Gabions - Revision history

Rmanwaring at 00:20, 14 December 2022

2022-12-14T00:20:31Z

← Older revision		Revision as of 00:20, 14 December 2022
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	"Gabions are rectangular-shaped baskets or mattresses fabricated from wire mesh, filled with rock, and assembled to form structures such as gravity retaining walls, lined channels, overflow weirs, hydraulic drops, and other erosion control structures. Gabions are also used for [[spillways]] and as [[Overtopping Protection\|overtopping protection]] for		"Gabions are rectangular-shaped baskets or mattresses fabricated from wire mesh, filled with rock, and assembled to form structures such as gravity retaining walls, lined channels, overflow [[weirs]], hydraulic drops, and other erosion control structures. Gabions are also used for [[spillways]] and as [[Overtopping Protection\|overtopping protection]] for
	small [[Embankment Dams\|embankment dams]] as discussed in this chapter. Gabion baskets are generally stacked in a stair-stepped fashion, while mattresses are generally placed parallel to a slope." <ref name="FEMA1015">[[Technical Manual: Overtopping Protection for Dams (FEMA P-1015)\| Technical Manual: Overtopping Protection for Dams (FEMA P-1015) ~~(Federal Emergency Management Agency~~, 2014)]]</ref>		small [[Embankment Dams\|embankment dams]] as discussed in this chapter. Gabion baskets are generally stacked in a stair-stepped fashion, while mattresses are generally placed parallel to a slope." <ref name="FEMA1015">[[Technical Manual: Overtopping Protection for Dams (FEMA P-1015)\| Technical Manual: Overtopping Protection for Dams (FEMA P-1015), FEMA, 2014]]</ref>

	"Gabions have advantages over loose riprap because of their modularity and rock confinement properties, thus providing erosion protection with generally less rock volume, within a smaller footprint, and with smaller rock sizes than loose riprap. Reducing the required rock volume and rock size for gabions to provide a similar level of erosion protection—as loose riprap can provide a significant reduction in [[construction]] cost. Gabions also have advantages over more rigid structures as they can:		"Gabions have advantages over loose [[riprap]] because of their modularity and rock confinement properties, thus providing erosion protection with generally less rock volume, within a smaller footprint, and with smaller rock sizes than loose riprap. Reducing the required rock volume and rock size for gabions to provide a similar level of erosion protection—as loose riprap can provide a significant reduction in [[construction]] cost. Gabions also have advantages over more rigid structures as they can:
	*Conform to ground movement		*Conform to ground movement
	*Be easily constructed and repaired		*Be easily constructed and repaired

Grichards at 20:40, 2 December 2022

2022-12-02T20:40:07Z

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	"Gabions are rectangular-shaped baskets or mattresses fabricated from wire mesh, filled with rock, and assembled to form structures such as gravity retaining walls, lined channels, overflow weirs, hydraulic drops, and other erosion control structures. Gabions are also used for [[spillways]] and as overtopping protection for		"Gabions are rectangular-shaped baskets or mattresses fabricated from wire mesh, filled with rock, and assembled to form structures such as gravity retaining walls, lined channels, overflow weirs, hydraulic drops, and other erosion control structures. Gabions are also used for [[spillways]] and as [[Overtopping Protection\|overtopping protection]] for
	small embankment dams as discussed in this chapter. Gabion baskets are generally stacked in a stair-stepped fashion, while mattresses are generally placed parallel to a slope." <ref name="FEMA1015">[[Technical Manual: Overtopping Protection for Dams (FEMA P-1015)\| Technical Manual: Overtopping Protection for Dams (FEMA P-1015) (Federal Emergency Management Agency, 2014)]]</ref>		small [[Embankment Dams\|embankment dams]] as discussed in this chapter. Gabion baskets are generally stacked in a stair-stepped fashion, while mattresses are generally placed parallel to a slope." <ref name="FEMA1015">[[Technical Manual: Overtopping Protection for Dams (FEMA P-1015)\| Technical Manual: Overtopping Protection for Dams (FEMA P-1015) (Federal Emergency Management Agency, 2014)]]</ref>

