Skip to contentUnited States Department of Transportation - Federal Highway Administration FHWA Home
Research Home   |   Pavements Home
REPORT
This report is an archived publication and may contain dated technical, contact, and link information
Publication Number: FHWA-HRT-07-040
Date: October 2011

 

Falling Weight Deflectometer Calibration Center and Operational Improvements: Redevelopment of The Calibration Protocol and Equipment

APPENDIX E. SPECIFICATIONS AND DRAWINGS

SPECIFICATIONS

1. General specifications

1.1 Description

The FWD calibration hardware set includes one accelerometer box assembly, one geophone calibration stand assembly, one seismometer calibration stand assembly, one reference load cell assembly, and one ball-joint anchor assembly. In some cases, only one of the stands is ordered for a hardware set. Drawings of each item are included by reference as part of this specification. Table 13 shows a list of drawings for each assembly.

Table 13. Parts required for one hardware set.
Assembly Drawing Number
Accelerometer box assembly CLRP-AB01
Ball-joint anchor assembly CLRP-BJ01
Geophone stand assembly1 CLRP-GCS01
Seismometer stand assembly1 CLRP-SCS01
Geophone adapters assembly CLRP-GA01
Reference load cell assembly CLRP-LC01

1Indicates that in some cases, only one stand is ordered for a hardware set.

1.2 Materials

The required materials are described in the referenced drawings (see table 13).

1.3 Manufacturing Requirements/Conflicts

The contractor should provide all materials needed to manufacture one complete hardware set unless otherwise noted.

Additional manufacturing requirements are listed with the specifications for each individual part or subassembly. If there is a conflict between the drawings and the specifications, the specifications should govern.

1.4 Surface Smoothness

An industrial quality surface finish is desired. All machined surfaces should have a smoothness of 63 μ-inches (0.0016 mm) or less.

1.5. Mill Surface Finish

The mill surface finish on aluminum extrusions should be inspected for nicks, cuts, and dings, and a reasonable effort should be made to smooth out the defects before anodizing. Avoid removal of excessive amounts of material in this process.

1.6 Anodizing

Where anodizing is required on aluminum parts, all parts should be thoroughly cleaned and anodized according to MIL-A-8625F Type 2 Class 2 (Black). All parts should have a cosmetically homogeneous appearance after being anodized.

If for any reason parts must be stripped to remove the anodizing, a phosphoric chromic solution should be used, followed by surface polishing to remove pitting and achieve a 63-μ-inch (0.0016-mm) smoothness.

1.7 Loctite®

Where Loctite® is required, medium strength #242 Loctite® should be used.

1.8 Delivery/Acceptance

The contractor should provide a guaranteed delivery time. All parts should be assembled and delivered to the address provided by the purchasing agency.

The purchasing agency should have 7 days after delivery to check parts for proper alignment and fit as well as finish, as required. If the part or parts are not acceptable, the contractor should replace them at no additional charge.

1.9 Method of Payment

Payment should be authorized upon acceptance of the complete order.

2.0 Accelerometer Box Assembly Specifications (Drawing CLRP-AB01)

2.1 Description

The accelerometer box assembly is designed to house a Silicon Designs Model 2220 accelerometer as well as to provide some EMI shielding and additional physical protection. The box assembly mounts on the calibration platter, the geophone calibration stand, and the seismometer calibration stand by means of two #10-24 knurled head thumbscrews through the lip on the box.

2.2 Materials

All of the materials for the accelerometer box assembly are described in the referenced drawing and the bill of materials.

2.3 Manufacturing Requirements

The accelerometer box top and bottom, the box assembly, and calibration platter should be assembled together to ensure proper alignment prior to delivery to the customer. The accelerometer box top and bottom should also be fitted into the geophone calibration stand and the seismometer calibration stand, and the fit should be a firm coupling to both stands without any gaps or interference between mating surfaces.

Each aluminum part should be cleaned and then anodized in accordance with section 1.5. Upon delivery, the customer should finish assembly of the box by mounting the accelerometer and the Amphenol receptacle, mating the box top and bottom, mounting the bubble level, and attaching the leveling screws to the calibration platter.

3.0 Ball-joint Anchor Assembly Specifications (Drawing CLRP-BJ01)

3.1 Description

The ball-joint anchor assembly is the means by which the calibration stands are coupled to the test pad during FWD calibration. The clamp provides a solid mechanical connection to the calibration stand, and the Techno/Sommer KG60 ball-joint provides some rotational freedom, making the stands easier to use as well as providing for some moment compensation.

3.2 Materials

All of the materials for the ball-joint anchor assembly are described in the referenced drawing and the bill of materials.

3.3 Manufacturing Requirements

Upon delivery, the customer should finish assembly of the anchor by attaching the base bar and the clamp base to the ball-joint. The clamp should be attached to the clamp base, and the rest stop should be mounted to the anchor assembly.

4.0 Geophone Calibration Stand Assembly Specifications (Drawing CLRP-GCS01)

4.1 Description

The geophone calibration stand assembly is designed to hold up to 10 geophones from the Dynatest®, Carl Bro, KUAB, or JILS FWD. The accelerometer box (see section 2.0) mounts to the middle shelf in the stand. The stand is attached to the ball-joint anchor (see section 3.0) during the calibration procedure.

4.2 Materials

All of the materials for the geophone calibration stand are described in the referenced drawing and the bill of materials.

4.3 Manufacturing Requirements

Prior to welding the stand, the parts should be cleaned and dry fitted together. A qualified Tungsten inert gas (TIG) welder should perform all of the welding. After welding, the stand should be cleaned and then anodized in accordance with section 1.5.

After delivery, the customer should finish assembly by adding handles and bubble levels as needed and use Loctite® to keep the connector pin in place.

