717Structural Steel

716.14.2 Fabrication and Finish . All bar grates shall be constructed in accordance with

these specifications and in conformity with the detailed plans. Holes shall be punched or drilled in the strap bars to accommodate the round bars. The junctions of all round bars and/or strap bars shall be welded. The completed bar grate shall exhibit good workmanship. After fabrication, the bar grate shall be coated with an approved commercial quality coating designed for coating steel castings and fabricat ed units. The State Materials Engineer shall approve the coating material prior to application. SECTION 717 - STRUCTURAL STEEL

717.01 Structural Steel .

717.01.1 General . Steel shall be furnished according to the specifications in this section.

Unless otherwise specified, structural carbon st eel shall be furnished. Steels other than those required herein may be specified on the plans. When steel is used in welded construction, the welding procedure shall be su itable for the steel and the intended service.

717.01.2 Requirements for Structural Steel . Structural steel sha ll meet the applicable

AASHTO and ASTM Standards, which sha ll include the Supplementary Bend Test Requirement and the following Charpy V-Notch Requirements for minimum service temperature 0°F and above: ASTM DESIGNATION THICKNESS & FABRICATION MINIMUM CHARPY V-NOTCH ENERGY @ TEMPERATURE A 36 *A 588 *A 588 *A 588 *A 572 *A 572 *A 572 A 514 A 514 A 514 A 852 A 852 A 852 Up to 4" Up to 4" Mechanically Fastened Up to 2" Welded Over 2" to 4" Welded Up to 4" Mechanically Fastened Up to 2" Welded Over 2" to 4" Welded Up to 4" Mechanically Fastened Up to 2½" Welded Over 2½" to 4" Welded Up to 4" Mechanically Fastened Up to 2½" Welded Over 2½" to 4" Welded 15 ft. lb. @ 70°F 15 ft. lb. @ 70°F 15 ft. lb. @ 70°F 20 ft. lb. @ 70°F 15 ft. lb. @ 70°F 15 ft. lb. @ 70°F 20 ft. lb. @ 70°F 25 ft. lb. @ 30°F 25 ft. lb. @ 30°F 35 ft. lb. @ 30°F 20 ft. lb. @ 50°F 20 ft. lb. @ 50°F 25 ft. lb. @ 50°F * If the yield strength of the material excee ds 65 ksi, the temperature for the CVN value for acceptability will be reduced 15°F for each increment or fraction thereof of 10 ksi above 65 ksi. The procedure for sampling and testing shall be in accordance with ASTM A 673. The

717.01.3 Structur al Carbon Steel . Structural carbon steel for bolted and welded

construction shall be in accordance with ASTM A 36.

717.01.4 Eyebars . Steel for eyebars shall be a weld able grade. These grades include

structural steel conforming to:

717.01.5 High Strength Low-Alloy Structural Steel. High-Strength Low-Alloy

Structural Steel shall conform to:

717.01.6 High Strength Low-Alloy Structural Steel for Welding . High-Strength Low-

Alloy Structural Steel for welding shall conform to:

717.01.7 High-Strength Structural Steel for Bolted Construction . High-Strength

Structural Steel for bolted construction shall conform to:

717.01.8 High-Yield-St rength, Quenched, and T empered Alloy Steel Plate . High-

Yield-Strength, Quenched and Tempered Alloy Steel Plate shall conform to:

