Attachment_1__-_Survey_Monuments_RFQ__Specifications.pdf

1. Regulation Stainless Steel Pipe Monument Navajo Bronze Cap

General

These specifications are for an assembled FLARED/UNFLARED stainless steel pipe monument. These monuments are installed by the Federal government at angle points marking the exterior boundaries of Federal interest lands. During the order process, the requester will state whether the flanges are to be flared or unflared.

Specifications

MONUMENT CAP

The monument cap shall be a silicon bronze, bronze alloy, conforming to:

A.S.T.M. (Ingot) B-30 (872) or A.S.T.M. (Castings) B-584 (872) and B-271 (872) or the equivalent.

The silicon bronze, bronze alloy shall have the following nominal chemical composition:

copper 92 silicon 4 zinc 4

Equivalency is based on the durability and corrosion-resistant properties of the monument cap in the following environments: acids, bases (alkaline), salts, and dissimilar materials (reduced galvanic reaction).

The monument cap shall have the Navajo Cadastral Survey inscription conforming to Drawing No. 1. All letters and numbers shall be indented (not raised), have a minimum depth of 1/32 of an inch, and shall have clean and unbroken uniform lines, and shall be clear and legible.

The monument cap dimensions are shown in Drawing No. 2.

The cap shall have a socket portion that is specially shaped to force fit over the outside diameter of the pipe's upper end. The cap is held in place on the pipe by a solid stainless-steel rivet, as shown in Drawing Nos. 2 and 3.

The surface shall be smooth and have a medium gloss, polish-like finish.

The U.S. Government does NOT have a cast for casting the monument cap nor does it have dies for forging the cap. It is the vendor’s responsibility to manufacture their own cast or die.

MONUMENT CAP MAGNET:

The monument cap shall have a ceramic magnet permanently attached within the cap socket and retained by mechanical means. For aid in assembly, an adhesive may be used in ADDITION to the mechanical retention. The ceramic magnet shall be capable of remaining in place should there be no adhesive or the adhesive should unbond between the monument cap and the ceramic magnet.

Minimum magnet dimensions are as shown in Drawing No. 2.

The monument cap magnet shall have a minimum detection range of at least 3.5 feet when using a Schonstedt Instrument Company, model GA-52C metal detector, or an equivalent metal detector.

PIPE CAP RIVET:

The cap rivet shall be 3/16" x 3" flat or oval head rivet, solid stainless steel, type 304 or equivalent.

Equivalency is based on the durability and corrosion-resistant properties in the following environments:

acids, bases (alkaline), salts, and dissimilar materials (reduced galvanic reaction).

MONUMENT PIPE

The monument pipe is made from Type 304 or Type 316 stainless steel, Schedule 10 pipe, with a nominal inside diameter of 2 inches and cut 30" long. The actual pipe inside diameter is 2.157 inches (2 5/32 inches). The pipe wall thickness is 0.109 inches (7/64 inches). The actual pipe outside diameter is 2.375 inches (2 3/8 inches).

The stainless steel pipe may be either seamless or continuous butt welded. If there is a seam, it must be flush both on the inside and outside of the stainless steel pipe.

PIPE BASE

The pipe base shall be notched as shown in Drawing No. 3. The 4 notches in each pipe base must be equally spaced.

All of the monuments in each individual order shall be shipped either flared or unflared as specified by that specific order. Flared monuments shall be flared 5 1/2 ins. + 1/4 in. (See Drawing No. 3)

ASSEMBLY:

The monument cap shall be pressed onto the top of the pipe with a firm fit and shall bottom inside the cap.

The cap and pipe shall be drilled, fitted, and set with a rivet. A matched through hole shall be drilled for the rivet using a guided "V" block, or equivalent, to assure the hole is drilled on the pipe center line.

Sufficient edge material must be allowed to prevent the rivet hole from cracking out when the rivet is set.

The rivet must be installed and finished with at least 5/16 inches diameter material on each end of the rivet after it is set (battered).

The final set (battered) rivet must be tight against the brass cap with no visible movement.

FINISH

The finished monuments must be free of grease and mechanical oil on the exterior surfaces. Unflared monuments shall have no sharp burrs, capable of cutting an ungloved hand, on the exposed portions on the exterior of the monument.

Drawing No. 1

2. Regulation Stainless Steel Post BLM Bronze Cap

These specifications are for an assembled FLARED/UNFLARED stainless steel pipe monument. These monuments are installed by the Federal government at angle points marking the exterior boundaries of Federal interest lands. During the order process, the requester will state whether the flanges are to be flared or unflared.

