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WHEELING, WV   26003
PHONE: (304) 905-8932

FAX: (304) 905-0154



International Manufacturer’s Representative Services


Specializing In


Tunnel & Mine Construction Applications


Below you will find a list of the various products and services that we provide to the North American tunneling market. This list can also be downloaded here. If you have any questions, please do not hesitate to contact us at the address listed below.


1.      Precast Concrete Segmental Tunnel Lining Manufacturing Components


         1.1        Optimas, Sofrasar Tunnel Products, Sarreguemines, France



                     1.1.1     Steel Bolts With Plastic Sockets - Up To 38 mm Ø

                     1.1.2     Steel Bolts With Steel Sockets - Up To 38 mm Ø

                     1.1.3     Grout/Lifting Insert Assemblies Inclusive Of:

                         Non-Return Valves Up To 10 Bar Resistance

                         Sealing Screw Caps Up To 40 Bar Resistance

                     1.1.4     Plastic Dowels For Circumferential Joint Connections

                         Sof-Fix FD – 40kN Pull-Out & 60kN Shear for small dia. tunnels            

                         Sof-Fix Anix – Up To 300kN Pull-Out & 300kN Shear

                         Bicones – Up to 500kN Shear

                     1.1.5     Radial Joint Connection Systems

                         Guide Rods – Up To 60mm Ø

                         Sof-RadLink Connection System

                     1.1.6     Utility Anchoring System Embeds


         1.2        CTS Cordes Tubes & Seals GmbH & Co. KG, Boizenbug, Germany



                     1.2.1     Standard EPDM Gaskets – Up To 44mm

                     1.2.2     Anchored EPDM Gaskets – Up To 44mm  (No Adhesive Required)

                     1.2.3     Special Gasket Materials For Hydrocarbons

                     1.2.4     Hydrophilic Gasket Profiles

                     1.2.5     Hydrophilic/EPDM Composite Profiles

                     1.2.6     TBM Tunnel Starter Seals


         1.3        Herrenknecht Formwork Technology Steel Segment Moulds

                     Schwanau, Germany         



                     1.3.1     Precision Steel Moulds For Casting Precast Segments

                     1.3.2     Carousel Plant Casting Systems Inclusive Of:

                         Plant Layout And Design

                         Concrete Handling And Vibrating Equipment

                         Segment Curing Systems

                         Segment De-moulding And Rollover Equipment

                         Gasket Application Equipment



2.      Tunnel Reinforcement Products


         2.1        Steel Rebar Reinforcement


2.1.1     Standard Fabricated Rebar Gr. 60 – 75 A625
2.1.2     Prefabricated Rebar Panels Gr. 60 - 75 A706
2.1.3     Special Rebar Reinforcement Stainless Steel Bar FRP Bar – For Tunnel Breakout Areas Epoxy Coated Bar


         2.2        Welded Wire Fabric Reinforcement


2.2.1     Standard Welded Wire Fabric 4"x 4", 6"x6" W2.1 – W4.0
2.2.2     Specialty Welded Wire Fabric Up to D36.0, Wire Spacing as Required
2.2.3     Supplied in Engineered Sheet Size to Minimize Waste Supplied Flat Supplied Prebent To Specified Radius