717.01.9 Weathering Structural Steel. Where indicated on the plans, material

designated as A709, Grade HPS70W shall be high-strength, low-allow, quenched and tempered structural steel plate meeting the requirements of ASTM A709 including the supplemental requirement S83 for Non-Fracture Critical material. The Contractor is advised that quenched and tempered steel plat es are limited to a fifty (50) feet maximum delivery length from United States mills. Non-quenched and tempered Thermo-Mechani cal Controlled Processed (TMCP) HPS70W material may be directly substituted for material up to two (2) inches, provided that the chemistry of the TMCP plate is identical to Quenched and Tempered HPS70W and that the TMCP plate meets the minimum mechani cal properties for Quenched and Tempered HPS70W steel listed below. MINIMUM MATERIAL PROPERTIES Type High Strength, Low-Alloy, Quenched and Tempered Steel ASTM Designation A709, Grade HPS70W Thickness To 4” Tensile Strength, Fu 85-110 ksi Minimum Yield Strength, Fy 70 ksi The A709 HPS70W material shall meet the longitudinal Charpy V-notch requirements of Zone 1 for Non-Fracture Critical material. All other steel shall meet the requiremen ts of ASTM A709 Grade 50W. All field connections shall be made using ASTM A325, Ty pe 3 High Strength bolts. Nuts shall be heavy hex and shall conform to the requirements of ASTM A563, Grade DH3. Washers shall conform to the requirements of ASTM F436, Type 3.

717.01.10 Acceptance Procedure . Structural Steel shall be accepted on the basis of

manufacturer's certified test reports. The Contractor shall furnish the Engineer with three copies of the certified test reports.

717.02 Fasteners . Fasteners for structural steel jo ints shall conform to the ASTM

specifications with revision s, as specified herein.

717.02.1 Plain Finish Fasteners .

717.02.1 1--Bolts . Ungalvanized bolts shall meet th e requirements of ASTM A 325 or

ASTM A 490, as speci fied on the plans.

717.02.1 2--Heavy Hex Nuts . Ungalvanized nuts shall meet the requirements of ASTM

A 194, Grade 2H, or A 563, Grade DH, as specified on the plans.

717.02.1 3--Hardened Washers . Ungalvanized washers sha ll meet the requirements of

ASTM F 436. 717.02.2--Galvan ized Fasteners .

717.02.2 1--Galvanized Bolts . Bolts shall meet the requirements of ASTM A 325, Type

717.02.2 2--Galvanized Nuts . Nuts shall meet the requirements of ASTM A 563, Grade

DH. Galvanizing shall be in accordance with ASTM A 153, Class C, or ASTM B 695, Class 50. Thickness of zinc coating sha ll be measured on the wrench flats.

717.02.2 3--Galvanized Washers . Washers shall meet the requirements of ASTM F 436.

Galvanizing shall be in accordance with ASTM A 153, Class C, or ASTM B 695, Class

717.02.3 Revisions to ASTM Specifications .

717.02.3 1--ASTM A 325 . Hardness for bolt diameters 1/2- inch to 1-inch inclusive shall

have a minimum Rockwell C Hardness Number of 24 and a maximum Rockwell C Hardness Number of 33.

717.02.3 2--ASTM A 563 . Nuts that are to be galvanized shall be tapped oversize the

minimum amount required for proper assembly. The amount of overtap in the nut shall be such that the nut will assemble freely on the bolt in the coated condition and shall meet the rotational-capacity test set out in Subsection 717.02.3.4. The overtapping requirements of ASTM A 563, Subsection 7.4, shall be considered maximum values instead of mi nimum, as currently shown. Galvanized nuts shall be lubricated with a lubricant containing a dye of any color that contrasts with the color of the galvanizing.

717.02.3 3--Astm F 606.

717.02.3 3.1--Bolts . Proof load tests shall be performed in accordance with Method 1,

Length Measurement. Minimum frequency of tests shall be as specified in ASTM A 325 for "Production Lot Method." Wedge tests on full size bolts are required. If bolts are to be galvanized, the tests shall be performed after galvanizing. Minimum frequency of tests shall be as specified in ASTM A 325, "Production Lot Method." 717.02.3.3.2--Nuts . Proof load tests shall be performed in accordance with ASTM: F 606, Subsection 4.2. If nuts are to be galvanized , tests shall be performed after galvanizing, overtapping and lubricating.

717.02.3 3.3--Washers . If galvanized washers are supplied, hardness testing shall be

performed after galvanizing. The coating shall be removed prior to taking hardness measurements.

