bin-wallbridgeabutments

7/29/2019 Bin-WallBridgeAbutments

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ARMTEC.COM

Bridge Materials /

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BIN-WALL BRIDGE ABUTMENTS

hisTORy And AppliCATiOn

For economy in the construction o access roads or highways, it is essential that

ecient designs be employed to reduce material costs and time on the project.

The most costly ingredient in building roads is oten bridge construction, which

also can extend the job completion considerably.

To solve these problems, Armtec developed galvanized steel Bin-Wall Abutments.

This type o abutment has been used on hundreds o bridges built in Canada over

the past 30 years. Working alongside the owners technical representative, Armtec

will develop a custom Bin-Wall Abutment solution that conorms to the specied

design criteria and site conditions. The Bin-Wall Abutment Inquiry Data Sheet

located in this brochure will assist to identiy and collect key site parameters.

bin-wAll bRidgE AbuTMEnT

TypiCAl AppliCATiOns

Remote wilderness roads

Logging, mining and other

access roads

Provincial and municipal

highways and roads

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Avatae o b-wa bre Atmet

Easily transported because individual

components are nested into a

compact, lightweight load

Economical material supply

and installation costs

All components can be easily handled,

eliminating the need or heavy

equipment

Components are easily bolted

together or ast construction,

assembled in place or o-site and

lited into position

No waiting or ormwork, curing

time, etc.

All-weather construction

Proven strength and durability

All components are galvanized

No ootings are required

Abutments are fexible and will

accommodate minor settlement

and movement

Can be salvaged and reused at

another location

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BIN-WALL BRIDGE ABUTMENTInquiry Data Sheet

i Total Bridge Weight

i i Bridge Deck Width

iii No. o Driving Lanes

iv Bridge Span

v Fill Height

vi Live Load Design Vehicle

vii Abutment (Bin-Wall) Height

viii Abutment (Bin-Wall) Length

Wingwall Height (Not Shown)

ix Wingwall Length

x Wingwall Defection Angle

xi Allowable Bearing Pressure

Select

CL-625 (Highway)

CL-800 (Highway)

Logging Truck - 75 Ton



Other (Speciy)

Required Data Required Data Typical Design Vehicles

REQUIRED BRIDGE DATA

TOTAL BRIDGE WEIGHT (i)BRIDGE DECK WIDTH (ii)

NO. OF DRIVING LANES (iii)

FRONTFACE

REAR FACE

ABUTMENT LENGTH (viii)

WINGW

ALL

DEFLECTION

ANGLE

(x)

(c/c BEARING PAD)

LIVE LOADDESIGN VEHICLE (vi)

PLAN VIEW

ELEVATION VIEW

BINWALLHEIGHT (vii)

1,000mmMIN

150 DIA PERFORATED SUB-DRAIN

200mm

LIFTS

TYP

200

FILL HEIGHT (v)

GRADE PLATE BEARING ON 200mmGRANULAR CUSHION (LOOSE)

WINGWALLLENGTH(ix

)

BRIDGE SPAN (iv)

VARIES

BRIDGE DECK WIDTH (ii)

3,048 mm

TYP

BEARINGPAD

ALLOWABLE BEARINGPRESSURE (xi)


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i

Note 4*

Top of Road

Theoretical

Failure Plane

Granular Backfill

Subdrain

Note 11*

Fill Height

1 .3m

1.0m

MAxiMuM AllOwAblE bin hEighTs

CROss-sECTiOn

Fre 2Fre 1

O ha loa

F

het de b de C de d de E

mm mm mm mm mm

600 3,758 4,977 5,791 6,197

900 4,167 4,977 5,386 6,197

1,200 4,167 4,977 5,386 6,197

1,500 4,167 4,572 5,386 5,791

nOTE

Live Load between 6080kN/m

See Design Notes (Note 4)

