S01. Amendnment 02 - Matl Specs for Bid-12012020.pdf

Part 642 National Engineering Handbook

National Standard Material Specifications

Chapter 3

521–1(210–VI–NEH, May 2001)

Material Specification 521—Aggregates for Drainfill and Filters

1. Scope This specification covers the quality of mineral aggre-gates for the construction of drainfill and filters.

2. Quality Drainfill and filter aggregates shall be sand, gravel, or crushed stone or mixtures thereof. Aggregates shall be composed of clean, hard, durable, mineral particles free from organic matter, clay balls, soft particles, or other substances that would interfere with the free-draining properties of the aggregates.

Coarse aggregate may be crushed limestone or other material that has limestone particles included. Ag-gregates from crushed limestone shall be thoroughly washed and screened to remove limestone dust, lime-stone fines, and fine soil particles. For coarse aggre-gate containing limestone, the total portion finer than the No. 4 sieve shall not contain more than 3 percent by weight of limestone. Limestone shall not be used for fine aggregates except in combination with other material, such that not more than 5 percent of the por-tion finer than the No. 4 sieve shall be limestone.

Aggregates shall be tested for soundness according to ASTM Method C 88 and shall have a weighted aver-age loss in 5 cycles of not more than 12 percent when sodium sulfate is used or 18 percent when magnesium sulfate is used.

3. Grading Drainfill and filter aggregates shall conform to the specified grading limits after being placed or after being compacted when compaction is specified. Grad-ing shall be determined by ASTM Method C 136. The percentage of material finer than the No. 200 sieve shall be determined by the method in ASTM Designa-tion C 117.

4. Storing and handling Drainfill and filter aggregates shall be stored and han-dled by methods that prevent segregation of particle sizes or contamination by mixing with other material.

National Standard Material Specifications

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(210–VI–NEH, May 2001)

National Standard Material Specifications

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(210–VI–NEH, May 2001) 522–1

1. Scope This specification covers the quality of fine aggregate and coarse aggregate for use in the manufacture of portland cement concrete.

2. Quality Aggregate shall conform to the requirements of ASTM Specification C 33 for the specified sizes. Aggregates that fail to meet any requirement may be accepted only when either:

a. The specified alternate conditions of accep-tance can be proven before the aggregates are used on the job and within a period such that no work under the contract will be delayed by the requirements of such proof, or

b. The specification for concrete expressly con-tains a provision of special mix requirements to compensate for the effects of the deficiencies.

3. Reactivity with alkalies The potential reactivity of aggregates with the alkalies in cement shall be evaluated by petrographic exami-nation and, where applicable, the chemical method of test, ASTM Designation C 289, or by the results of previous tests or service records of concrete made from similar aggregates from the same source. The standards for evaluating potential reactivity shall be as described in ASTM Specification C 33, appendix A1.

Aggregates indicated by any of the above to be poten-tially reactive shall not be used except under one of the following conditions:

a. Applicable test results of mortar bar tests made according to ASTM Method C 227 are available which indicate an expansion of less than 0.10 percent at 6 months in mortar bars made with cement containing not less than 0.8 percent alkalies expressed as sodium oxide; or

b. Concrete made from similar aggregates from the same source has been demonstrated to be sound after 3 years or more of service under conditions of exposure to moisture and weath-er similar to those anticipated for the concrete under these specifications.

Aggregates indicated to be potentially reactive, but within acceptable limits as determined by mortar bar test results or service records, shall be used only with low alkali cement, containing less than 0.60 percent alkalies expressed as sodium oxide.

4. Storing and handling Aggregates of each class and size shall be stored and handled by methods that prevent segregation of par-ticles sizes or contamination by intermixing with other material.

Material Specification 522—Aggregates for Portland Cement Concrete

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523–1(210–VI–NEH, November 2005)

1. Scope This specification covers the quality of rock to be used in the construction of rock riprap.

2. Quality Individual rock fragments shall be dense, sound, and free from cracks, seams, and other defects conducive to accelerated weathering. Except as otherwise speci-fied, the rock fragments shall be angular to subround-

ed. The least dimension of an individual rock fragment shall be not less than one-third the greatest dimension of the fragment. ASTM D 4992 provides guidance on selecting rock from a source.

Except as otherwise provided, the rock shall be tested and shall have the following properties:

Rock type 1

• Bulk specific gravity (saturated surface-dry basis)—Not less than 2.5 when tested in accordance with ASTM C 127 on samples prepared as described for soundness testing.

• Absorption—Not more than 2 percent when tested in accordance with ASTM C 127 on samples prepared as described for soundness testing.

• Soundness—The weight loss in 5 cycles shall not be more than 10 percent when sodium sulfate is used or more than 15 percent when magnesium sulfate is used.

Rock type 2

• Bulk specific gravity (saturated surface-dry basis)—Not less that 2.5 when tested in accordance with ASTM C 127 on samples prepared as described for soundness testing.

• Absorption—Not more than 2 percent when tested in accordance with ASTM C 127 on samples prepared as described for soundness testing.

• Soundness—The weight loss in 5 cycles shall be not more than 20 percent when sodium sulfate is used or more than 25 percent when magnesium sulfate is used.

Rock type 3

• Bulk specific gravity (saturated surface-dry basis)—Not less than 2.3 when tested in accordance with ASTM C 127 on samples prepared as described for soundness testing.

• Absorption—Not more than 4 percent when tested in accordance with ASTM C 127 on samples prepared as described for soundness testing.