5.0 Seismometer Calibration Stand Assembly (Drawing CLRP-SCS01)

5.1 Description

The seismometer calibration stand assembly is designed to hold up to 10 KUAB seismometers in a 2-column configuration. Additionally, the accelerometer box (see section 2.0) mounts to the middle shelf in the stand. The stand is attached to the ball-joint anchor (see section 3.0) during the calibration procedure.

5.2 Materials

All materials for the seismometer calibration stand assembly are described in the referenced drawing and the bill of materials.

5.3 Manufacturing Requirements

Prior to welding the stand, the parts should be cleaned and dry fitted together. A qualified TIG welder should perform all of the welding. After welding, the stand should be cleaned and anodized in accordance with section 1.5.

After delivery, the customer should finish assembly by adding handles and bubble levels as needed and use Loctite® to keep the connector pin in place.

6.0 Geophone Adapter Specifications

6.1 Description

The geophone adapters are used to couple three different types of geophones to the geophone calibration stand (see section 4.0) and allow for ease of movement of the geophones within the stand.

6.2 Materials

All materials for the geophone adapters are described in the referenced drawing and the bill of materials.

6.3 Manufacturing Requirements

The geophone adapters should be dry fitted into the geophone calibration stand sensor shelves to ensure a loose sliding fit in the slotted hole on each shelf.

7.0 Reference Load Cell Assembly (Drawing CLRP-LC01)

7.1 Description

The reference load cell is a custom load cell designed specifically for FWD calibration. The load cell allows all brands of FWD to be calibrated with a 11.7-inch (300-mm) load plate.

7.2 Materials

All materials for the reference load cell assembly are described in the referenced drawings and bill of materials.

7.3 Manufacturing Requirements

Prior to welding the base to the body, the parts should be cleaned and dry fitted together. A certified TIG welder should perform all of the welding. After welding, the load cell parts should be cleaned and anodized in accordance with section 1.5, with the exception of the measuring links (Drawing CLRP-LC04), which should not be anodized.

After delivery, the customer should have the measuring links gauged by a qualified strain gauge installer. Then, the load cell should be fully assembled, conditioned, and calibrated according to AASHTO R33-03.(10)

COMPLETE DRAWING LIST

Table 14 provides a complete drawing list for the accelerometer box, ball-joint anchor, geophone calibration stand, seismometer calibration stand, geophone adapters, reference load cell, and data acquisition cables. The drawings follow in the same order in this appendix.

Table 14. Complete drawing list.
Drawing Number Part Name
CLRP-AB01 Accelerometer box assembly
CLRP-AB02 Accelerometer box bottom
CLRP-AB03 Accelerometer box top
CLRP-AB04 Calibration platter
CLRP-AB05 Accelerometer wiring
CLRP-BJ01 Ball-joint anchor assembly
CLRP-BJ02 Clamp
CLRP-BJ03 Clamp base
CLRP-BJ04 Base bar
CLRP-BJ05 Rest stop
CLRP-GCS01 Geophone stand assembly
CLRP-GCS02 Geophone stand side rail
CLRP-GCS03 Geophone stand top shelf
CLRP-GCS04 Geophone stand bottom shelf
CLRP-GCS05 Geophone stand sensor shelf
CLRP-GCS06 Geophone stand accelerometer shelf
CLRP-GCS07 Geophone stand handle holder
CLRP-GCS08 Geophone stand connector pin
CLRP-SCS01 Seismometer stand assembly
CLRP-SCS02 Seismometer stand side rail
CLRP-SCS03 Seismometer stand top shelf
CLRP-SCS04 Seismometer stand sensor shelf
CLRP-SCS05 Seismometer stand standoff
CLRP-SCS06 Seismometer stand bottom shelf
CLRP-SCS07 Seismometer stand handle holder
CLRP-SCS08 Seismometer stand connector pin
CLRP-SCS09 Seismometer stand shelf subassembly
CLRP-SCS10 Seismometer stand accelerometer shelf
CLRP-SCS11 Seismometer stand accelerometer shelf subassembly
CLRP-GA01 Geophone adapter assemblies
CLRP-GA02 Carl Bro adapter
CLRP-GA03 JILS adapter
CLRP-GA04 KUAB adapter
CLRP-LC01 Load cell assembly
CLRP-LC02 Load cell body
CLRP-LC03 Base plate
CLRP-LC04 Measuring link
CLRP-LC05 Cover plate
CLRP-LC06 Foot
CLRP-LC07 Guide fingers
CLRP-LC08 Interior connector wiring
CLRP-LC09 Strain gauge layout
CLRP-LC10 Bridge wiring
CLRP-DAQ01 Vishay to DAQ cable
CLRP-DAQ01A Vishay 2310B BNC to DAQ cable
CLRP-DAQ01B Vishay 2310B BNC to DAQ cable—stock parts
CLRP-DAQ02 Vishay to load cell DAQ cable
CLRP-DAQ03 Accelerometer signal cable
CLRP-DAQ04 Pushbutton to KUSB DAQ cable
CLRP-DAQ06 KUSB protection wiring
CLRP-DAQ07 KUSB enclosure rear panel
CLRP-DAQ08 KUSB enclosure front panel

ACCELEROMETER BOX

Figure 47. Photo. Accelerometer box. This photo shows a perspective view of an aluminum accelerometer box attached to an aluminum calibration platter. The accelerometer box is attached to the front of the platter by two knurled thumb screws. Three wing nuts attached to plastic feet are used to level the platter. A bubble level on the back left corner of the platter is used to confirm that the platter is level.

Figure 47. Photo. Accelerometer box.

