cts ®/ ibo® hollow bar · cts®/ibo® hollow bar • soil nails • micropiles • anchors soil...

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CTS ®/ IBO® Hollow Bar

Con-Tech Systems was founded in 1985 and is a

family owned company. Since inception not only have we remained close to our roots with our innovative

Strand and Bar products, but we have also developed and promoted many other unique and innovative products, including introducing the CTS®/IBO® Hollow Bars to

the North American market, to allow our customers to

complete a variety of many difficult projects.

With this wide selection of products still available to our customers today we are able to service not only large international contractors but also small owner operators.

Through our several production plants and offices located across Canada and the USA; from British Columbia to Ontario, from Washington State, to North Carolina and Florida, we are able to service any of your project needs.

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Contents:

Company Introduction:

CoverCompany Profile......................................... CTS®/IBO® Hollow Bars.............................. Page 3Our Commitment/Applications.................. Page 4Typical Applications.................................... Page 5Applications................................................ Page 6Application Details...................................... Page 7Advantages................................................. Page 8Installation.................................................. Page 9 CTS®/IBO® Hollow Bar Tech Data............... Page 10CTS®/IBO® Hollow Bar Tech Data............... Page 11Corrosion Protection.................................. Page 12Sacrificial Steel Loss Tech Data................... Page 13Drill Bits...................................................... Page 14Indicative Grout Body Diameters................ Page 15Accessories................................................. Page 16-17Project photo Gallery.................................. Page 18-19Back Cover: Contact Information

CTS®/IBO® Hollow Bar

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CTS®/IBO® Hollow Bars:

The CTS®/IBO® (Injection Bore) Hollow Bars were introduced into North America by Con-Tech Systems Ltd. CTS®/IBO® ground engineering solutions provide engineers in the construction and civil engineering industries with a new dimension in structural and geotechnical reinforcement, retention and stabilization techniques.

The CTS®/IBO® ground engineering solutions utilize a hollow steel bar which has a continuous thread running along its external surface. A suitable drill bit is fitted to the end of the bar to penetrate the structure or material requiring stabilization and a drill rig is used to install the bar into the desired position. Grout is injected through the hollow bar and ejected from apertures in the drill bit during the drilling. Pressure then forces the grout back along the outside of the bar to form a strong, monolithic stabilizing structure while improving the surrounding ground.

CTS®/IBO® ground engineering techniques provide solutions for anchor, soil nail, pile, rock bolt or ground improvement applications, with a wide variety of bar sizes, drill bits and accessories available to suit every requirement and condition.

The versatility of the CTS®/IBO® solution is evident in the number and variety of projects on which it has been used, often providing a more economical, efficient and effective alternative to traditional drilling and engineering methods.Expert technical advice on product selection and scheme design is always available from Con-Tech System’s qualified engineers.


Phoenix Sky Harbour Airport Terminal 4 Expansion

• Contractor: Scheffler Nevada Corp.• Location: Phoenix, AZ

CTS®/IBO® Micropile Foundation.

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Our Commitment:

Con-Tech Systems is committed to providing our customers with the best quality products and service. We take pride in our strict production process which ensures full customer satisfaction from the moment an order is placed. We have highly trained, professional staff that assist you in selecting the right product for your application.

• Micropiles

• Soil Nails

• Anchors

Typical Applications:


Woodbridge NJ

Princeton

Atlantic Yards

Devil’s Slide Repair

Albany Medical Center

Kent Ave., Brooklyn NY

Kent Ave., Brooklyn NY Berth 14, Newark, NY

Berth 14, Newark, NY

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Typical Applications:


Low Level Road, North Vancouver in progress, ... and after completion

Quartz Creek Bridge Foundation Repair

Quartz Creek Bridge

Salmon River Project. Idaho

Quartz Creek Bridge Anchor Testing

Exhumed Pile,

NYC

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Applications:CTS®/IBO® Hollow Bar

• Soil Nails

• Micropiles

• Anchors

Soil Nailing is a method of earth reinforcement. It is a very economical process which allows a controlled improvement of the natural stability of the soil. CTS®/IBO® Hollow Bar Soil Nails provide friction, shear and tension strength in loose materials, combining all into a new monolithic structure.

A micropile is a small-diameter, drilled and grouted non-displacement pile in which most of the applied load is

resisted by the steel reinforcement. A micropile can

work in either tension or compression applications. CTS®/IBO® Hollow Bar Micropiles are a simple, one

step solution since the drilling element is also the grout conduit and the steel reinforcement element of the

pile. The micropile is usually connected to the structure

via a pile cap and is perfect for structural repairs and underpinning.

An Anchor is a steel element that is grouted into the ground and is stressed against a structure to resist movement. The CTS®/IBO® Hollow Bar Anchors can

be fitted with special bond breaker material to enable the load transfer to the bond length.

