Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
Randy McDonald,
P.Eng.
Director of Engineering
Armtec
Drainage Solutions
Frank Klita
Sales Representative
Armtec
Drainage ...
Randy McDonald,
P.Eng.
Director of Engineering
Armtec
Drainage Solutions
Frank Klita
Sales Representative
Armtec
Drainage ...
YOUR HOST
Janine Yetke
Director of Marketing
Armtec, Drainage Solutions
LinkedIn: ca.linkedin.com/in/janineyetke/en
Email:...
JOIN THE DISCUSSION
At any time during
the presentation,
please enter your
questions into the
Question Log
CPD CREDIT CERTIFICATES
• Qualifies in Most Jurisdictions in Canada & USA for 1 Hour Technical
Informal
• Formal completio...
Armtec is one of Canada’s
largest infrastructure
company supplying precast,
corrugated steel and HDPE
products and solutio...
SECTORS
Armtec specializes in all infrastructure markets and segments and can help with any project to ensure you
have the...
Armtec Drainage Solutions’ centralized engineering
department consists of design engineers, a drafting team,
and estimator...
YOUR SPEAKERS
Randy McDonald P.Eng.
Director of Engineering
Armtec, Drainage Solutions
Randy.McDonald@armtec.com
Frank Kli...
AGENDA
1. Overview - Segmental Plate Products for Buried Bridges
2. Buried Bridge Structural Design – Section 7 CSA S-6 CH...
Segmental Plate Products1
Multi-Plate 152 x 51
Bridge-Plate 400 x 150
Tunnel Liner Plate 500 x 52
SPCSP AND DCSP
SHAPE OPTIONS
MULTI-PLATE SUPER-SPAN
14.4m span x 6.8m rise High Profile Arch
LARGEST SUPER-SPAN (1984)
18.0m span x 7.4m rise Low Profile Arch
DCSP
Deep Corrugated Structural Plate
• Bridge-Plate
• 400 x 150 corrugation
• Plates widths are 1200mm (3 corrugations)
•...
BRIDGE-PLATE BOX CULVERT
Structural Design2
STRUCTURAL DESIGN
Buried structures
• two distinctly different materials that interact to
create a complex composite geo-s...
BURIED STRUCTURE COMPONENTS
20
• Soil Component:
– engineered granular
backfill envelope
– materials of known
geotechnical...
STRUCTURAL DESIGN
Load resistance of the composite system
• highly influenced upon the geotechnical
properties of the back...
STRUCTURAL DESIGN
Force Analysis
• Determine thrusts, moments and deflections
during and post construction
Strength Analys...
STRUCTURAL DESIGN
Load Definitions
Dead Loads
• Weight of the soil column directly above the
footprint of the structure
• ...
STRUCTURAL DESIGN
Live Loads (Surface Pressure)
• Position as many axles of the design
vehicle at the road surface above t...
STRUCTURAL DESIGN
1
1
1
1
STRUCTURAL DESIGN
Truck Loading
• Highway Trucks – CL625, CL800
• 5 axles – 225 kN maximum axle load
Extreme Live Loads
• ...
STRUCTURAL DESIGN
Railway Loading
80K AXLE LOAD = 355 kN
2526 kN Total
250 TONNE HAUL TRUCK LIVE LOAD
12.4 m span x 5.6 m rise bridge-plate arch
STRUCTURAL DESIGN
Earthquake Loads
– Earthquake loads are limited to determining an
additional thrust component known as T...
10 Step Design Process
for Soil-Steel Structures
1 10
5.0
6 





v
hh
D
DD
2
4.0 





v
h
D
D
Minimum Cover (Hmin) is the largest of:
a) 0.6 m
b)
c)
Determine...
Determine Minimum Cover1
Calculate Dead Load Thrust
• TD = 0.5 (1.0 – 0.1 CS) Af W
• W = weight of column of material above
2
)(
1000
parameterstif...
Calculate Dead Load Thrust
• TD = 0.5 (1.0 – 0.1 CS) Af W
• Af = arching factor
2
Span < Rise
Span = Rise (round)
Span > R...
Calculate Live Load Thrust
• Position as many axles of the CL-625 overtop
as would give maximum total load
3
  fLthL mla...
Calculate Earthquake Thrust
AH varies from 0 to 0.40 in Canada
4
vDe ATT 
ratioonacceleratizonalAwhereAA HHV 
3
2
or
5
 DLATTT LLDDf  1
EDDf TTT  
Maximum of
Calculate Total Thrust
6
 MPa
Area
Tf

Calculate Compressive Stress
at ULS
Area = area of selected plate thickness
(mm2/mm)
7 Calculate Wall Strength in
Compression – fb (MPa)
• Calculating the factored failure
compressive stress fb
• Dependent u...
7 Calculate Wall Strength in
Compression