Specifications

MONUMENT CAP

The monument cap shall be a silicon bronze, bronze alloy, conforming to:

A.S.T.M. (Ingot) B-30 (872) or A.S.T.M. (Castings) B-584 (872) and B-271 (872) or the equivalent.

The silicon bronze, bronze alloy shall have the following nominal chemical composition:

copper 92 silicon 4 zinc 4

Equivalency is based on the durability and corrosion-resistant properties of the monument cap in the following environments: acids, bases (alkaline), salts, and dissimilar materials (reduced galvanic reaction).

The monument cap shall have the standard Cadastral Survey inscription conforming to Drawing No. 1.

All letters and numbers shall be indented (not raised), have a minimum depth of 1/32 of an inch, and shall have clean and unbroken uniform lines, and shall be clear and legible.

The monument cap dimensions are shown in Drawing No. 2.

The cap shall have a socket portion that is specially shaped to force fit over the outside diameter of the pipe's upper end. The cap is held in place on the pipe by a solid stainless steel rivet, as shown in Drawing Nos. 2 and 3.

The surface shall be smooth and have a medium gloss, polish-like finish.

The U.S. Government does NOT have a cast for casting the monument cap nor does it have dies for forging the cap. It is the vendor’s responsibility to manufacture their own cast or die.

MONUMENT CAP MAGNET:

The monument cap shall have a ceramic magnet permanently attached within the cap socket and retained by mechanical means. For aid in assembly, an adhesive may be used in ADDITION to the mechanical retention. The ceramic magnet shall be capable of remaining in place should there be no adhesive or the adhesive should unbond between the monument cap and the ceramic magnet.

Minimum magnet dimensions are as shown in Drawing No. 2.

PIPE CAP RIVET:

The cap rivet shall be 3/16" x 3" flat or oval head rivet, solid stainless steel, type 304 or equivalent.

Equivalency is based on the durability and corrosion-resistant properties in the following environments:

acids, bases (alkaline), salts, and dissimilar materials (reduced galvanic reaction).

MONUMENT PIPE

The monument pipe is made from Type 304 or Type 316 stainless steel, Schedule 10 pipe, with a nominal inside diameter of 2 inches and cut 30" long. The actual pipe inside diameter is 2.157 inches (2 5/32 inches). The pipe wall thickness is 0.109 inches (7/64 inches). The actual pipe outside diameter is 2.375 inches (2 3/8 inches).

The stainless steel pipe may be either seamless or continuous butt welded. If there is a seam, it must be flush both on the inside and outside of the stainless steel pipe.

PIPE BASE

The pipe base shall be notched as shown in Drawing No. 3. The 4 notches in each pipe base must be equally spaced.

All of the monuments in each individual order shall be shipped either flared or unflared as specified by that specific order. Flared monuments shall be flared 5 1/2 ins. + 1/4 in. (See Drawing No. 3)

ASSEMBLY:

The monument cap shall be pressed onto the top of the pipe with a firm fit and shall bottom inside the cap.

The cap and pipe shall be drilled, fitted, and set with a rivet. A matched through hole shall be drilled for the rivet using a guided "V" block, or equivalent, to assure the hole is drilled on the pipe center line.

Sufficient edge material must be allowed to prevent the rivet hole from cracking out when the rivet is set.

The rivet must be installed and finished with at least 5/16 inches diameter material on each end of the rivet after it is set (battered).

The final set (battered) rivet must be tight against the brass cap with no visible movement.

FINISH

The finished monuments must be free of grease and mechanical oil on the exterior surfaces. Unflared monuments shall have no sharp burrs, capable of cutting an ungloved hand, on the exposed portions on the exterior of the monument.

3. Regulation Galvanized Steel Monument with BLM Cap

These specifications are for an assembled FLARED stainless steel pipe monument. These monuments are installed by the Federal government at angle points marking the exterior boundaries of Federal interest lands.

MONUMENT CAP

The monument cap shall be a silicon bronze, bronze alloy, conforming to:

A.S.T.M. (Ingot) B-30 (872) or A.S.T.M. (Castings) B-584 (872) and B-271 (872) or the equivalent.

The silicon bronze, bronze alloy shall have the following nominal chemical composition:

copper 92 silicon 4 zinc 4

Equivalency is based on the durability and corrosion-resistant properties of the monument cap in the following environments: acids, bases (alkaline), salts, and dissimilar materials (reduced galvanic reaction).

The monument cap shall have the standard Cadastral Survey inscription conforming to Drawing No. 1.

All letters and numbers shall be indented (not raised), have a minimum depth of 1/32 of an inch, and shall have clean and unbroken uniform lines, and shall be clear and legible.