• Soundness—The weight loss in 5 cycles shall be not more than 20 percent when sodium sulfate is used or more than 25 percent when magnesium sulfate is used.

3. Methods of soundness testing Rock cube soundness—The sodium or magnesium sulfate soundness test for all rock types (1, 2, or 3) shall be performed on a test sample of 5,000 ± 300 grams of rock fragments, reasonably uniform in size and cubical in shape, and weighing, after sampling, about 100 grams each. They shall be obtained from rock samples that are representative of the total rock mass, as noted in ASTM D 4992, and that have been sawed into slabs as described in ASTM D 5121. The samples shall further be reduced in size by sawing the slabs into cubical blocks. The thickness of the slabs and the size of the sawed fragments shall be deter-mined by the size of the available test apparatus and as necessary to provide, after sawing, the approximate 100-gram samples. The cubes shall undergo five cycles of soundness testing in accordance with ASTM C 88.

Internal defects may cause some of the cubes to break during the sawing process or during the initial soaking period. Do not test any of the cubes that break during this preparatory process. Such breakage, including an approximation of the percentage of cubes that break, shall be noted in the test report.

Material Specification 523—Rock for Riprap

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523–2 (210–VI–NEH, November 2005)

After the sample has been dried following completion of the final test cycle and washed to remove the so-dium sulfate or magnesium sulfate, the loss of weight shall be determined by subtracting from the original weight of the sample the final weight of all fragments that have not broken into three or more fragments.

The test report shall show the percentage loss of the weight and the results of the qualitative examination.

Rock slab soundness—When specified, the rock shall also be tested in accordance with ASTM D 5240.

Deterioration of more than 25 percent of the number of blocks shall be cause for rejection of rock from this source. Rock shall also meet the requirements for average percent weight loss stated below.

• For projects located north of the Number 20 Freeze-Thaw Severity Index Isoline (fig. 523–1).

Unless otherwise specified, the average percent weight loss for Rock Type 1 shall not exceed 20 percent when sodium sulfate is used or 25 per-cent when magnesium sulfate is used. For Rock Types 2 and 3, the average percent weight loss shall not exceed 25 percent for sodium sulfate soundness or 30 percent for magnesium sulfate soundness.

• For projects located south of the Number 20 Freeze-Thaw Severity Index Isoline, unless otherwise specified, the average percent weight loss for Rock Type 1 shall not exceed 30 per-

Figure 523–1 Number 20 freeze-thaw severity index isoline (map approximates the map in ASTM D 5312)

Material Specification 523 Rock for Riprap (continued)

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523–3(210–VI–NEH, November 2005) cent when sodium sulfate is used or 38 percent when magnesium sulfate is used. For Rock Types 2 and 3, the average percent weight loss shall not exceed 38 percent for sodium sulfate soundness or 45 percent for magnesium sulfate soundness.

4. Field durability inspection Rock that fails to meet the material requirements stated above (if specified), may be accepted only if similar rock from the same source has been demon-strated to be sound after 5 years or more of service under conditions of weather, wetting and drying, and erosive forces similar to those anticipated for the rock to be installed under this specification.

A rock source may be rejected if the rock from that source deteriorates in 3 to 5 years under similar use and exposure conditions expected for the rock to be installed under this specification, even though it meets the testing requirements stated above.

Deterioration is defined as the loss of more than one-quarter of the original rock volume, or severe crack-ing that would cause a block to split. Measurements of deterioration are taken from linear or surface area particle counts to determine the percentage of deterio-rated blocks. Deterioration of more than 25 percent of the pieces shall be cause for rejection of rock from the source.

5. Grading The rock shall conform to the specified grading limits after it has been placed within the matrix of the rock riprap. Grading tests shall be performed, as necessary, according to ASTM D 5519, Method A, B, or C, as ap-plicable.

Material Specification 523 Rock for Riprap (continued)

(210–VI–NEH, November 2005)

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524–1(210–VI–NEH, November 2005)

Material Specification 524—Aggregates for Roller Compacted Concrete

1. Scope This specification covers the quality of aggregate for use in the manufacture of roller compacted concrete

(RCC).

2. Quality Aggregate shall conform to the quality requirements of ASTM Specification C 33.

3. Gradation Aggregate gradation shall be within the limits provided below for the total aggregate weight in a unit volume of RCC. For the sieve sizes shown below that are larger than #4, no more than 20 percent of the total aggregate shall be retained on an individual sieve. For sieve sizes smaller than 3/8 inch, at least 3 percent of the total aggregate shall be retained on each sieve.

Sieve size Percent passing

2" 100

1-1/2" 85–100

1" 70–100

3/4" 60–84

1/2" 50–70

3/8" 40–60

#4 32–50

#8 26–42

#16 20–35

#30 14–28

#50 8–22

#100 4–15

#200 0–7

Unless otherwise specified, the fines (material passing the #200 sieve) shall have a plasticity index less than four.

Particle shape—The amount of flat and elongated particles with a length-to-width or width-to-thickness ratio greater than 3:1, as determined by ASTM D 4791, shall not exceed 25 percent on any individual sieve size group nor a weighted average of 20 percent for all of the sieve sizes in the total gradation.

4. Reactivity with alkalies The potential reactivity of aggregates with the alkalies in cement shall be evaluated by petrographic examina-tion and, where applicable, the chemical method of test, ASTM C 289, or by the results of previous tests or service records of RCC or concrete made from similar aggregates from the same source. The standards for evaluating potential reactivity shall be as described in ASTM C 33, appendix A1.

