01050.00 996 Section 01050 - Fences Description
01050.00 Scope - This Work consists of constructing:
• Fences, Gates, and G ateways of barbed wire, woven wire fabric, chain link fabric, or combinations, to the lines and grades shown or directed. • Protective Fences, on and off Structure as shown or directed. All dimensions shown are horizontal and vertical measurement. Actual quantities required for t he installation may be greater depending on the Slope of the terrain.
01050.01 Definitions :
a.Fences - Fence, Gates, Gateways, and appurtenances, regardless of kinds and types.
b.Gates - Swinging units to provide an opening in the F ence line.
1.Single Gate - A unit of 16 feet or less.
2.Double Gate - Two single Gate units used together.
c.Gateway - Supported Fence wire or fabric stretched between G ate posts and fastened by b ars, wire hinges and locking devices.
d.Panel - As used in this Section, Panel is defined as t hat portion of Fence between adjacent posts.
e.Run - As used in this Section, run is defined as follows: • Fences, gates, and gateways - The length of F ence between end posts, intermediate end posts, corner posts, and G ate posts. • Bridge protective fence - A section of F ence150 feet or less in length. Materials
01050.10 Materials - Furnish Material s meeting the following requirements:
Bar Reinforcement ................................................................................ 02510.10 Barbed Wire .......................................................................................... 03010.10 Chain Link Fabric .................................................................................. 03010.30 Commercial Grade Concrete ...................................................................... 00440 Fence Gates .......................................................................................... 03010.60 Fence Grounding .................................................................. 03010.50(e) and (f) Fence Posts, Braces, and Appurtenances ........................... 02110.30, 03010.50 Guardrail Elements ................................................................................ 02820.10 Pickets ................................................................................................... 03010.31 Protective Fence Materials, On and Off Structures ............................... 03010.75 Vinyl Clad Fabric ................................................................................... 03010.40 Wildlife Fencing Fabric .......................................................................... 03010.21 Woven Wire ........................................................................................... 03010.20 01050.42 997 Construction
01050.40 General - Construct the several kinds and types of F ences including the assembly and
erection of all component parts and Materials complete in place at the locations shown or directed. Confine activities and operations to the area immediately adjacent to the Right-of-Way line and within the Highway Right -of-Way . Arrange for permits required from adjacent property owners to perform the Work . Schedule the installation of fencing or provide temporary fencing or other adequate means to prevent livestock from enteri ng the Project Right -of-Way , easements and adjoining properties according to 00170.92. At Bridge s, cattle passes and culverts, if shown or directed, connect the new F ence to the Structure in a manner that permits free passage of livestock under or through the Structure .
01050.41 Lines, Grades, and Preparation Work - Unless otherwise directed, set Fences so the
Fence fabric and wires are on Right -of-Way lines or Agency property lines, with posts set on Agency property. If directed, center concrete footings and Fence posts 1 foot from the Right -of-Way or property line on Agency property. Clear, grub and prepare the Fence line area. Remove all shrubs, brush, snags, downed timber, float Rock , and other obstacles, including trees up to 6 inches in diameter which interfere with F ence construction. If directed, preserve trees and geographic features on Fence lines by varying the F ence alignment to miss them . Fill or excavate ground surface irregularities which interfere with maintaining specified clearance above ground surface of the bottom wire of the F ence. Limit the width as necessary to provide a clear way for the Fence. Excavate for concrete footings to reasonably Neat Line s, but not less than the specified dimensions in Soil, or not less than 18 inches deep in Rock . Prevent disturbance of original ground at the sides and bottom of the excavation. Clear and grade Gate openings to permit the G ate to swing in a horizontal plane according to 01050.48. Dispose of materials removed under these provisions, including excess excavation, in a satisfactory manner.
