bin-wall bridge abutments product guide -...

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BRIDGE MATERIALS / BIN-WALL BRIDGE ABUTMENTS

BIN-WALL BRIDGE ABUTMENTSPRODUCT GUIDE

LIGHTWEIGHT, GALVANIZED STEEL BIN-WALL BRIDGE ABUTMENTS SUPPORTS BRIDGE SUPER-STRUCTURES AND TRAFFIC LOADINGS

Versatile

Durable

Economical

Easy Shipping

BIN-WALL BRIDGE ABUTMENTS

HISTORY AND APPLICATION

For economy in the construction of access roads or highways, it is essential that efficient designs be employed to reduce material costs and time on the project.The most costly ingredient in building roads is often bridge construction, which also can extend the job completion considerably.

To solve these problems, Armtec developed galvanized steel Bin-Wall Abutments. This type of abutment has been used on hundreds of bridges built in Canada over the past 30 years. Working alongside the owner’s technical representative, Armtec will develop a custom bin-wall abutment solution that conforms to the specified design criteria and site conditions. The Bin-Wall Abutment Inquiry Data Sheet located on page 5 will assist to identify and collect key site parameters.

SNARE RIVER, NWT - 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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Advantages of Bin-Wall Bridge Abutments

• Easily transported because individual components are nested into a compact, light weight load

• Economical material supply and installation costs

• All components can be easily handled, eliminating the need for heavy equipment

• Components are easily bolted together for fast construction, assembled in place or off-site and lifted into position

• No waiting for formwork, curing time, etc• All-weather construction• Proven strength and durability • All components are galvanized• No footings are required• Abutments are flexible and will

accommodate minor settlement and movement

• Can be salvaged and reused at another location


DESIGN NOTES

1. The design procedure to determine the stability of the bins follows the Coulomb Wedge Analysis. Lateral earth pressures on the wall are based on the equilibrium of a failure wedge of soil behind the bin. The principle assumptions of this method are:

i. The backfill will be a good quality,free draining, evenly graded granular material possessing a minimum angle of internal friction = 33 degrees.

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

iii. Soil failure plane is along a straight 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 heights shown, is 230 kPa. For allowable soil bearing capacities less than 230 kPa, consult your Armtec representative.

4. The dead load and live load endreactions from the bridge superstructureare applied as line loads over the top of the bin. The line load equals the bridge reaction divided by the bearing pad length. The maximum allowable binheights listed in the tables are based on a bridge dead load between 10 - 30 kN/m. The bridge live load is noted directly below each table. (See Cross-Section Figure 2 for location of applied dead and live line loads)

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

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

7. All loads are unfactored.

8. Bin-Wall stringers and/or spacersmay require reinforcement — consult your Armtec representative for details.

9. It is the owner’s responsibility toensure that actual site conditions meet or exceed the above requirements. It is also the owner’s responsibility to check design for global stability.

10. CL-625 is a typical design live load in the CSA Code CAN/CSA-S6 for the design of highway bridges. L-75, L-100, L-150 and L-165 are off highway truck 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 be established such that it is below potential scour depths. It is important to prevent the loss of foundation material supportingthe bins and the loss of fill being retained by the wall. The design of an appropriate embedment (depthbelow grade to the foundation) and of scour protection is the responsibilityof others.

BAK CREEK NUNGESSOR RD, RED LAKE, ON - BIN-WALL BRIDGE ABUTMENT ELBOW FALLS AND BRAGG CREEK, AB - BIN-WALL BRIDGE ABUTMENT

Figure 2

Note 4*

Top of Road

TheoreticalFailure Plane

Granular Backfill

Subdrain

Note 11*

Fill Height

1.3m

1 .0m

Fill Height Design B Design C Design D Design 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


MAXIMUM ALLOWABLE BIN HEIGHTS

CROSS-SECTION

Figure 2Figure 1

Off Highway Loading

NOTE:• Live Load between 60 - 80 kN/m• See Design Notes (Note 4)

Highway Loading


FillHeight Design B Design C Design D Design 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

Design Vehicle - L-60 or CL-625

Design Vehicle - L-75


Fill Height Design C Design D Design E Design 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


FillHeight Design C Design D Design E Design 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




Fill Height Design C Design D Design E Design 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


TYPICAL BIN-WALL ABUTMENT

Reinforced concrete or timber bearing pad

Rear corner vertical

connector

Spacer stiffener

Stringer stiffener

Stringers

SpacersVertical connector

Front corner vertical connector

Grade plate* See Design Notes

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BIN-WALL BRIDGE ABUTMENTInquiry Data Sheet

Armtec / Products and Services / Bridge Materials / Bin-Wall Bridge Abutment / Inquiry Data Sheet | 06/11

i Total Bridge Weight

ii Bridge Deck Width

iii No. of 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 Deflection Angle

xi Allowable Bearing Pressure

Select

CL-625 (Highway)

CL-800 (Highway)

Logging Truck - 75 Ton



Other (Specify)

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)

WIN

G W

ALL

DE

FLE

CT

ION

AN

GLE

(x)

(c/c BEARING PAD)

LIVE LOAD DESIGN VEHICLE (vi)

PLAN VIEW

ELEVATION VIEW

BINWALLHEIGHT (vii)

1,000mmMIN

150 DIA PERFORATED SUB-DRAIN

200

mm

LIF

TS

TY

P

200

FILL HEIGHT (v)

GRADE PLATE BEARING ON 200mmGRANULAR CUSHION (LOOSE)

WING WALL LENGTH (ix)

BRIDGE SPAN (iv)

VAR

IES

BRIDGE DECK WIDTH (ii)

3,048 mmTYP

BEARINGPAD

ALLOWABLE BEARINGPRESSURE (xi)

Project Name

Armtec / Products and Services / Bridge Materials / Bin-Wall Bridge Abutments / Product Guide | 2011–07

bin-wall bridge abutments product guide -...

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