717.02.3 4--Rotational-Capacity Testing of Assemblies . Rotational-capacity tests are

required and shall be performed on all black or galvanized bolt, nut and washer assemblies by the manufacturer or distributor prior to shipping. Tests on galvanized bolts and hardware shall be performed after galvanizing. Washers are required as part of the test even though they may not be required as part of the installation procedure. Except as modified herein, the rotational-capacity test shall be performed in accordance with the requirements of ASTM A 325. The following shall apply:

717.02.4 Reporting . The results of all tests, including zinc coating thickness, required

herein and in the appropriate ASTM specifica tions shall be recorded on the appropriate document. The location where tests are performed and the date of tests shall be reported on the appropriate document. The manufacturer or distributor that performs the test shall certify that the results recorded are accurate. The manufacturer shall certify that the steel and the assembly components are domestic products.

717.02.5 Documentation .

717.02.5 1--Mill Test Report(s) (MTR) . MTR shall be furnished for all mill steel used in

the manufacture of the bolts, nuts, and washer s. MTR shall indicate the place where the material was melted and manufactured. 717.02.5.2--Manufact urer Certified Test Report(s) (MCTR) . The manufacturer of the bolts, nuts, and washers shall furnish the Department three copies of test reports (MCTR) for the items furnished. Each MCTR shall have the appropriate MTR attached. Each MCTR shall contain the information required in Subsection 717.02.4. The manufacturer performing the rotational-capacity test shall include on the MCTR the following:

717.02.3 4.

717.02.5 3--Distributor Cert ified Test Report(s) (DCTR) . The following shall be

applicable for DCTR:

717.02 4.

717.02.6 Shipping . Bolts, nuts and washers, where required, from each rotational-

capacity lot shall be shipped in the same container. If there is only one production lot number for each size of nut and washer, the nuts and washers may be shipped in separate containers. Each container shall be permanently marked with the rotational-capacity lot number such that identification will be possible at any stage prior to installation. Three copies of the appropriate MTR, MCTR or DCTR shall be furnished to the Department.

717.02.7 Final Acceptance . Final acceptance of high strength bolts, nuts, washers and

direct tension indicators will be based on tests performed on samples obtained from the project by the Department. Tests will be performed in accordance with the procedures set out in these specifications. A lot shall be defined as each shipment to a project from the manufacturer's lot number and of the same size and length. The integrity of each lot shall be maintained until tests are completed by the Department. Each lot of bolts, shall be sampled as follows: Lot Size Sample Size 150 or less 2 151 to 280 4 281 to 500 6 501 to 1,200 10 1,201 to 3,200 16 3,201 to 10,000 26 10,001 and over 40 Note: One-half of the sampled bolts will be used for tensile testing and the other one- half will be tested for coating and/or hardness. Each lot of nuts or washers shall be sampled as follows: Lot Size Sample Size 800 or less 1 801 to 8,000 2 8,001 to 22,000 3 22,001 and over 5 Note: The sample size shall be doubled when galvanized nuts or washers are specified or used. Each lot of direct tension indicators shall be sampled as follows: Lot Size Sample Size 35,000 or less 16 35,001 to 250,000 26 250,001 and over 32 Direct tension indicators shall be tested in accordance with ASTM F 959. One-half of the samples will be tested in compression and the re maining one-half will be tested for coating.

717.03 Copper Bearing Steels . When copper bearing steel is specified, the steel shall

contain not less than 0.2 percent copper. 717.04--Welded Stud Shear Connectors . Shear connector stud s shall conform to the requirements of Cold Finished Carbon Steel Bars and Shafting, ASTM A 108, Cold-Drawn Bars, Grades 1015, 1018, or 1 020, either semi or fully killed. If flux retaining caps are used, the steel for the caps shall be of a low carbon grade suitable for welding and shall comply with Cold-Rolled Carbon Steel Strip, ASTM A 109. Tensile properties as determined by tests of bar stock after drawing or of finished studs shall conform to the following requirements: Tensile Strength, minimum .................................. 60,000 Yield Strength*, minimum .................................. 50,000 Elongation, minimum .......................................... 20% in 2 inches Reduction of area, minimum ............................... 50% * As determined by a 0.2 percent offset method. Tensile properties shall be determined in accordance with the applicable sections of ASTM A 370, Mechanical Testing of Steel Products. Tensile tests of finished studs shall be made on studs welded to test plates. If fracture o ccurs outside of the middle half of the gage length, the test shall be repeated. Finished studs shall be uniform quality and condition, free from injurious laps, fins, seams, cracks, twists, bends, or other injurious defects. Finish shall be as produced by cold drawing, cold rolling, or machining. The manufacturer shall certify that the studs as delivered are in accordance with the material requirements of this section. Certif ied copies of in-plant quality control test reports shall be furnished to the Engineer upon request. The Engineer may select, at the Contractor's expense, studs of each type and size used under the contract, as nece ssary for checking the requirements of this section.