01050.42 Optional Posts - Use steel or wood posts in barbed, or barbed and woven wire F ence
construction according to one of the following options, and once an option has been selected, use that option throughout the Project: Option 1: Steel posts entirely in all types of F ence. Option 2: Treated wood posts entirely in: • Type 1 Fence • Type 1-5 W Fence • Type 2 Fence • Median Fence on Median areas exceeding 16 feet in width Option 3: Steel line post in combination with treated wood end posts, intermediate end posts, corner posts and Gate posts in: 01050.43 • Type 1 Fence • Type 1-5W Fence • Type 2 Fence • Median Fence on Median areas exceeding 16 feet in width
01050.43 Installing Posts and Braces:
a.General - Set all metal end posts, intermediate end posts, corner posts, Gate posts, and chain link Fence posts in concrete foot ings. Set all other posts firmly in the ground or in concrete footings as the Contractor elects. Set posts to the depths shown. Reasonable variation in depths will be allowed and posts may be appropriately shortened or left slightly high, as approved by the Engineer, to: • Avoid unnecessary penetration or excavation in Rock or other unusually firm material. • Obtain desired grades along the F ence. Set all posts vertical, except on curved alignment set posts slightly off vertical, as directed, to offset the pull of the Fence fabric and wires. For bridge protective F ence only, set all metal end posts, intermediate end posts, and chain link Fence posts as shown.
1.Driven Posts - Posts which are set by driving shall be free of damage when set. Remove and replace any driven posts which are split, twisted or bent, or have a badly misshapen tops.
2.Dug Holes - Where Rock is encountered, set the posts to depths of not less than 18 inches and backfill with fine Granular Material . Do not exceed the post height shown by more than 3 inches. When posts are set in dug holes, backfill in 6 inch layers with each layer separately and thoroughly tamped and compacted.
3.Concrete Footings - Dimensions of footings shall not be less than shown and shall fill the excavated areas. Place the concrete with contact against firm Soil at the sides and bottom and tamp around the posts and brace ends after the posts and braces have been brought to and firmly held in proper position. Strike off, slope or crown and smooth the surface of the concrete at the ground level to shed water. Allow to cure for at least 5 Calendar Day s before subjecting the posts and braces to strain.
b.End Posts - Set end posts: • At the beginning and end of new F ence construction that is not terminating at G ate posts. • At the end of the intersecting line of existing F ences just outside the line of the new Fence.
c.Intermediate End Posts - Set intermediate end posts in the line of the new Fence: • At each summit and at each valley in the grade of the F ence where the algebraic difference in the grades of adjoining Panels of Fence exceeds 30 percent. • At othe r points located along the new F ence line to break the Fence construction into approximately equal Runs not exceeding the applicable lengths of R uns shown. 01050.44 999 (d) Corner Posts - Set corner posts as follows:
1.Barbed and Woven Wire Fences - At angle of deflection exceeding 5 degrees for Fences with steel line posts or 15 degrees for Fences with wood line posts. Changes in line where the angle of deflection does not exceed the above limitations will be considered alignment angles. The adjacent line posts at alignment angles shall be made fast to the angle post by means of diagonal tension wires.
2.Chain Link Fences - At angle points in Fence alignment where the alignment of adjoining Panels of Fence changes direction by 20 degrees or more.
e.Gate Posts - Set Gate posts at the beginning or end of Runs of F ence to provide openings for Gates or G ateways.
f.Line Posts - Set line posts along the line of Fence, between end, intermediate end, corner, and Gate posts, and at the spacings shown. Line posts may be set at spacings not exceeding 25 percent greater than specified or at closer spacings if approved. Set a line post in the new Fence line at a point in alignment with each intersecting F ence line approximately 1 foot from the end post of the intersecting F ence line. It is intended that the actual number of line posts will average to the number required for normal spacing.
g.Braces - Construct braces before placing of F ence fabric and wires on the posts.
1.Metal Braces - Provide corner posts and intermediate end posts with two braces, one each direction from the post in the main Fence lines. Provide end posts and Gate posts wit h one brace in the line of the F ence as shown. Attach metal braces to the metal end, intermediate end, corner and Gate posts and set in concrete footings.
2.Wood Braces - Assemble and construct treated wood braces in conjunction with treated wood end posts, intermediate end posts, corner posts and G ate posts to form units as shown. Fasten the wire brace guys to posts with three staples in each post. By means of a wood lever, twist together the four strands of wire between the posts until the entire a ssembly is taut and firm. Leave the lever in place. Drive the staples to provide contact with the wires without indentation of the posts.