The monument cap dimensions are shown in Drawing No. 2.

The cap shall have a socket portion that is specially shaped to force fit over the outside diameter of the pipe's upper end. The cap is held in place on the pipe by a solid stainless steel rivet, as shown in Drawing Nos. 2, 3, and 4.

The surface shall be smooth and have a medium gloss, polish-like finish.

The U.S. Government does NOT have a cast for casting the monument cap nor does it have dies for forging the cap. It is the vendor’s responsibility to manufacture their own cast or die.

MONUMENT CAP MAGNET:

The monument cap shall have a ceramic magnet permanently attached within the cap socket and retained by mechanical means. For aid in assembly, an adhesive may be used in ADDITION to the mechanical retention. The ceramic magnet shall be capable of remaining in place should there be no adhesive or the adhesive should unbond between the monument cap and the ceramic magnet.

Minimum magnet dimensions are as shown in Drawing No. 6 (Section D-Attachments).

CAP RIVET:

The cap rivet shall be 3/16" x 3" flat or oval head rivet, solid stainless steel, type 304 or equivalent.

Equivalency is based on the durability and corrosion-resistant properties in the following environments:

acids, bases (alkaline), salts, and dissimilar materials (reduced galvanic reaction).

MONUMENT PIPE:

The monument pipe shall be galvanized steel, Schedule 40 pipe. The pipe shall be about 2 3/8 inches outside diameter and is cut 30 inches long (+/- 3/8 inch).

PIPE BASE:

The pipe base shall be notched as shown in Drawing No. 4. The 4 notches in each pipe base must be equally spaced.

All of the monuments in each individual order shall be shipped flared. The base shall be flared approximately 5 1/2 inches in width. (See Drawing No. 4).

ASSEMBLY:

The monument cap shall be pressed onto the top of the pipe with a FIRM fit and shall bottom inside the cap. This fit should be of such tightness and security that the monument would be virtually destroyed should a layman attempt to remove the monument cap from the monument pipe. A rivet may be used if necessary to achieve this tightness and security.

FINISH

The finished monuments must be free of grease and mechanical oil on the exterior surfaces.

4. Regulation Aluminum Post -- BLM Aluminum Cap

These specifications are for an assembled FLARED/UNFLARED aluminum pipe monument. These monuments are installed by the Federal government at angle points marking the exterior boundaries of Federal interest lands. During the order process, the requester will state whether the flanges are to be flared or unflared.

MONUMENT CAP

The monument cap shall be ALMAG 35, Alloy 535.0: QQ-A601E's, or latest revisions:

Composition: Aluminum - 92-93%; Magnesium - 6.5-7.5% Strength: Yield: 19,000 to 21,000 psi:

Tensile: 38,000 to 44,000 psi;

Elongation: 10 to 15% (in two inches).

A forged monument cap is also acceptable and shall be aluminum alloy 6063 with a temper of T5 or equivalent.

Composition: Aluminum - 97-98%; Magnesium - 0.5 - 1% Silicon -0.25-0.50%; Other - less than 1%

Cap dimensions are shown in Drawing No. 5. The surface shall be smooth and have a medium gloss, polish-like finish. The cap shall have a socket portion that is specially shaped to force fit over the outside diameter of the pipe's upper end. The cap is held in place firmly from the friction fit.

The standard Cadastral Survey inscription shall be cast or forged into the cap as specified in Drawing No.

5. All letters and numbers shall have clean, uniform, unbroken lines, and be clear and legible. A sample cap showing the quality of the inscription and degree of polish is available at some of the Bureau of Land Management offices if necessary. Cap dimensions are the same as those for the cast cap above and are shown in Drawing No. 6.

The U.S. Government does NOT have a cast for the cap. It is the vendor’s responsibility to manufacture their own cast.

MONUMENT CAP MAGNET:

The monument cap shall have a ceramic magnet permanently attached within the cap socket and retained by mechanical means. For aid in assembly, an adhesive may be used in ADDITION to the mechanical retention. The ceramic magnet shall be capable of remaining in place should there be no adhesive or the adhesive should unbond between the monument cap and the ceramic magnet.

The monument cap magnet shall have a minimum detection range of at least 3.5 feet when using a

Minimum magnet dimensions are as shown in Drawing No. 6.

CAP RIVET:

If a cap rivet is used, it shall be 3/16 inch x 3 inches flat or oval head rivet, aluminum alloy 6061-T6 aluminum.

