619.01 Description. This item shall consist of furnishing and
erecting wire fence, chain link fence, and gates ac cording to the plans and these specifications, and in reasonably c lose conformity to the lines, grades, and alignment shown on the plans or as directed. Types of wire fence specified will be as follows:
a.Type A fence shall be constructed with woven and ba rbed wire mounted on wood or steel posts utilizing a sel ected grade of materials.
b.Type B fence shall be constructed with barbed wire mounted on wood or steel posts utilizing a selected grade o f materials.
c.Type C fence shall be constructed with woven and ba rbed wire mounted on wood or steel posts utilizing a com mercial grade of materials.
d.Type D fence shall be constructed with barbed wire, mounted on wood or steel posts, utilizing a commercial grad e of materials.
619.02 Materials. (a) General. The materials used shall be new
and shall comply with the requirements for the clas s and type of material specified. All steel items shall meet the requirements of Subsection 106.01. 465 (1) Concrete for setting posts shall comply with Sectio n 802 for Class M Concrete or may be a bagged commercial concrete mix which meets the strength requirements of Class M Concrete. The Department will perform all acceptance sampling and testing at the frequencies shown for Contractor acceptance testing in Subsection 802.06.
2.Timber preservative shall comply with the applicabl e requirements of the current AWPA book of standards.
3.Wood posts and braces shall be pressure treated, se asoned, sound, and reasonably straight southern pine or Dou glas Fir of the West Coast Region. The posts shall be round and fr ee from excessive end splits. Before pressure treatment, t he posts and braces shall have the bark removed, the knots trimm ed flush, and the ends cut square. Posts that are to be driven s hall have the small end tapered.
4.Metal posts and braces shall be of good commercial quality iron or steel and may be tubular, T, U, Y, or other shape manufactured for use as fence posts or braces. The minimum weight per foot (meter) and the length shall be acc ording to the plans.
b.Types A and B Wire Fence.
1.Wood posts and braces of the size and length shown on the plans shall be treated by a standard empty cell or full cell process according to AWPA practice using creosote and retai ning a minimum of 8 pounds per cubic foot (125 kg/cu m) of wood; or using pentachlorophenol, or chromated copper arsena te and retaining a minimum of 0.4 pounds per cubic foot (6 kg/cu m) of wood.
2.Woven Wire farm fence shall be AASHTO M 279 design number 1047-6-11, Grade 60. Smooth line wire shall be 9 gage. Both woven wire and smooth line wire shall comply w ith AASHTO M 279, Class 3 galvanizing. As an alternate to the woven wire farm fence specif ied above, AASHTO M 279 design number 1047-6-12½, Grade 125, s hall be used, with each wire consisting of high tensile wire, complying with AASHTO M 279, with a minimum zinc co ating at 0.90 oz/ft 2 (275 g/m 2) for 12½ gage wire and 0.95 oz/ft 2 (290 466 g/m 2) for 10½ gage wire. As an alternate to the smooth line wire specified above, 10½ gage, Grade 125 high tensile w ire shall be used, with each wire complying with AASHTO M 279, w ith a minimum zinc coating at 0.95 oz/ft 2 (290 g/m 2).
3.Barbed wire shall be 12½ gage with four point barbs and shall conform to AASHTO M 280, Class 3 galvanizing. As an alternate to the barbed wire specified above, the wire may consist of two strands of high tensile wire, ea ch having the same galvanizing and breaking strength as Class 3, 12½ gage wire, and complying with the remaining requirements of AASHTO M 280 for a four point barb. The minimum gage of the high tensile barbed wire sh all be as follows: Strand wire gage 15½ Barb wire gage 17
4.Staples used to attach the wire fencing to wood pos ts shall be galvanized 9 gage, 1½" (38 mm) in length.
5.Steel line posts shall be galvanized and comply wit h AASHTO M 281. Tubular steel posts shall comply wit h Grade 1 or Grade 2 of AASHTO M 181, or an approved alternat e of Grade 2. Alternates to Grade 2 steel posts shall e qual or exceed the performance criteria of AASHTO M 181 as determi ned by the Engineer of Materials.
6.Hardware and fittings shall comply with ASTM F 626. Any miscellaneous hardware or fittings not mentione d in ASTM F 626 shall be galvanized according to the app licable requirements of AASHTO M 111 or M 232.
c.Types C and D Wire Fence.
1.Wood posts and braces of the size and length shown on the plans shall be pressure treated with creosote, pent achlorophenol, or chromated copper arsenate.
2.Metal posts, braces, and fittings, shall be galvani zed or painted. Metal posts for each section of fence bet ween property lines shall be all galvanized or all painted. 467 (3) Woven wire farm fence shall be AASHTO M 279 design number 939-6-12½, and conform to commercial galvani zation. Smooth line wire shall be 9 gage and conform to com mercial galvanization.
