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Combined display of all available logs of ASDSO Dam Safety Toolbox. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

16:23, 27 June 2022 Camrenbt talk contribs created page Siphoning May Not Always Be Possible (Created page with " <div style= "text-align:center;">  ''Message: Site constraints may eliminate siphons as a viable option'' </div> ----</br>  The outlet works of this Montana dam was in disrepair. The outlet works consist of two cylinder gates. One cylinder gate had experienced failure of both operating/lift stems and had slammed shut earlier during operational discharges. It was damaged and no longer operable....")
16:23, 27 June 2022 Camrenbt talk contribs uploaded File:SI5.jpg
16:23, 27 June 2022 Camrenbt talk contribs uploaded File:SI4.jpg
16:23, 27 June 2022 Camrenbt talk contribs uploaded File:SI3.jpg
16:23, 27 June 2022 Camrenbt talk contribs uploaded File:SI2.jpg
16:23, 27 June 2022 Camrenbt talk contribs uploaded File:SI1.jpg
16:04, 27 June 2022 Camrenbt talk contribs created page File:Siphon1.jpg
16:04, 27 June 2022 Camrenbt talk contribs created page Siphons when regular releases aren't needed (Created page with " <div style= "text-align:center;">  ''Message: Siphon systems are an option for reservoirs that don’t make regular releases. Easy to construct and avoid the need for a penetration through the dam.'' </div> ----</br>  This central Montana reservoir use was changed from irrigation to recreation. As a result, there was no longer a need to make periodic releases. During rehabilitation, it was dec...")
16:04, 27 June 2022 Camrenbt talk contribs uploaded File:Siphon1.jpg
22:39, 24 June 2022 Camrenbt talk contribs created page File:Drawdown System Selection Flow Chart.pdf
22:39, 24 June 2022 Camrenbt talk contribs created page File:Guidelines for Use of Pumps and Siphons for Emergency Reservoir Drawdown.pdf
22:39, 24 June 2022 Camrenbt talk contribs created page File:Simple Steps to Siphoning.pdf
22:39, 24 June 2022 Camrenbt talk contribs created page Siphons (Created page with "Many older dams were not constructed with a means of draining the reservoir. Lowering the reservoir may be needed for temporary construction, for emergency response, or when regular releases aren't needed. Siphons can be a low-cost means of providing a reservoir outlet if one does not exist. The key operational parameters are: (1) the required hydraulic lift cannot exceed the effective local atmospheric pressure adjusted for vapor pressure and frictional losses; (2) the...")
22:39, 24 June 2022 Camrenbt talk contribs uploaded File:Drawdown System Selection Flow Chart.pdf
22:39, 24 June 2022 Camrenbt talk contribs uploaded File:Guidelines for Use of Pumps and Siphons for Emergency Reservoir Drawdown.pdf
22:39, 24 June 2022 Camrenbt talk contribs uploaded File:Simple Steps to Siphoning.pdf
22:23, 24 June 2022 Camrenbt talk contribs created page File:DS6.jpg
22:23, 24 June 2022 Camrenbt talk contribs created page File:DS5.jpg
22:23, 24 June 2022 Camrenbt talk contribs created page File:DS4.jpg
22:23, 24 June 2022 Camrenbt talk contribs created page File:DS3.jpg
22:23, 24 June 2022 Camrenbt talk contribs created page File:DS2.jpg
22:23, 24 June 2022 Camrenbt talk contribs created page File:DS1.jpg
22:23, 24 June 2022 Camrenbt talk contribs created page ⚠ Include an Upstream Gate/Valve (Created page with " <div style= "text-align:center;">  ''Message: An upstream gate allows for the conduit to be inspected without draining the reservoir.'' </div> ----</br>  This Montana Dam has a downstream slide gate but does not have an upstream gate. The reservoir needs to be completely drained in order to complete an outlet inspection. <gallery mode="slideshow" >  File:DS1.jpg|...")