 30 log2.06.1
RE
EI
m

  















2
'
1...
8 Check Wall Strength
Requirements During
Construction
• Forces experienced during construction of
long span structures ca...
8 Check Wall Strength
Requirements During
Construction
P = unfactored axial thrust = TD +TC
Ppf = factored compressive str...
8 Check Wall Strength
Requirements During
Construction
3
11 hBM DRkM 
chBMB HDRkM 2
2 
ChLMC LDRkM 3
Introduces 9 ne...
9 Check Wall Strength of
Completed Bridge-Plate
Tf = maximum thrust due to factored loads
Ppf = factored compressive stren...
10 Check Seam Strength
Sjf ST 
• The calculated maximum thrust due to
factored loads shall be less than the
factored res...
CHBDC FORMULA LIMITATIONS
• Box Culverts – maximum span
• All other shapes – single radius structures
• Standard Highway L...
Vertical Stress Contours
Horizontal Stress Contours
Axial Force Diagram
Bending Moment Diagram
Crown
Deflection
4.5 mm Maximum
Time
STRUCTURAL DESIGN - SUMMARY
• Wall is predominately in compression for arch structures
• Bending moments developed in box-...
Design Life – Design for
Durability
3
DEFINITIONS
Design Life
• A period of time specified by the Owner during which a structure is
intended to remain in servic...
PLATE COATINGS OPTIONS
Hot Dip Galvanized
Variable zinc weights (thicknesses)
Provides cathodic protection of steel
Zinc w...
Performance Guideline
56
www.cspi.ca
Structural Plate Coatings
Environmental
Parameter
Suggested Limits
Galvanized Steel
Suggested Limits for Polymer
Coated St...
Coatings – Hot Dip Galvanized
Nominal
Plate
Thickness
(mm)
Standard Zinc Coverage Non-Standard Zinc Coverage
Total Mass
Bo...
Zinc and Carbon Steel Corrosion
Material Period
AASHTO Standard
Loss Rate/year/side
(µm)1
UK Non-Aggressive
Loss Rate/year...
POLYMER COATING
STRATA-CAT
• Bonded chemically to the steel preventing
delamination
• Provides a 10 mil barrier between th...
GALVANIZED & POLYMER COATED
POLYMER COATING
www.armtec.com
CAT = Corrosion
Arresting Technology
Projects & Applications4
CULVERT DESIGN 201
Project Installations and Applications
Northeast Anthony Henday – Edmonton, AB
• Project Requirements:
Corrugated Arch protection
of 5 critical oil carrying
pipe...
UTILIDOR PROTECTION
•
•
Project Drawing Snapshots:
• 47H SRA Bridge-Plate DCSP
(Deep Corrugated Structural Plate)
• 12750m...
DCSP UTILIDOR PROTECTION COVER
• Foam blocking to reduce
settlement of the embankment.
• Embankment settlement /
adverse e...
DCSP C/W REINFORCING RIBS
•
•
• Heavy Haul Road Crossing
• Design - 8mm thk corrugated
shell c/w 8mm reinforcing ribs
spac...
DCSP C/W REINFORCING RIBS
Albian Sands (2010) Ft. McMurray, AB
• Reinforcing ribs were continuous around
the arch from foo...
DCSP C/W REINFORCING RIBS
Albian Sands – Ft. McMurray, AB
• 13 m span x 10 m rise
• Max. height of cover = 4.5 m
• Tallest...
DCSP – RAILWAY LOADING
• Full periphery structure
• 6615mm Diameter (50H) Bridge-
Plate Round Pipe
• 72.08 m Long
• All pl...
DCSP – RAILWAY LOADING
•
•
• Designed to handle 5
railway lines over (Cyclical
loading)
• Design Parameters: Cooper
E80 & ...
DCSP – RAILWAY LOADING
•
•
• Critical Backfill zone design