MONUMENT PIPE:

The monument pipe shall be aluminum alloy 6063-T52, Schedule 40 pipe. The pipe shall be about 2 3/8 inches outside diameter, have a wall thickness of 5/32 inch (+/- 0.012 inch), and is cut 30 inches long (+/- 3/8 inch).

PIPE BASE:

The pipe base shall be notched as shown in Drawing No. 8. The 4 notches in each pipe base must be equally spaced.

All of the monuments in each individual order shall be shipped either flared or unflared as specified by that specific order. When the order requires flared monuments, the aluminum pipe base shall be flared approximately 5 1/2 inches in width. (See Drawing No. 8).

ASSEMBLY:

The monument cap shall be pressed onto the top of the pipe with a FIRM fit and shall bottom inside the cap. This fit should be of such tightness and security that the monument would be virtually destroyed should a layman attempt to remove the monument cap from the monument pipe. A rivet may be used if necessary to achieve this tightness and security.

5. Regulation Stainless Steel Drive w/Flange and BLM Bronze Cap

These specifications are for a stainless steel rod with a welded flange and an unattached or attached “brass” cap with a magnet for permanently marking survey positions on the ground. The flange is utilized to help prevent unauthorized persons from removing the monument from the ground. A magnet in the monument is required in order that future surveyors can readily locate the monument with a common ferrous metal detector, should the monument become buried under fill. During the ordering process, the requestor will state whether the monument cap is to be unattached or attached to the stainless steel rod.

Specifications

BRASS CAP:

The monument brass cap shall be a silicon bronze, bronze alloy, conforming to:

CDA 651 or The equivalent.

The silicon bronze, bronze alloy shall have the following nominal chemical composition:

Copper 92 to 98.5 Silicon 0.8 to 4 Zinc 0 to 4

Equivalency is based on the durability and corrosion-resistant properties of the monument cap in the following environments: acids, bases (alkaline), salts, and dissimilar materials (reduced galvanic reaction).

The monument cap dimensions are shown in Drawing No. 1.

The monument cap shall have a Cadastral Survey inscription conforming to the orientation, layout, and spacing as depicted in Drawing No. 2. The inscription shall be balanced and centered. All letters and numbers shall be indented (not raised), have a minimum depth of 1/32 of an inch, and shall have clean and unbroken uniform lines, and shall be clear and legible.

If ordered with the monument cap unattached, the monument cap shall have a socket portion that is specially shaped to fit over the outside diameter of the stainless steel rod's upper end. After the monument has been set in the ground, the cap is forced over the stainless steel rod and is held securely in place by swaging. If ordered with the monument cap attached, the monument cap shall be attached by the manufacturer to the stainless steel rod.

The monument cap top surface shall be smooth and have a medium gloss, polish-like finish with no visible pitting or other surface marks.

The U.S. Government does NOT have a cast for casting the monument cap nor does it have dies for forging the cap. It is the vendor’s responsibility to manufacture their own cast or die.

A sample similar type monument cap showing the quality of inscription, depth of indentation, and degree of polish acceptable under the terms of this contract are available for inspection.

STAINLESS STEEL ROD:

The stainless steel rod shall be 9/16 inch nominal diameter alloy 304 stainless steel.

The rod shall be of such length that the finished assembled monument, including the monument cap, is 30 inches long plus or minus 1/4 inch.

The rod shall be chamfered for at least 3/8 of an inch along the rod length on one end as shown in Drawing No. 1 creating a blunt point in order to aid the user in driving the assembled monument into the ground. The point shall not be so sharp that it cuts an ungloved hand.

MAGNET

The magnet shall be a 1/4 inch diameter, 1/2 inch thick Alnico 5 magnet or the equivalent.

The magnet shall be installed within the brass cap and held in place with epoxy or other equivalent adhesives.

FLANGE:

The rod shall have a triangular-shaped piece of alloy 304 stainless steel plate with a nominal thickness of 1/8 inch. See Drawing No. 1 for dimensions. The corners shall be rounded and sharp burrs and other protrusions removed in order that an ungloved hand shall not be cut.

ASSEMBLY:

The cap in each individual order shall be shipped either unattached or attached to the stainless steel rod as the specified requestor of the order.

The stainless steel flange is bent (formed) approximately one-half-way around the circumference of the stainless steel rod in order to increase the contact area between the stainless steel flange and the stainless steel rod. The flange ends should be approximately 180 degrees from each other after the central portion of the flange is formed around the rod. A tolerance of plus or minus 15 degrees is acceptable. A point of the triangle nearest to the chamfered end of the stainless-steel rod shall be approximately 9 1/4 inches distant from the end (tip). See Drawing No. 1.