Aggregates indicated by any of the above to be poten-tially reactive shall not be used except under one of the following conditions:

a. Applicable test results of mortar bar tests made according to ASTM Method C 227 are available and indicate an expansion of less than 0.10 percent at 6 months in mortar bars made with cement containing not less than 0.8 percent alkalies expressed as sodium oxide; or

b. RCC or concrete made from similar aggregates from the same source has been demonstrated to be sound after 3 years or more of service under conditions of exposure to moisture and weather similar to those anticipated for the RCC under these specifications.

Aggregates indicated to be potentially reactive, but within acceptable limits as determined by mortar bar test results or service records, shall be used only with low alkali cement, containing less than 0.60 percent alkalies expressed as sodium oxide.

National Standard Material Specifications

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524–2 (210–VI–NEH, November 2005)

5. Acceptance Aggregates that fail to meet any requirement may be accepted only when the specification for RCC express-ly contains either:

a. Special provisions for acceptance that can be proven before the aggregates are used on the job and within a period such that no work un-der the contract will be delayed by the require-ments of such proof, or

b. Special provisions for specific mix require-ments to compensate for the effects of the deficiencies.

6. Storing and handling Aggregates shall be stored in stockpiles at specified storage areas. Separators, such as timbers, boards, or pre-cast concrete panels, shall be used between adja-cent stockpiles to prevent the contamination and in-termixing of dissimilar materials. The contractor shall be responsible for providing a system that reliably and consistently stockpiles the aggregates and allows the withdrawal of the aggregates from the stockpiles without contamination or segregation. Segregated or contaminated aggregates will not be allowed in pro-duction of RCC.

Material Specification 524 Aggregates for Roller Compacted Concrete (continued)

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(210–VI–NEH, May 2001) 531–1

Material Specification 531—Portland Cement

1. Scope

This specification covers the quality of Portland ce-ment.

2. Quality Portland cement shall conform to the requirements of ASTM Specification C 150 for the specific types of cement. When Type I Portland cement is specified, Type IS Portland blast-furnace slag cement or Type IP Portland-pozzolan cement conforming to the require-ments of ASTM Specification C 595 may be used un-less prohibited by the specifications.

When air-entraining cement is required, the contrac-tor shall furnish the manufacturer's written statement providing the source, amount, and brand name of the air-entraining component.

3. Storage at the construction site Cement shall be stored and protected at all times from weather, dampness, or other destructive elements. Ce-ment that is partly hydrated or otherwise damaged will not be accepted.

(210–VI–NEH, May 2001)531–2

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532–1(210–VI–NEH, January 2009)

Material Specification 532—Supplementary Cementitious Materials

1. Scope This specification covers the quality of supplementary cementitious materials for concrete.

2. Quality Fly ash used as a partial substitution of Portland ce-ment shall conform to the requirements of ASTM C 618, Class C or F except the loss on ignition shall not exceed 3 percent, unless otherwise specified. Lot-to-lot variation in the loss on ignition shall not exceed 1 per-cent. When specified, fly ash shall conform to one or more of the supplementary optional physical require-ments listed in ASTM C618.

Blast-furnace slag used as a partial substitution of portland cement shall conform to ASTM Standard C 989 for ground granulated blast-furnace slag.

(210–VI–NEH, January 2009)

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533–1(210–VI–NEH, November 2005)

Material Specification 533—Chemical Admixtures for Concrete

1. Scope This specification covers the quality of chemical ad-mixtures for manufacturer of portland cement con-crete.

2. Quality Air-entraining admixtures shall conform to the require-ments of ASTM Specification C 260.

Water-reducing and/or retarding admixtures shall con-form to the requirements of ASTM Specification C 494, Types A, B, D, F, or G.

Plasticizing or plasticizing and retarding admixtures shall conform to ASTM C 494, Types F or G, or C 1017 as applicable.

Accelerating or water-reducing and accelerating ad-mixtures shall be noncorrosive and conform to the re-quirements of ASTM Specification C 494, Types C and E. The manufacturer shall provide long-term test data results from an independent laboratory verifying that the product is noncorrosive when used in concrete exposed to continuously moist conditions.

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534–1(210–VI–NEH, January 2009)

1. Scope This specification covers the quality of liquid mem-brane-forming compounds suitable for spraying on concrete surfaces to retard the loss of water during the concrete curing process.

2. Quality The curing compound shall meet the requirements of either ASTM Specification C 309 or C 1315. If Type 1 is specified, a fugitive dye shall be used.

3. Delivery and storage All curing compounds shall be delivered to the site of the work in the original container bearing the name of the manufacturer and the brand name. The compound shall be stored in a manner that prevents damage to the container and protects water-emulsion types from freezing.

Material Specification 534—Concrete Curing Compound

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(210–VI–NEH, May 2001) 535–1

Material Specification 535—Preformed Expansion Joint Filler

1. Scope This specification covers the quality of preformed expansion joint fillers for concrete.

2. Quality Preformed expansion joint filler shall conform to the requirements of ASTM Specification D 1752, Type I, Type II, or Type III, unless bituminous type is specified.

Bituminous type preformed expansion joint filler shall conform to the requirements of ASTM Specification D 994, or D 1751.

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536–1(210–VI–NEH, January 2009)

Material Specification 536—Sealing Compound for Joints for Concrete and Concrete Pipe

1. Scope This specification covers the quality of sealing com-pound for filling joints in concrete pipe and concrete structures.

