BIN-WALL®

BRIDGE ABUTMENTS

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For economy in the construction of access roads or highways, it isessential that efficient designs beemployed to reduce material costsand time on the project.

The most costly ingredient in buildingroads is often bridge construction,which also can extend the job completion considerably.

To solve these problems, Armtecdeveloped galvanized steel Bin-WallAbutments. This type of abutmenthas been used on hundreds ofbridges built in Canada over the past 30 years.

Armtec Bin-Wall Abutments havemany advantages:

• Easily transported because individualcomponents are nested into a compact, light weight load.

• Economical material supply andinstallation costs. All componentscan be easily manhandled, eliminating the need for heavyequipment.

• Components are easily boltedtogether for fast construction. They can be assembled in place oroff-site and lifted into position.

• No waiting for formwork, curingtime, etc.

• All-weather construction.

• Proven strength and durability.

• All components are galvanized.

• No footings are required.

• Abutments are flexible and willaccommodate minor settlementand movement.

• Can be salvaged and reused atanother location.

• Armtec will provide a design anddetail drawings of the Bin-WallAbutments. The owner’s designermust ensure that the assumptionsused in the design are correct andthat the ground has sufficientbearing capacity to support theloads.

ARMTEC BIN-WALLBRIDGE ABUTMENTS

Spacer stiffener

Rear cornervertical connector

Spacers

Front corner vertical connector

Stringers

Vertical connector

Typical Bin-Wall Abutment Figure 1

Logging, mining and other access roadsProvincial and municipal highways and roadsRemote wilderness sites

Reinforced concrete or timber bearing pad

Grade plate

Stringer stiffener

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Maximum AllowableBin Heights (mm)

1. The design procedure to determinethe stability of the bins followsthe Coulomb Wedge Analysis.Lateral earth pressures on thewall are based on the equilibriumof a failure wedge of soil behindthe bin. The principle assumptionsof this method are:i) The backfill will be a good quali-

ty, free draining, evenly gradedgranular material possessing a minimum angle of internalfriction = 33 degrees.

ii) Backfill density = 19 kN/m3.Backfill is compacted to 95%Standard Proctor Density.

iii) Soil ailure plane is along astraight line originating at the heel of the bin.

2. Minimum allowable factors ofsafety against overturning andsliding are 2.0 and 1.5 respectively.

3. The maximum design toe pressurebeneath the bin, for the heightsshown, is 230 kPa. For allowablesoil bearing capacities less than230 kPa, consult your Armtec representative.

4. The dead load and live load endreactions from the bridge super-structure are applied as line loadsover the top of the bin. The lineload equals the bridge reactiondivided by the bearing pad length.The maximum allowable binheights listed in the tables arebased on a bridge dead loadbetween 10 - 30 kN/m. The bridgelive load is noted directly beloweach table. (See Figure 2 for location of applied dead and live line loads.)

5. Bearing pads must not be in contact with Bin-Wall members.

6. Bridge girder extends into theabutment 1.3 m. (See Figure 2)

7. All loads are unfactored.8. Bin-Wall stringers and/or spacers

may require reinforcement — consult your Armtec representative for details.

9. It is the owner’s responsibility toensure that actual site conditionsmeet or exceed the above requirements. It is also theowner’s responsibility to checkdesign for global stability.

10. CS-625 is the recommendeddesign live load in the CSA CodeCAN/CSA-S6-00 for the design of highway bridges. L-75, L-100,L-150 and L-165 are off highwaytruck loading designations of the Province of British Columbia,Ministry of Forests and Lands, for the Logging Industry.

11. For walls constructed in or nearwater, the foundation elevation(bottom of the Bin-Wall) must beestablished such that it is belowpotential scour depths. It isimportant to prevent the loss offoundation material supportingthe bins and the loss offill being retained by the wall. The design of an appropriateembedment (depthbelow grade tothe foundation)and of scour protection is the responsibilityof others.

Highway LoadingFILL DESIGN VEHICLE – L-60 OR CL-625HEIGHT(mm) DESIGN B DESIGN C DESIGN D DESIGN E600 3758 4977 5791 6197900 4167 4977 5791 61971200 4167 4977 5791 61971500 4167 4977 5386 6197

Off Highway LoadingFILL DESIGN VEHICLE – L-75HEIGHT(mm) DESIGN B DESIGN C DESIGN D DESIGN E600 3758 4977 5791 6197900 4167 4977 5386 61971200 4167 4977 5386 61971500 4167 4572 5386 5791

(Live Load between 45 - 65 kN/m. See Note 4.)

(Live Load between 60 - 80 kN/m. See Note 4.)

FILL DESIGN VEHICLE – L-100HEIGHT(mm) DESIGN C DESIGN D DESIGN E DESIGN F600 4977 5386 5791 6197900 4572 5386 5791 61971200 4572 4977 5791 61971500 4572 4977 5386 6197(Live Load between 75 - 105 kN/m. See Note 4.)

FILL DESIGN VEHICLE – L-150HEIGHT(mm) DESIGN C DESIGN D DESIGN E DESIGN F600 4167 4572 4977 5386900 3758 4572 4977 53861200 3758 4167 4977 53861500 3758 4167 4572 5386(Live Load between 120 - 160 kN/m. See Note 4.)

FILL DESIGN VEHICLE – L-165HEIGHT(mm) DESIGN C DESIGN D DESIGN E DESIGN F900 3353 3758 4167 45721200 2947 3353 4167 45721500 2947 3353 4167 45721800 2947 3353 3758 4572(Live Load between 150 - 190 kN/m. See Note 4.)

Bin-Wall BridgeAbutment for abridge over CrookedRiver, near McKenzie,British Columbia.Although 4.5 metreshigh, much of theabutment is buried.Owner – FletcherChallenge.

Design notes:

Cross-Section Figure 2

See Note 4

Top of Road

Theoreticalfailure plane

Granular backfill

Subdrain

See Note 11

Fill Height

Head Office: 15 Campbell Road, P.O. Box 3000, Guelph, ON N1H 6P2www.armtec.comSales Offices: Nanaimo, Prince George, Vancouver, Edmonton, Calgary, Lethbridge, GrandePrairie, Saskatoon, Winnipeg, Thunder Bay, Sudbury, London, Guelph, Toronto,Peterborough, Chesterville, Forest, Orangeville, Comber, Montreal, QuebecCity, St. Clet, Sackville, Bishop’s Falls and St. John’s.

BWBA/BP/30/C/1002

Lightweight and versatile, Bin-Walls bolt together on site. Easily. Quickly. They make for cost-effective bridge abutments and wing walls.

A combination of heavy rainfall (150 mm) and early snow melt resulted in the washout of the vital mountain access road. Armtec’s Bin-Wall Bridge Abutments, Guard Rail and Geotextiles were installedto ensure the road was reopened on schedule.

Elbow Falls and Bragg Creek, Alberta

Ministry of Natural Resources found Armtec’s Bin-Wall BridgeAbutments an economical alternative to timber crib walls (savingapproximately 20%).

Bak Creek Nungessor Road, 100 Km north of Red Lake, Ontario