= ½ Dia. min. each side of
the structure to finished
cover
• Cr...
DCSP – RAILWAY LOADING
• Designed for small
vehicle access (Not a
stream crossing)
Loading Facility Hardisty, AB
MULTIPLE STRUCTURES
•
• • DCSP Structure and
Pedestrian Underpass
• Designed to CL-800
loading
Quarry Park, Calgary, AB
MULTIPLE STRUCTURES
• 1500mm Spacing between
structures
• Spacing required to provide
adequate room for placement and
comp...
STRUCTURAL PLATE – DURABILITY
• Armtec Multi Plate Ventilation
Plenums c/w Polymer Coating
(StrataCAT) and Fabricated
Elbo...
DURABILITY
•
•
• Fabrication was handled
in house to provide a full
site solution
LOW HEADROOM DESIGN
Pipestone Creek, County of Wetaskiwin, AB
Objective
• Replacement for existing timber
bridge in rural ...
LOW HEADROOM DESIGN
Pipestone Creek, County of Wetaskiwin, AB
• Aluminum Box Culvert was
selected
• 10.6m Span X 3.4m Rise...
ALUMINUM BOX CULVERT
Other site challenges:
Roadway Superelevation – this required attention by the
consultant in order to...
ALUMINUM BOX CULVERT
• Live load vehicle: CL 800
loading
• Cover = min. 750mm max
1200mm
• Aluminum Headwall and
Wingwalls...
ANIMAL OVERPASSES
•
•
• Twin Structures 16.7m
span arches for the
Trans Canada designed
as use for animal
overpasses.
• Ke...
BRIDGE-PLATE ANIMAL OVERPASSES
Location: Banff / Lake Louise Hwy AB
• 17 m span and 7.0 mm plate – barely more than a
¼-in...
ANIMAL OVERPASSES
• End treatments are MSE
precast face wall panel
(RECo).
• Studies have shown that these
overpasses are ...
UNBALANCED LOADING
• Unbalanced loading
conditions
• Designed using Finite
Element Analysis (FEA)
• 1500 mm min. cover.
• ...
UNBALANCED LOADING
58H Bridge-Plate Horizontal Ellipse
1st Challenge: Determine a suitable
grade slope
• Steep grade slope...
UNBALANCED LOADING
•
•
58H Bridge-Plate Horizontal Ellipse
2nd Challenge: Manufacturing
• Curving 8mm Bridge-Plate to a ti...
UNBALANCED LOADING
•
•
58H Bridge-Plate Horizontal Ellipse
3rd challenge: Assembly and Fit
• Test rings were assembled at ...
UNBALANCED LOADING
The Best Solution … Horizontal Ellipse Structure
UNBALANCED LOADING
The Test Fit
UNBALANCED LOADING
Assembly
UNBALANCED LOADING
Backfill
UNBALANCED LOADING
World’s 1st ever Bridge-Plate Horizontal Ellipse!
AVALANCHE PROTECTION – ROGERS PASS
1960 construction – 2012 photo
UNIQUE STRUCTURE DESIGNS
• Bridge-Plate c/w full invert and footing
plates eliminates cast-in-place footings
• Provides a ...
FLEXIBLE SOIL STEEL STRUCTURES
Contact Your Local Sales Rep:
www.armtec.com/sales-offices/
Todays Speakers:
Randy McDonald
Randy.McDonald@armtec.com
Fran...
UPCOMING WEBINARS
For more info please visit
www.armtec.com/events
Remember – For CPD
certificates, send names & emails
to...
STAY CONNECTED!
Armtec respects your privacy. All communications comply with CASL and general best
practices. For more inf...
Keep it Flowing! – Culvert Design 201 – Structural
Design, Durability & Installation
QUESTIONS?
Contact Your Local Sales Rep:
www.armtec.com/sales-offices/
Todays Speakers:
Randy McDonald
Randy.McDonald@armtec.com
Fran...
Upcoming SlideShare
Loading in …5
×