2. Type The compound shall be a cold-application material unless otherwise specified and shall be a single com-ponent or multiple component type.

3. Quality The sealing compound shall conform to the require-ments of one of the following specifications:

• ASTM Specification C 990—Joints for concrete pipe, manholes, and precast box sections using preformed flexible joint sealants.

• ASTM Specification C 877—External sealing bands for noncircular concrete sewer, storm drain, and culvert pipe.

• ASTM Specification D 6690—Standard Specifi-cation for Joint and Crack Sealants, Hot Ap-plied, for Concrete and Asphalt Pavements.

• ASTM Specification C 920—Elastomeric joint sealants for cold applied sealing and caulking of joints on mortar and concrete structures not subject to fuel spills. Use type S or M, grade NS for vertical joints; type S or M, grade P or NS for horizontal joints. For class 25, use M, qual-ity materials shall be used for both vertical and horizontal joints unless otherwise specified.

The sealing compound if used with other joint mate-rial, such as fillers or gaskets, shall be compatible.

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(210–VI–NEH, May 2001) 537–1

1. Scope This specification covers nonmetallic waterstops for use in joints of concrete structures.

2. Classification Classes—Nonmetallic waterstops shall be of the fol-lowing classes, as specified:

Class I shall be fabricated of either natural or synthetic rubber.

Class II shall be fabricated of vinyl chloride polymer or copolymer.

Types—Nonmetallic waterstops may be either split or solid and shall conform to the following types, as specified (see fig. 537–1):

Type A shall have ribbed anchor flanges and a smooth web. Flanges may be of uniform thickness or may have either a converging or a diverging taper toward the edges.

Type B shall have ribbed anchor flanges and a smooth web containing a hollow tubular center bulb having a wall thickness equal to at least one-half the web thickness, and the inside diameter (D) specified in the specifications or shown on the drawings. Flanges may be of uni-form thickness or may have either a converging or a diverging taper toward the edges.

Type C shall have a single, circular bulb-type anchor flange at each edge and a smooth web.

Type D shall have a single, circular bulb-type anchor flange at each edge and a smooth web containing a hollow tubular center bulb having a wall thickness equal to a least one-half the thickness of the web, and the inside diameter

(D) specified in the contract.

Type E shall have ribbed anchor flanges and a web molded or extruded in the form of a round or U-shaped bulb of the dimensions specified in the contract or shown on the drawings. The web bulb shall be connected at the open-end of the U by a thin membrane having a minimum thickness of 1/64 inch and a maximum thick-ness of 1/5 of the web thickness and design to prevent infiltration of wet concrete into the bulb and to tear when expansion of the joint occurs. Flanges may be of uniform thickness or may have either a converging or a diverging taper toward the edges. Auxiliary positioning or nailing flanges may be provided as long as the functioning of the web bulb is not altered.

Material Specification 537—Nonmetallic Waterstops

Figure 537–1 Types of nonmetallic waterstops

D D

W

Type A

Type B

Type C

Type D

Type E

Type F

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(210–VI–NEH, May 2001)537–2

Material Specification 537 Nonmetallic Waterstops (continued)

Type F shall have ribbed anchor flanges with at least two extra heavy ribs designed to resist displacement of the waterstop during concrete

at the center.

Type G shall be of special design conforming to the details shown on the drawings.

Sizes—Waterstops of types A through F shall be of the sizes specified in the specifications or shown on the drawings and listed in table 537–1 of this specification.

Type G waterstops shall have the dimensions shown on the drawings.

3. Physical requirements The extruded or molded material shall exhibit the properties specified herein when tested by the meth-ods specified in section 4 of this specification.

Class I waterstops

• Hardness as determined by the Shore A durom-eter method shall be a minimum of 60.

• Specific gravity shall be a maximum of 1.2.

• Tensile strength shall be a minimum of 2,500 pounds per square inch.

• Ultimate elongation shall be a minimum of 450 percent.

• Compression set shall be a maximum of 30 percent.

• Water absorption in weight measurements shall not exceed 5 percent.

• Decrease in tensile strength and ultimate elon-gation after aging shall not exceed 20 percent.

• There shall be no sign of failure due to brittle-ness at a temperature of minus 35 degrees Fahrenheit.

Class II waterstops

• Hardness as determined by the Shore A durom-eter method shall be a minimum of 60.

• Specific gravity shall be a maximum of 1.4.

• Tensile strength shall be a minimum of 1,400 pounds per square inch.

minimum of 200 percent.

• There shall be no sign of failure due to flange brittleness at a temperature of 0 degrees Fahr-enheit nor of web brittleness at a temperature of minus 35 degrees Fahrenheit.

Table 537–1 Sizes of waterstops

Size designation

Web thickness

(T) (inches)

Width (W) (inches)

1 1/16 5 1/4

2 3/32 3 3/4

3 3/32 4

4 3/32 5 1/4

5 3/32 6

6 1/8 4

7 1/8 5 1/4

8 1/8 6

9 5/32 4

10 5/32 4 1/2

11 5/32 9

12 3/16 4

13 3/16 5

14 3/16 6

15 3/16 9

16 1/4 6

17 1/4 9

18 3/8 5

19 3/8 6

20 3/8 9

21 1/2 6

22 1/2 9

23 1/2 12

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(210–VI–NEH, May 2001) 537–3

• Decrease in either tensile strength or ultimate elongation after accelerated extraction shall not exceed 15 percent.