The stainless-steel flange shall be TIG or MIG welded to the stainless-steel rod for the full length of the flange, on each side of the stainless steel rod, resulting in 2 welds, each approximately 2 1/2 inches long.

FINISH:

The finished monument must be free of grease and mechanical oil on the exterior surfaces. Monuments shall have no sharp burrs or slivers, capable of cutting an ungloved hand when routinely handled.

6. Regulation Aluminum Rod -- BLM Aluminum Cap

These specifications are for an aluminum rod, an unattached aluminum cap with a magnet, a spiral drive point, and a threaded rod connector for permanently marking survey positions on the ground. A magnet in the monument cap is required to assist future surveyors in locating the monument with a common ferrous metal detector.

Specifications

SECTIONAL ROD:

The sectional rods shall be aluminum alloy 6000 series, 3/4-inch diameter, and 36 inches (3 feet) in length. They should be machined with appropriately sized vibration-resistant precision threaded connections on each rod.

SECTIONAL ROD CAP

A forged monument cap is also acceptable and shall be aluminum alloy 6063 with a temper of T5 or equivalent.

Composition: Aluminum - 97-98%; Magnesium - 0.5 - 1% Silicon -0.25-0.50%; Other - less than 1%

The standard Cadastral Survey inscription shall be cast or forged into the cap as specified in Drawing No.

1. All letters and numbers shall have clean, uniform, unbroken lines, and be clear and legible. All letters and numbers shall be indented (not raised), have a minimum depth of 1/32 of an inch, and shall have clean unbroken lines, and shall be clear and legible. A sample cap showing the quality of the inscription and degree of polish is available if necessary.

The tap-on cap dimensions are domed, 3 1/4 inches in diameter, with a hex socket designed for compression fit when tapped onto the rod. The socket interior should be fluted to allow air to escape, with a ceramic magnet adhered to the interior.

The U.S. Government does NOT have a cast for the cap. It is the vendor’s responsibility to manufacture their own cast.

SECTIONAL ROD CAP MAGNET:

The monument cap shall have a ceramic magnet permanently attached within the cap socket and retained by mechanical means. For aid in assembly, an adhesive may be used in ADDITION to the mechanical retention. The ceramic magnet shall be capable of remaining in place should there be no adhesive or the adhesive should unbond between the monument cap or the ceramic magnet.

SPIRAL DRIVE POINT

The spiral point should be an aluminum alloy, vibration-resistant precision threaded, and of the appropriate size for the rod diameter.

THREADED ROD CONNECTORS

The connectors should be made of 300 series stainless steel, precision threaded and the appropriate length for the rod diameter.

ASSEMBLY:

Is to be assembled as it is installed into the ground.

7. 24” Drive Rod with an anchoring system and BLM Bronze Cap

These specifications are for a drive rod with an anchoring system, and an unattached “brass” cap with a magnet for permanently marking survey positions on the ground. The three or four anchoring wires/rods are utilized to help prevent unauthorized persons from removing the monument from the ground. A magnet in the monument is required in order that future surveyors can readily locate the monument with a common ferrous metal detector, should the monument become buried under fill.

Specifications

BRASS CAP:

The monument brass cap shall be a silicon bronze, bronze alloy, conforming to:

reaction).

The monument cap dimensions are shown in Drawing No. 1.

The monument cap shall have a Cadastral Survey inscription conforming to the orientation, layout, and spacing as depicted in Drawing No. 2. The inscription shall be balanced and centered. All letters and numbers shall be indented (not raised), have a minimum depth of 1/32 of an inch, and shall have clean and unbroken uniform lines, and shall be clear and legible.

The monument cap shall be designed to permanently attach to the rod's upper end. After the monument has been set in the ground, the cap is attached to the rod and is held securely in place by swaging.

The monument cap top surface shall be smooth and have a medium gloss, polish-like finish with no visible pitting or other surface marks.

The U.S. Government does NOT have a cast for casting the monument cap nor does it have dies for forging the cap. It is the vendor’s responsibility to manufacture their own cast or die.

A sample similar type monument cap showing the quality of inscription, depth of indentation, and degree

DRIVE ROD:

The drive rod shall be a Minimum 5/8-inch and Maximum 1-inch nominal diameter of durable material.

The drive rod and anchoring system material must be durable and have corrosion-resistant properties in the following environments: acids, bases (alkaline), salts, and dissimilar materials (reduced galvanic reaction).

The rods shall be 24 inches long plus or minus 1 inch.

Minimum - Maximum length = 23” – 25”

ANCHORING SYSTEM:

The number of anchors: Minimum – 3 and Maximum – 4 steel anchors to secure the marker into position.