Table 15. Fabricated parts required for BM-AB accelerometer box assembly.
Drawing Number Description Quantity
CLRP-AB02 Accelerometer box bottom 1
CLRP-AB03 Accelerometer box top 1
CLRP-AB04 Calibration platter 1
CLRP-AB05 Accelerometer wiring 1
Table 16. Hardware items required for BM-AB accelerometer box assembly.
Vendor Part Number Item Vendor Quantity
96877A209 Flat head Phillips machine screw, 18-8 SS, 4-40 thread, 38 -inch length, Mil Spec 51959-15 McMaster-Carr® 4
91400A110 Pan head Phillips machine screw, 18-8 SS, 4-40 thread, ½-inch length, Mil Spec 51957-17 McMaster-Carr® 2
91737A072 Fillister head Phillips machine screw,
18-8 SS, 4-40 thread, ¼-inch length
McMaster-Carr® 7
91746A876 Knurled head thumb screw, slotted, 18-8 SS, 10-24 thread, ½-inch length,
¼-inch head diameter, ½-inch length
McMaster-Carr® 2
91755A205 Retaining washer, Nylon 6/6, #4 screw size, 764-inch inside diameter, 1764-inch outside diameter, 0.027–0.037-inch thickness McMaster-Carr® 2
2198A85 Bull’s-eye level, glass, surface mount, center circle and cross lines, 1¼-inch base diameter, 716-inch height McMaster-Carr® 1
23015T64 Leveling mount, polyethylene base,
38-inch 16 thread, 50 lbf maximum load, 1-inch length
McMaster-Carr® 3
98520A145 Locking wing nut, zinc alloy, nylon insert, 38-inch 16 screw size, 1½-inch wing spread McMaster-Carr® 3
2220-005 Accelerometer, ± 5 g with calibration certificate Silicon Designs 1
654-PT02A106P Amphenol receptacle, PT02A-10-6P Mouser Electronics 1

1 inch = 25.4 mm
1 lbf = 4.45 N

Table 17. Vendor contact information for BM-AB accelerometer box assembly.
Vendor Web site Notes
McMaster-Carr® www.mcmaster.com See Web site for specific contact information located in the "About Us" section.
Silicon Designs www.silicondesigns.com 1445 NW Mall St, Issaquah, WA 98027
425-391-8329
Mouser Electronics www.mouser.com See Web site for specific contact information located in the "Contact Us" section.
Incodema www.incodema.com Incodema Inc.
407 Cliff Street, Ithaca, NY 14850
607-277-7070
Table 18. Hardware costs for BM-AB accelerometer box.
Part Quantity Supplier Cost1
Materials and machining 1 Incodema $912.00
Accelerometer (±5 g) 1 Silicon Designs $580.00
Miscellaneous hardware 1 $38.00

1Indicates the cost in February 2009.

Figure 48. Illustration. CLRP-AB01 accelerometer box assembly. This plan sheet drawing shows a top and front view of a Cornell Local Roads Program (CLRP)-AB01 accelerometer box on the calibration platter alongside an isometric view of the accelerometer box. Instructions and references are included to assemble the accelerometer box.

Figure 48. Illustration. CLRP-AB01 accelerometer box assembly.

Figure 49. Illustration. CLRP-AB02 accelerometer box bottom. This plan sheet shows front, bottom, and isometric views of the bottom piece of a Cornell Local Roads Program (CLRP)-AB02 accelerometer box. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 49. Illustration. CLRP-AB02 accelerometer box bottom.

Figure 50. Illustration. CLRP-AB03 accelerometer box top. This plan sheet shows front, bottom, and isometric views of a Cornell Local Roads Program (CLRP)-AB03 accelerometer box top. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 50. Illustration. CLRP-AB03 accelerometer box top.

Figure 51. Illustration. CLRP-AB04 calibration platter. This plan sheet shows front, top, and isometric views of a Cornell Local Roads Program (CLRP)-AB04 calibration patter. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 51. Illustration. CLRP-AB04 calibration platter.

Figure 52. Illustration. CLRP-AB05 accelerometer wiring. This plan sheet shows the wiring configuration for a Cornell Local Roads Program (CLRP)-AB05 accelerometer. This schematic is used to manufacture or specify the signal cable between the accelerometer and Vishay

Figure 52. Illustration. CLRP-AB05 accelerometer wiring.

BALL-JOINT ANCHOR

Figure 53. Photo. ball-joint anchor. This photo shows a perspective view of the ball-joint anchor assembly. A sheet metal cowling rest stop protects the purchased ball joint. A cylindrical aluminum clamp attached to the ball joint extends through a hole in top of the cowling. The bottom of the ball joint is attached to a metal base bar.

Figure 53. Photo. Ball-joint anchor

Table 19. Fabricated parts required for the BM-BJ ball-joint anchor assembly.
Drawing Number Description Quantity
CLRP-BJ02 Clamp 1
CLRP-BJ03 Clamp base 1
CLRP-BJ04 Base bar 1
CLRP-BJ05 Rest stop 1
Table 20. Hardware items required for the BM-BJ ball-joint anchor assembly.
Vendor Part Number Item Vendor Quantity
KG-60 Ball-joint Techno/Sommer 1
91292A145 Socket head cap screw, 18-8 stainless steel, M8 thread,
16-mm length, 1¼-mm pitch
McMaster-Carr® 6
91292A148 Socket head cap screw, 18-8 stainless, M8 thread, 25-mm length, 1 ¼-mm pitch McMaster-Carr® 2
91292A135 Socket head cap screw, 18-8 stainless steel, M6 thread,
16-mm length, 1-mm pitch
McMaster-Carr® 4

1 inch = 25.4 mm

Table 21. Vendor contact information.
Vendor Web site Notes
Techno/Sommer www.techno-sommer.com See Web site for specific contact information located in the "Sales Representatives" section.
McMaster-Carr® www.mcmaster.com See Web site for specific contact information located in the "About Us" section.
Incodema www.incodema.com Incodema Inc.
407 Cliff Street, Ithaca, NY 14850
607-277-7070
Table 22. Hardware costs for BM-BJ ball-joint anchor.
Part Quantity Supplier Cost1
Materials and machining 1 Incodema $919.00
Techno/Sommer KG60 Ball-joint 1 Techno/Sommer $143.00
Miscellaneous hardware 1   $31.00

1Indicates the cost in February 2009.