• Results of alkali exposure:

a. After immersion for 7 days, the sample shall exhibit no loss of weight and a maximum weight gain of 0.25 percent, and the hard-ness measured by the Shore A durometer method shall not vary more than 5 points either plus or minus from the untreated sample.

b. After immersion for 30 days, the sample shall exhibit no loss of weight and a maxi-mum weight gain of 0.40 percent, and the dimensions of the treated sample shall not vary by more than 1 percent from the un-treated sample.

4. Test methods Testing shall be conducted by the methods cited herein. All cited test methods are included in ASTM as follows:

a. Hardness shall be determined by ASTM D 2240.

b. Specific gravity shall be determined by ASTM D 792.

c. Tensile strength shall be determined by ASTM D 412 for Class I waterstops and ASTM D 638 for Class II waterstops.

d. Ultimate elongation shall be determined by ASTM D 412 for Class I waterstops and ASTM D 638 for Class II waterstops.

e. Compression set shall be determined by ASTM D 395.

f. Water absorption shall be determined by ASTM D 570.

g. Tensile strength and ultimate elongation after aging shall be determined by ASTM D 412 for Class I waterstops and ASTM D 638 for Class II waterstops.

h. Brittleness shall be determined by ASTM D 746 for Class II waterstops.

i. Accelerated extraction shall be accomplished by procedures outlined by United States Army Corps of Engineers (USACE), Concrete Re-search Division (CRD) C 572 under the follow-ing conditions:

(1) Samples shall not be less than 1/16 inch nor more than 1/8 inch in thickness.

(2) The immersion medium shall be a solution prepared by dissolving 5 grams of chemi-cally pure sodium hydroxide and 5 grams of chemically pure potassium hydroxide in 1 liter of water.

(3) The samples shall be immersed in the medium for 14 days at a temperature of 145 degrees Fahrenheit, plus or minus 5 degrees Fahrenheit.

(4) During the period of immersion, air shall be gently bubbled through the medium from a 0.25-inch diameter glass tube at an approximate rate of one bubble per sec-ond.

(5) Fresh medium shall be provided each day.

(6) Samples need not be dipped in acetone.

j. The effects of alkalies shall be determined by USACE CRD C 572 under the following condi-tions:

(1) Sample shall have a maximum thickness of

0.25 inch.

(2) The immersion medium shall be as de-scribed for accelerated extraction above.

(3) Fresh medium shall be provided every 7days.

(4) The samples shall be immersed in the me-dium for 30 days.

(5) Samples need not be dipped in acetone.

5. Condition Waterstops shall be extruded or molded in such a manner that the material is dense and homogeneous throughout and free from voids, tears, thins, inden-tations, or other imperfections. Unless otherwise

Material Specification 537 Nonmetallic Waterstops (continued)

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(210–VI–NEH, May 2001)537–4 specified, waterstops shall be symmetrical in shape and uniform in dimensions and shall be furnished in continuous strips a minimum length of 50 feet. Factory splices shall have a minimum tensile strength of 50 percent of the unspliced section.

6. Packaging and storing Waterstops shall be packaged and stored by methods that provide protection from prolonged exposure to direct sunlight and/or excessive heat.

Material Specification 537 Nonmetallic Waterstops (continued)

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(210–VI–NEH, May 2001) 538–1

1. Scope This specification covers the quality of material for metal waterstops as specified for reinforced concrete installation.

2. Material Metal waterstops shall be made of copper or galva-nized steel as specified. Waterstops that require form-ing of the metal involving sharp bends shall be made of copper, which shall be soft and pliable so bending to an inside radius equal to its thickness without crack-ing will occur at temperatures less than 180 degrees Fahrenheit.

3. Quality Metal for waterstops shall conform to the require-ments of the applicable ASTM Standard:

• Copper—ASTM Specification B 152

• Zinc-coated (galvanized) steel—ASTM Specifi-cation A 653

Material Specification 538—Metallic Waterstops

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539–1(210–VI–NEH, January 2009)

1. Scope This specification covers the quality of steel reinforce-ment for reinforced concrete.

2. Quality All reinforcement shall be free from loose or flaky rust, soil, oil, grease, paint, or other deleterious matter.

Steel bars for concrete reinforcement shall be grade 40, 50, or 60 deformed bars conforming to one of the following specifications:

• Deformed and plain billet-steel bars for con-crete reinforcement—ASTM A 615

• Rail-steel deformed bars for concrete reinforce-ment—ASTM A 996

• Axle-steel deformed bars for concrete rein-forcement—ASTM A 996

Dowels shall be plain round bars conforming to the same specifications listed above for steel bars.

Fabricated deformed steel bar mats for concrete reinforcement shall conform to the requirements of

ASTM A 184.

Plain steel welded wire reinforcement for concrete reinforcement shall conform to the requirements of

ASTM A 185.

Deformed steel welded wire reinforcement for concrete reinforcement shall conform to the require-ments of ASTM A 497.

Epoxy-coated steel bars for concrete reinforcement shall conform to the requirements of ASTM A 775.

3. Dimensions of welded wire reinforcement Gauges, diameters, spacing, and arrangement of wires for welded steel wire fabric shall be as defined for the specified style designations.

4. Storage Steel reinforcement inventories at the site of the work shall be stored above the ground surface on platforms, skids, or other supports and shall be kept clean and protected from mechanical injury and corrosion.

