ALMITA & SCREW PILE INTRODUCTION

Transcription

1 ALMITA & SCREW PILE INTRODUCTION Charlie Street Inside Sales Chris Boettcher Business Development Manager

2 Agenda Safety Moment Introduction of the Company What is a Screw Pile? Almita s Value Proposition Engineering and Design Fabrication Installation Equipment Various Applications shown through a series of project pictures

3 KEY TAKE AWAYS Screw piles have been around for nearly 200 years they are NOT new technology Screw pile applications have evolved and grown immensely in the past years There is real science behinds screw piles Almita is an expert in this field we have over 21 years of experience and our success stories highlight how varied that experience is

4 Biography Charlie Street I have being around Almita Piling Inc. since 2000 I have seen the screw pile industry go from 2 7/8 x 4 anchor piles (2000lb tension load) for service rigs, evolve to 20 x 40 (160,000lb compressive load) for the oil & gas industry. Duties at Almita Piling Inc. have included: Fabrication plant Installation of screw piles Shipping/receiving & inventory control Estimator Inside sales

5 About Almita Piling Inc. Almita engineers, manufactures and installs screw piles in a variety of industries and geographic markets. Screw pile foundations is our core business and we are Canada s leader in this area. We currently have approximately 240 employees including 10 engineers within the geotechnical and structural discipline. The Almita engineering group is continually testing and publishing papers, confirming the integrity of screw piles. Founding Member of IHPeng (Institute of Helical Pile Engineering) England, New Zealand and Japan. Sharing of information on engineering and design as it relates to screw piles with others around the world.

6 Almita Head office in Ponoka

7 Manufacturing Facility - Ponoka

8 Industries We Serve Each Industry has a dedicated & qualified representative Oil & Gas Oilsands Facilities and Plantsites Oilfield Leases Pipelines Power Transmission and Distribution Tower and Pole Base Foundations Substations Solar Panel & Wind Tower Foundations Commercial Construction Work-Camp & Office Trailer Structures Camp and Light Industrial Streetlight and Sign bases

9 SCREW PILE: structural elements that consist of one or more helical shaped circular plate(s) affixed to a steel central shaft. Installation Drive Holes PIPE SHAFT (Diameter and Wall Thickness) HELIX (Diameter and Thickness) PILE LENGTH Helix Pitch Helix Spacing 45 End Profile

10 Advantages of Screw Piles No tailings, rebar, anchor bolts or bore lining required No concrete curing time required Do not have to dewater casing Can be installed in all weather conditions Single stage installation Reclaimed with minimal ground disturbance No additional wall thickness required to facilitate installation Usually requires shallower embedment depths Reduced material cost and faster install times

11 ExxonMobil Kearl Lake Load Test Program

12 ExxonMobil Kearl Lake Site Comparison Between Measured and Estimated Capacities Axial Compression Test ID Pile Type Ultimate Capacity Estimated Ultimate Capacity (5%) Measured Prediction Ratio Shaft kn Helix(es) kn Total kn Shaft kn Helix(es) kn Total kn ST ST ST9 1A ST ST Type 1A - 273Ø pipe x 10m long c/w [25PL x 610Ø Helix] Type 3-324Ø pipe x 10m long c/w [25PL x 762Ø Helix] Type 4-324Ø pipe x 10m long c/w [25PL x 762Ø Helix x2] Type 5-406Ø pipe x 10m long c/w [25PL x 914Ø Helix] Type 7-508Ø pipe x 10m long c/w [25PL x 1016Ø Helix]

13 Helix Failure Testing At Bureau of Reclamation Structures Lab, in Denver, CO. 5 million pound load apparatus Generally followed ICC-ES AC358 for Helix testing

14 Helix Bending Model FEA (Finite Element Analysis)

15 Introduction to the design principles of Screw Piles

16 Helical (Screw ) Piles have been incorporated into the latest Edition of the CFEM -Almita was an advisor Section

17 Individual Helix Bearing Method Q t Qshaft i(bearing) Q Ultimate Compression Capacity (Qu) Shaft Diameter Soil Surface where Q t Q shaft = ultimate uplift capacity = adhesion developed along the steel shaft Q i(bearing) = sum of the bearing capacity of each individual helix Shaft Friction End Bearing Capacity of Individual Helixes

18 Compressive Capacity using Cylindrical Shear Method where Q C Q shaft Q helix Q C Q shaft Q helix Q = ultimate compressive capacity = adhesion developed along the steel shaft = shearing resistance mobilized along the cylindrical failure surface Q bearing = bearing capacity of the bottom helix bearing Ultimate Compression Capacity (Qu) Shaft Diameter Shaft Friction Helix Spacing Soil Surface Cylindrical Shearing Resistance End Bearing Resistance