ha loanOTE



F

het de b de C de d de E

mm mm mm mm mm

600 3,758 4,977 5,791 6,197

900 4,167 4,977 5,791 6,197

1,200 4,167 4,977 5,791 6,197

1,500 4,167 4,977 5,386 6,197

de Vecel-60 or Cl-625

de Vecel-75

nOTE



F

het de C de d de E de F

mm mm mm mm mm

600 4,167 4,572 4,977 5,386

900 3,758 4,572 4,977 5,386

1,200 3,758 4,167 4,977 5,386

1,500 3,758 4,167 4,572 5,386

de Vecel-150

F


mm mm mm mm mm

600 4,977 5,386 5,791 6,197

900 4,572 5,386 5,791 6,197

1,200 4,572 4,977 5,791 6,197

1,500 4,572 4,977 5,386 6,197

nOTE



de Vecel-100

nOTE



F


mm mm mm mm mm

900 3,353 3,758 4,167 4,572

1,200 2,947 3,353 4,167 4,572

1,500 2,947 3,353 4,167 4,572

1,800 2,947 3,353 3,758 4,572

de Vecel-165

TypiCAl bin-wAll AbuTMEnT

Reinforced concrete or

timber bearing pad

Rear corner

vertical

connector

Spacer stiffener

Stringer

stiffener

Stringers

Spacers

Vertical connector

Front corner

vertical connector

Grade plate

* s dn No (opposite)


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CAnMORE ski TRAil, Ab bin-wAll bRidgE AbuTMEnT

dEsign nOTEs

1. The design procedure to determinethe stability o the bins ollows theCoulomb Wedge Analysis. Lateral earthpressures on the wall are based on the

equilibrium o a ailure wedge o soilbehind the bin. The principle assumptionso this method are:

. The backll will be a good quality,ree draining, evenly graded granularmaterial possessing a minimum angleo internal riction = 33.

. Backll density = 19kN/m3.Backll is compacted to 95%Standard Proctor Density.

. Soil ailure plane is along a straightline originating at the heel o the bin.

2. Minimum allowable actors o saetyagainst overturning and sliding are 2.0and 1.5 respectively.

3. The maximum bin contact pressure onthe oundation or the wall heights listedis 230kPa. For allowable soil bearingcapacities less than 230kPa, consult yourArmtec representative.

4. The dead load and live load endreactions rom the bridge superstructureare applied as line loads over the top othe bin. The line load equals the bridgereaction divided by the bearing padlength. The maximum allowable binheights listed in the tables are basedon a bridge dead load between 1030kN/m.The bridge live load is noted directlybelow each table. (See Cross-SectionFigure 2 or location o applied dead andlive line loads.)

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

6. Bridge girder extends into theabutment 1.3m. (See Cross-Section

Figure 2.)

7. All loads are unactored.

8. Bin-Wall stringers and/or spacers mayrequire reinorcementconsult yourArmtec representative or details.

9. It is the owners responsibility toensure that actual site conditions meetor exceed the above requirements. It isalso the owners responsibility to checkdesign or global stability.

10. CL-625 is a typical design live load inthe CSA Code CAN/CSA-S6 or thedesign o highway bridges. L-75, L-100,L-150 and L-165 are o highway truck

loading designations o the Province oBritish Columbia, Ministry o Forests andLands, or the Logging Industry.

11. For walls constructed in or near water,the oundation elevation (bottom o theBin-Wall) must be established such thatit is below potential scour depths. It isimportant to prevent the loss ooundation material supporting the binsand the loss o ll being retained by thewall. The design o an appropriateembedment (depth below grade to theoundation) and o scour protection isthe responsibility o others.

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ERECTiOn insTRuCTiOns TypiCAl TOOls REquiREd

Structural wrenches (spud wrenches)

Drit pins

Socket wrenches with ratchet handles

Transit and level

Carpenters levelChalklines, tapes, etc.

Power or impact wrenches

Mobile crane or cherry-picker

electric drill with bits and reamers

Hacksaw or other metal-cutting saw

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1. premar ste

. Separate the parts and stack like partstogether. See drawings ornomenclature o parts. Bundle and

stacks should be positioned so thatwater will drain o parts. Ater parts arestacked and accessible, all parts shouldbe checked against the bill o material.

