Distribute the weight of one railing to no more than three beams, applied to the composite cross section.

Use section properties given on the Prestressed Slab Beams standard drawings. For the composite section, use gross section properties.

Composite section properties may be calculated assuming the beam and slab overlay have the same modulus of elasticity (for beams with $f_c^{\text{'}}$
<. 8.5 ksi). Do not include haunch concrete placed on top of the beam when determining section properties. Section properties based on final beam and slab modulus of elasticity may also be used; however, this design assumption must be noted on the plans.

Live load distribution factors for all beams, both moment and shear, must conform to Table 4.6.2.2.2b-1, using cross section (g), if the beams are connected only enough to prevent relative vertical displacement at their interfaces. This is called S/D distribution.

Do not apply the skew correction factors for moment as suggested in Article 4.6.2.2.2e nor for shear as suggested in Article 4.6.2.2.3c.

Do not take the live load distribution factor for moment or shear as less than the number of lanes divided by the number of girders, including the multiple presence factor per Article 3.6.1.1.2.