Keep it Flowing! Culvert Design 20: Design, Durability & Applications

961 views

Published on

Randy McDonald, Armtec Drainage’s Director of Engineering and Frank Klita, Senior Sales Representative, for the exciting second part of our 2-part Culvert series – Culvert Design 201! This presentation will build on the basics of culvert design covered in Culvert Design 101 and will focus in- depth on the structural design of culverts. Additionally, the presenters will review considerations and best practices for culvert installations.

What You'll Learn
Culvert types & applications
Structural design of culverts and buried structures as per CHBDC (Canadian Highway Bridge Design Code) methods
Installation best practices
Review of applications across Canada

Published in: Engineering
  • Be the first to comment

Keep it Flowing! Culvert Design 20: Design, Durability & Applications

  1. 1. Randy McDonald, P.Eng. Director of Engineering Armtec Drainage Solutions Frank Klita Sales Representative Armtec Drainage Solutions Randy McDonald, P.Eng. Director of Engineering Armtec Drainage Solutions Frank Klita Senior Sales Representative Armtec Drainage Solutions CULVERT DESIGN 201 STRUCTURAL DESIGN, DURABILITY & APPLICATIONS TECHNICAL WEBINAR THE BROADCAST WILL BEGIN SHORTLY FRIDAY DECEMBER 11, 2015 / 9AM PST / 11AM CST / 12PM EST
  2. 2. Randy McDonald, P.Eng. Director of Engineering Armtec Drainage Solutions Frank Klita Sales Representative Armtec Drainage Solutions Randy McDonald, P.Eng. Director of Engineering Armtec Drainage Solutions Frank Klita Senior Sales Representative Armtec Drainage Solutions FRIDAY DECEMBER 11, 2015 / 9AM PST / 11AM CST / 12PM EST TECHNICAL WEBINAR CULVERT DESIGN 201 STRUCTURAL DESIGN, DURABILITY & APPLICATIONS
  3. 3. YOUR HOST Janine Yetke Director of Marketing Armtec, Drainage Solutions LinkedIn: ca.linkedin.com/in/janineyetke/en Email: Janine.Yetke@armtec.com
  4. 4. JOIN THE DISCUSSION At any time during the presentation, please enter your questions into the Question Log
  5. 5. CPD CREDIT CERTIFICATES • Qualifies in Most Jurisdictions in Canada & USA for 1 Hour Technical Informal • Formal completion certificates are emailed within one week of attending • Check your local guidelines if unsure of your requirements Email your complete attendee list should there be multiple individuals viewing the same screen: • Full Name • Title • Email webinars@armtec.com Armtec will send certificate to all participants
  6. 6. Armtec is one of Canada’s largest infrastructure company supplying precast, corrugated steel and HDPE products and solutions. Every day, our proven products, engineered solutions and dedicated people are counted on to support construction and infrastructure projects in communities everywhere. With a national presence and a local focus on exceptional customer service, we are dedicated to building excellence. Actual 2014 Locations 43 Drainage Locations Precast Locations ABOUT ARMTEC
  7. 7. SECTORS Armtec specializes in all infrastructure markets and segments and can help with any project to ensure you have the right products for the job. Our people have extensive experience and access to resources all across the country, and can help with all facets of product selection, installation and support. Stormwater Solutions Mining & Energy Commercial & Retail Constructions Transportation Underground & Utility Infrastructure Sports & Entertainment Institutional Construction Industrial Construction Agriculture Commercial & Residential Landscaping Forestry Residential & Hospitality ABOUT ARMTEC
  8. 8. Armtec Drainage Solutions’ centralized engineering department consists of design engineers, a drafting team, and estimators. Additionally, professionally licensed Region engineers are located in all Market Areas across the country. DRAINAGE ENGINEERING SUPPORT & ROLES ABOUT ARMTEC
  9. 9. YOUR SPEAKERS Randy McDonald P.Eng. Director of Engineering Armtec, Drainage Solutions Randy.McDonald@armtec.com Frank Klita Senior Sales Representative Armtec, Drainage Solutions Frank.Klita@armtec.com
  10. 10. AGENDA 1. Overview - Segmental Plate Products for Buried Bridges 2. Buried Bridge Structural Design – Section 7 CSA S-6 CHBDC 3. Design Life - Designing for Durability 4. Projects and Applications
  11. 11. Segmental Plate Products1
  12. 12. Multi-Plate 152 x 51 Bridge-Plate 400 x 150 Tunnel Liner Plate 500 x 52 SPCSP AND DCSP
  13. 13. SHAPE OPTIONS
  14. 14. MULTI-PLATE SUPER-SPAN 14.4m span x 6.8m rise High Profile Arch
  15. 15. LARGEST SUPER-SPAN (1984) 18.0m span x 7.4m rise Low Profile Arch
  16. 16. DCSP Deep Corrugated Structural Plate • Bridge-Plate • 400 x 150 corrugation • Plates widths are 1200mm (3 corrugations) • Wider plates allow faster assembly times • 10 times greater stiffness than shallow corrugated plate products