4.Barbed wire shall be 12½ gage with four point barb s on 4″ to 5 ″ (100 mm to 125 mm) centers and shall conform to commercial galvanization. A 15½ gage high tensile wire may be used in lieu of 12½ gage wire.
5.Staples used to attach the wire fencing to wood po sts shall be galvanized 9 gage, 1½ ″ (38 mm) in length.
d.Chain Link Fence.
1.Material for chain link fence shall comply with AASHTO M 181 Type I, Class D; Type II; or Type III. Steel members for posts, rails, expansion sleeves, and ga te frames may be either Grade 1 or Grade 2. The shape, size, and length of posts and rails, and the height, gage, and mesh size of f abric shall be as shown on the plans. Alternates to Grade 2 steel me mbers shall equal or exceed the performance criteria of AASHTO M 181 as determined by the Engineer of Materials.
2.Hardware and Fittings shall comply with ASTM F 626. Any miscellaneous hardware or fittings not mentione d shall be galvanized according to AASHTO M 111 or M 232. Aluminum alloy fabric shall be used only with alumi num posts. Aluminum coated steel fabric and galvanized steel f abric, Class D, shall be used only with Grade 1 or Grade 2 steel po sts.
e.Gates.
1.Frames for gates shall be galvanized steel or alumi num of the type and length shown on the plans. Frames sha ll be Grade 1 or Grade 2. They shall be fastened at the corners by clamps and braces or welded. If steel is used the entire weld shall be galvanized. Commercial gates may be used if they a re equal to or better than the planned gates as determined and app roved by the Engineer.
2.The gate fabric shall be of the same type material and be in accordance with the same specifications as the adjo ining fence. 468 619.03 Construction Requirements. (a) General. The fence shall be erected parallel to and at a specified dis tance from the right- of-way line, or as directed. The fence grade shall generally follow the ground contour, but shall present a uniform app earance. Minor grading along the fence line may be necessary to ob tain the desired uniformity in fence grade. The fence alignment may be adjusted by the Engineer to preserve trees, land monuments, pro perty corner markers, and the position of right-of-way monuments in place or planned. The Contractor may clear trees from a str ip approximately 10' (3 m) wide adjacent to and within the right-of- way to accommodate fence erection equipment. Grubbing or scalping of the cleared strip shall not be permitted to prevent damage to trees, shrubs, grass, and other vegetation designated to r emain. Clearing shall be performed according to Section 201.06.
b.Wire Fence. Line posts and pull assemblies shall be spaced as shown on the plans. Wood line, corner, gate, an d pull posts may be driven in place provided the driving does not da mage the post; or they may be set in dug holes and backfilled with ea rth thoroughly compacted as placed; or set in concrete. Metal cor ner, gate, end, and pull posts shall be set in concrete. Wire shall no t be stretched onto posts set in concrete until seven days after placem ent of posts. Posts shall be set plumb. The Contractor has the option of using wood or stee l posts and braces unless otherwise specified, but shall use th e same material on the entire project. Wood end, corner, and pull pos ts may be used with steel line posts. When solid rock is encountered, the posts shall be set to the required depth for soil unless the penetration into solid rock would exceed 10" (250 mm) for line posts and 16" (400 mm) for end, corner, gate, and pull posts. In such cases, the p osts shall be set into the solid rock a minimum depth of 10" (250 mm) for line posts and 16" (400 mm) for end, corner, gate, and pull posts. The hole in the rock shall have a minimum cross section dimension 1 " (25 mm) greater than the post to be set. The posts shall b e cut before setting to give the proper length above ground surface. Th e hole shall be filled with Class M Concrete or a grout consisting of 1 part Portland cement and 3 parts concrete sand. 469 Wire tension braces for wood pull, end, and corner assemblies shall consist of a 9 gage wire passed around the po sts to form a double wire. The wire shall be fastened to each po st and the ends fastened together to form a continuous wire. The w ires shall then be twisted together until the wire is in tension. Where the new fence joins an existing fence, the tw o shall be attached in a satisfactory manner, with end posts b eing set as directed. Where the proposed fence intersects an e xisting fence, the end post shall be set for the existing fence clear of the proposed fence line as shown on the plans. The wire of the existing fence shall be stapled to the end post. When the point o f intersection falls more than 2' (0.6 m) from a post on Type A and B fe nce, a line post shall be set at the intersection. Pull post assemblies shall be placed at intervals o f not more than 330' (100 m) in straight alignment on level or unif ormly sloping ground, and at sharp vertical angle points in the l ine. Corner post assemblies shall be placed at all horiz ontal angle points of 15° or more in the fence. When the dista nce from a corner post to the next corner or pull post is less than 1 65' (50 