                     2.2.4     FRP Welded Wire Fabric


         2.3        Fiber Reinforcement – Steel and Polypropylene

                     Kosteel Bundrex



                     2.3.1     Precast Segmental Lining Reinforcement

                         Glued Fiber

                         Loose Fiber

                     2.3.2     Tunnel Final Lining Applications

                     2.3.3     Shotcrete Reinforcement


         2.4        Synthetic Fiber – Bi-Component

                     Contec Fiber AG – Switzerland



                     2.4.1     Concrix ES   50mm Length For Shotcrete

                     2.4.2     Concrix HS35   35mm Length For Precast

                     2.4.3     Supplied Bundled For Easy Handling And Dosing

                     2.4.4     Test Data For Long Term Creep Resistance Available



3.      Nittetsu “SuperFine” Ultrafine Cement


         3.1       SuperFine Cement From Nittetsu

                        - For Grouting In Advance Of Tunnel Excavation

                      - For Water Cut Off In Existing Tunnels

                      - For Other Geotechnical Water Cut Off Applications



4.      Rock Bolting and Anchoring Systems


         FiReP Rebar AG, Rapperswil, Switzerland



         4.1        FRP (Fiber Reinforced Polymer) Rock Bolts

4.1.1     Solid FRP Bolts – Available in 18 – 50 mm Ø

4.1.2     Self-Drilling Grouted FRP Bolts


                        4.2        FRP Special Application Bolts and Accessories

4.2.1     FRP Cablex Multi-Strand Cable Bolt   20m+

4.2.2     FRP Tielock Form Tie Bar

4.2.3     FRP Powermesh Reinforcing Fabric


                        4.3        FRP Soft-Eyes for Shaft Construction

4.3.1     Polyester or Vinylester Resin Reinforcement - Straight

4.3.2     Polyester or Vinylester Resin Reinforcement - Prebent



5.      Tunnel Scanning and Profiling Services


         Dibit Measuring Technique USA Inc. – Bellevue, WA

              Services Provided On A Subcontract Basis By Trained Technicians



         5.1        Tunnel Profiling And Documentation During Construction

                     5.1.1     Digital Recording Of Conditions Encountered

         5.1.2     Scanning Of Tunnel Excavation For "Tights"

         5.1.3     Documentation Of Placement Of Initial Support

         5.1.4     Documentation Of Placement Of Final Lining

         5.1.5    Electronic Record Of "As Built" Conditions


         5.2        Tunnel Profiling And Documentation Of Existing Structures

                     5.2.1     Digital Recording Of Existing Tunnel Condition

                     5.2.2     Scanning And Documentation Of Existing Tunnel Profile

                     5.2.3     Development Of An Electronic Record For Future Comparison



6.      Specialty Waterproofing and Grouting Services


         Renesco Inc., Moosseedorf, Switzerland / Chantilly, VA




         6.1        Installation Of Membrane Waterproofing Systems On Subcontracted Basis


         6.2        PVC and FPO (Hydrocarbon Resistant) Membrane System Installations


         6.3        HDPE and VLDPE Membrane System Installations


         6.4        Spray Applied Waterproofing Application


         6.5        Specialty Grouting and Injection Services on Subcontracted Basis

                     6.5.1     Cementitious Grouting

                     6.5.2     Chemical Grouting

                     6.5.3     Contact Grouting

                     6.5.4     Compensation Grouting



7.      Steel Forming Systems For Tunnels and Shafts


         Euroform S.r.l., Gessate (MI) - Italy



7.1        Steel Forms For Placement Of Tunnel/Shaft Final Linings

            7.1.1     Running Tunnel Lining Forming Systems

            7.1.2     Station And Tunnel Enlargement Forming Systems

            7.1.3     Shaft Lining Forming Systems

            7.1.4     Open Cut Tunnel Lining Forming Systems         



            8.         Specialty Designer/Consultant for Tunnel Construction Systems


                        Rowa Tunneling Logistics AG, Wangen, Switzerland



                        8.1        TBM Back-up Systems


                        8.2        Special Plants for Rock Support and Installation

                                    8.2.1     Grout Injection Plants

                                    8.2.2     Shotcrete Application Systems

                                    8.2.3     Work Platforms in Tunnels & Shafts

                                    8.2.4     Ring Beam Erectors


                        8.3        Logistics Systems for Supply and Muck Disposal

                                    8.3.1     Transportation Systems

                                    8.3.2     Rotary Dumps

                                    8.3.3     Special Locomotives for Inclines or Declines

                                    8.3.4     Special Cars for Muck, Grout, or Segments



9.      Tunnel Support Systems – Steel


         9.1        Cold Rolled Structural Rings & Arch Supports


         9.2        Liner Plates For Tunnel & Shaft Construction


         9.3        Special Fabricated Steel Structures & Liners


         9.4        Lattice Girders For NATM Tunnel Construction


         9.5        Steel Lagging & Decking


         9.6        Corrugated Structural Plate Portal Canopies



10.   Specialty Services


         10.1      Klug Construction Systems, LLC

                     D.R. Klug & Associates, Inc. is the exclusive marketing agent for Klug Construction Systems, LLC, a distributor of engineered reinforcement, geotechnical and support products used in underground heavy civil and mine construction projects.  Klug Construction Systems, LLC has an international customs broker that coordinates the shipment from foreign manufacturing plant to the project site in North America with minimum customer involvement.

                     Tel: 304-905-8957
Fax: 304-905-0154



11.   Contact Information


Jonathan D. Klug, Vice President
David R. Klug & Associates, Inc.
1994 Lumber Ave.

Wheeling, WV   26003
Tel: 304-905-8932
Fax: 304-905-0154
Cell: 304-281-4239


David R. Klug, President
David R. Klug & Associates, Inc.
1994 Lumber Ave.

Wheeling, WV   26003
Tel: 304-905-8932
Fax: 304-905-0154
Cell: 412-670-0263