EXHIBIT 12.1

DUKE REALTY LIMITED PARTNERSHIP

CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES AND RATIO OF EARNINGS TO COMBINED

FIXED CHARGES AND PREFERRED DISTRIBUTIONS

(in thousands, except ratios)



|                                                                           |  |                             |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        
|-------------------------------------------------------------------------- |  | --------------------------- | ------- | --- | -------------------------- | - | -------- | -------------------------- |  | - | -------------------------- | --- | -------------------------- | - | -------------------------- |  | - | ------- |  | - | -------
|                                                                           |  | Six MonthsEndedJune 30,2010 |         |     | Year EndedDecember 31,2009 |   |          | Year EndedDecember 31,2008 |  |   | Year EndedDecember 31,2007 |     | Year EndedDecember 31,2006 |   | Year EndedDecember 31,2005
|Net income (loss) from continuing operations, less preferred distributions |  | $                           | (68,431 | )   |                            | $ | (351,415 | )                          |  | $ | 15,780                     |     |                            | $ | 102,089                    |  | $ | 98,480  |  | $ | 91,490 
|Preferred distributions                                                    |  |                             | 36,726  |     |                            |   | 73,451   |                            |  |   | 71,426                     |     |                            |   | 58,292                     |  |   | 56,419  |  |   | 46,479 
|Interest expense                                                           |  |                             | 119,447 |     |                            |   | 216,058  |                            |  |   | 194,204                    |     |                            |   | 170,660                    |  |   | 166,222 |  |   | 102,606
|                                                                           |  |                             |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        
|Earnings (loss) before fixed charges                                       |  | $                           | 87,742  |     |                            | $ | (61,906  | )                          |  | $ | 281,410                    |     |                            | $ | 331,041                    |  | $ | 321,121 |  | $ | 240,575
|                                                                           |  |                             |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        
|                                                                           |  |                             |         |     |                            |  
|Interest expense                                                           |  | $                           | 119,447 |     |                            | $ | 216,058  |                            |  | $ | 194,204                    |     |                            | $ | 170,660                    |  | $ | 166,222 |  | $ | 102,606
|Interest costs capitalized                                                 |  |                             | 7,198   |     |                            |   | 26,864   |                            |  |   | 53,456                     |     |                            |   | 59,167                     |  |   | 36,260  |  |   | 9,510  
|                                                                           |  |                             |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        
|Total fixed charges                                                        |  |                             | 126,645 |     |                            |   | 242,922  |                            |  |   | 247,660                    |     |                            |   | 229,827                    |  |   | 202,482 |  |   | 112,116
|                                                                           |  |                             |         |     |                            |  
|Preferred distributions                                                    |  |                             | 36,726  |     |                            |   | 73,451   |                            |  |   | 71,426                     |     |                            |   | 58,292                     |  |   | 56,419  |  |   | 46,479 
|                                                                           |  |                             |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        
|Total fixed charges and preferred distributions                            |  | $                           | 163,371 |     |                            | $ | 316,373  |                            |  | $ | 319,086                    |     |                            | $ | 288,119                    |  | $ | 258,901 |  | $ | 158,595
|                                                                           |  |                             |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        
|                                                                           |  |                             |         |     |                            |  
|Ratio of earnings to fixed charges                                         |  |                             | N/A     | (1) |                            |   | N/A      | (3)                        |  |   | 1.14                       |     |                            |   | 1.44                       |  |   | 1.59    |  |   | 2.15   
|                                                                           |  |                             |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        
|                                                                           |  |                             |         |     |                            |  
|Ratio of earnings to fixed charges and preferred distributions             |  |                             | N/A     | (2) |                            |   | N/A      | (4)                        |  |   | N/A                        | (5) |                            |   | 1.15                       |  |   | 1.24    |  |   | 1.52   
|                                                                           |  |                             |         |     |                            |   |          |                            |  |   |                            |     |                            |   |                            |  |   |         |  |   |        



|(1) | N/A  The ratio is less than 1.0; deficit of $38.9 million exists for the six months ended June 30, 2010. The calculation of earnings includes $164.8 million
of non-cash depreciation expense.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | N/A  The ratio is less than 1.0; deficit of $75.6 million exists for the six months ended June 30, 2010. The calculation of earnings includes $164.8 million
of non-cash depreciation expense.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | N/A  The ratio is less than 1.0; deficit of $304.8 million exists for the year ended December 31, 2009. The calculation of earnings includes $333.7 million
of non-cash depreciation expense.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | N/A  The ratio is less than 1.0; deficit of $378.3 million exists for the year ended December 31, 2009. The calculation of earnings includes $333.7 million
of non-cash depreciation expense.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(5) | N/A  The ratio is less than 1.0; deficit of $37.7 million exists for the year ended December 31, 2008. The calculation of earnings includes $303.6 million of
non-cash depreciation expense.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------