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Application Details: CTS®/IBO® Hollow Bar

Micropile Anchor Soil Nail

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Advantages of CTS®/IBO® Hollow Bar:

Example of a Reticulated Micropile Wall• Owner: CN Rail• Contractor: Geo-Foundations Contractors Inc.• Location: Ontario, Canada

Installation of an array of 125 micropiles 39.4’ (12 meters deep), with half of them vertical while the other half are inclined towards the core of the embankment. The piles are then tied to a 203’ (62 meter) long reinforced concrete beam.

This project was completed without any interruption to the rail traffic.

Geotechnical Benefits:• Extremely low settlement characteristics • Enhanced mechanical bond with surrounding ground (ground improvement)• Minimal disturbance during installation• Works in compression and tension

Material Benefits:• No requirement for double corrosion protection in permanent works• On site fabrication provides design flexibility• Wide variety of drill bits to suit different ground conditions• CTS®/IBO® Hollow Bars provide a range of working loads.

Production Benefits:• Single step casing free operation significantly improves productivity• Suitable for difficult and restricted access situations• Ability to use smaller drilling rigs reduces mobilization costs• Dramatically increased production rates• Permits top down mini jet grouting in saturated clays and silts complete with reinforcing bar• Remote de-coupling unit facilitates underwater piling from barges or drill platforms• No harmful vibrations or noise• Minimal spoil

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Installation:


The CTS®/IBO® Hollow Bar solution uses the hollow threaded bar as a conduit for either

air, water, or grout flushing mediums. The medium used is dependent on the ground conditions encountered. For example: rock would normally require air or water whereas

soft or collapsing ground would require grout.

Grout FlushingThen density of the grout is varied depending on the ground conditions; the greater the need to support the annulus the thicker

the grout required. Typically a W/C ratio of between 0.7 and 0.4 would be used.

The flushing head transmits the rotary and percussive forces from the drilling machine to the drill bit, while allowing continuous pumping of the flushing medium through the CTS®/IBO® Hollow Bar.

The flushing medium exits the apertures of the drill bit under pressure, creating a continuous pressure scouring action against the sides of the drill hole. This action exposes the harder parts of the hole while flushing and removing the softer parts to the surface therefore improving the surrounding ground.

When each bar has been drilled to depth

it is withdrawn back up the mast and then

re-drilled in a reaming action to improve cuttings return and increase the scouring of the grout flush.

Scouring creates a very rough, irregular shaped grout body with a much greater bond and friction to the soil, providing greater pull-out resistance and lower settlement characteristics.

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CTS®/IBO® Hollow Bar CTS®/IBO® Hollow Bar

CTS®/IBO® Hollow Bar Technical Data: PRODUCT SPECIFICATIONS

Bar Size Nominal DiameterEffective

Cross-Section

Load Capacity WeightLeft Hand

/ Right Hand

D Ø / INNER Ø Inside Outside Ultimate YieldD Ø G.U.T.S.

mm in in in² kips kips lbs./lf. Threadmm mm mm² kN kN kg/m

30/16 0.62 1.18 0.53 55.1 42.7 1.8 LEFT16 30 340 245 190 2.7

30/11 0.43 1.18 0.64 72.0 58.5 2.2 LEFT11 30 415 320 260 3.3

40/20 0.78 1.57 1.13 121.4 95.6 3.8 LEFT20 40 730 540 425 5.6

40/16 0.62 1.57 1.40 148.4 118.1 4.8 LEFT16 40 900 660 525 7.2

52/26 1.02 2.05 1.94 208.0 164.2 6.7 LEFT26 52 1250 925 730 9.9

73/53 2.08 2.87 2.50 260.8 218.1 8.9 RIGHT53 73 1615 1160 970 13.2

73/45 1.77 2.87 3.50 356.3 285.5 12.0 RIGHT45 73 2260 1585 1270 17.8

103/78 3.07 4.06 4.87 510.3 404.7 17.0 RIGHT78 103 3140 2270 1800 25.3

Please contact us for availability of the following sizes:73/35 1.38 2.87 4.20 419.3 321.5 14.2 RIGHT

35 73 2710 1865 1430 21.273/56 2.20 2.87 2.11 232.7 186.6 7.3 RIGHT

56 73 1360 1035 830 10.8103/43 1.69 4.06 9.34 934.1 763.9 31.8 RIGHT

43 103 6023 4155 3398 47.3103/51 2.00 4.06 8.80 822.8 600.3 30.0 RIGHT

51 103 5680 3660 2670 44.6127/103 4.05 5.00 5.39 521.6 456.4 19.4 RIGHT

103 127 3475 2320 2030 28.9196/130 5.12 7.72 25.11 2315.5 1607.8 85.7 RIGHT

130 196 16200 10300 7152 127.5Note: Subject to change without notice.

