used for computing wind pressure loading per LRFD 3.8.3.1. The Florida Department of Transportation has undertaken a significant amount of research to establish the following guidance for horizontal drag:

Cd = 2.2 for I-shaped girders with no deck forms in place
Cd = 1.5 for U-shaped girders with no deck forms in place

Prestress Arrangement

The prestressing may be defined with a Simplified or Detailed arrangement. A simplified arrangement consists of parameters that describe the location of the prestressing force as well as a prestress transfer length. The prestressing force is defined on the Lifting and Hauling views. In a detailed arrangement, the location and magnitude of the prestressing force is defined at discrete locations along the girder. This is accomplished in the Lifting and Hauling views.

Use the drop down list to select the Prestressing Arrangement

Item	Description
Simplified	A simplified prestressing arrangement will be used
Detailed	A detailed prestressing arrangement will be used

Simplifed Arrangement Parameters

Item	Description
Prestress Transfer Length	Length from the ends of the girder that the prestress force is increased from zero to its full value
Ys (E)	Location of the straight strands
Yh1 (Fo)	Location of the harped strands at the end of the girder
Yh2 (Fcl)	Location of the harped strands at the harp point
Harp Point	Location of the harped point as a fraction of the girder length. Enter a value less than or equal to 0.5
Yts	Location of the temporary strands

NOTE: E, Fo, and Fcl are dimensions found on WSDOT standard girder sheets.