⚠ May require more grout than anticipated - Revision history

Grichards at 00:28, 2 December 2022

2022-12-02T00:28:35Z

← Older revision		Revision as of 00:28, 2 December 2022
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	~~<div style= "text~~-~~align:center;">~~''Message: Sliplining perforated CMP can be problematic because grout may fill holes in embankment.''~~</div>~~		[[Category:Rehab vs. Replacement Outlet Works]]
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			''' ''Message: Sliplining perforated CMP can be problematic because grout may fill holes in embankment.'' '''

	'''Lessons Learned:'''		'''Lessons Learned:'''
	#If pipe has holes, consider replacement instead of slip lining. It can be difficult to estimate grout needs because voids adjacent to the conduit can fill with grout.		#If pipe has holes, consider [[replacement]] instead of slip [[lining]]. It can be difficult to estimate grout needs because voids adjacent to the conduit can fill with grout.
	#Grout mix and placement technique is very important. The grout must be flowable in order to properly seal the annular space.		#Grout mix and placement technique is very important. The grout must be flowable in order to properly seal the annular space.
	#Grout is especially important with mechanical joints – more important than with a fusion welded joint.		#Grout is especially important with mechanical joints – more important than with a fusion welded joint.
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	<gallery mode="slideshow">		<gallery mode="slideshow">
	File:SMR1.jpg\|This central Montana dam had holes in the invert of the pipe. The pipe was sliplined with a mechanically joined HDPE pipe.		File:SMR1.jpg\|This central [[Montana]] dam had holes in the invert of the pipe. The pipe was sliplined with a mechanically joined HDPE pipe.
	File:SMR2.jpg\|This central Montana dam had holes in the invert of the pipe. The pipe was sliplined with a mechanically joined HDPE pipe.The grout take was significantly higher than the original quantity estimate – voids around the pipe were far worse than anticipated.		File:SMR2.jpg\|This central Montana dam had holes in the invert of the pipe. The pipe was sliplined with a mechanically joined HDPE pipe.The grout take was significantly higher than the original quantity estimate – voids around the pipe were far worse than anticipated.
	File:SMR3.jpg\|This central Montana dam had holes in the invert of the pipe. The pipe was sliplined with a mechanically joined HDPE pipe.The grout take was significantly higher than the original quantity estimate – voids around the pipe were far worse than anticipated.It was difficult to get a good seal of annular space and to achieve the correct grout mix (due to winter conditions) – sand caused bridging in the annular space.		File:SMR3.jpg\|This central Montana dam had holes in the invert of the pipe. The pipe was sliplined with a mechanically joined HDPE pipe.The grout take was significantly higher than the original quantity estimate – voids around the pipe were far worse than anticipated.It was difficult to get a good seal of annular space and to achieve the correct grout mix (due to winter conditions) – sand caused bridging in the annular space.

Grichards at 20:01, 15 September 2022

2022-09-15T20:01:42Z

← Older revision		Revision as of 20:01, 15 September 2022
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	</gallery>		</gallery>


			''Note: The content on this page was originally created as part of DamOutletWorks.org (DOWL, 2018). It has subsequently been updated and reformatted as part of the Dam Safety Toolbox.''
	[[Category:Example Pages]]		[[Category:Example Pages]]
	{{Revhistinf}}		{{Revhistinf}}

Camrenbt: Created page with "
''Message: Sliplining perforated CMP can be problematic because grout may fill holes in embankment.''
----
'''Lessons Learned:''' #If pipe has holes, consider replacement instead of slip lining. It can be difficult to estimate grout needs because voids adjacent to the conduit can fill with grout. #Grout mix and placement technique is very important. The grout must be flowable in order to properly seal the annular space. #Grout..."

2022-06-23T21:36:22Z

Created page with "<div style= "text-align:center;">''Message: Sliplining perforated CMP can be problematic because grout may fill holes in embankment.''</div> ----</br> '''Lessons Learned:''' #If pipe has holes, consider replacement instead of slip lining. It can be difficult to estimate grout needs because voids adjacent to the conduit can fill with grout. #Grout mix and placement technique is very important. The grout must be flowable in order to properly seal the annular space. #Grout..."

New page

<div style= "text-align:center;">''Message: Sliplining perforated CMP can be problematic because grout may fill holes in embankment.''</div>
----</br>

'''Lessons Learned:'''
#If pipe has holes, consider replacement instead of slip lining. It can be difficult to estimate grout needs because voids adjacent to the conduit can fill with grout.
#Grout mix and placement technique is very important. The grout must be flowable in order to properly seal the annular space.
#Grout is especially important with mechanical joints – more important than with a fusion welded joint.
#Low head dams might be more cost effective to replace than slipline.

<gallery mode="slideshow">
File:SMR1.jpg|This central Montana dam had holes in the invert of the pipe. The pipe was sliplined with a mechanically joined HDPE pipe.
File:SMR2.jpg|This central Montana dam had holes in the invert of the pipe. The pipe was sliplined with a mechanically joined HDPE pipe.The grout take was significantly higher than the original quantity estimate – voids around the pipe were far worse than anticipated.
File:SMR3.jpg|This central Montana dam had holes in the invert of the pipe. The pipe was sliplined with a mechanically joined HDPE pipe.The grout take was significantly higher than the original quantity estimate – voids around the pipe were far worse than anticipated.It was difficult to get a good seal of annular space and to achieve the correct grout mix (due to winter conditions) – sand caused bridging in the annular space.
File:SMR4.jpg|

</gallery>

[[Category:Example Pages]]
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