717.05 Steel Grid Flooring .

717.05.1 Steel . All steel shall conform to the Speci fication for Structural Steel of the

ASTM A 36, ASTM A 572, Grade 50, or ASTM A 588. Unless the material is galvanized, it shall have a copper content of 0.2 percent.

717.06 Pins and Rollers . Steel for pins and rollers shall conform to the designations

listed in Tables I and II below. Pins and rollers shall be accurately turned to the dimensions shown on the drawings and shall be straight, smooth, and free from flaws. Pins and rollers more than nine inches in diameter shall be forged rollers and annealed. Pins and rollers nine inches or less in diameter may be either forged and annealed or cold-finished carbon-steel shafting. In pins larger than nine inches in diameter , a hole not less than two inches in diameter shall be bored full length along the axis afte r the forging has been allowed to cool to a temperature below the critical range, under suitable conditions to prevent injury by too rapid cooling, and before being annealed. Section 718 Section 718 SECTION 718 - TIMBER AND DIMENSION LUMBER

718.01 Timber and Dimension Lumber . General . All timber and dimension lumber

shall be Southern pine and shall conform in all respects to applicable requirements of AASHTO M 168. Inspection for conformance to these specifications will be conducted in accordance with Department SOP. Timber and dimension lumber shall be furnished in the sizes shown on the plans or as specified. Unless otherwise specified, timber and dimension lumber shall be No. 1, or better, graded according to the late st American Lumber Standards. Only one type of preservative shall be used fo r the treatment of materials for any one class of construction on a project, unless otherwise specified. Where timber and dimensional lumber is to be used in non-highway construction or use, such as decking, handrails in walking trails, or in any manner where general public exposure by touch is possible, the treatment requirements will be as per project plans and/or approved by the State Materials Engineer.

718.02 Untreated Timber and Dimension Lumber . Untreated timber and dimension

lumber shall comply with the requirements set out in Subsection 718.01.

718.03 Treated Timber and Dimension Lumber . Timber and dimension lumber to be

treated shall meet the requirements herein sp ecified and shall be treated by a pressure method to the minimum required retainage of preservative as specified on the plans or elsewhere in the specifications. Treated timbe r or dimensional lumber will not be accepted for use unless it has been inspected by an auth orized representative of the Department and found to be satisfactory both before and after treatment. Inspection prior to treatment may be waived by the Testing Engineer when the preservative will be pentachlorophenol or chromated copper arsenate.

718.03.1 Seasoning . Seasoning timber, dimension lumber, piles and poles to be treated

with preservatives shall conform to the requirements of AWPA.

718.03.2 Treatment.

718.03.2 1--General . Insofar as practicable, each charge shall consist of pieces

approximately equal in size, moisture, and sapwood content into which approximately equal quantities of preservative can be injected. Each layer of material shall be separated at each end, and at the center when necessary, by strips at least 3/8 inch in thickness. Caps, stringers, and other large timbers shall be separated by strips of at least 1/2-inch thickness. All timber and lumber shall be treated in accordance with AWPA treating practices unless otherwise specified herein. Unless otherwise directed, the type and minimum quantity of preservative shall be in accordance with TABLES 1, 2 or 3. Any treated timber or lumber to be painted shall be treated in accordance with Subsection

718.04 3, Type B solvent, or Subsection 718.04.4.