22:23, 24 June 2022 Camrenbt talk contribs created page Accounting for Energy Dissipation (Created page with "===Hydraulic Jump Stilling Basin:=== In the hydraulic jump stilling basin, water flowing at higher than critical velocity is forced into a hydraulic jump to dissipate energy in the resulting turbulence. The hydraulic jump basin is often favored by designers since it has been extensively studied and is well documented. A properly designed basin can usually dissipate 50 to 70 percent of the energy in the flow within the basin. Tailwater is required for successful operation...")
22:23, 24 June 2022 Camrenbt talk contribs uploaded File:DS6.jpg
22:23, 24 June 2022 Camrenbt talk contribs uploaded File:DS5.jpg
22:23, 24 June 2022 Camrenbt talk contribs uploaded File:DS4.jpg
22:23, 24 June 2022 Camrenbt talk contribs uploaded File:DS3.jpg
22:23, 24 June 2022 Camrenbt talk contribs uploaded File:DS2.jpg
22:23, 24 June 2022 Camrenbt talk contribs uploaded File:DS1.jpg
22:01, 24 June 2022 Camrenbt talk contribs created page Downstream Control (Created page with "Flow control facilities located at the downstream end of a conduit, when closed, subject the entire conduit to the full reservoir head and the possibility of high pressure leaks, piping along the conduit, and subsequent failure of the embankment. Special design considerations are necessary for dams with downstream control. A common recommendation is to house the conduit in a concrete-lined tunnel or to encase the conduit in concrete. Outlet facilities with downstream con...")
21:39, 24 June 2022 Camrenbt talk contribs created page File:CC3.jpg
21:39, 24 June 2022 Camrenbt talk contribs created page File:CC2.jpg
21:39, 24 June 2022 Camrenbt talk contribs created page File:CC1.jpg
21:39, 24 June 2022 Camrenbt talk contribs created page Single Chamber and Gate (Created page with " <div style= "text-align:center;">  ''Message: Center control towers provide protection from ice, vandalism, and provides ease of operation for the dam owner.'' </div> ----</br>  This southwestern Montana dam originally had an inclined slide gate. The owner decided to replace the inclined gate with a center control single chamber tower with a single gate, to avoid the operational problems with...")
21:39, 24 June 2022 Camrenbt talk contribs uploaded File:CC3.jpg
21:39, 24 June 2022 Camrenbt talk contribs uploaded File:CC2.jpg
21:39, 24 June 2022 Camrenbt talk contribs uploaded File:CC1.jpg
21:33, 24 June 2022 Camrenbt talk contribs created page File:GV4.jpg
21:33, 24 June 2022 Camrenbt talk contribs created page File:GV3.jpg
21:33, 24 June 2022 Camrenbt talk contribs created page File:GV2.jpg
21:33, 24 June 2022 Camrenbt talk contribs created page File:GV1.jpg
21:33, 24 June 2022 Camrenbt talk contribs created page Dual Chamber with Dual Slide Gates (Created page with " <div style= "text-align:center;">  ''Message: Various gate and valve configurations are available to suit your dam's needs'' </div> ----</br>  <gallery mode="slideshow" >  File:GV1.jpg|Slide gate (Can be used as a Sluice Gate) File:GV2.jpg|Normally slide gates are fully open, but they can be used in a sluice (underflow) situation as flow control File:GV3.jpg|Gate...")
21:33, 24 June 2022 Camrenbt talk contribs uploaded File:GV4.jpg
21:33, 24 June 2022 Camrenbt talk contribs uploaded File:GV3.jpg
21:33, 24 June 2022 Camrenbt talk contribs uploaded File:GV2.jpg
21:33, 24 June 2022 Camrenbt talk contribs uploaded File:GV1.jpg
19:59, 24 June 2022 Camrenbt talk contribs created page File:2WT4.jpg
19:59, 24 June 2022 Camrenbt talk contribs created page File:2WT3.jpg
19:59, 24 June 2022 Camrenbt talk contribs created page File:2WT2.jpg