Length of anchors: Minimum – 2 1/2” of steel anchors.

The minimum diameter of anchoring wire/rods: Minimum of 1/8” steel anchors

MAGNET.

The magnet shall be a 1/4-inch diameter, 1/2-inch-thick Alnico 5 magnet or the equivalent.

The magnet shall be installed within the brass cap and held in place with epoxy or another equivalent adhesive.

ASSEMBLY:

The cap in each individual order shall be shipped unattached to the drive rod as the specified requestor of the order.

FINISH:

8. 38” Drive Rod with an anchoring system and BLM Bronze Cap

These specifications are for a drive rod with an anchoring system, and an unattached “brass” cap with a magnet for permanently marking survey positions on the ground. The three or four anchoring wires/rods are utilized to help prevent unauthorized persons from removing the monument from the ground. A magnet in the monument is required in order that future surveyors can readily locate the monument with a common ferrous metal detector, should the monument become buried under fill.

Specifications

BRASS CAP:

The monument brass cap shall be a silicon bronze, bronze alloy, conforming to:

reaction).

The monument cap dimensions are shown in Drawing No. 1.

The monument cap shall have a Cadastral Survey inscription conforming to the orientation, layout, and spacing as depicted in Drawing No. 2. The inscription shall be balanced and centered. All letters and numbers shall be indented (not raised), have a minimum depth of 1/32 of an inch, and shall have clean and unbroken uniform lines, and shall be clear and legible.

The monument cap shall be designed to permanently attach to the rod's upper end. After the monument has been set in the ground, the cap is attached to the rod and is held securely in place by swaging.

The monument cap top surface shall be smooth and have a medium gloss, polish-like finish with no visible pitting or other surface marks.

The U.S. Government does NOT have a cast for casting the monument cap nor does it have dies for forging the cap. It is the vendor’s responsibility to manufacture their own cast or die.

A sample similar type monument cap showing the quality of inscription, depth of indentation, and degree

DRIVE ROD:

The drive rod shall be a Minimum 5/8-inch and Maximum 1-inch nominal diameter of durable material.

The drive rod and anchoring system material must be durable and have corrosion-resistant properties in the following environments: acids, bases (alkaline), salts, and dissimilar materials (reduced galvanic reaction).

The rods shall be 38 inches long plus or minus 2 inches.

Minimum - Maximum width = 36” - 40”

ANCHORING SYSTEM:

The number of anchors: Minimum – 3 and Maximum – 4 steel anchors to secure the marker into position.

Length of anchors: Minimum – 2 1/2” of steel anchors.

The minimum diameter of anchoring wire/rods: Minimum of 1/8” steel anchors

MAGNET

The magnet shall be a 1/4-inch diameter, 1/2-inch-thick Alnico 5 magnet or the equivalent.

The magnet shall be installed within the brass cap and held in place with epoxy or another equivalent adhesive.

ASSEMBLY:

The cap in each individual order shall be shipped unattached to the drive rod as the specified requestor of the order.

FINISH:

9. Bronze Concrete BLM Tablet

The silicon bronze, bronze alloy shall have the following nominal chemical composition:

copper 92 silicon 4 zinc 4

Equivalency is based on the durability and corrosion-resistant properties of the monument cap in the following environments: acids, bases (alkaline), salts, and dissimilar materials (reduced galvanic reaction).

The tablet monument shall have the standard Cadastral Survey inscription conforming to Drawing No. 1. All letters and numbers shall be indented (not raised), a minimum depth of 1/32 of an inch, and shall have clean and unbroken uniform lines, and shall be clear and legible.

The tablet monument dimensions are shown in Drawing No. 2.

The surface shall be smooth and have a medium gloss, polish-like finish.

The U.S. Government does NOT have a cast for casting the monument cap nor does it have dies for forging the cap. It is the vendor’s responsibility to manufacture their own cast or die.

ASSEMBLY:

The monument tablet shall be one solid piece. An inverted “Y” design stem is flared to approximately 3/4 of an inch for anchoring in rock or concrete.

FINISH

The finished monument must be free of grease and mechanical oil on the exterior surfaces.

Drawing 1 Drawing 2

10. 3 1/4” BLM Bronze Cap

These specifications are for a 3 1/4" diameter inscribed Cadastral Survey, Bronze “Brass” Cap with plastic insert for use on a 5/8" rebar for permanently marking survey positions on the ground.

BLM 3 1/4” BRASS CAP:

The monument brass cap shall be a silicon bronze, bronze alloy, conforming to:

reaction).

The monument cap dimensions are shown in Drawing No. 1.