01050.44 Barbed and Woven Wire Fence :
a.Placing Fabric and Wire - Place fabric and wire on the face of the post which is away from the Highway or as shown. On curved alignment, place the fabric and wire on the face of the post against which the normal pull of the fabric and wi re will be exerted. Attach Fence fabric and barbed wire to each post according to recognized standard practice for Fence construction and as shown or directed.
b.Splicing Fabric and Wire - Splices of fabric and splices of separate lines of wire between posts will be allowed provided that not more than two fabric or separate wire splices, spaced at least 50 feet apart, occur in any one R un of F ence. Use wrap or telephone type splices for the longitudinal woven wire and barbed wire with each end wrapped around the other wire for not less than six complete turns. 01050.45 1000 (c) Stretching Fabric - Stretch the barbed wire and woven wire fabric. Use care in stretching woven wire fabric, so the pull is evenly distributed over the longitudinal wires and not more than one-half of the original depth of the tension curves is removed.
d.Fastening Fabric and Wire:
1.At End, Intermediate End, Corner, and Gate Posts - Terminate the Fence fabric and barbed wire at each end, intermediate end, corner, and G ate post in t he new Fence line. Wrap each line of barbed wire and each longitudinal wire of the Fence fabric around the post and then itself with at least four turns.
2.At Line Posts - Fasten woven wire fabric to the post at top and bottom and at intermediate points not exceeding 12 inches apart. Fasten each line of barbed wire to each line post. Use approved wire ties or clamps to fasten the wires to metal posts. Drive staples, for use with wood posts, crosswise with the grain of the wood and pointed slightly downward. Drive the staples just short of actual contact with the wires to permit free longitudinal movement of those wires and to prevent damage to the protective coating.
3.At Intersection of New and Existing Fence - Where existing Fences intersect the new Fence, cut the existing Fence Materials, or splice basically in kind new Materials as necessary, and fasten each longitudinal wire of the fabric and each line of barbed wire to the new end post according to 01050.44(d)(1).
e.Swinging Panels at Waterway Crossings - At waterway crossings subject to floating debris, if directed, construct wood framed swinging Panels of Fence fabric, barbed wire or combinations. Attach the Panels to the lower wires of the Fence to provide fenced closure of the waterway so there will be no unfenced side or bottom openings exceeding 6 inches when the waterway is at its lightest flow or is dry.
f.Additional Panels at Depressions - If depressions in the ground surface leave unfenced openings greater than 12 inches in height beneath the bottom line of the Fence, provide additional Panels of Fence fabric, barbed wire, or combinations between line posts, as approved, across the opening so no side or bottom openings exceeds 6 inches. If the bottom line of the Fence leaves an unfenced opening beneath it of 12 inches or less, pull the fabric and wires down between posts and anchor with pins or posts driven at least 18 inches into the ground so there will be no bottom opening at any point along the Fence greater than 6 inches in height.
g.Stay Wires and Final Adjustments - Free the fabric and barbed wire in final position from warp and sag with stay wires placed approximately vertical to the grade of the Fence. Appearance shall reflect first-class work. Retighten brace guys and leave the lever restrained against the Fence fabric or Fence wires.
01050.45 Chain Link Fence:
a.Concrete Footings - Construct concrete footings according to 01050.43(a)(3).
b.Chain Link Fence Rails and Tension Wires - Place longitudinal rails and longitudinal tension wires along the line of chain link Fence, except at Gates.
1.Rails - Attach rails to end, Gate and corner posts by clamps and sockets, and thread through loop caps on the end of line posts. Provide expansion sleeves or couplings at spacings not exceeding 200 feet in longitudinal top and bottom rails.
2.Tension Wire - Attach tension wire to end, Gate and corner posts by bands and clamps. Either thread the top tension wire through line post loop caps or hold in open slots in a manner 01050.48 to limit vertical movement. Tie or attach the bottom tension wire to the bottom of line posts by ties or clamps in a manner that prevents vertical movement. Provide tension wires with one turnbuckle or one ratchet take-up in each Run of Fence.
c.Chain Link Fence Fabric and Wire - Assemble and install chain link Fence fabric and wire according to 01050.44 and the following:
1.Splicing Fabric - Use spiral pickets of specified chain link fabric Material for fabric splices. Use wrap or telephone type splices for tension wire and barbed wire with each end wrapped around the other wire for not less than six complete turns.
2.Fastening Fabric - Fasten fabric to end, Gate and corner posts and to Gate frames as shown. Attach fabric to line posts with wire ties at top and bottom and at intermediate spacings not exceeding 18 inches. Fasten fabric to top and bottom rails and to longitudinal tension wires with metal bands or tie wires spaced as shown, but in no case greater than 24 inches apart.