  17. 17. BRIDGE-PLATE BOX CULVERT
  18. 18. Structural Design2
  19. 19. STRUCTURAL DESIGN Buried structures • two distinctly different materials that interact to create a complex composite geo-structural system to support the overburden and surface live loads 1. Soils encasing the buried shell 2. Corrugated Steel Shell
  20. 20. BURIED STRUCTURE COMPONENTS 20 • Soil Component: – engineered granular backfill envelope – materials of known geotechnical properties • Steel Component: – Corrugated steel shell – Corrugated shell is highly efficient member to support axial compressive loads • Net Result: – economical buried structure capable of supporting large gravity loads
  21. 21. STRUCTURAL DESIGN Load resistance of the composite system • highly influenced upon the geotechnical properties of the backfill materials encasing the buried structure Strength of the structure is dependent upon • Geometry of the buried steel shell • Stiffness /thickness of the selected plate corrugation .
  22. 22. STRUCTURAL DESIGN Force Analysis • Determine thrusts, moments and deflections during and post construction Strength Analysis • Determine resistance of the structure to support the calculated load effects Successful Design ensures: Resistance > Demand
  23. 23. STRUCTURAL DESIGN Load Definitions Dead Loads • Weight of the soil column directly above the footprint of the structure • Weight of the shell is included in FEA • Accurate soil densities are critical • Deep bury applications DL account for 100% of applied loads
  24. 24. STRUCTURAL DESIGN Live Loads (Surface Pressure) • Position as many axles of the design vehicle at the road surface above the conduit span • Distribute rectangular surface pressure through the overburden @ 1:1 in transverse direction, 2:1 in longitudinal direction
  25. 25. STRUCTURAL DESIGN 1 1 1 1
  26. 26. STRUCTURAL DESIGN Truck Loading • Highway Trucks – CL625, CL800 • 5 axles – 225 kN maximum axle load Extreme Live Loads • Haul Trucks – 6120 kN GVW (CAT 797B) • 2 axles – 4100 kN maximum axle load • E90 Cooper Railway Loading
  27. 27. STRUCTURAL DESIGN Railway Loading 80K AXLE LOAD = 355 kN 2526 kN Total
  28. 28. 250 TONNE HAUL TRUCK LIVE LOAD 12.4 m span x 5.6 m rise bridge-plate arch
  29. 29. STRUCTURAL DESIGN Earthquake Loads – Earthquake loads are limited to determining an additional thrust component known as TE – TE is equal to a percentage of the Dead Load Thrust (TD) – The percentage multiplier (AV) equals 2/3 of the horizontal ground acceleration ratio AH – Earthquake thrust is then summed with Dead Load Thrust (TD) x load factor – TE does not have to be considered with any other load combinations
  30. 30. 10 Step Design Process for Soil-Steel Structures 1 10
  31. 31. 5.0 6       v hh D DD 2 4.0       v h D D Minimum Cover (Hmin) is the largest of: a) 0.6 m b) c) Determine Minimum Cover For deep corrugated structures Hmin shall be smaller of 1.0m and the minimum depth of cover for structure with shallow corrugations but the same conduit size 1
  32. 32. Determine Minimum Cover1
  33. 33. Calculate Dead Load Thrust • TD = 0.5 (1.0 – 0.1 CS) Af W • W = weight of column of material above 2 )( 1000 parameterstiffnessaxial EA DE C vS S  TD/2TD/2
  34. 34. Calculate Dead Load Thrust • TD = 0.5 (1.0 – 0.1 CS) Af W • Af = arching factor 2 Span < Rise Span = Rise (round) Span > Rise
  35. 35. Calculate Live Load Thrust • Position as many axles of the CL-625 overtop as would give maximum total load 3   fLthL mlandDoflesserT 5.0  kPacrownatpressureLoadLiveL  loadinglanemultiforfactorificationmf mod
  36. 36. Calculate Earthquake Thrust AH varies from 0 to 0.40 in Canada 4 vDe ATT  ratioonacceleratizonalAwhereAA HHV  3 2
  37. 37. or 5  DLATTT LLDDf  1 EDDf TTT   Maximum of Calculate Total Thrust
  38. 38. 6  MPa Area Tf  Calculate Compressive Stress at ULS Area = area of selected plate thickness (mm2/mm)
  39. 39. 7 Calculate Wall Strength in Compression – fb (MPa) • Calculating the factored failure compressive stress fb • Dependent upon the NA radius              2 2 12Er KRF FFf y ymtb 2 3      r RK EF f mt b  eRR  eRR 
  40. 40. 7 Calculate Wall Strength in Compression        30 log2.06.1 RE EI m                    2 ' 1000 1 HHR R EE C C Sm                25.0 3 6.10.122.1 cmRE EI  25.0 3        RE EI K m    0.11000 5.0 '         cR HH  5.0 6          y e F E K r R  0.1 3.0 85.0        h m D S F 22.1 • To arrive at fb – 7 equations, 18 variables
  41. 41. 8 Check Wall Strength Requirements During Construction • Forces experienced during construction of long span structures can sometimes be greater than those values of the completed structure • Checks are made to ensure moments and thrusts induced during construction do not exceed the plastic moment capacity of the structure