The monument cap shall have a Cadastral Survey inscription conforming to the orientation, layout, and spacing as depicted in Drawing No. 2. The inscription shall be balanced and centered. All letters and numbers shall be indented (not raised), have a minimum depth of 1/32 of an inch, and shall have clean and unbroken uniform lines, and shall be clear and legible.

The tap-on cap dimensions are domed, 3 1/4 inches in diameter, and designed for a compression fit when tapped onto the rebar. The monument cap shall have a socket portion that is specially shaped to fit over the outside diameter of a 5/8” rebar. After the rebar has been set in the ground, the cap is forced over the rebar and is held securely in place.

The monument cap top surface shall be smooth and have a medium gloss, polish-like finish with no visible pitting or other surface marks.

The U.S. Government does NOT have a cast for casting the monument cap nor does it have dies for forging the cap. It is the vendor’s responsibility to manufacture their own cast or die.

A sample similar type monument cap showing the quality of inscription, depth of indentation, and degree of polish acceptable under the terms of this contract is available for inspection.

A = 3 1/4” B = 1 1/4” C = 5/8”

11. 2” BLM Bronze Cap

These specifications are for a standard 2" diameter Bronze “Brass” Cap with a plastic insert for use on a 5/8" rebar for permanently marking survey positions on the ground.

STANDARD 2” BRASS CAP:

The monument brass cap shall be a silicon bronze, bronze alloy, conforming to:

reaction).

The monument cap dimensions are shown in Drawing No. 1.

The monument cap shall have a BLM inscription conforming to the orientation, layout, and spacing as depicted in Drawing No. 2. The inscription shall be balanced and centered. All letters and numbers shall be indented (not raised), have a minimum depth of 1/32 of an inch, and shall have clean and unbroken uniform lines, and shall be clear and legible.

The monument cap shall have a socket portion that is specially shaped to fit over the outside diameter of a 5/8” rebar and is held securely in place.

The monument cap top surface shall be smooth and have a medium gloss, polish-like finish with no visible pitting or other surface marks.

The U.S. Government does NOT have a cast for casting the monument cap nor does it have dies for forging the cap. It is the vendor’s responsibility to manufacture their own cast or die.

A sample similar type monument cap showing the quality of casting and polish acceptable under the terms of this contract is available for inspection.

Drawing No. 1. Drawing No. 2.

A = 2” B = 1 3/4" C = 5/8” Stamp size = 3/16”

12. 3 1/4" BLM Aluminum Cap

These specifications are a 3 1/4" diameter inscribed Cadastral Survey, Aluminum Cap with a plastic insert for use on a 5/8" rebar for permanently marking survey positions on the ground.

Specifications

BLM 3 1/4” ALUMINUM CAP

A forged monument cap is also acceptable and shall be aluminum alloy 6063 with a temper of T5 or equivalent.

Composition: Aluminum - 97-98%; Magnesium - 0.5 - 1% Silicon -0.25-0.50%; Other - less than 1%

The monument cap dimensions are shown in Drawing No. 1.

The standard Cadastral Survey inscription shall be cast or stamped into the cap as specified in Drawing No. 2. All letters and numbers shall have clean, uniform, unbroken lines, and be clear and legible. All letters and numbers shall be indented (not raised), have a minimum depth of 1/32 of an inch, and shall have clean unbroken lines, and shall be clear and legible. A sample cap showing the quality of the inscription and degree of polish is available if necessary.

The tap-on cap dimensions are domed, 3 1/4 inches in diameter, and designed for a compression fit when tapped onto the rebar. The monument cap shall have a socket portion that is specially shaped to fit over the outside diameter of a 5/8” rebar. After the rebar has been set in the ground, the cap is forced over the rebar and is held securely in place.

The U.S. Government does NOT have a cast for the cap. It is the vendor’s responsibility to manufacture their own cast.

A sample similar type monument cap showing the quality of casting and polish acceptable under the

Drawing No. 1 Drawing No. 2

A = 3 1/4” B = 1 1/4” C = 5/8”

13. 2” BLM Aluminum Cap

These specifications are for a standard 2" diameter Aluminum Cap with a plastic insert for use on a 5/8" rebar for permanently marking survey positions on the ground.

Specifications

STANDARD 2” ALUMINUM CAP

A forged monument cap is also acceptable and shall be aluminum alloy 6063 with a temper of T5 or equivalent.

Composition: Aluminum - 97-98%; Magnesium - 0.5 - 1% Silicon -0.25-0.50%; Other - less than 1%

Equivalency is based on the durability and corrosion-resistant properties of the monument cap in the following environments: acids, bases (alkaline), salts, and dissimilar materials (reduced galvanic reaction).

