Add strands in the order shown on the Slab Beam Non-Standard Design (PSBND) standard drawing.

Debond strands in 3 ft. increments at beam ends if necessary to control stresses at release. If the strand size is larger than 0.6” diameter, base section increments on Article 5.9.4.3.3.

Debonded strands must conform to Article 5.9.4.3.3 except as noted below:

Debond no more than 50% of the total number of strands.
Debond no more than 50% of the number of strands in that row.
Replace Restriction B with, not more than 50% of the debonded strands, or 10 strands, whichever is greater, shall have the debonding terminated at any section, where section is defined as an increment (e.g., 3 feet, 6 feet, 9 feet).
Do not design for Restriction E.
Replace Restriction G with, the maximum debonding length is the lesser of: (a) one-half the span length minus the maximum development length; (b) 0.2 times the beam length; or (c) 15 ft.

Calculate required stirrup spacing for #4 Grade 60 bars according to Article 5.7. Change stirrup spacing as shown on relevant standard drawings only if analysis indicates inadequacy of the standard design.

TxDOT standard slab beams satisfy Article 5.7.4 and Article 5.9.4.4.

Compute deflections due to slab weight and composite dead loads assuming the beam and slab to have the same modulus of elasticity. Assume $E_c$
= 5,000 ksi for beams with $f_c^{\text{'}}$
ksi. Show predicted slab deflections on the plans even though field experience indicates actual deflections are generally less than predicted. Use the deflection due to slab weight only times 0.8 for calculating haunch depth.

See Section 4, Pretensioned Concrete I-Girders for other design criteria.