  42. 42. 8 Check Wall Strength Requirements During Construction P = unfactored axial thrust = TD +TC Ppf = factored compressive strength = fhcAFy M = unfactored bending moment = M1 + MB + MC Mpf = factored plastic moment capacity = fhcMp 1 2          pfpf M M P P
  43. 43. 8 Check Wall Strength Requirements During Construction 3 11 hBM DRkM  chBMB HDRkM 2 2  ChLMC LDRkM 3 Introduces 9 new variables; kM1, kM2, kM3, RB, RL, NF, Ac, k4, Lc Also requires previous known variables; Dv, Dh, Es, E, I,
  44. 44. 9 Check Wall Strength of Completed Bridge-Plate Tf = maximum thrust due to factored loads Ppf = factored compressive strength = fhAFy Mf = maximum moment due to factored loads Mpf = factored plastic moment capacity = fhMp 1 2          pf f pf f M M P T  DLAMMMM LLDDDf  11 
  45. 45. 10 Check Seam Strength Sjf ST  • The calculated maximum thrust due to factored loads shall be less than the factored resistance of the longitudinal seams; SS = ultimate axial seam strength of bolted longitudinal seam
  46. 46. CHBDC FORMULA LIMITATIONS • Box Culverts – maximum span • All other shapes – single radius structures • Standard Highway Loading Analysis Options • Rigorous Method – i.e. Finite Element Analyses • Plaxis or CANDE are common software tools • Each stage of construction is modelled • Forces, moments & deflections captured for every stage
  47. 47. Vertical Stress Contours
  48. 48. Horizontal Stress Contours
  49. 49. Axial Force Diagram
  50. 50. Bending Moment Diagram
  51. 51. Crown Deflection 4.5 mm Maximum Time
  52. 52. STRUCTURAL DESIGN - SUMMARY • Wall is predominately in compression for arch structures • Bending moments developed in box-culvert structures • Able to sustain high thrusts because it is laterally supported against buckling by compacted engineered backfill envelope • Backfill provides a continuous and nearly elastic support to the conduit wall • Even after development of local buckling, soil-steel structures can have substantial post buckling capacity by dispersing load away from the member in distress to the surrounding backfill envelope • For segmental plate products, seam strength capacity of bolted plate laps can be governing design condition
  53. 53. Design Life – Design for Durability 3
  54. 54. DEFINITIONS Design Life • A period of time specified by the Owner during which a structure is intended to remain in service Durability • the capability of a component, product, or structure to maintain its function throughout a period of time with appropriate maintenance Predicted Service Life • an estimated period of time for the service life based on actual construction data, condition surveys, environmental characterization, or experience. Service Life • the actual period of time during which a structure performs its design function without unforeseen costs for maintenance and repair.
  55. 55. PLATE COATINGS OPTIONS Hot Dip Galvanized Variable zinc weights (thicknesses) Provides cathodic protection of steel Zinc weight is a function • materials thickness & chemistry and dipping time in the kettle. Polymer Coating Zinc Rich Base Coat + Ethylene Acrylic Acid Copolymer Top Coat
  56. 56. Performance Guideline 56 www.cspi.ca
  57. 57. Structural Plate Coatings Environmental Parameter Suggested Limits Galvanized Steel Suggested Limits for Polymer Coated Steel 50 year EMSL 75 year EMSL 100 year EMSL pH preferred range 5 – 9 3 – 12 4 – 9 5 – 9 Resistivity 2,000 – 8,000 ohm-cm >100 ohm cm >750 ohm cm >1,500 ohm cm Chlorides < 250 ppm NA NA NA Sulfates < 600 ppm NA NA NA Hardness > 80 ppm CaCO3 NA NA NA Table 21 Environmental Limits For Galvanized Steel and Polymer Coated Steel 1 Performance Guideline For Buried Steel Structures – Tech. Bulletin 13, CSPI Feb 2012
  58. 58. Coatings – Hot Dip Galvanized Nominal Plate Thickness (mm) Standard Zinc Coverage Non-Standard Zinc Coverage Total Mass Both Sides (g/m2) Thickness per side (µm) Total Mass Both Sides (g/m2) Thickness per side (µm) < 4.0 915 64 NA NA 4.0 – 8.0 915 64 1220 87 1 Performance Guideline For Buried Steel Structures – Tech. Bulletin 13, CSPI Feb 2012 Table 51 Zinc Coverage for Galvanized Structural Plate Products – CSA G401 Corrosion resistance is direct function of the coating mass (thickness)
  59. 59. Zinc and Carbon Steel Corrosion Material Period AASHTO Standard Loss Rate/year/side (µm)1 UK Non-Aggressive Loss Rate/year/side (µm)2 Zinc Coating First 2 years 15 4 Subsequently 4 4 Carbon Steel After Zinc Depletion 12 M=22.5ts 0.67 1 Performance Guideline For Buried Steel Structures – Tech. Bulletin 13, CSPI Feb 2012 Table 111 Zinc and Carbon Steel Soil Side Loss Rates 1AASHTO LRFD Bridge Construction Specifications 2UK Design Manual for Roads and Bridges ts is additional design service life in years after zinc depletion, M is the UK steel corrosion allowance after zinc depletion