Figure 54. Illustration. CLRP-BJ01 ball joint anchor assembly. This plan sheet shows front, bottom, and side views of a Cornell Local Roads Program (CLRP)-BJ01 ball-joint anchor assembly. Instructions and references are included to assemble the ball joint anchor.

Figure 54. Illustration. CLRP-BJ01 ball-joint anchor assembly.

Figure 55. Illustration. CLRP-BJ02 clamp. This plan sheet shows front, top, and isometric views of a Cornell Local Roads Program (CLRP)-BJ02 ball-joint clamp. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 55. Illustration. CLRP-BJ02 clamp.

Figure 56. Illustration. CLRP-BJ03 clamp base. This plan sheet shows front, top, and isometric views of a Cornell Local Roads Program (CLRP)-BJ03 ball-joint clamp base. All

Figure 56. Illustration. CLRP-BJ03 clamp base.

Figure 57. Illustration. CLRP-BJ04 base bar. This plan sheet shows front, bottom, and isometric views of a Cornell Local Roads Program (CLRP)-BJ04 base bar. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 57. Illustration. CLRP-BJ04 base bar.

Figure 58. Illustration. CLRP-BJ05 rest stop. This plan sheet shows top, front, right, and isometric views of a Cornell Local Roads Program (CLRP)-BJ05 rest top. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 58. Illustration. CLRP-BJ05 rest stop.

GEOPHONE CALIBRATION STAND

Figure 59. Photo. Geophone calibration stand. This photo shows a geophone calibration stand. The stand, which is composed of aluminum, is positioned diagonally on a flat surface, but it is normally used in a vertical position. The stand is a long rectangle with bars at each end going between the two vertical channel pieces. A total of 11 shelves are positioned between the channels to accommodate the geophones and accelerometer. The accelerometer shelf is at the middle of the stand. Four small aluminum blocks are positioned near the top to accommodate handles and a bubble level.

Figure 59. Photo. Geophone calibration stand.

 

Table 23. Fabricated parts required for BM-GCS geophone calibration stand assembly.
Drawing Number Item Quantity
CLRP-GCS02 Geophone stand side rail 2
CLRP-GCS03 Geophone stand top shelf 1
CLRP-GCS04 Geophone stand bottom shelf 1
CLRP-GCS05 Geophone stand sensor shelf 10
CLRP-GCS06 Geophone stand accelerometer shelf 1
CLRP-GCS07 Geophone stand handle holder1 4
CLRP-GCS08 Geophone stand connector pin2 1

1Identical to CLRP-SCS07.
2Identical to CLRP-SCS08.

Table 24. Hardware items required for BM-GCS geophone calibration stand assembly.
Vendor Part Number Item Vendor Quantity
62385K65 Tapered handle, Smooth phenolic, 38-inch, 16 x ½-inch threaded stud, 1-inch diameter McMaster-Carr® 2
2198A85 Glass surface-mount bull’s-eye level center circle and cross lines, 1¼-inch base diameter, 716-inch height McMaster-Carr® 1
91737A072 18-8 stainless steel fillister head Phillips machine screw 4-40 thread, ¼-inch length McMaster-Carr® 3

1 inch = 25.4 mm

Table 25. Vendor contact information for BM-GCS geophone calibration stand.
Vendor Web site Notes
McMaster-Carr® www.mcmaster.com See Web site for specific contact information in the "About Us" section.
Incodema www.incodema.com Incodema Inc.
407 Cliff Street, Ithaca, NY 14850
607-277-7070

Table 26. Hardware costs for BM-GCS geophone calibration stand.

Part Quantity Supplier Cost1
Materials and machining 1 Incodema $1407.00
Miscellaneous hardware 1   $30.00

1Indicates the cost in February 2009.

Figure 60. Illustration. CLRP-GCS01 geophone stand assembly. This plan sheet shows front and right views of a Cornell Local Roads Program (CLRP)-GCS01 geophone calibration stand as well as details of the required welds. All of the dimensions and specifications are included for fabrication by a machine shop. Instructions and references are included to assemble the geophone calibration stand.

Figure 60. Illustration. CLRP-GCS01 geophone stand assembly.

Figure 61. Illustration. CLRP-GCS02 geophone stand side rail. This plan sheet shows side, front, profile, and isometric views of a Cornell Local Roads Program (CLRP)-GCS02 geophone stand side rail as well as a close-up of the notch. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 61. Illustration. CLRP-GCS02 geophone stand side rail.

Figure 62. Illustration. CLRP-GCS03 geophone top shelf. This plan sheet shows top, side, and isometric views of a Cornell Local Roads Program (CLRP)-GCS03 geophone stand top shelf. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 62. Illustration. CLRP-GCS03 geophone top shelf.

Figure 63. Illustration. CLRP-GCS04 geophone stand bottom shelf. This plan sheet shows top, front, and isometric views of a Cornell Local Roads Program (CLRP)-GCS04 geophone stand bottom shelf. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 63. Illustration. CLRP-GCS04 geophone stand bottom shelf.

Figure 64. Illustration. CLRP-GCS05 geophone stand sensor shelf. This plan sheet shows top, front, and isometric views of a Cornell Local Roads Program (CLRP)-GCS05 geophone stand sensor shelf. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 64. Illustration. CLRP-GCS05 geophone stand sensor shelf.

Figure 65. Illustration. CLRP-GCS06 geophone stand accelerometer shelf. This plan sheet shows top, front, and isometric views of a Cornell Local Roads Program (CLRP)-GCS06 geophone stand accelerometer shelf. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 65. Illustration. CLRP-GCS06 geophone stand accelerometer shelf.