Material Specification 539—Steel Reinforcement (for concrete)

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547–1(210–VI–NEH, January 2009)

1. Scope This specification covers the quality of Poly Vinyl Chloride (PVC), Polyethylene (PE), High Density Poly-ethylene (HDPE), and Acrylonitrile-Butadiene-Styrene (ABS) plastic pipe, fittings, and joint materials.

2. Material Pipe—The pipe shall be as uniform as commercially practicable in color, opaqueness, density, and other specified physical properties. It shall be free from vis-ible cracks, holes, foreign inclusions, or other defects.

The dimensions of the pipe shall be measured as pre-scribed in ASTM D 2122.

Unless otherwise specified, the pipe shall conform to the requirements listed in this specification and the applicable reference specifications in table 547–2, the requirements specified in Construction Specification 45, Plastic Pipe, and the requirements shown on the drawings.

Fittings and joints—Fittings and joints shall be of a schedule, SDR or DR, pressure class, external load carrying capacity, or pipe stiffness that equals or exceeds that of the plastic pipe. The dimensions of fittings and joints shall be compatible with the pipe and measured in accordance with ASTM D 2122. Joint and fitting material shall be compatible with the pipe material. The joints and fittings shall be as uniform as commercially practicable in color, opaqueness, den-sity, and other specified physical properties. It shall be free from visible cracks, holes, foreign inclusions, or other defects.

Fittings and joints shall conform to the requirements listed in this specification, the requirements of the applicable specification referenced in the ASTM or AWWA specification for the pipe, the requirements specified in Construction Specification 45, and the requirements shown on the drawings.

Solvents—Solvents for solvent welded pipe joints shall be compatible with the plastic pipe used and shall conform to the requirements of the applicable specification referenced in the ASTM or AWWA specifi-cation for the pipe, fitting, or joint.

Gaskets—Rubber gaskets for pipe joints shall con-form to the requirements of ASTM F 477, Elastomeric Seals (Gaskets) for Jointing Plastic Pipe.

3. Perforations When perforated pipe is specified, perforations shall conform to the following requirements unless oth-erwise specified in Construction Specification 45 or shown on the drawings:

a. Perforations shall be either circular or slots.

b. Circular perforations shall be 1/4 ± 1/16-inch diameter holes arranged in rows parallel to the axis of the pipe. Perforations shall be evenly spaced along each row such that the center-to-center distance between perforations is not less than eight times the perforation diameter.

Perforations may appear at the ends of short and random lengths. The minimum perforation opening per foot of pipe shall be as shown in table 547–1.

Material Specification 547—Plastic Pipe

Table 547–1 Perforations

Nominal pipe size (in)

Minimum number of rows Minimum opening/foot (in2) circular slot

4 2 2 0.22

6 4 2 0.44

8 4 2 0.44

10 4 2 0.44

12 6 2 0.66

National Standard Material Specifications

Chapter 3

547–2 (210–VI–NEH, January 2009)

Rows shall be arranged in two equal groups at equal distance from the bottom on each side of the vertical centerline of the pipe. The lower-most rows of perforations shall be separated by an arc of not less than 60 degrees or more than 125 degrees. The uppermost rows of perfora-tions shall be separated by an arc not to exceed 166 degrees. The spacing of rows between these limits shall be uniform. The minimum number of rows shall be as shown in table 547–1.

c. Slot perforations shall be symmetrically located in two rows, one on each side of the pipe cen-terline. Slot perforations shall be located within the lower quadrants of the pipe with slots no wider than 1/8 inch and spaced not to exceed 11 times the perforation width. Minimum perfo-ration opening per lineal foot of pipe shall be as shown in table 547–1.

d. On both the inside and outside of the pipe, perforations shall be free of cuttings or frayed edges and of any material that would reduce the effective opening.

Material Specification 547 Plastic Pipe (continued)

National Standard Material Specifications

Chapter 3

547–3(210–VI–NEH, January 2009)

Table 547–2 Pipe specification

Pipe Specification

Poly vinyl chloride (PVC) pipe

Plastic pipe - Schedules 40, 80, 120 ...................................................................................................................ASTM D 1785

ASTM D 2466

Pressure rated pipe - SDR Series .......................................................................................................................AWWA C 900

ASTM D 2241

Plastic drain, waste, and vent pipe and fittings ...............................................................................................ASTM D 2665 Joints for IPS PVC pipe using solvent weld cement........................................................................................ASTM D 2672 Composite sewer pipe .........................................................................................................................................ASTM D 2680 Type PSM PVC sewer pipe and fittings .............................................................................................................ASTM D 3034 Large-diameter gravity sewer pipe and fittings ................................................................................................ASTM F 679 Smooth-Wall Underdrain Systems for Highway, Airport, and Similar Drainage .........................................ASTM F 758 Profile gravity sewer pipe and fittings based on controlled inside diameter ...............................................ASTM F 794 Corrugated sewer pipe with a smooth interior and fittings ...........................................................................ASTM F 949 Pressure pipe, 4-inch through 12-inch for water distribution ........................................................................AWWA C 900 Water transmission pipe, nominal diameters 14-inch through 36-inch .........................................................AWWA C 905

Polyethylene (PE) plastic pipe Schedule 40...........................................................................................................................................................ASTM D 2104 12 to 60-inch annular corrugated profile-wall polyethylene (PE) pipe and fittings ....................................ASTM F 2306 SIDR-PR based on controlled inside diameter.................................................................................................ASTM D 2239 Schedules 40 and 80 Based on outside diameter .............................................................................................ASTM D 2447 SDR-PR based on controlled outside diameter ...............................................................................................ASTM D 3035