  60. 60. POLYMER COATING STRATA-CAT • Bonded chemically to the steel preventing delamination • Provides a 10 mil barrier between the structure and the environment • Provides excellent corrosion resistance against diluted acids, salts & alkalis • Offers long term durability where extended service life is required
  61. 61. GALVANIZED & POLYMER COATED
  62. 62. POLYMER COATING www.armtec.com CAT = Corrosion Arresting Technology
  63. 63. Projects & Applications4
  64. 64. CULVERT DESIGN 201 Project Installations and Applications
  65. 65. Northeast Anthony Henday – Edmonton, AB • Project Requirements: Corrugated Arch protection of 5 critical oil carrying pipelines • Design loads: Dead load (embankment fill only) • 100 year design service life • Designed to CAN/CSA S6- 06 CHBDC UTILIDOR PROTECTION USING DEEP CORRUGATED STRUCTURAL PLATE
  66. 66. UTILIDOR PROTECTION • • Project Drawing Snapshots: • 47H SRA Bridge-Plate DCSP (Deep Corrugated Structural Plate) • 12750mm Span X 6370mm Rise • Structure Length 24.120m (C/L) • All plates 7.0mm thick • 915 gm/m² Galvanized Coating • 60 Degree Segmental Elbow (constructed from 8 mini-elbows)
  67. 67. DCSP UTILIDOR PROTECTION COVER • Foam blocking to reduce settlement of the embankment. • Embankment settlement / adverse effect buried metal arch (adds more load to the arch). • Max. height of cover = 6.0 m. Northeast Anthony Henday – Edmonton, AB
  68. 68. DCSP C/W REINFORCING RIBS • • • Heavy Haul Road Crossing • Design - 8mm thk corrugated shell c/w 8mm reinforcing ribs spaced at 2400 mm • Designed for two loaded CAT 797B Mine Trucks crossing at the same time. • One loaded CAT 797B = 1.4 million lbs. ! (635,000kg) Albian Sands (2010) Ft. McMurray, AB
  69. 69. DCSP C/W REINFORCING RIBS Albian Sands (2010) Ft. McMurray, AB • Reinforcing ribs were continuous around the arch from footing to footing for added compressive strength. • Designed with Finite Element Analysis (FEA) • Strongest Bridge-Plate section (8mm shell w/ full 8mm ribs) • During backfill the composite design of the ribs and shell allowed the structure to behave within the design parameters
  70. 70. DCSP C/W REINFORCING RIBS Albian Sands – Ft. McMurray, AB • 13 m span x 10 m rise • Max. height of cover = 4.5 m • Tallest Bridge-Plate arch (high profile shape) ever supplied by Armtec
  71. 71. DCSP – RAILWAY LOADING • Full periphery structure • 6615mm Diameter (50H) Bridge- Plate Round Pipe • 72.08 m Long • All plates 5.0mm thickness • 1220 gm/m2 Galvanized Coating • CHBDC was used for main design using AREMA loading and impact factors. Railcar Loading Facility Hardisty, AB
  72. 72. DCSP – RAILWAY LOADING • • • Designed to handle 5 railway lines over (Cyclical loading) • Design Parameters: Cooper E80 & CL-800 Live Load • Unit weight of backfill = 22 kN/m³ Loading Facility Hardisty, AB
  73. 73. DCSP – RAILWAY LOADING • • • Critical Backfill zone design = ½ Dia. min. each side of the structure to finished cover • Critical zone material - engineered well graded granular compacted to minimum 95% SP density • 2.0m Height of Cover Loading Facility Hardisty, AB
  74. 74. DCSP – RAILWAY LOADING • Designed for small vehicle access (Not a stream crossing) Loading Facility Hardisty, AB
  75. 75. MULTIPLE STRUCTURES • • • DCSP Structure and Pedestrian Underpass • Designed to CL-800 loading Quarry Park, Calgary, AB
  76. 76. MULTIPLE STRUCTURES • 1500mm Spacing between structures • Spacing required to provide adequate room for placement and compaction of granular material • Small sized compaction equipment • 200mm layered lifts to 95% SPD Quarry Park, Calgary, AB
  77. 77. STRUCTURAL PLATE – DURABILITY • Armtec Multi Plate Ventilation Plenums c/w Polymer Coating (StrataCAT) and Fabricated Elbows. • 4450mm Dia. • StrataCAT chosen due to the corrosive potash environment • Interesting Fact - both ends were supplied with pre- attached mounting flanges Air Intake Application – Potash Mine, Esterhazy SK
  78. 78. DURABILITY • • • Fabrication was handled in house to provide a full site solution
  79. 79. LOW HEADROOM DESIGN Pipestone Creek, County of Wetaskiwin, AB Objective • Replacement for existing timber bridge in rural Alberta. • Consultant / Owner looking for a single opening & cost effective structure versus a multiple culvert pipe installation. Challenges • Low headroom at site • Potentially corrosive water. • Live load Design Vehicle CL-800 in event of detour from Hwy 2 (Edm to Calgary).