3.Screening Pickets - If shown, insert the screening pickets vertically in each diamond. For bridge protective Fence only, assemble and install chain link Fence fabric and wire according to paragraphs (1), (2), and (3) of this Subsection.
01050.46 Protective Fence for Bridges - If welding of special connections for protective Fence is
required, prequalification of welders will not be required and inspection of welding will be visual.
01050.47 Fence Grounding:
a.General - Except for bridge protective Fence, provide at least one "ground" for each Run of Fence and place at any post within the Run according to 00960.45(b). Fence grounding for bridge protective Fence is not required. Fasten each line of barbed wire, alternate longitudinal wires of Fence fabric, and the rails and tension wire of chain link Fences to the ground wire by clamps. Clamp the ground wires to the grounding rods.
b.At Electrical Lines - Ground the Fence directly below the point of crossing at each location where an electric transmission, distribution or secondary line crosses over the Fence. Ground the Fence at each end or Gate post or at intervals not to exceed 500 feet when an electric transmission, distribution or secondary line Runs parallel or nearly parallel to and within 100 feet of the Fence.
01050.48 Gate Installation:
a.Metal Gates - Install metal Gates and fittings between Gate posts previously set as specified. Firmly attach the fittings to the posts and Gates. Hinge each Single Gate in a manner which will prevent removal of the Gate without tools. Set the Gate in an approximately horizontal plane to swing freely inward and outward, and so it can be fastened securely in its latch holder, or in the case of Double Gates, in its latch holder and gate stops. Set Double Gates on their respective hinge pintles to provide a common horizontal plane in which each Single Gate swings. Gates shall swing open at least of 90 degrees in each direction.
b.Gateways - Construct Gateways of the same Material as the Fence and as shown. Construct wire splices according to 01050.44(b). Provide a taut and well-aligned closure of the opening, capable of being readily opened and closed by hand. 01050.49
01050.49 Removing and Rebuilding Fence - Remove and rebuild existing Fences as shown or
directed. Construct Fences to approximately the same condition as the original Fence. Salvage the materials in existing Fences to be removed and rebuilt and incorporate in the rebuilt Fences. Replace Fence materials damaged beyond reuse at no additional cost to the Agency. Firmly reset posts to the staked alignment. Post spacing and the number of wires to be strung and stapled to the posts shall be the same as the original Fence. Furnish and use new staples or clips to fasten the wires to the posts.
01050.50 Wildlife Fence:
a.Concrete Footings - Construct concrete footings according to 01050.43(a)(3).
b.Line Posts, Braces, End Posts, Corner Posts, and Gate Post - All post and brace components shall be metal. Do not use wood posts and braces.
c.Braces - Install braces according to 01050.43(g)(1) and the following: Braces are required at Fence starts, ends, and changes of direction. A single straight Run of Fence requires an intermediate end post and brace at intervals of no more than 600 feet.
d.Wildlife Fence Fabric and Wire - Install wildlife Fence fabric and wire according to 01050.44.
e.Jumpouts - Construct jumpouts as shown or directed with Borrow Material conforming to
00330.12 that contains no particles with any dimension greater than 3 inches. Make jumpouts of
uniform grade and compact until there is no reaction or yielding under the compactor. Jumpouts will be visually accepted by the Engineer. Measurement
01050.80 Measurement - The quantities of Fences, protective Fences, Gates, and associated items
performed under this Section will be measured according to the following:
a.Barbed and Woven Wire Fence and Gateways - Barbed wire Fence, woven wire Fence, and barbed and woven wire Fence will be measured on the length basis. Measurement will be from center to center of posts, measured along the line and grade of each separate continuous Run of Fence as constructed, exclusive of Gates. Where existing Fences are extended to intersect the new Fence, the length of extension, from point of joining to the center of the new end post, will be measured and included for payment, if similar in design or type to a Pay Item, otherwise this Work will be paid for according to 00140.60.
b.Metal Gates for Barbed and Woven Wire Fence - Metal Gates for barbed and woven wire fence will be measured on a unit basis of each size of Single Gate and of each size of Double Gate, respectively. The size designation of Gates for barbed wire and woven wire Fence Gates will be by width. The width will be the width of opening the Gate is to fit.