. The Part Number is stenciled on eachstringer and spacer, or thicknessidentication, see Drawing BW40001E.Drawing BW40002E shows the locationo each stringer by thickness. Note thatstringers are counted rom the top othe wall, not rom the bottom.

As an example, a 2.539m high wall willhave six 1.6mm stringers in the ront andour 1.6mm stringers in the rear ace. A4.572m high wall will have eight 1.6mmand three 2mm stringers in the ront and

six 1.6mm and three 2mm stringers inthe rear ace. Spacer thickness does notvary within any one wall depth. Allspacers or a Design D wall, or example,are 2.8mm and 3,264mm long.

2. Aem

. Distribute grade plates and verticalconnectors to proper locations. Verticalconnectors longer than 3,758mm willcontain 2 or more pieces. See drawingBW40001E or make up o verticalconnectors.

Note that on normal walls, rear verticalconnectors are 812mm shorter than ront.On two-piece (or three-piece) verticalconnectors, erection will oten be easier ithe entire length is not preassembled. Theupper corner connector type on onecorner will be the same as lower cornerconnector on opposite corner.

. Attach grade plates to verticalconnectors (nger tight) then attach twolower spacers (nger tight) to ront andrear vertical connectors. Stand up rst twounits and brace. (For preassembly, reer to4. Alternate Methods of Assembly.)

. Attach two stringers (nger tight)

in both ront and rear. Reer to drawingBW40002E or proper stringer thickness.

v. Now, check alignment o this rst bin.Make sure vertical connectors are plumb(or vertical walls) or on proper batter. Thetemporary attachment o a stringerstiener at the top o each ace isadvantageous. When alignment o all partsis correct, tighten all bolts except top boltsin top stringers and spacers.

On high walls use more than one stringerto ensure that connectors are parallel.

v. Special corners or other details willbe shown on supplementary drawings.Study these thoroughly beore startingerection o the special sections.Procedures will vary, but in general, it isdesirable to erect and x rmly in

position one o the vertical connectorsat such a point. The special plates andattachments, plus the second verticalconnector will then be supported duringassembly.

v. Under some conditions, spacers inend transverse sections requirereinorcing with tie rods to the nexttransverse section. Special details areurnished or this procedure. Rods mustbe placed beore any backlling o endbins is started.

v. When walls o dierent designdepth join, a split vertical connector isused to connect the stringers o thenarrower wall to the spacers o the next

bin. The split vertical connector is thelength o the lower wall height, and isbolted to the spacers with its longer legagainst the spacers. Backlling in thisarea must be done with special care, toavoid losing ll material through theopen corrugations o the spacers.

nOTE

In the horizontal overlaps o spacers,

double holes are punched, but or inside

spacers (ll on both sides) only single

bolting is required

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. Establish the ront and rear lines othe wall and the location o each verticalconnector. I wall is on a curve, or

contains specially abricated corners, asupplemental drawing is urnished.

Prepare a bed or each grade place atthe proper elevation, as determined romdrawing BW40002E. Note that orDesigns A and B walls on a one to eightbatter, the ront grade plate is lower thanthe rear plate. On all other one to sixbatter walls, the rear grade plate is lower.

I the base o the wall is below existingground, 450mm 600mm wide trenchesmay be dug or the lower wall members.Trenches must be wide enough, inrelation to depth, to allow or propercompaction o backll adjacent to themembers. I solid rock or other

unyielding soil is within 200mm o thenal elevation o the grade places, thismust be removed at grade platelocations or an area o approximately600mm x 600mm and replaced with a200mm thick layer o uncompacted ll.

v. (Cote) Note that i the Bin-Wall isa standard conguration, the spacers mustbe parallel to each other and perpendicularat 90 or correct installation.

v. Continue wall assembly, checking

subsequent bins or alignment beoretightening bolts. The sequence ooperations is not critical, and may vary.Some precations should be observed,however, or ease o assembly. These are:

v.1 Make sure vertical connectors areproper distance apart at top, beoretightening any bolts.

v.2 Backlling, particularly o tall bins,is less dicult i bin sides are not builttoo high.

v.3 End Transverse Sections requirespacer closures over ends o allspacers which do not have earth onboth sides. Closures should beinstalled with spacers.

v.4 Some special corners will requirestringer ends to be closed withstringer closures. This detail will beshown on special drawings orinstructions.

v.5 Double check that all bolts inareas to be backlled have beennally tightened.

v.6 On spliced vertical connectors,the splice plate should be on the sideo the web opposite the spacers.


