5Sandbag Construction 2011 - United States Army Corps of ... Center... · Placement of Sandbags...
Transcript of 5Sandbag Construction 2011 - United States Army Corps of ... Center... · Placement of Sandbags...
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Sandbag Construction
US Army Corps of EngineersBUILDING STRONG®
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Emergency ConstructionSandbagsSandbags
Typical uses:
• Where a low and relatively short barrier is required
• Constricted areas where there is no room for earthfill levees• ex. back yards, buildings close to channel
• Closures / temporary closures• ex. Roads, railroad tracks
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Emergency ConstructionSandbagsSandbags
Design section:
• 1:3 cross section (1 foot high for 3 foot width)
5 f t i h i ht• 5 foot maximum height
• 3 foot or less height preferred
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Filling Sandbags
Fill sacks approximately ½ full
Do not tie sacks
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Placement of Sandbags
Start upstream
Where possible strip sod / topsoilWhere possible, strip sod / topsoil
Where possible, excavate bonding trench 1 sack deep by 2 sacks widesacks wide
Alternate direction of placement of bags with bottom layer parallel to flowp
Lap unfilled portion of sandbag under new sack
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Placement of Sandbags (cont.)
Overlap unfilled portion of sack with filled portion of next sack
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dth: 3 t imes heightdth: 3 t imes height
Placement of Sandbags (cont.)Width: 3 t imes
Height
Width: 3 t imes
Height
Bonding trench:1sackdeep byBonding trench:1sackdeep by
Water side Strip sod before layingbottom layer, if possible
1 sack deep by2 sacks wideWater side Strip sod before laying
bottom layer, if possible
1 sack deep by2 sacks wide
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Placement of Sandbags (cont.)
Sandbags as weightsSandbags as weights
PolyPoly
Place poly on wet side of sandbag closure to prevent / reduce seepage
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Placement of Sandbags (cont.) Number of sandbags required per foot of closure vs.Number of sandbags required per foot of closure vs.
sandbag closure height
Height in Feet Bags Required
1 52 103 214 365 55
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Sandbag placement exercise
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Sandbag placement exercise
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Sandbag ring levee with poly on inside face to
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prevent seepage
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Sandbag ring le ee to contain seepage
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Sandbag ring levee to contain seepage
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Sandbags placed at apartment building
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Seepage/Erosion Protection:Polyethylene Sheeting and
SandbagsSandbags
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Seepage/Erosion Protection:Polyethylene Sheeting and SandbagsPolyethylene Sheeting and Sandbags Polyethylene (poly) Sheeting - ~6 mil thick
Sandbags used to anchor poly in place
Pl t i f i l i k Placement is fairly quick
Materials inexpensive
Place materials in the dry or in the wet
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Seepage/Erosion Protection:Seepage/Erosion Protection:Poly Sheeting and Sandbags (cont)
Placement of poly sheeting and sandbags in the dry
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Placement of poly sheeting and sandbags in the dry
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Seepage/Erosion Protection:Seepage/Erosion Protection:Poly Sheeting and Sandbags (cont)
Placement of pol sheeting and sandbags in the dr
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Placement of poly sheeting and sandbags in the dry
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Seepage/Erosion Protection:Poly Sheeting and Sandbags (cont)
Placement of poly sheeting and sandbags in the wet
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p y g g
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Placement of poly on riverward side of levee to prevent seepage / erosion Poly weighted down with sandbags
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seepage / erosion. Poly weighted down with sandbags
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Placement of poly on riverside of levee to prevent erosion / seepage
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erosion / seepage