QUESTIONNAIRE FOR MID-ATLANTIC REGION PCEF ABOUT

DESIGN CONSIDERATIONS FOR PRESTRESSED CONCRETE MEMBERS

State: \_\_\_\_\_\_\_\_\_\_\_\_\_\_

1\. Type of strands patterns at end of girders used within your state:

> Check ALL that apply:

  ------------------------------------- ---------------- ----------------
                                        Allow in current Have used in the
                                        specifications   past 10 years

                                                         

  Straight                                               

  Straight and Draped                                    

  Straight with unbonding                                

  Combination: Straight, draped and                      
  unbonded                                               
  ------------------------------------- ---------------- ----------------

> DESCRIBE CRITERIA:

2\. Type of strands used within your state:

> Check those that apply:

+-------------------------------------+---------------+---------------+
|                                     | Allow in      | Have used in  |
|                                     | current       | the past 10   |
|                                     | s             | years         |
|                                     | pecifications |               |
+-------------------------------------+---------------+---------------+
| ½ " diameter strands -- low         |               |               |
| relaxation                          |               |               |
+-------------------------------------+---------------+---------------+
| ½ " diameter strands -- stress      |               |               |
| relieved                            |               |               |
+-------------------------------------+---------------+---------------+
| ½ " diameter strands (Special 0.167 |               |               |
| in^2^)                              |               |               |
|                                     |               |               |
| > low relaxation                    |               |               |
+-------------------------------------+---------------+---------------+
| ½ " diameter strands (Special 0.167 |               |               |
| in^2^)                              |               |               |
|                                     |               |               |
| > stress relieved                   |               |               |
+-------------------------------------+---------------+---------------+
| 0.6" diameter strands -- low        |               |               |
| relaxation                          |               |               |
+-------------------------------------+---------------+---------------+
| 0.6" diameter strands -- stress     |               |               |
| relieved                            |               |               |
+-------------------------------------+---------------+---------------+
| 7/16" diameter strands -- low       |               |               |
| relaxation                          |               |               |
+-------------------------------------+---------------+---------------+
| 7/16" diameter strands -- stress    |               |               |
| relieved                            |               |               |
+-------------------------------------+---------------+---------------+

> DESCRIBE CRITERIA:

3\. Standard spacing of strands used in standards in your state:

a.  2" spacing for ½" strands Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

b.  2" spacing for 0.6" strands Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

c.  Other Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

> DESCRIBE CRITERIA:

3.  Does the specification and/or state practices limit the amount of
    unbonding strands allowed at specific locations in the beams?

    a.  25% of strands Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

    b.  25% at ⅓, ⅓, and ⅓ \* Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

    c.  25% at ½, and ½ \*\* Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

    d.  Other Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

> \* 25% with maximum of ⅓ of debonded strands terminating at each
> location.
>
> \*\* 25% with maximum of ½ of debonded strands terminating at each
> location.
>
> DESCRIBE CRITERIA:

4.  Does the specification and/or state practices limit the location of
    unbonded strands?

    a.  Interior strands only Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

    b.  Interior strands distributed uniformly Yes \_\_\_\_\_\_ No
        \_\_\_\_\_\_

    c.  Int. & Ext. strands distributed uniformly Yes \_\_\_\_\_\_ No
        \_\_\_\_\_\_

    d.  Other Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

> DESCRIBE CRITERIA:

5.  What is the allowable tension stress in the precompressed tension
    zone (i.e., at or very near midspan at the bottom of the girder)?

    a.  Zero tension Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

    b.  3\*sqrt(f'c) Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

    c.  6\*sqrt(f'c) Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

> DESCRIBE CRITERIA:

6.  Does the amount of allowable tension in the precompressed tension
    zone differ according to environment?

  ---------------------- ---------------- ------------------ ------------------
  **Environment Type**   **Zero Tension** **3\*sqrt(f'c)**   **6\*sqrt(f'c)**

  Normal Environment                                         

  Severe Environment                                         

  Other                                                      
  ---------------------- ---------------- ------------------ ------------------

> DESCRIBE CRITERIA:

7.  What criteria (if any) does the state have for determining the
    spacing of diaphragms?

    a.  Midspan and/or maximum of 40' Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

    b.  Midspan and/or maximum of 60' Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

    c.  Midspan and/or maximum of 80' Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

> DESCRIBE CRITERIA:

8.  What type of stirrup reinforcement is specified/allowed to minimize
    tripping hazards on the top of the prestressed concrete girder?

    a.  Pin type stirrups Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

    b.  2 - 90º type stirrups Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

    c.  Bulb Tee with top tie bar w/ 90º bend Yes \_\_\_\_\_\_ No
        \_\_\_\_\_\_

    d.  Bulb Tee with top tie bar w/180º bend Yes \_\_\_\_\_\_ No
        \_\_\_\_\_\_

    e.  Other Yes \_\_\_\_\_\_ No \_\_\_\_\_\_

> DESCRIBE CRITERIA:

Contact Person: Rodolfo (Rudy) F. Maruri

> Virginia Division
>
> Assistant Division Bridge Engineer

Telephone No.: (804) 775-3361

Email Address: rodolfo.maruri@fhwa.dot.gov

> AND/OR
>
> Claude S. Napier
>
> Virginia Division
>
> Division Bridge Engineer

Telephone No.: (804) 775-3363

Email Address: claude.napier@fhwa.dot.gov

**Thank you for completing the questionnaire. A summary of compiled
results will be presented at the PCEF Committee meeting**