Cost-Estimating Tools for Low-Impact Development Best Management Practices: Challenges, Limitations, and Implications
| Autor: | Christine A. Pomeroy, C. Dasch Houdeshel, Lisa Hair, Jeff Moeller |
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| Rok vydání: | 2011 |
| Předmět: |
Green engineering
Engineering Operations research Cost estimate business.industry Best practice Cost contingency Agricultural and Biological Sciences (miscellaneous) Net present value Whole-life cost Risk analysis (engineering) Capital cost business Water Science and Technology Civil and Structural Engineering Cost database |
| Zdroj: | Journal of Irrigation and Drainage Engineering. 137:183-189 |
| ISSN: | 1943-4774 0733-9437 |
| DOI: | 10.1061/(asce)ir.1943-4774.0000179 |
| Popis: | Tools were developed for estimating costs of vegetative roofs, rainwater catchment systems, and bioretention facilities. These tools provide a detailed framework to facilitate cost estimation for capital costs, operation and maintenance costs, and life-cycle net present value. The tools can provide users with planning-level cost estimates and serve as a format for cost-reporting for past, current, and future projects. Very little cost data was available in the public forum, and prolific inconsistencies of supporting details were found in the available cost data. To address this, design assumptions were established for each facility type and professionally prepared cost estimates based on these design assumptions were used. Electives in design, such as plant selection and media depth, also greatly affected costs. To make the user aware of these effects, the model separates each option into line items that can be elected or excluded as appropriate. To facilitate collecting future cost data, best management practice (BMP) designers and builders should use these tools to record actual costs and report them to a clearinghouse such as the BMP Database. |
| Databáze: | OpenAIRE |
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