Figure 66. Illustration. CLRP-GCS07 geophone stand handle holder. This plan sheet shows top, front, and isometric views of a Cornell Local Roads Program (CLRP)-GCS07 geophone stand handle holder. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 66. Illustration. CLRP-GCS07 geophone stand handle holder.

Figure 67. Illustration. CLRP-GCS08 geophone stand connector pin. This plan sheet shows the instructions for preparing a Cornell Local Roads Program (CLRP)-GCS08 geophone stand connector pin. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 67. Illustration. CLRP-GCS08 geophone stand connector pin.

SEISMOMETER CALIBRATION STAND

Figure 68. Photo. Seismometer calibration stand. This photo shows a seismometer calibration stand. The stand, which is composed of aluminum, is positioned diagonally on a flat surface, but it is normally used in a vertical position. It is a long rectangle with bars at each end going between the two vertical channel pieces. Five shelves are positioned between the channels to accommodate the geophones and accelerometer. Four small aluminum blocks are positioned 
near the top to accommodate handles and a bubble level.

Figure 68. Photo. KUAB seismometer calibration stand.

Table 27. Fabricated parts required for BM-SCS seismometer calibration stand assembly.
Drawing Number Description Quantity
CLRP-SCS02 Seismometer stand side rail 2
CLRP-SCS03 Seismometer stand top shelf 1
CLRP-SCS04 Seismometer stand sensor shelf 4
CLRP-SCS05 Seismometer stand standoff 10
CLRP-SCS06 Seismometer stand bottom shelf 1
CLRP-SCS07 Seismometer stand handle holder1 4
CLRP-SCS08 Seismometer stand connector pin2 1
CLRP-SCS09 Seismometer stand shelf subassembly 4
CLRP-SCS10 Seismometer stand accelerometer shelf 1
CLRP-SCS11 Seismometer stand accelerometer shelf subassembly 1

1Identical to CLRP-SCS07.
2Identical to CLRP-SCS08.

Table 28. Hardware items required for BM-SCS seismometer calibration stand assembly.
Vendor Part Number Item Vendor Quantity
62385K65 Tapered handle, smooth phenolic,
38-inch, 16 x ½-inch threaded stud,
1-inch diameter
McMaster-Carr® 2
2198A85 Glass surface-mount bull’s-eye level center circle and cross lines, 1¼-inch base diameter, 716-inch height McMaster-Carr® 1
91737A072 18-8 stainless steel fillister head Phillips machine screw 4-40 thread, ¼-inch length McMaster-Carr® 3

1 inch = 25.4 mm

Table 29. Vendor contact information for BM-SCS seismometer calibration stand assembly.
Vendor Web site Notes
McMaster-Carr® www.mcmaster.com See Web site for specific contact information in the "About Us" section.
Incodema www.incodema.com Incodema Inc.
407 Cliff Street, Ithaca, NY 14850
607-277-7070
Table 30. Hardware costs for BM-SCS seismometer calibration stand assembly.
Part Quantity Supplier Cost1
Materials and machining 1 Incodema $1425.00
Miscellaneous hardware 1   $30.00

1Indicates the cost in February 2009.

Figure 69. Illustration. CLRP-SCS01 seismometer stand assembly. This plan sheet shows front and side views of a Cornell Local Roads Program (CLRP)-SCS01 seismometer calibration stand as well as details on the required welds. All of the dimensions and specifications are included for fabrication by a machine shop. Instructions and references are included to assemble the seismometer calibration stand.

Figure 69. Illustration. CLRP-SCS01 seismometer stand assembly.

Figure 70. Illustration. CLRP-SCS02 seismometer stand side rail. This plan sheet shows front, right, and isometric views of a Cornell Local Roads Program (CLRP)-SCS02 seismometer stand side rail as well as details on its notch. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 70. Illustration. CLRP-SCS02 seismometer stand side rail.

Figure 71. Illustration. CLRP-SCS03 seismometer stand top shelf. This plan sheet shows 
top, front, and isometric views of a Cornell Local Roads Program (CLRP)-SCS03 seismometer stand top shelf. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 71. Illustration. CLRP-SCS03 seismometer stand top shelf.

Figure 72. Illustration. CLRP-SCS04 seismometer stand sensor shelf.

Figure 72. Illustration. CLRP-SCS04 seismometer stand sensor shelf.

Figure 73. Illustration. CLRP-SCS05 seismometer stand standoff. This plan sheet shows top, front, and isometric views of a Cornell Local Roads Program (CLRP)-SCS05 seismometer stand standoff. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 73. Illustration. CLRP-SCS05 seismometer stand standoff.

Figure 74. Illustration. CLRP-SCS06 seismometer stand bottom shelf. This plan sheet shows top, front, and isometric views of a Cornell Local Roads Program (CLRP)-SCS06 seismometer stand bottom shelf. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 74. Illustration. CLRP-SCS06 seismometer stand bottom shelf.

Figure 75. Illustration. CLRP-SCS07 seismometer stand handle holder. This plan sheet shows top, front, and isometric views of a Cornell Local Roads Program (CLRP)-SCS07 seismometer stand handle holder. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 75. Illustration. CLRP-SCS07 seismometer stand handle holder.

Figure 76. Illustration. CLRP-SCS08 seismometer stand connector pin. This plan sheet shows instructions for preparing a Cornell Local Roads Program (CLRP)-SCS08 geophone stand connector pin. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 76. Illustration. CLRP-SCS08 seismometer stand connector pin.

Figure 77. Illustration. CLRP-SCS09 seismometer stand shelf subassembly. This plan sheet shows front, bottom, and isometric views of a Cornell Local Roads Program (CLRP)-SCS09 seismometer stand shelf subassembly. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 77. Illustration. CLRP-SCS09 seismometer stand shelf subassembly.

Figure 78. Illustration. CLRP-SCS10 seismometer stand accelerometer shelf. This plan sheet shows top, front, and isometric views of a Cornell Local Roads Program (CLRP)-SCS10 accelerometer shelf. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 78. Illustration. CLRP-SCS10 seismometer stand accelerometer shelf.