  80. 80. LOW HEADROOM DESIGN Pipestone Creek, County of Wetaskiwin, AB • Aluminum Box Culvert was selected • 10.6m Span X 3.4m Rise X 17.8m long • All plates: 6mm thick Aluminum • Full Corrugated Invert and Footing Plates: Aluminum • Reinforcing Ribs required for both Haunch & Crown • Foundation required a full width granular bed densely compacted was to 98% SPD. • Minimum required bearing capacity of foundation = 290 kPa
  81. 81. ALUMINUM BOX CULVERT Other site challenges: Roadway Superelevation – this required attention by the consultant in order to achieve the minimum specified covers and to not exceed the maximum cover. Solution was the Aluminum Box.
  82. 82. ALUMINUM BOX CULVERT • Live load vehicle: CL 800 loading • Cover = min. 750mm max 1200mm • Aluminum Headwall and Wingwalls Pipestone Creek, Wetaskiwin, AB
  83. 83. ANIMAL OVERPASSES • • • Twin Structures 16.7m span arches for the Trans Canada designed as use for animal overpasses. • Keeping the driving lanes and wildlife safe is the main purpose of these bridges Location: Banff / Lake Louise Hwy AB
  84. 84. BRIDGE-PLATE ANIMAL OVERPASSES Location: Banff / Lake Louise Hwy AB • 17 m span and 7.0 mm plate – barely more than a ¼-inch of steel. • Up to 3 m of soil cover.
  85. 85. ANIMAL OVERPASSES • End treatments are MSE precast face wall panel (RECo). • Studies have shown that these overpasses are successfully diversifying the bear population. Location: Banff / Lake Louise TCH, AB
  86. 86. UNBALANCED LOADING • Unbalanced loading conditions • Designed using Finite Element Analysis (FEA) • 1500 mm min. cover. • 1:4 slope across the top of the structure Whistler BC, 2010 Winter Olympics
  87. 87. UNBALANCED LOADING 58H Bridge-Plate Horizontal Ellipse 1st Challenge: Determine a suitable grade slope • Steep grade slopes are a “no-no” over flexible soil-steel structures • Structure wants to “roll” due to unbalanced dead load weight, inducing bending in shell wall • Hand calculations were able to predict a suitable grade slope; FE analysis confirmed it Displacement diagram (from Plaxis)
  88. 88. UNBALANCED LOADING • • 58H Bridge-Plate Horizontal Ellipse 2nd Challenge: Manufacturing • Curving 8mm Bridge-Plate to a tight (2400mm) radius can be a challenge • Several combinations of plate layouts were created before arriving at final layout Plate layout of 58H Horizontal Ellipse
  89. 89. UNBALANCED LOADING • • 58H Bridge-Plate Horizontal Ellipse 3rd challenge: Assembly and Fit • Test rings were assembled at an off-site yard • After some challenges, an assembly method was developed to prevent “creeping” of the BP dimensions Assembly instructions
  90. 90. UNBALANCED LOADING The Best Solution … Horizontal Ellipse Structure
  91. 91. UNBALANCED LOADING The Test Fit
  92. 92. UNBALANCED LOADING Assembly
  93. 93. UNBALANCED LOADING Backfill
  94. 94. UNBALANCED LOADING World’s 1st ever Bridge-Plate Horizontal Ellipse!
  95. 95. AVALANCHE PROTECTION – ROGERS PASS 1960 construction – 2012 photo
  96. 96. UNIQUE STRUCTURE DESIGNS • Bridge-Plate c/w full invert and footing plates eliminates cast-in-place footings • Provides a quick economical installation. • Ideally suited for remote locations Bridge-Plate Box c/w Full Invert Scour Plates Mini-Span Bridges • Mini-Spans are pre-engineered and pre- assembled structures • Available Up to 3660 mm Span • Ideally suited for Resource road crossings ‘Designed for L-Series logging truck loading’ L-75, L-100, L-150, and L-165
  97. 97. FLEXIBLE SOIL STEEL STRUCTURES
  98. 98. Contact Your Local Sales Rep: www.armtec.com/sales-offices/ Todays Speakers: Randy McDonald Randy.McDonald@armtec.com Frank Klita Frank.Klita@armtec.com
  99. 99. UPCOMING WEBINARS For more info please visit www.armtec.com/events Remember – For CPD certificates, send names & emails to webinars@armtec.com! NEW PRODUCT LINE FROM ARMTEC! Introducing Hauraton Surface Drainage - February and March, 2016
  100. 100. STAY CONNECTED! Armtec respects your privacy. All communications comply with CASL and general best practices. For more information, you can find links to privacy policy and options to unsubscribe in footer of any emails. On Social Media On armtec.com Webinars Follow us! After the webinar fill out our survey and click yes! Fill out the form at armtec.com and stay up to date on the latest /armtecltd /ArmtecLtd /company/armtec See our presentation on SlideShare and YouTube!
  101. 101. Keep it Flowing! – Culvert Design 201 – Structural Design, Durability & Installation QUESTIONS?
  102. 102. Contact Your Local Sales Rep: www.armtec.com/sales-offices/ Todays Speakers: Randy McDonald Randy.McDonald@armtec.com Frank Klita Frank.Klita@armtec.com

×