The monument cap dimensions are shown in Drawing No. 1.

The monument cap shall have a BLM inscription conforming to the orientation, layout, and spacing as depicted in Drawing No. 2. The inscription shall be balanced and centered. All letters and numbers shall be indented (not raised), have a minimum depth of 1/32 of an inch, and shall have clean and unbroken uniform lines, and shall be clear and legible.

The tap-on cap dimensions, 2 inches in diameter, designed for a compression fit when tapped onto the rebar.

The U.S. Government does NOT have a cast for the cap. It is the vendor’s responsibility to manufacture their own cast.

A sample similar type monument cap showing the quality of casting and polish acceptable under the

Drawing No. 1 Drawing No. 2

A = 2” B = 1 3/4" C = 5/8” Stamp size = 3/16”

14. Sub-Surface Magnet

The sub-surface magnet assembly also called a magnetic marker, is required by the Federal government to be deposited at the base of the survey monument post. The magnet is a cylindrical ceramic magnet housed within a plastic container.

MAGNET

The magnet shall be 7/8 +/- 1/32 inches diam. and 1 +/- 1/8 inch long.

The magnet shall be composed of strontium ferrite (chemically inert and anisotropic)

CONTAINER

The magnet plastic container shall be 1 7/8 to 2 5/8 inches overall in length, with 1 to 1 1/8 inches square end caps on a 1 to 1 1/8 in. diam. cylinder. It is preferable that the magnet does not move about within the plastic container.

The magnet plastic container shall be composed of polyethylene or equivalent end caps with a polyethylene or cellulose acetate cylinder or equivalent.

The magnet plastic container shall have one end cap black in color and marked THIS END DOWN; THIS SIDE DOWN; BOTTOM; or equivalent nomenclature. The other end cap and cylinder will be white or translucent white.

Upon final assembly, the case shall have no holes which would permit the intrusion of water.

The total weight of the magnet and plastic container is approximately 2 ounces.

The sub-surface magnet assembly, when deposited in the ground and oriented with the black colored end cap down, shall be detectable with a Schonstedt Instrument Company magnetic locator, model No. GA52C or equivalent at a minimum range of 8 feet below a typical ground surface.

ASSEMBLY

The sub-surface magnet assembly shall be shipped assembled with the magnet contained and properly oriented in the plastic container with both end caps attached. If the plastic end cap(s) are of a friction fit on the plastic cylinder, they shall be of a tight enough friction fit to require a minimum of 2 hands to disassemble the plastic container. The minimum tightness of the friction fit specification is to prevent the accidental disassembly of the sub-surface magnet assembly in shipping, handling, or carrying in a backpack by a surveyor.

In the event that a hole exists in the case for an aid for air escape during assembly, it shall be plugged with silicone-type material or equivalent upon assembly to prevent later water intrusion into the case.

The magnet will be oriented in the plastic container in order that the maximum detectable magnetic range is obtained (on the ground surface from the sub-surface magnet) when the black colored plastic end cap is placed in a downward position when the magnet is assembled in the plastic container and vertically aligned.

15. Orange Flexible Fiberglass Marker w/ Strip Decals

ORANGE FLEXIBLE GLASS REINFORCED COMPOSITE MARKER POST:

Minimum - Maximum length = 60” – 62” Minimum - Maximum width = 2.5” - 3.0”

Details: Durable, impact resistant, continuous glass fiber with center spline, capable of accepting the below-specified strip decal; single piece marker capable of a simple permanent installation by one person using a manual driving tool with opening size (inside dimensions) 5/8” x 3 1/4”.

LEAVING PUBLIC LANDS STRIP DECAL:

Minimum – Maximum length = 16” – 20” Minimum – Maximum width = 2.5” - 3.0” Details: Leaving public lands. With the BLM logo. White/brown. Reflective or Non-Reflective.

LAND SURVEY MONUMENT STRIP DECAL:

Minimum – Maximum length = 16” – 20” Minimum – Maximum width = 2.5” - 3.0”

Details: Land survey monument. Please do not disturb. This monument was located as a part of an official land survey. It helps define land ownership lines. For further information contact your local BLM office. With the Cadastral Survey logo and BLM logo. Yellow/ Black or White/ Black. Reflective or Non-Reflective.

PROPERTY BOUNDARY STRIP DECAL:

Minimum – Maximum length = 16” – 20” Minimum – Maximum width = 2.5” - 3.0”

Details: Property Boundary Public land Behind This Sign. With the BLM logo. Yellow/ Black or White/ Black. Non-Reflective.