Figure 79. Illustration. CLRP-SCS11 seismometer stand accelerometer shelf subassembly. This plan sheet shows front, bottom, and isometric views of a Cornell Local Roads Program (CLRP)-SCS11 seismometer stand accelerometer shelf subassembly. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 79. Illustration. CLRP-SCS11 seismometer stand accelerometer shelf subassembly.

GEOPHONE ADAPTERS

Table 31. Fabricated parts for use as BM-GA geophone adapters.
Drawing Number Description Quantity
CLRP-GA02 Carl Bro adapter 10
CLRP-GA03 JILS adapter 10
CLRP-GA04 KUAB adapter 10
Table 32. Hardware items required for use of BM-GA geophone adapters.
Vendor Part Number Item Vendor Quantity
90126A036 Society of Automotive Engineers flat washer, zinc-plated steel, 34-inch size, 1316-inch inside diameter, 112-inch outside diameter, 0.108-inch minimum thickness McMaster-Carr® 10
94744A273 Flat washer, zinc-plated steel, 38-inch screw size, 0.406-inch inside diameter,
1 ¼-inch outside diameter, 0.090–
0.112 inches thick
McMaster-Carr® 10
92865A212 Hex head cap screw, grade 5 zinc-plated steel, 38-inch 24 Thread, 58 inches long, fully threaded McMaster-Carr® 10
KK-GA02 Knurled knob, steel with black oxide finish, M8 x 1 mm threaded through hole Morton Machine Works 10
KK-GA03 Knurled knob, steel with black oxide finish, 38-24 threaded through hole Morton Machine Works 10
6063K19 Metric steel two-piece clamp on shaft collar 20-mm bore, 40-mm outside diameter, 15-mm width McMaster-Carr® 10
5685K26 Encased ceramic round magnet W/hole
1 1332-inch diameter, 932-inch thick,
20 pull lb
McMaster-Carr® 10
6121K93 Steel round knurled-rim knob solid hub, 1.5-inch diameter McMaster-Carr® 10
92949A246 18-8 SS button head socket cap screw
10-24 thread, 78-inch length
McMaster-Carr® 10
90730A011 18-8 SS undersized machine screw hex nut 10-24 screw size, 516-inch width,
764-inch height
McMaster-Carr® 10

1 inch = 25.4 mm

Table 33. Vendor contadct information for BM-GA geophone adapters.
Vendor Web site Notes
McMaster-Carr® http://www.mcmaster.com See Web site for area specific contact information located in the "About Us" section.
Morton Machine Works http://www.mortonmachine.com 125 Gearhart St, PO Box 97 Millersburg, PA 17061
800-441-2751
Table 34. Hardware costs for BM-GA geophone adapters.
Part Quantity Cost1 Notes
Dynatest®/JILS adapter 10 $50.00 Price for all 10 adapters including bolts and washers.
Carl Bro adapter 10 $50.00 Price for all 10 adapters.
KUAB Geophone adapter 10 $150.00 Price for all 10 adapters including collars, magnets, knobs, washers, bolts, and nuts.

1Indicates the cost in February 2009.

Figure 80. Illustration. CLRP-GA01 geophone adapter assemblies. This plan sheet shows profile views of Carl Bro, Dynatest®, and JILS Cornell Local Roads Program (CLRP)-GA01 geophone adapters. Instructions and references are included to assemble the geophone

Figure 80. Illustration. CLRP-GA01 geophone adapter assemblies.

Figure 81. Illustration. CLRP-GA02 Carl Bro adapter. This plan sheet shows top, profile, and isometric views of a Cornell Local Roads Program (CLRP)-GA02 Carl Bro geophone adapter. All of the dimensions and specifications are included for purchase of the knurled nut adapter.

Figure 81. Illustration. CLRP-GA02 Carl Bro adapter.

Figure 82. Illustration. CLRP-GA03 JILS adapter. This plan sheet shows top, profile, and isometric views of a Cornell Local Roads Program (CLRP)-GA03 JILS geophone adapter. All of the dimensions and specifications are included for purchase of the knurled nut adapter.

Figure 82. Illustration. CLRP-GA03 JILS adapter.

Figure 83. Illustration. CLRP-GA04 KUAB adapter. This plan sheet shows assembly and exploded views of a Cornell Local Roads Program (CLRP)-GA04 KUAB geophone adapter. Instructions and references are included to assemble the geophone adapter.

Figure 83. Illustration. CLRP-GA04 KUAB adapter.

REFERENCE LOAD CELL

For a photo of the reference load cell, see figure 104.

Table 35. Fabricated parts for the BM-LC reference load cell.
Drawing Number Description Quantity
CLRP-LC02 Reference load cell body 1
CLRP-LC03 Base plate 1
CLRP-LC04 Measuring link 3
CLRP-LC05 Cover plate 1
CLRP-LC06 Foot 3
CLRP-LC07 Guide finger 3
CLRP-LC08 Interior connector wiring 1
CLRP-LC09 Strain gauge layout 3
CLRP-LC10 Bridge wiring detail 1
Table 36. Equipment and hardware items required for the BM-LC reference load cell.
Vendor Part Number Item Vendor Quantity
92196A327 Socket head cap screw, 18-8 SS, ¼-inch 28 thread, 1¼-inch length McMaster-Carr® 6
92196A323 Socket head cap screw, 18-8 SS, ¼-inch 28 thread, 78-inch length McMaster-Carr® 6
92210A337 Flat head socket cap screw,
18-8 SS, ¼-inch 28 thread, 1¼-inch length
McMaster-Carr® 6
91737A072 Fillister head Phillips machine screw, 18-8 SS, #4-40 thread, ¼-inch length McMaster-Carr® 4
654-MS3102A14S-5P Amphenol box mount receptacle, MS3102A-14S-5P Mouser Electronics 1
N2A-13-S054Y-350 Transducer-class strain gauges, general purpose 90-degree rosette, 18-inch gauge length, 350 horseshoe symbol resistance Vishay Micro-Measurements 12

1 inch = 25.4 mm

Table 37. Vendor contact information for the BM-LC reference load cell.
Vendor Web site Notes
McMaster-Carr® http://www.mcmaster.com See Web site for specific contact information located in the "About Us" section.
Mouser Electronics http://www.mouser.com See Web site for specific contact information located in the "Contact Us" section.
Vishay Micro-Measurements http://www.vishay.com See Web site for specific contact information located in the "Sales Representatives" section.