Imperial values converted from metric values; July 2010

ONE MORE SIZE? 08/04/2015

Other sizes available upon request

1 mm = 0.03937 in 1 m = 3.281 ft 1 kN = 0.225 kips 1 kN/mm2 = 145 ksi 1 kg/m = 0.672 lbs/ft

The CTS®/IBO® Hollow Bar type denotes external diameter of bar followed by its interal diameter.

For example, a IBO®/ T 30/16 Bar has an external diameter of 30mm and an internal diameter of 16mm.

KEY FEATURES:

1. Utilization of a CTS®/IBO® Hollow Bar as the reinforcing Bar. From the static point of view, a hollow bar is superior to a solid rod of the same cross sectional area with respect to bending moment, shear resistance and surface bond/friction.

2. The CTS®/IBO® Hollow Bar is manufactured from high quality structural steel.

3. The threads on the CTS®/IBO® Hollow Bar are

formed much like the ribs on a reinforcing bar fabricated according to ASTM-A-615. The deep IBO

/ T threads result in 2.4 times higher bond friction compared to standard drill steel rope-threads.

4. Continuous threads guarantee that the CTS®/IBO®

Hollow Bar can be cut or coupled anywhere along its length. A thread pitch of 6 degrees eliminates the need for locking nuts at each coupling.

5. Certified to ISO 9001.

For the most current technical information please go to our website: www.contechsystems.com

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Corrosion Protection:

The CTS®/IBO® Hollow Bar ground engineering products can be used in permanent applications if the correct installation and anchorage protection are utilized without any additional corrosion protection. the steel is very ductile and is not susceptible to stress, corrosion cracking, or hydrogen embrittlement.

Also, unlike Rope Thread (R-thread), the CTS®/

IBO® Hollow Bar T-Thread is coarse, widely spaced

and has a groove taken out of the crown. This thread type conforms to ASTM A615 and induces controlled cracking of the grout along the length of the bar.

To prevent corrosion from occurring, a crack width in the protective cementitious barrier must be less than 0.1 mm. Shear friction test in conjunction with crack width measurements have been carried out on the CTS®/IBO® Hollow Bar T-Thread. The

results have shown that the frequency of cracking within the grout body can be controlled to such an extent that the crack widths stay well below the permitted 0.1mm, along the anchor length including couplers. Identical tests have also been carried out using the R-thread product. However, the crack width was 0.2mm over the permitted 0.1mm, and therefore grout cannot be considered as an acceptable cementitious protective barrier on R Thread Bars.

If highly corrosive soil is encountered, Con-Tech Systems can provide the CTS®/IBO® Hollow Bar

product with STAINLESS steel. This will not corrode in extremely aggressive environments.

If you are uncomfortable that your anchorage head zone cannot be properly protected, the bars can be protected with metallic or epoxy coatings. We have also included the sacrificial loss table for the CTS®/IBO® Hollow Bar product for all of the

sizes and various soil conditions on the following page. This table is derived from the EN 14199.

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Sacrifical Steel Loss Technical Data Table 1:

Cross Section

Bar Size mm² Ground Aggressivity / Soil Types Diameter

loss [mm]

Reduced

area

% loss Diameter

loss [mm]

Reduced

area

% loss Diameter

loss [mm]

Reduced

area

% loss

undisturbed natural soils

(sand, silt, clay, schist, ...)0.60 316 7.18 0.90 304 10.71 1.20 292 14.19

polluted natural soil and industrial grounds 1.50 280 17.64 2.25 251 26.07 3.00 224 34.23

aggressive natural soil

(swamp, marsh, peat,...)1.75 270 20.48 2.50 242 28.82 3.25 215 36.90

non-compacted and non-aggressive fills (clay,

schist, sand, silt, ...)1.20 292 14.19 1.70 272 19.91 2.20 253 25.51

non-compacted and aggressive fills

(ashes, slag,...)3.25 215 36.90 4.50 171 49.79 5.75 129 61.96





(swamp, marsh, peat,...)1.75 345 16.91 2.50 316 23.80 3.25 289 30.48


schist, sand, silt, ...)1.20 366 11.72 1.70 347 16.44 2.20 328 21.07


(ashes, slag,...)3.25 289 30.48 4.50 244 41.13 5.75 203 51.20





(swamp, marsh, peat,...)1.75 632 13.41 2.50 592 18.96 3.25 552 24.39


schist, sand, silt, ...)1.20 662 9.27 1.70 635 13.04 2.20 608 16.76

non-compacted and aggressive fills (ashes,

slag,...)3.25 552 24.39 4.50 488 33.16 5.75 426 41.60





(swamp, marsh, peat,...)1.75 800 11.16 2.50 758 15.77 3.25 717 20.29


schist, sand, silt, ...)1.20 831 7.71 1.70 802 10.84 2.20 775 13.94


slag,...)3.25 717 20.29 4.50 652 27.61 5.75 588 34.65


(sand, silt, clay, schist, ...)0.60 1,206 3.53 0.90 1,184 5.28 1.20 1,162 7.01

polluted natural soil and industrial grounds 1.50 1,141 8.74 2.25 1,088 13.00 3.00 1,035 17.19