High density polyethylene (HDPE) plastic pipe Plastic pipe and fittings .......................................................................................................................................ASTM D 3350 SDR-PR based on controlled outside diameter ...............................................................................................ASTM F 714 Heat joining polyolefin pipe and fittings ...........................................................................................................ASTM D 2657

Acrylonitrile-butadiene-styrene (ABS) pipe Plastic pipe, schedules 40 and 80 ......................................................................................................................ASTM D 1527 Composite sewer pipe .........................................................................................................................................ASTM D 2680

Material Specification 547 Plastic Pipe (continued)

National Standard Material Specifications

Chapter 3

548–1(210–VI–NEH, January 2009)

1. Scope The specification covers the quality of corrugated polyethylene pipe and fittings.

2. Pipe Corrugated polyethylene pipe shall conform to the re-quirements of ASTM F 405, ASTM F 667, ASTM F 894, AASHTO M 252, or AASHTO M 294 for the appropriate pipe sizes and fittings.

3. Fittings ASTM F 405 3-6 inch diameter pipe and fittings

ASTM F 667 8-, 10-, 12-, 15-, 18-, and 24-inch diam-eter pipe and fittings

ASTM F 894 18- to 120-inch diameter pipe and fittings

AASHTO M 252 3- to 10-inch diameter pipe and fit-tings

AASHTO M 294 12- to 36-inch diameter pipe and fit-tings

Material Specification 548—Corrugated Polyethylene Pipe

National Standard Material Specifications

Chapter 3

571–1(210–VI–NEH, January 2009)

1. Scope This specification covers the quality of metal slide gates for water control.

2. Class and type of gate The class of gate is expressed as a numerical symbol composed of the seating head and unseating head. The two numbers are separated by a hyphen with the seat-ing head listed first. For this purpose, the heads shall be expressed in terms of feet of water. Gates shall be of the specified types as defined:

Light duty Type MLS-1 Cast iron with cast iron seat facings Type MLS-2 Fabricated metal

Moderate duty Type MMS-1 Cast iron with bronze seat facings, cast iron or galvanized structural steel guides, and galvanized steel, bronze, or stainless steel fasteners.

Type MMS-2 Cast iron with bronze seat facings, cost iron or stainless steel guides, and bronze or stainless steel fasteners. Guides and fas-teners are stainless steel, when specified.

Heavy duty Type MHS-1 Have gray cast iron slides, frames, guides, and yokes, and are fitted with bronze seat facings, bronze wedges and wedge blocks or wedge seat facings, and bronze stem blocks or thrust nuts;

bronze or stainless steel fasteners; and cold rolled steel stems except where stainless steel stems are specified.

Type MHS-2 Have gray cast iron slides, frame, guides, and yokes, and are fitted with stainless steel seat facings, wedges, wedge seat facings, stems and fasteners; and auste-nitic cast iron stem blocks or thrust nuts.

Type MHS-3 Have austenitic gray cast iron slides, frames, guides, and yokes, and are fitted with nickel-copper alloy seat facings, wedges, wedge seat facings, stems and fasteners; and austenitic cast iron stem blocks or thrust nuts.

3. Quality of material Material for slide gates and appurtenances shall con-form to the requirements of the applicable specifica-tions listed below for the alloy, grade, type, or class of material and the condition and finish appropriate to the structural and operational requirements.

Material ASTM specification

Cast iron and gray cast iron .................... A 48, Class 30 A 126, Class B Austenitic cast iron................................................. A 436 Structural steel shapes, plates, .............................. A 36 and bars Cold rolled steel ...................................................... A 108 Carbon steel bars .....................................A 108 or A 575 Stainless steel ..............................................A 167, A 276, A 582; Type 302, 303, 304, or 304L Castings, nickel and nickel alloy .......................... A 494 Carbon steel sheets and strips ............................ A 1011 Zinc-coated carbon steel sheets.............A 653 or A 924 Bronze bar, rods, shapes .............................B 21 or B 98 Naval bronze.............................................................. B 21 Phosphor bronze ......................................B 103 or B 139 Manganese bronze ...................................B 138 or B 584 Silicon bronze.............................................B 98 or B 584 Cast bronze .............................................................. B 584 Nickel-copper alloy plate, sheet, ......................... B 127 strip Nickel-copper alloy rod or bar .............................. B 164 Rubber for gaskets and seals D 395, D 412, D 471, D 572, or D 2240

Galvanizing (zinc coating) shall conform to the re-quirements of Material Specification 582.

Material Specification 571—Slide Gates

National Standard Material Specifications

Chapter 3

571–2 (210–VI–NEH, January 2009)

4. Fabricated metal gates (light duty gates) Fabricated metal gates shall be built to withstand the seating head expressed by the gate class designation.

Unless otherwise specified, the gates shall be galva-nized steel with flat-back frames.

5. Cast iron gates (light duty gates) The frame shall be cast iron of the specified type. The front face shall be machined to receive the gate guides.

The gate slide shall be cast iron and shall be fabri-cated to withstand the seating and unseating heads expressed by the gate class designation as defined in section 2 of this specification.

Grooves shall be cast on the vertical sides of the slide to match the guide angles.