m), one approach span on the corner assembly may be omitted . End post assemblies at fence ends, gates, bridge ab utments, and on banks of streams shall be erected in the same ma nner as corner construction. Extra length posts shall be provided for crossing small streams, ditches, ravines, or soft ground. Additio nal depth of set shall be secured in soft ground as directed. The wire shall be attached to the face of the post away from the highway, except on curves where the fencing shall b e attached on the outside of the curve. The wire shall be attach ed to wood line posts with staples driven at right angles to the gr ain and at a slight downward angle to attain the best anchorage. The s taples shall not be driven tightly against the wire but shall leave just enough free space for adjustment in tension due to changes in t emperature. Wire shall be attached to steel line posts with approved galvanized clips. All barbed wire and alternate line wires of woven f abric shall be fastened to each line post. Barbed wire and all li ne wires of woven fabric shall be fastened to end, corner, and pull p osts by wrapping the wire around the posts and tying the wire back o n itself with not 470 less than 3 tightly wrapped twists. Splicing of ba rbed wire and woven wire shall be done according to the plans. Tension for stretching the barbed wire and woven wi re shall be applied by use of standard wire stretchers manufact ured for that purpose. The use of trucks, tractors, and similar equipment will not be permitted in the tensioning operation, except as anchors.
c.Chain Link Fence. All posts shall be set in concrete as shown on the plans, plumb, and true to line and gra de. The concrete shall comply with Subsection 619.02, and shall be t horoughly tamped around the posts. The posts shall be equall y spaced in the line of fence not to exceed the spacing shown on th e plans. The top of the footing shall be domed to drain water away f rom the post. Concrete in post footings shall be at least 7 days old before stretching and securing fabric to posts, bracing, o r hanging of gates. Top rails, when required, shall pass through post c aps and shall be securely fastened to end, brace, pull, and corne r posts. Joints in top rails shall be made with expansion sleeve coupl ings to provide a substantial connection and allow for expansion and contraction of the rail. Before the fence fabric is placed, the tension wire shall be placed at the proper location; stretched taut; securely an chored to each end, corner, or intermediate brace post; and satisfactor ily fastened to each line post. The fence fabric shall be attached to the face of t he post away from the highway, except on curves, where the fabri c shall be placed on the outside of the curve. The end of the fabric shall be attached to the post s by means of a stretcher bar threaded through the end loops of the fabric and secured to the posts with clamps and bolts. The fa bric shall be stretched to remove all slack with approved stretch ing equipment. The stretched fabric shall be secured to line posts , top rail, braces, and tension wire with specified fabric fasteners. Fabric fasteners shall be placed on line posts at not greater than 1 4" (350 mm) centers and on top rail, braces, and tension wire a t not greater than 24" (600 mm) centers. Stretching operations shall be repeated at approximately every 100' (30 m) for each run of fen ce. The use of 471 trucks, tractors, and similar equipment will not be permitted in the stretching operation, except as anchors. Splicing of the fabric shall be done by interweavin g a wire picket through each end loop of each piece of fabric in a manner that will neatly and securely fasten the lengths of fabric to gether.
d.Gates. Gates of the length and type shown on the plans s hall be constructed at the locations shown on the plans or as directed.
619.04 Method of Measurement. (a) Fence will be measured by
the linear foot (meter) in place along the midpoint in height of the fence from outside to outside of the end posts. Th e lengths of gates will be excluded from this measurement.
b.Gates will be measured by the unit.
619.05 Basis of Payment. Work completed and accepted and
measured as provided above will be paid for as foll ows:
a.Wire Fence will be paid for at the contract unit pr ice bid per linear foot (meter) for Wire Fence of the type spec ified.
b.Chain Link Fence will be paid for at the contract u nit price bid per linear foot (meter) for Steel Chain Link Fe nce or Aluminum Chain Link Fence of the height specified.
c.Gates will be paid for at the contract unit price b id per each for Gates of the type and dimensions specified. The contract unit prices mentioned above shall be f ull compensation for clearing, grading, setting posts, and erecting fence; for excavation and backfill; for furnishing materia ls; and for all labor, equipment, tools, and incidentals necessary to complete the work. Payment will be made under: Pay Item Pay Unit Wire Fence (Type___) Linear Foot (Meter) ___' (___m) Steel Chain Link Fence Linear Foot (Met er) ___' (___m) Aluminum Chain Link Fence Linear Foot ( Meter) ___' (___m) Steel Gates Each ___' (___m) Aluminum Gates Each
Source: , Edition.