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McMURRAY, PA 15317
PHONE: (724) 942.4670
FAX: (724) 942.4671



International Manufacturer’s Representative Services


Specializing In


Tunnel & Mine Construction Applications


We are currently in the process of updating our website. 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. Segmental Precast Concrete Tunnel Lining Manufacturing Components


         1.1        Gasket Sealing Systems


                     Dätwyler Sealing Technologies GmbH, Waltershausen, Germany




1.1.1 Standard EPDM Tunnel Gaskets
1.1.2 Special Tunnel Gasket Materials For Hydrocarbons
1.1.3 Co-extruded (two component) Tunnel Gasket Profiles
1.1.4 Hydrophilic Tunnel Gasket Profiles


         1.2        Connection/Grouting Systems


                     Anixter Fastners France, Sofrasar Tunnel Products, Sarreguemines, France




1.2.1 Steel Bolts With Plastic Sockets* Up To 38 mm Ø
1.2.2 Steel Bolts With Steel Sockets* Up To 38 mm Ø
1.2.3 Grout/Lifting Insert Assemblies Inclusive Of: Non-Return Valves Up To 10 Bar Resistance Sealing Screw Caps Up To 40 Bar Resistance Hydrophilic External O-Ring Seals


                     1.2.4 Plastic Dowels For Circumferential Joint Connections Sof-Clip Dowel To Concrete Sof-Fix Dowel To Plastic Embedment


                     1.2.5 Special Anchoring Systems For Divider Walls To Lining Connections For Rail Embedment To Concrete Connections


         1.3        Steel Moulds & Production Systems


                     Herrenknecht Formwork Technology, 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


         1.4        H-K Grout Bag Systems


Special Bags Installed To The Extrados Of Precast Segmental Linings And Inflated To Prevent Water Migration Behind The Precast Lining After Installation


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


3. Rock Bolting and Anchoring Systems


         FiReP Rebar AG, Rapperswil, Switzerland




         3.1        FRP (Fiber Reinforced Polymer) Rock Bolts


3.1.1 Solid FRP Bolts – Available in 25 – 40 mm Ø
3.1.2 Self-Drilling Grouted FRP Bolts


         3.2        FRP Accessories


3.2.1 FRP & Steel Nuts
3.2.2 FRP, Plastic, & Steel Bearing Plates
3.2.3 Spinning Tools & Grout Adapters


         3.3        Anchoring Materials 


3.3.1 Polyester Cartridges For Solid FRP Bolts
3.2.1 Cementitious Anchoring Grout For Self-Drilling Bolts


4. Tunnel Scanning And Profiling Services


         Dibit Measuring Technique USA Inc., Fairfax, VA - Services Provided On A Subcontract Basis By Trained Technicians




         4.1        Tunnel Profiling And Documentation During Construction           


4.1.1 Digital Recording Of Conditions Encountered
4.1.2 Scanning Of Tunnel Excavation For "Tights"
4.1.3 Documentation Of Placement Of Initial Support
4.1.4 Documentation Of Placement Of Final Lining
4.1.5 Electronic Record Of "As Built" Conditions


         4.2        Tunnel Profiling And Documentation Of Existing Structures


4.2.1 Digital Recording Of Existing Tunnel Condition
4.2.2 Scanning And Documentation Of Existing Tunnel Profile
4.2.3 Development Of An Electronic Record For Future Comparison


5. Flexible Membrane Waterproofing For NATM and Open Cut Tunnels


         Wisko America Inc. Tunnel Waterproofing, Chantilly, VA




         5.1        Installation Of Membrane Waterproofing On Subcontracted Basis


         5.2        PVC Membrane System Installations


         5.3        Hydrocarbon Resistant Membrane Installations


         5.4        Special Waterbarrier Grid System Applications To Various Membrane Types


         5.5        Special Installation Procedures For Cut & Cover Tunnels


         5.6        Membrane Joint Testing Procedures For All Applications


         5.7        Special Mobile Scaffolding Systems For Waterproofing Placement


6. Steel Forming Systems For Tunnels and Shafts


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




         6.1        Steel Forms For Placement Of Tunnel/Shaft Final Linings


6.1.1 Running Tunnel Lining Forming Systems
6.1.2 Station And Tunnel Enlargement Forming Systems
6.1.3 Shaft Lining Forming Systems
6.1.4 Open Cut Tunnel Lining Forming Systems
6.1.5 Custom Designed Forming Systems Designed To Meet Specific Project Requirements

