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Last modified
1/26/2010 10:08:12 AM
Creation date
10/5/2006 4:07:02 AM
Metadata
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Template:
Floodplain Documents
County
Ouray
Community
Ouray
Stream Name
Uncompahgre River
Basin
Gunnison
Title
Portland Flume Reconstruction Ouray
Date
5/18/1984
Prepared For
Ouray
Prepared By
Western Technologies
Floodplain - Doc Type
Project
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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Simons, Li and Associates, Inc, <br />Job Number 6l43J002 <br />Project Portland Flume Reconstruction <br /> <br />Structure No. lOP - (Sta. 1 + 95) and Structure No, lIP - (Sta, 1 <br />+ 50): Both of these structures are two story wood frame build- <br />ings presently being utilized for building materials storage, <br />Both structures are resting on isolated concrete pads setting on <br />or just below the ground surface. Both bUildings have suspended <br />wooden floors with the floor joists supported by unmortered <br />masonry block column stem walls, Structure No. lOP is approxi- <br />mately 7 feet from the existing flume, and Structure No, lIP is <br />approximately 3 feet from the existing flume. <br /> <br />Temporary Support: It appears that several structures on both the <br />Cascade and Portland Flumes will require some temporary support <br />during construction. Due to the age and condition of the struc- <br />tures, it may be necessary to provide permanent underpinning sys- <br />tems in some cases. Both temporary and permanent shoring/ <br />underpinning can be provided in numerous ways. Some of the more <br />common methods for vertical support are: isolated concrete pads <br />placed in pits hand dug under the existing foundation; pretest <br />piles placed in the same manner and jacked against the existing <br />foundation; inclined vertical bracing notched into the existing <br />footing and bearing outside of the structure; needle (carrier) <br />beams extending through the structure and supported on both ends <br />by wood cribbing, drilled elements, or concrete pads; battered, <br />concrete filled drilled elements; battered piles; and mud jack- <br />ing. Each method has certain advantages and disadvantages depend- <br />ing on loading conditions, accessibility, time constraints, sub- <br />soil conditions and numerous other factors, Temporary support <br />and/or permanent underpinning should be approached on an indivi- <br />dual basis for each structure. Contractors experienced in this <br />type of work are a valuable source of information, Therefore, it <br />is recommended that the contractor performing this work be <br />required to submit a design for each structure to be reviewed and <br />modified by the engineer prior to installation, In this way, the <br /> <br />~ <br /> <br /> <br />-10- <br />
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