Retrospective Evaluation of Cured-in-Place Pipe - (NEPIS)(EPA ...
Retrospective Evaluation of Cured-in-Place Pipe - (NEPIS)(EPA ...
Retrospective Evaluation of Cured-in-Place Pipe - (NEPIS)(EPA ...
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Table 4-14. Geometric Data for Flexural Test Specimens (Denver 48-<strong>in</strong>. Downstream Sample)<br />
Sample Span Dimension Moment <strong>of</strong> Inertia<br />
ID (<strong>in</strong>.)<br />
(<strong>in</strong>. 4 W (<strong>in</strong>.) D (<strong>in</strong>.)<br />
)<br />
1 4 0.495 0.523 0.005901<br />
2 4 0.512 0.500 0.005333<br />
3 4 0.500 0.500 0.005208<br />
4 4 0.496 0.532 0.006224<br />
5 4 0.517 0.513 0.005816<br />
Us<strong>in</strong>g the <strong>in</strong>formation <strong>in</strong> Table 4-14, the follow<strong>in</strong>g figures were drawn:<br />
• Load data and deflection data at mid-po<strong>in</strong>t for all samples.<br />
• Flexural stress and stra<strong>in</strong> graphs for all samples.<br />
Peak load, peak shear stress, and flexural modulus were obta<strong>in</strong>ed from the s<strong>of</strong>tware ‘MtestW’ that<br />
operates the ADMET eXpert 2611 UTM. Peak bend<strong>in</strong>g stress is calculated from the peak load value<br />
achieved us<strong>in</strong>g the follow<strong>in</strong>g formula.<br />
where<br />
= Bend<strong>in</strong>g stress<br />
P = Peak load<br />
L = Span length<br />
D = Depth <strong>of</strong> the specimen<br />
I = Moment <strong>of</strong> <strong>in</strong>ertia <strong>of</strong> area<br />
Table 4-15. Flexural Test Results for Denver 48-<strong>in</strong>. Downstream Sample<br />
Location on<br />
<strong>Pipe</strong><br />
Peak Load<br />
(lb)<br />
Peak Bend<strong>in</strong>g<br />
Stress<br />
(psi)<br />
52<br />
Peak Shear<br />
Stress<br />
(psi)<br />
Flexural<br />
Modulus<br />
(psi)<br />
1 155 6,873 599 340,145<br />
2 158 7,418 618 290,124<br />
3 154 7,371 614 314,932<br />
4 161 6,867 609 282,343<br />
5 150 6,628 567 287,254<br />
Average and<br />
Std. Dev.<br />
- 7,031±346 601±21 302,960±24,303