c.Chain Link Fence - Chain link Fence will be measured on the length basis. Measurement will be from center to center of posts, measured along the line and grade of each separate continuous Run of Fence as constructed, exclusive of Gates.
d.Metal Gates for Chain Link Fence - Chain link Fence metal Gates will be measured on a unit basis of each size of single Gate and of each size of double Gate, respectively. The size designation of chain link Fence Gates will be by width and height. The width will be the width of opening the Gate is to fit. 01050.90
e.Protective Fence for Bridges - Bridge protective Fence will be measured on the length basis. Measurement will be between beginning and ending locations as shown.
f.Removing and Rebuilding Fence - Removing and rebuilding existing Fence will be measured on the length basis, including Gates. Measurement will be from center to center of posts, measured along the line and grade of Fence removed and reconstructed.
g.Wildlife Fence - Wildlife Fence will be measured on the length basis. Measurement will be from center to center of posts, measured along the line and grade of each separate continuous Run of Fence as constructed, exclusive of Gates.
h.Metal Gates for Wildlife Fence - Metal Gates for wildlife Fence will be measured on the unit basis of each size of Single Gate and each size of Double Gate respectively. The size designation of the Gates for wildlife Fence Gates will be by width. The width will be the opening the Gate is to fit.
i.Jumpouts - Jumpouts will be measured on the unit basis. Additional Fence Material used in the jumpouts will be measured as wildlife Fence. Payment
01050.90 Payment - The accepted quantities of Fences, protective Fences, Gates, and associated
items performed under this Section will be paid for according to the following:
a.Barbed and Woven Wire Fence - Barbed and woven wire Fence and Gates will be paid for at the Contract unit price, per unit of measurement, for the following items: Pay Item Unit of Measurement
a.Type ____ Fence .................................................................................. Foot
b.____ Foot Single Gates ........................................................................ Each
c.____ Foot Double Gates ....................................................................... Each In item (a) the type of Fence will be inserted in the blank. In items (b) and (c) the width of the Gate opening will be inserted in the blank.
b.Chain Link Fence - Chain link Fence and Gates will be paid for at the Contract unit price, per unit of measurement, for the following items: Pay Item Unit of Measurement
a.____ Chain Link Fence ......................................................................... Foot
b.____ Chain Link Fence with _____ ....................................................... Foot
c.____ Foot x ____ Inch Chain Link Single Gates ................................... Each
d.____ Foot x ____ Inch Chain Link Double Gates.................................. Each In item (a) the type of Fence will be inserted in the blank. In item (b) the type of Fence will be inserted in the first blank and the type of Material or pickets used for screening will be inserted in the second blank. In items (c) and (d) the width of the Gate opening will be inserted in the first blank and the height of Gate be inserted in as the second blank. 01050.90
c.Protective Fence for Bridges - Bridge protective Fence will be paid for at the Contract unit price, per foot, for the item "____ Foot Type ____ Protective Fence". The height of the Fence will be inserted in the first blank. The type of Fence will be inserted in the second blank.
d.Removing and Rebuilding Fence - Removing and rebuilding Fence will be paid for at the Contract unit price, per foot, for the item "Removing and Rebuilding Fence". New Material necessary to complete the rebuilding of Fence will be included in payment made for the removing and rebuilding Fence item.
e.Wildlife Fence - Wildlife Fence, Gates, and jumpouts will be paid for at the Contract unit price, per unit of measure, for the following items: Pay Item Unit of Measure
a.Wildlife Fence ....................................................................................... Foot
b.Jumpouts .............................................................................................. Each
c.____Foot x 96 Inch Wildlife Fence Single Gate .................................... Each
d.____Foot x 96 Inch Wildlife Fence Double Gate ................................... Each In items (c) and (d) the width of the Gate will be inserted in the blank. Payment will be payment in full for furnishing and placing all Materials, and for furnishing all Equipment, labor, and Incidentals necessary to complete the Work as specified. Payment for Materials, Equipment, and labor involved in constructing Panels of Fence additional to normal Fence construction at waterways and at ground surface depressions, according to 01050.44(e) and (f), will be paid for according to 00195.20. 01069.43
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Source: Oregon Standard Specifications for Construction, 2024 Edition. Pages 1062–1070 of 1,268. View official source ↗