The gates guides shall be galvanized structural steel and shall be fabricated to withstand the total thrust of the gate slide from water pressure and wedge action under maximum operating conditions.

Wedges and wedge seats shall have smooth bearing surfaces. Wedges may be cast as integral parts of the slide. Removable wedges and wedge seats shall be fas-tened to the slide, frame, or guides by means of suit-able studs, screws, or bolts and shall be firmly locked in place after final adjustment. Each interacting set of wedge and wedge seat shall be adjustable as needed to ensure accurate and effective contact. Adjusting bolts or screws shall be bronze or galvanized steel.

Seat facings shall be machined to a smooth finish to ensure proper watertight contact.

6. Frame or seat (moderate and heavy duty gates) The frame shall be cast iron and of the specified type.

The front face shall be machined to receive the gates guides, and the rear face shall be machined as required to match the specified attaching means. For heavy duty gates, a dovetailed groove shall be machined on the perimeter of the front face to receive the seat facing.

7. Gate slide (moderate and heavy duty gates) The gate slide shall be cast iron, rectangular in shape, and shall have horizontal and vertical stiffening ribs of sufficient section to withstand the seating and unseat-ing heads expressed by the gate class designation as defined in section 2 of this specification. For heavy duty gates, a dovetailed groove shall be machined on the perimeter of the slide face to receive the seat facing.

Tongues shall be machined on the vertical sides of the slide along its entire height to match the guide grooves and angles with a maximum clearance of 1/16 inch for gates smaller than 54 inches by 54 inches, and 1/8 inch for larger gates.

A nut pocket with reinforcing ribs shall be integrally cast on the vertical centerline and above the horizontal centerline of the slide. The pocket shall be of a shape adequate to receive a flat-backed thrust nut or stem block and shall be built to withstand the opening and closing thrust of the stem.

8. Gate guides (moderate and heavy duty gates) The gate guides shall be built to withstand the total thrust of the gate slide from water pressure and wedge action. The gate guides shall be cast iron for heavy duty gates.

Grooves shall be machine-in cast iron guides to re-ceive the tongue on the gate slide throughout the entire length of the guide.

The guides shall be of adequate length to retain a mini-mum of one-half the height of the gate slide when the gate is fully opened.

9. Wedges and wedge seats (moderate and heavy duty gates) Pads for supporting wedges, wedge seats (or blocks), and wedge loops (or stirrups) shall be cast as integral parts of the gate frame, slide, or guides and shall be accurately machined to receive those parts.

Material Specification 571 Slide Gates (continued)

National Standard Material Specifications

Chapter 3

571–3(210–VI–NEH, January 2009)

Wedges and wedge seats shall have smooth bear-ing surfaces for moderate duty gates and shall have machine finish bearing surfaces for heavy duty gates.

Removable wedges may be cast as integral part of the slide for moderate duty gates. Wedges shall be fastened to the gate slide, frame, or guides with suit-able studs, screws, or bolts and shall be firmly locked in place after final adjustment. Each interacting set of wedge and wedge seat shall be adjustable as needed to ensure accurate and effective contact.

10. Seat facing Moderate duty gates—Seat facings shall be ma-chined to a smooth finish to ensure proper watertight contact. Bronze facings shall be securely attached by welding or other approved methods.

Heavy duty gates—Seat facings shall be pressed or impacted into the machined dovetailed grooves on the gate slide and frame and machined to a smooth finish to ensure proper watertight contact.

11. Yoke When a self-contained gate is specified, the yoke shall be of such design as to withstand the loads resulting from normal operation of the gate. For moderate and heavy duty gates, cast iron yokes shall be provided with machined pads for connecting to the ends of gate guides and to receive the stem thrust cap or hand-wheel lift.

12. Flush bottom seal (heavy duty gate) When a flush bottom sealing gates is specified, a solid, square-corner type rubber seal shall be provided at the bottom of the gate opening. It shall be securely attached either to the bottom of the slide or to the frame. Metal surfaces bearing on the rubber seal shall be smooth and rounded as necessary to prevent cut-ting of the seal during gate operation.

13. Gate stem and lift (or hoist) The gate stem and lift/hoist shall be of the specified type, size, and capacity and, if hand operated, shall be capable of moving the gate slide under normal condi-tions, following unseating from the wedging device, with a pull on the handwheel or crank of not more than 25 pounds with the specified seating and/or un-seating head of water against the gate.

Unless otherwise specified, the stem shall be carbon steel and shall be furnished in sections as necessary to permit reasonable ease in installation. Couplings shall be bolted, pinned, or keyed to the stem. The stem shall be furnished with rolled or machine-cut 29 degree Acme threads of sufficient length to completely open the gate. The threads shall be smooth and of uniform lead and cross-section, such that the nut can travel the full length without binding or excessive friction.

For moderate and heavy duty gates, the stem shall be threaded for connection to the stem block or thrust nut on the gate slide.

The lift shall be compatible with the type of stem furnished. Unless otherwise specified, the lift nut shall be cast bronze for light and moderate duty gates and cast manganese bronze for heavy duty gates and shall be fitted with ball or roller thrust bearings designed to withstand the normal thrust developed during open-ing and closing of the gate at the maximum operat-ing heads. All gears, sprockets, and pinions shall be machine-cut, with ratios and strength adequate to withstand expected operating loads. Sufficient grease fittings shall be provided to allow lubrication of all moving parts. An arrow and the word "open" shall be cast on the rim of the handwheel or on the lift housing to indicate the direction of gate opening.