Note: A complete reference load cell assembly, cable, and case can be purchased from Half-Space Engineering, 6055 Quaking Aspen Road, Reno NV, 89510 (pete@half-space.com). Cost depends on what additional hardware is needed (signal conditioner, data acquisition board, etc.).

Figure 84. Illustration. CLRP-LC01 load cell assembly. This plan sheet shows assembly instructions and top, side, and detail views of a Cornell Local Roads Program (CLRP)-LC01 reference load cell as well as details of the required welds. All of the dimensions and specifications are included for fabrication by a machine shop. Instructions and references are included to assemble the seismometer calibration stand.

Figure 84. Illustration. CLRP-LC01 load cell assembly.

Figure 85. Illustration. CLRP-LC02 load cell body. This plan sheet shows top, side, and detail views of a Cornell Local Roads Program (CLRP)-LC02 reference load cell body. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 85. Illustration. CLRP-LC02 load cell body.

Figure 86. Illustration. CLRP-LC03 base plate. This plan sheet shows top, side, and isometric views of a Cornell Local Roads Program (CLRP)-LC03 reference load cell base plate. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 86. Illustration. CLRP-LC03 base plate.

Figure 87. Illustration. CLRP-LC04 measuring link. This plan sheet shows top, side, and isometric views of a Cornell Local Roads Program (CLRP)-LC04 reference load cell measuring link. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 87. Illustration. CLRP-LC04 measuring link.

Figure 88. Illustration. CLRP-LC05 cover plate. This plan sheet shows top, side, and isometric views of a Cornell Local Roads Program (CLRP)-LC05 reference load cell cover plate. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 88. Illustration. CLRP-LC05 cover plate.

Figure 89. Illustration. CLRP-LC06 foot. This plan sheet shows top, side, and isometric views of a Cornell Local Roads Program (CLRP)-LC06 reference load cell foot. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 89. Illustration. CLRP-LC06 foot.

Figure 90. Illustration. CLRP-LC07 guide fingers. This plan sheet shows side, end, and isometric views of Cornell Local Roads Program (CLRP)-LC07 reference load cell guide fingers. All of the dimensions and specifications are included for fabrication by a machine shop.

Figure 90. Illustration. CLRP-LC07 guide fingers.

Figure 91. Illustration. CLRP-LC08 interior connector wiring. This plan sheet shows a view of Cornell Local Roads Program (CLRP)-LC08 interior wiring of a reference load cell. This schematic is used to manufacture or specify the wiring from the bridge wiring to the Amphenol receptacle on the outer shell of the reference load cell.

Figure 91. Illustration. CLRP-LC08 interior connector wiring.

Figure 92. Illustration. CLRP-LC09 strain gauge layout. This plan sheet shows the layout and specification of Cornell Local Roads Program (CLRP)-LC09 strain gauges used in a reference load cell. Specific alignment of the strain gauges on the measuring links is also visible. This schematic is used to manufacture or specify the installation of the strain gauges on the reference load cell.

Figure 92. Illustration. CLRP-LC09 strain gauge layout.

Figure 93. Illustration. CLRP-LC10 bridge wiring. This plan sheet shows Cornell Local Roads Program (CLRP)-LC10 bridge wiring of a reference load cell, illustrating the attachments between strain gauges. This schematic is used to manufacture or specify the bridge wiring between the strain gauges.

Figure 93. Illustration. CLRP-LC10 bridge wiring.

DATA ACQUISITION SYSTEM

Table 38. Cable diagrams required for BM-DAQ.
Drawing Number Description Quantity
CLRP-DAQ01 Vishay to KUSB DAQ cable 1
CLRP-DAQ01A Vishay 2310B BNC to DAQ cable 1
CLRP-DAQ01B Vishay 2310B BNC to DAQ cable (stock parts) 1
CLRP-DAQ02 Vishay to load cell cable 1
CLRP-DAQ03 Accelerometer signal cable 1
CLRP-DAQ04 Pushbutton to KUSB DAQ cable 1
Table 39. Equipment and hardware items required for BM-DAQ.
Vendor Part Number Item Vendor Quantity
Model 2310B Vishay 2310 signal conditioner Vishay Micro-Measurements 1
2310-A20 Kit Vishay stabilizer bar and line cord accessory package Vishay Micro-Measurements 1
KUSB-3108 Keithley 16-bit USB DAQ Keithley 1
571-5-1634504-1 BNC panel mount radio frequency (RF) connector Mouser Electronics 1
566-8723 Belden 8732, two-pair shielded cable,
25-ft sections
Mouser Electronics 4
654-PT06A-14-15P-SR Amphenol PT06A-14-15P <SR> straight plug Mouser Electronics 2
654-PT06A-10-6S-SR Amphenol PT06A-10-6S <SR> straight plug Mouser Electronics 1
654-MS3106F-14S-5S Amphenol MS3106A 14S-5S straight plug Mouser Electronics 1
2062325 Resistors, 2.2 k , ¼ Watt, 5 percent carbon film Radio Shack® 2
2103233 Terminal strip, 5 position Radio Shack® 1
2062543 Pushbutton, momentary, 1.5 A Radio Shack® 1
278-0232 Enclosure, black plastic Allied Electronics 1
91772A123 Pan head Philips machine screw, 18-8 stainless steel, #5-40 x 516-inch length McMaster-Carr® 1
91841A006 Nut, 18-8 stainless steel, #5-40 thread, 764-inch height McMaster-Carr® 1
510-0194 BNC to BNC cable, 10-ft length Allied Electronics 1
523-T3324-501 Amphenol circular DIN connector Mouser Electronics 1
546-1455T2202 Hammond enclosure, aluminum extruded, 8.66 x 6.3 x 2.1 inches Mouser Electronics 1
523-T3327-100 Amphenol circular DIN connector,
panel mount
Mouser Electronics 1
571-5-1634504-1 BNC panel mount RF connector Mouser Electronics 1
523-T3327-100 Amphenol circular DIN connector,
panel mount
Mouser Electronics 1
523-T3324-501 Amphenol circular DIN connector Mouser Electronics 1
546-1455T2202 Hammond enclosure, aluminum extruded, 8.66 x 6.3 x 2.1 inches Mouser Electronics 1
  Velcro, hook and loop, adhesive backed, industrial strength Local hardware store  

