Section 137-11-12 - Safety Barrier ConstructionSafety barrier construction of snowmobile race tracks of any type shall conform to one of the following options and shall be constructed in a manner described herein and Figures 1, 2, 3, 4, 5 and 6 as appropriate. Figures 1, 2, 3, 4, 5 and 6 and the specifications contained therein are incorporated herein and made a part hereof.
OPTION 1 - WOVEN WIRE or SNOW FENCE
A.1. General When this option is utilized, spectators shall be protected by using parallel fence construction to consist of two separate fences; one fence to be located against the edge of the track, to be called the trackside fence and another located at least 6 feet or more from the trackside fence, in a direction away from the race track, to be called the spectator protection fence. The area between the fences shall be kept clear. Either woven wire or snow fence shall be used, but each separate fence shall be constructed with only one type of fencing. The woven wire or snow fence shall be attached to either metal or wood posts as specified herein. Post lengths shall be as shown in Figure 3.
2. Materials All materials used in the construction of the fences specified shall conform to the following specifications:
a. Snow fence. Pickets shall be cedar, seasoned before the fence is woven, shall be straight grained and free from large knots. They shall be 4'0" high, 1-1/2" wide and 3/8" thick. The connecting wires shall be 5 double strands of 12-1/2 American gauge galvanized wire evenly spaced. The spacing between pickets shall not exceed 2 inches.b. Woven wire fence. Woven wire shall be standard galvanized farmfield fence, design number 1047-12-11. The wire shall be 47 inches high, having 10 horizontal wires of which the top and bottom wires shall be of 9 gauge and the intermediate wires of 11 gauge; and vertical stay wires of 11 gauge spaced at 12 inches.c. Metal posts. End, intermediate, and corner posts shall be 2-1/2" X 2-1/2" X 1/14" angle or 2" nominal diameter galvanized steel pipe, minimum weight of 3.65 lbs. per foot. Braces shall be 1-3/4" X 1-3/4" X 1/14" angle or 1-1/14" nominal diameter galvanized steel pipe, minimum weight of 2.27 lbs per foot. Line posts shall be standard studded "T" posts with a minimum weight of 1.33 lbs. per foot or standard lug "U" posts with minimum weight of 1.12 lbs. per foot. Posts lengths shall be as shown in Figure 3.d. Wood posts. Wood posts shall be cedar, white oak or tamarack. They shall be seasoned stock, straight and sound, and shall have been cut from live growing trees. They shall have all knots trimmed flush with the surface. Post diameters shall conform to the following: End, intermediate and corner posts shall have a minimum diameter of 4 1/2" at the small end. Braces shall have a minimum diameter of 3" at the small end. Line posts shall have a minimum diameter of 3".3. Installation a. General. The fence shall be installed as shown in Figure 3, in conformity with these specifications, except that only the front (trackside) fence shall be required to have end, corner, or intermediate posts set in Portland cement concrete. At the time of racing the top of the fence shall be at least 3'6" above the track surface.b. Posts. Holes for wood posts shall be dug to full depth as appears in Figure 3. Metal posts shall be set by means of a hand or mechanically operated post driver. An intermediate post shall be installed at least every 100 feet. Posts shall be set on 10 foot centers.c. Bracing. Bracing shall be installed at all end, corner and intermediate posts as shown in Figure 3.d. Erection of snow or woven wire fabric. Fencing shall be stretched taut. For snow fence all strands of wire shall be attached to each post. For woven wire fence the top and bottom strands of wire shall be attached to each post and the alternate interior strands of wire shall be attached to alternate posts. Splicing of the wire shall be permitted at posts only and each horizontal strand of wire shall be wrapped completely around the post. The wire strand shall be securely fastened by winding the end of the wire about the same strand where it leads up to the post. This type of fastening shall be used at each end and the corner post. Staples for wood posts shall be fully driven into corner, end or bracing posts but at line posts they shall be driven so as not to restrict the horizontal movement of the wire.e. Baled hay. The trackside fence shall be buffered by at least two parallel layers of baled hay at least 3'0" high as shown in Figure 4. The baled hay shall be laid lengthwise along and directly against the fence. The baled hay shall be tightly baled and shall be replaced when damaged or when its condition is such that in the judgment of the Commissioner it will not accomplish the purpose of buffering the trackside fence.f. Rub-rails. As an alternative to buffering by baled hay, rub-rails may be installed on the trackside fence as specified in Figure 6. Rub-rails and splice plates shall be of dry and well seasoned Number 2 common grade stock of northern white pine, Norway pine, or Number 1 construction grade of eastern spruce, eastern hemlock, or tamarack, and shall be dressed on all sides. The dressed dimensions shall be 1 5/8" X 9 1/2" and of a length indicated in Figure 6. OPTION 2 - 60 INCH CHAIN LINK FENCE
B.1. General When this option is utilized, spectators shall be protected by using a single chain link fence to be located against the edge of the track and called the trackside fence. The fence shall be attached to metal posts as specified herein and installed as specified in Figure 5.
2. Materials All materials used in the construction of the fence specified shall conform to the following specifications:
a. Chain link fabric. Chain link fabric shall be standard zinc or aluminum coated steel. It shall be 2" mesh, fabricated from number 9 gauge wire. The fence shall be 60" high.b. Posts. End or corner posts shall be 2" nominal diameter galvanized steel pipe, minimum weight of 3.65 lbs. per foot or 2-1/14"X 2" steel "H" section, minimum weight of 4.10 lbs. per foot. Line posts shall be nominal 1-1/2" diameter galvanized steel pipe, minimum weight of 2.72 lbs. per foot or 1-7/8"X 1-7/8" x 1-5/8" steel "H: section, minimum weight per linear foot = 2.70. Brace tubes shall be nominal 1-1/14" diameter galvanized sheet pipe, minimum weight of 2.27 lbs,per foot. Post lengths shall be as shown in Figure 5. Posts shall be set on 10 foot centers.c. Erection of chain link fabric. The top rail shall pass through the post caps and shall be securely fastened to end, corner and brace posts. Joints in the top rails shall be made with expansion sleeve couplings. The fabric shall be pulled taut and the ends attached to the posts with stretcher bars and bands. When required, rolls of wire fabric shall be joined by weaving a single strand of mesh wire into the ends of the rolls to form a continuous mesh.09- 137 C.M.R. ch. 11, § 12