                     6.1.6 On-site Engineering Services/Consultation Available


7. Specialty Designer/Consultant for Tunnel Construction Systems


         Rowa Tunneling Logistics AG, Wangen, Switzerland




         7.1        TBM Back-up Systems


         7.2        Special Plants for Rock Support and Installation


7.2.1 Grout Injection Plants
7.2.2 Shotcrete Application Systems
7.2.3 Work Platforms in Tunnels & Shafts
7.2.4 Special Lifting Platforms
7.2.5 Ring Beam Erectors


         7.3        Logistics Systems for Supply and Muck Disposal


7.3.1 Transportation Systems
7.3.2 Rotary Dumps
7.3.3 Special Locomotives for Inclines or Declines
7.3.4 Special Cars for Muck, Grout, or Segments
7.3.5 Wireless or Cable Train Track Surveillance Systems


         7.4        Consulting & Engineering Services


7.4.1 Construction Procedures / Methods
7.4.2 Construction Cycle Review & Development
7.4.3 Productivity Evaluation & Calculations
7.4.4 Installation Planning & Start-up Consultation
7.4.5 Cost Development & Comparisons
7.4.6 Risk Management Services


8. Tunnel Support Systems – Steel


         8.1        Cold Rolled Structural Rings & Arch Supports


         8.2        Liner Plates For Tunnel & Shaft Construction


         8.3        Special Fabricated Steel Structures & Liners


         8.4        Lattice Girders For NATM Tunnel Construction


         8.5        Steel Lagging & Decking


         8.6        Corrugated Structural Plate Portal Canopies


9. Cementitious Products

Surecrete Inc., Seattle, WA




         9.1        Ultra Fine Cements From Nittetsu/Surecrete 


9.1.1 For Grouting In Advance Of Tunnel Excavation
9.1.2 For Water Cut Off In Existing Tunnels
9.1.3 For Other Geotechnical Water Cut Off Applications


                        9.2        Prepackaged Shotcrete Mixes

                                    9.2.1 Manufactured To Meet Project Design Requirements


10. Fiber Reinforced Concrete


                        Maccaferri USA Inc., Williamsport, VA




                        10.1      Steel Fibers


10.1.1 For Shotcrete Reinforcement
10.1.2 For Precast Segmental Lining Reinforcement

                     10.1.3 For Tunnel Final Lining Applications


11. Specialty Services


         11.1      KSL Construction Systems, Inc.

                     D.R. Klug & Associates, Inc. is the exclusive marketing agent for KSL Construction Systems, Inc. a distributor of engineered reinforcement, geotechnical and support products used in underground heavy civil and mine construction projects.
Tel: 724-942-2450
Fax: 724-942-4671


         11.2      Consulting Services

D.R. Klug & Associates Inc. Performs Consulting Service For Employee Placement Requirements, Specialty Contractor & Designer Evaluation Services and Alternative Construction Methodology Practices, All Associated With Work To Be Performed In The Underground Heavy Civil and Mine Construction Industry


12. Contact Information


David R. Klug, President
David R. Klug & Associates, Inc.
6000 Waterdam Plaza Drive
Suite 120
McMurray, PA 15317
Tel: 724-942-4670
Fax: 724-942-4671
Cell: 412-670-0263


Jonathan D. Klug, Sales Engineer
David R. Klug & Associates, Inc.
6000 Waterdam Plaza Drive
Suite 120
McMurray, PA 15317
Tel: 724-942-4670
Fax: 724-942-4671
Cell: 304-281-4239