19 Uplift Capacity of Helical Piles in CLAY Shallow Helix Q t A C 1 u Nu DaCu 3 H ( H ) 1 Qt AC 1 unu DaC u( H3 H1) Ps H1 where Q t = ultimate uplift capacity of the multi-helix screw pile H 1 = depth to top helix H 3 = depth to bottom helix D a = average helix diameter P s = perimeter of anchor shaft A 1 = area of top helix N u = uplift bearing capacity factor for cohesive soils C u = undrained shear strength of the clay C a = average cohesion of soil along the pipe shaft Deep Helix C a

20 Uplift Capacity of Helical Piles in SAND Shallow Helix Q ' '( 2 2 ) tan t HAFq Da H 3 H 1 Ku 2 Deep Helix P ' * '( 2 2 ) tan s 2 Qt HAFq Da H 3 H 1 Ku Heff ' Ku tan 2 2 where = friction angle of the soil A 1 = area of the top helix F q = uplift capacity factor for cohesionless soils H 1 = depth to top helix D a = average helix diameter D 1 = diameter of the top helix H 3 = depth to the bottom helix P s = perimeter of the screw pile shaft

21 Torque Method where K t = empirical factor T = average installation torque Q t K t = 33 m -1 for all square shafts and round shaft anchors less than 89 mm in diameter K t = 23 m -1 for 89 mm round shaft anchors K t = 9.8 m -1 for anchors with 219 mm diameter shafts K T t

22 HELIX DIAMETER vs. PIPE SHAFT

23 R&D and Testing 1D Accelerometer 3D Accelerometer A Leader in screw pile research with the of U of A & UWO Continual R & D of our product

24 Various Load Tests Compression Test Tension Test Lateral Tests

25 Introduction to Almita s fabrication principles of Screw Piles

26 Fabrication

27 WELDING Welding Conforms to CSA W59.1 and Almita is W47.1 with the Canadian Welding Bureau (CWB) Structural Steel Members shall conform to CSA S (Limit State Design) - Pipe (New) ASTM A252 Grade 2 or 3

28 Robotic Welding To improve both speed and quality Almita has invested in automating the Helix to Pipe weld.

29 Helix Press and Die Structural Steel Members shall conform to CSA S (Limit State Design) Plate (New) CSA G40.21 A36 or 44W

30 Almita s helical piles feature blades manufactured with a true helix shape. The leading and trailing edges of true helix blades are within one-quarter inch of parallel to each other and any radial measurement across the blade is perpendicular to the pile shaft. A true helix shape along with proper alignment and spacing of the blades is critical to minimize soil disturbance during installation. True Helix Duckbill Conversely, blades that are not a true helix shape are often pulled and not pressed into shape, creating a duckbill appearance. Pulled plates do not conform to the True Helix geometry requirements and their torque to capacity relationship is not well documented.

31 Almita s True Flight Helix 90 Helix is pressed such that at any point around the shaft the angle is 90. Helix will thread into soil, not churn or disturb.

32 Introduction to Almita s equipment for Screw Pile installation

33 List of Equipment

34 Small Skid Steer and Tracked Units

35 Installation Excavators

36 Agility and Mobility in restricted access locations

37 Batter Angles (from vertical to horizontal)

38 Extreme conditions! -35 C +35 C Muskeg Uneven Terrain

39 VARIOUS PROJECTS & APPLICATIONS

40 Residential Construction Garage Slab & Grade Beam

41 Residential Construction Decks

42 Residential Development Feature Wall

43 Residential Development Boardwalk

44 Residential Development Retaining Wall

45 Residential Construction Winter Installation

46 Solar Farm Arnprior, ON 5 install crews; ~350 piles/day installed; 65 Semi-Truckloads of materials; 26,000 piles installed in less than 4 months; Finished 17 days ahead of schedule.

47 Industrial Housing and Work Camps Typically install 8-10/hr. 114mm -178mm dia. pipe and usually 6-7m long. Project sizes range from a few 100 piles to >1000 piles.

48 Commercial - Steel Buildings

49 Elevated Pipeline Supports

50 Various Oil & Gas Applications More Uses: Pipe Racking Separators Flare Stacks De-Hydrators Compressors Facility Work Tank Farms Bullet Tank Pumpjacks

51 Oil & Gas Application - Pipelines Client: StatoilHydro Canada Location: Leismer, AB Conditions: Deep areas of Muskeg Over Clay Till, Bearing 10m

52 From Concept to Installation Elevated pipelines

53 324mm and 406mm pipes used for these 50-90kN Lateral Forces Pipeline Guide Posts

54 Piperacks

55 Elevated Supports Irathane pipeline, Suncor, Fort McMurray, AB 1360 piles in three Phases 324mm x 7m pipe c/w 25 x 610mm dia. Helix

56 Anchor Thrust Block

57 Transmission Tower

58 Tower Foundation Retro-Fit Manitoba Hydro Line

59 Tangent Pole Bases (Distribution)

60 Pile Groups on Tower Structures

61 QUESTIONS? Charlie Street Inside Sales Chris Boettcher Business Development Manager