	"Gabions have advantages over loose riprap because of their modularity and rock confinement properties, thus providing erosion protection with generally less rock volume, within a smaller footprint, and with smaller rock sizes than loose riprap. Reducing the required rock volume and rock size for gabions to provide a similar level of erosion protection—as loose riprap can provide a significant reduction in [[construction]] cost. Gabions also have advantages over more rigid structures as they can:		"Gabions have advantages over loose riprap because of their modularity and rock confinement properties, thus providing erosion protection with generally less rock volume, within a smaller footprint, and with smaller rock sizes than loose riprap. Reducing the required rock volume and rock size for gabions to provide a similar level of erosion protection—as loose riprap can provide a significant reduction in [[construction]] cost. Gabions also have advantages over more rigid structures as they can:

Grichards: Created page with " NOTOC Category:Overtopping Protection ---- "Gabions are rectangular-shaped baskets or mattresses fabricated from wire mesh, filled with rock, and assembled to form structures such as gravity retaining walls, lined channels, overflow weirs, hydraulic drop..."

2022-12-02T20:39:38Z

Created page with "  __NOTOC__  Category:Overtopping Protection ----  "Gabions are rectangular-shaped baskets or mattresses fabricated from wire mesh, filled with rock, and assembled to form structures such as gravity retaining walls, lined channels, overflow weirs, hydraulic drop..."

New page

__NOTOC__

[[Category:Overtopping Protection]]
----



"Gabions are rectangular-shaped baskets or mattresses fabricated from wire mesh, filled with rock, and assembled to form structures such as gravity retaining walls, lined channels, overflow weirs, hydraulic drops, and other erosion control structures. Gabions are also used for [[spillways]] and as overtopping protection for
small embankment dams as discussed in this chapter. Gabion baskets are generally stacked in a stair-stepped fashion, while mattresses are generally placed parallel to a slope." <ref name="FEMA1015">[[Technical Manual: Overtopping Protection for Dams (FEMA P-1015)| Technical Manual: Overtopping Protection for Dams (FEMA P-1015) (Federal Emergency Management Agency, 2014)]]</ref>

"Gabions have advantages over loose riprap because of their modularity and rock confinement properties, thus providing erosion protection with generally less rock volume, within a smaller footprint, and with smaller rock sizes than loose riprap. Reducing the required rock volume and rock size for gabions to provide a similar level of erosion protection—as loose riprap can provide a significant reduction in [[construction]] cost. Gabions also have advantages over more rigid structures as they can:
*Conform to ground movement
*Be easily constructed and repaired
*Dissipate energy from flowing water
*Be designed to drain freely
"However, permeability may reduce over time as the voids in the rockfill become progressively filled with silt, promoting vegetation growth." <ref name="FEMA1015" />

"Some disadvantages of gabions include appearance, since the wire is exposed (although the use of attractive stone, colored wire coating, and vegetation may alleviate this concern) and durability, since the wire mesh may be subject to abrasion and corrosion damage (although special resistant coatings and materials are available to increase the design life). Gabions are also more susceptible to damage from debris and from vandalism compared to other types of dam overtopping protection, such as RCC or ACBs, requiring more frequent maintenance and repair. As for other types of overtopping protection, gabions can make detection of changed seepage conditions within the embankment and abutment more difficult." <ref name="FEMA1015" />


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Gabions - Revision history

Rmanwaring at 00:20, 14 December 2022

Grichards at 20:40, 2 December 2022

Grichards: Created page with " __NOTOC__ Category:Overtopping Protection ---- "Gabions are rectangular-shaped baskets or mattresses fabricated from wire mesh, filled with rock, and assembled to form structures such as gravity retaining walls, lined channels, overflow weirs, hydraulic drop..."

Grichards: Created page with " NOTOC Category:Overtopping Protection ---- "Gabions are rectangular-shaped baskets or mattresses fabricated from wire mesh, filled with rock, and assembled to form structures such as gravity retaining walls, lined channels, overflow weirs, hydraulic drop..."