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3. bacf

. Backll materiala good granularmaterial is recommended, see ArmtecBin-Wall Product Guide.

. I the design calls or drains behindor through the wall, install these beorestarting to backll.

. Backlling should start in the bins,and generally 1200mm or more oBin-Wall should be in place beore llingoutside or behind the bin. Next, ll thearea immediately in ront o the wall, tothe approximate nal grade i possible.

v. Backll should be placed in maximum200mm layers, and each layer must beleveled and thoroughly compactedbeore the next is placed. Leave no voidsanywhere, in the bins or outside. Fill allcorrugations in spacers and stringers,but do not damage wall members withdumping or compaction equipment.Care must be taken not to use powercompactors inside the bins within300mm o ront stringers.

v. Keep the bin lling well above the lllevel behind the wall (1200mmminimum). This ensures the stability othe wall. However, i the rear ace o thewall is close to an earth or rock ace andworking room is unduly restricted, thatarea should be backlled beore the rearstringers are installed too high or access.

4. Aterate Meto o Aem

. With adequate handling equipment,a ast economical method o erection isto preassemble the transverse sections,wholly or in part. All work is at a goodworking level and bolting is downhand

and thereore aster whether hand orpower wrenches are used.

.1 Sawhorses and timber generallymake an adequate assembly table.Spacers are laid (holes up) with endssquare and fush, and bolted togetherthrough the intermediate holes.

.2 Vertical connectors are then laidon the spacer ends, checked orparallel, and then bolted tight to thespacers. Grade plates are thenattached loosely to verticalconnector bottoms.

.3 The assembled transverse sectionis then set on the prepared

oundation and loosely connected tothe previous transverse section or binby one or two stringers at bottom,ront and rear, and stringers orstringer stieners at the top. Plumbthe new transverse section, thentighten bolts. The rest o the stringersare then bolted into place.

. Under some circumstances, the levelpreassembly o section o ront and rearwalls will be extremely advantageous.I liting equipment is available, and anadequate working area is accessible,

this method should be considered.

.1 Provide a working platorm osawhorses and timbers.

.2 Lay out vertical connectors withlegs o tees up, and loosely bolt ontop and bottom stringers (or stringerstieners).

.3 Check that vertical connectorsare parallel and square to stringersthen continue installing stringers,tightening nuts as you go. Attachgrade plates.

.4 Lit completed section o ront orrear wall into place on preparedgrade plate beds, check or proper

batter, and brace.

.5 Lit other ace similarly, and tie toalready erected ace with spacers,starting at bottom.

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1-877-5-ARMTEC | ARMTEC.COM

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Drawings and product details are or inormation

and/or illustrative purposes only and may vary. Please

contact your Armtec representative or the most

current product inormation.

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Stringer orShort Stringer

Spacers

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nOTE

Use one bolt per connection or

lapping o spacers at assembly

(except at end walls).

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Armtec Limited assumes responsibility only or components deectively

manuactured and or the specic inormation and acts set orth in this

manual. Since this manual is only a general guide and since precise andaccurate installation and proper backlling is critical to satisactory

perormance o the Bin-Wall, Armtec assumes no liability, expressed or

implied, or interpretation o the contents o this manual.

I you have questions concerning the interpretation o the contents o

this manual or installation and backlling procedures in general you

should contact your Armtec Sales Engineer or specic guidance on

any particular project. In the absence o such contact, Armtec expressly

disclaims all liability, expressed or implied, or aulty installation.

Stringer orShortStringer

VerticalConnector

Grade Plate

StringerStiener

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