(swamp, marsh, peat,...)1.75 1,123 10.17 2.50 1,070 14.40 3.25 1,018 18.57


schist, sand, silt, ...)1.20 1,162 7.01 1.70 1,126 9.88 2.20 1,091 12.72


slag,...)3.25 1,018 18.57 4.50 933 25.36 5.75 851 31.96





(swamp, marsh, peat,...)1.75 1,426 11.73 2.50 1,346 16.67 3.25 1,267 21.55


schist, sand, silt, ...)1.20 1,485 8.08 1.70 1,431 11.40 2.20 1,378 14.70


slag,...)3.25 1,267 21.55 4.50 1,138 29.57 5.75 1,011 37.43





(swamp, marsh, peat,...)1.75 2,050 9.31 2.50 1,970 12.84 3.25 1,891 16.33


schist, sand, silt, ...)1.20 2,109 6.70 1.70 2,055 9.08 2.20 2,002 11.43


(ashes, slag,...)3.25 1,891 16.33 4.50 1,762 22.06 5.75 1,635 27.68





(swamp, marsh, peat,...)1.75 2,871 8.58 2.50 2,757 12.21 3.25 2,643 15.82


schist, sand, silt, ...)1.20 2,955 5.90 1.70 2,878 8.34 2.20 2,802 10.76


(ashes, slag,...)3.25 2,643 15.82 4.50 2,457 21.76 5.75 2,273 27.62





(swamp, marsh, peat,...)1.75 5,410 4.76 2.50 5,295 6.77 3.25 5,182 8.77


schist, sand, silt, ...)1.20 5,494 3.27 1.70 5,417 4.62 2.20 5,341 5.97


(ashes, slag,...)3.25 5,182 8.77 4.50 4,995 12.07 5.75 4,810 15.32

30/16 340

50 years 75 years 100 years

52/26 1250

73/53 1615

30/11 415

40/20 730

40/16 900

103/51 5680

73/45 2260

103/78 3140

Note: Table based on: EN 141991 mm = 0.03937 in

1 mm2 = .0015 sq in

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Accessories:

Accessories: Drill Bits

The CTS®/IBO® Hollow Bar offers a wide variety of accessories to complement the entire Hollow Bar range, providing the flexibility to install the bar in diverse ground conditions with a variety of drill bits to suit different applications. Our comprehensive range of accessories includes Couplers, Dome Nuts, Cen-

tralizers, Adaptor Bits, Wedge Discs and Flushing Heads.

Standard Cross Cut Bit Button Bit

Carbide Cross Cut BitClay Bit

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Indicative grout body diameters:

ANCHOR/PILE

TYPEDRILL BIT

DIAMETER

mm

ROCK

mm

COHESIVE

SOIL

SAND AND

GRAVEL-SAND

mm

MEDIUM AND

COARSE GRAVEL

mm

IBO® T30 hardened clay bit 75 100 125 150


IBO® T30 cross cut drill bit 76 100 125 150


IBO® T30 carbide cross cut drill bit 46 46

IBO® T30 button drill bit 51 51

IBO® T30 carbide button drill bit 51 51






IBO® T40 button drill bit 70 70











IBO® T73 carbide cross cut drill bit 130 130 155 180 205







* Note: Only if our installation procedures are followed as described.

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Accessories: Couplers & Dome Nuts


Coupler

Spherical Dome Nut

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Accessories: Centralizers, Wedge Discs, Flushing Head


Centralizer

Wedge Disc

Flushing Head

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Project Photo Gallery....


Sitka Dock, Alaska

Sitka Dock, Alaska

Salmon River Project, Idaho

Caltrans Highway 92

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TITAN THREAD

Version: MAY 2019

Memberships:

Website: www.contechsystems.com

Eastern Locations:Sales & Production: • Brockville, ON, Canada

Tel: 613-342-0041• Charlotte, NC, USA

Tel: 704-494-3989

Toll Free: 1-888-818-4826Email: [email protected]

Western Location:Sales & Production Plant:• 3736 South Tacoma Way, Tacoma, WA, 98409, USA Tel: 253-237-9008


Head Office: Sales & Production:• 8150 River Road, Delta, B.C. Canada V4G 1B5 Tel: 604-946-5571


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cts ®/ ibo® hollow bar · cts®/ibo® hollow bar • soil nails • micropiles • anchors soil...

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