1 inch = 25.4 mm
1 ft = 0.305 m

Table 40. Vendor contact information for BM-DAQ.
Vendor Web site Notes
McMaster-Carr® http://www.mcmaster.com See Web site for specific contact information located in the "About Us" section.
Mouser Electronics http://www.mouser.com See Web site for specific contact information located in the “Contact Us” section.
Allied Electronics http://www.alliedelec.com See Web site for specific contact information located in the "Customer Service" section.
Radio Shack® http://www.radioshack.com See Web site for specific contact information located in the "Contact Us" section.
Keithley Instruments http://www.keithley.com See Web site for specific contact information located in the "Contact Us" section.
Vishay Micro-Measurements http://www.vishay.com See Web site for specific contact information located in "Sales Representatives" section.

Figure 94. Illustration. CLRP-DAQ01 Vishay 2310 to DAQ cable. This plan sheet shows a wiring diagram for a Cornell Local Roads Program (CLRP)-DAQ01 Vishay to KUSB DAQ cable with a Jones plug connector. This schematic is used to manufacture or specify the signal cable between the accelerometer and Vishay signal conditioner.

Figure 94. Illustration. CLRP-DAQ01 Vishay 2310 to DAQ cable.

Figure 95. Illustration. CLRP-DAQ01A Vishay 2310B BNC to DAQ cable. This plan sheet shows a wiring diagram for a Cornell Local Roads Program (CLRP)-DAQ01A Vishay to KUSB data acquisition board (DAQ) cable with a Bayonet Neill-Concelman (BNC) connector. This schematic is used to manufacture or specify the signal cable from a Vishay signal conditioner with a BNC connector directly to the KUSB DAQ.

Figure 95. Illustration. CLRP-DAQ01A Vishay 2310B BNC to DAQ cable.

Figure 96. Illustration. CLRP-DAQ01B Vishay 2310B BNC to DAQ cable (stock parts). This plan sheet shows a wiring diagram for a Cornell Local Roads Program (CLRP)-DAQ01B Vishay to KUSB data acquisition board (DAQ) cable with a Bayonet Neill-Concelman (BNC) connector and stock parts. This schematic is used to manufacture or specify the signal cable from a Vishay signal conditioner with a BNC connector to the KUSB data acquisition board with a BNC connector protecting enclosure.

Figure 96. Illustration. CLRP-DAQ01B Vishay 2310B BNC to DAQ cable (stock parts).

Figure 97. Illustration. CLRP-DAQ02 Vishay to load cell cable.

Figure 97. Illustration. CLRP-DAQ02 Vishay to load cell cable.

Figure 98. Illustration. CLRP-DAQ03 accelerometer signal cable. This plan sheet shows a wiring diagram for a Cornell Local Roads Program (CLRP)-DAQ03 Vishay to the accelerometer cable. This schematic is used to manufacture or specify the signal cable between a Vishay signal conditioner with a Bayonet Neill-Concelman (BNC) connector and the reference accelerometer.

Figure 98. Illustration. CLRP-DAQ03 accelerometer signal cable.

Figure 99. Illustration. CLRP-DAQ04 pushbutton to KUSB DAQ cable and cable wiring. This plan sheet shows a wiring diagram for a Cornell Local Roads Program (CLRP)-DAQ04 push button to the KUSB data acquisition board (DAQ) cable.

Figure 99. Illustration. CLRP-DAQ04 pushbutton to KUSB DAQ cable and cable wiring.

Figure 100. Illustration. CLRP-DAQ06 KUSB protection wiring. This plan sheet shows a wiring diagram for a Cornell Local Roads Program (CLRP)-DAQ06 KUSB data acquisition board protection enclosure. This schematic is used to manufacture or specify the enclosure.

Figure 100. Illustration. CLRP-DAQ06 KUSB protection wiring.

Figure 101. Illustration. CLRP-DAQ07 KUSB enclosure rear panel. This plan sheet shows the holes needed on the rear of a Cornell Local Roads Program (CLRP)-DAQ07 KUSB data acquisition board protection enclosure. All of the dimensions and specifications are included

Figure 101. Illustration. CLRP-DAQ07 KUSB enclosure rear panel.

Figure 102. Illustration. CLRP-DAQ08 KUSB enclosure front panel.

Figure 102. Illustration. CLRP-DAQ08 KUSB enclosure front panel.


The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT).
The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT). Provide leadership and technology for the delivery of long life pavements that meet our customers needs and are safe, cost effective, and can be effectively maintained. Federal Highway Administration's (FHWA) R&T Web site portal, which provides access to or information about the Agency’s R&T program, projects, partnerships, publications, and results.
FHWA
United States Department of Transportation - Federal Highway Administration