Joske M…
Product Description
The Joske - M is a multi layer poured in place Full Pour Polyurethane and rubber running track system. Thickness of the surface can vary depending on the Owners needs and budget. A.T.G. Sports considers 13mm to be the ideal thickness. The specifications herein are based on 13mm. The impermeable running track system consists of (1) base primer, where necessary (2) 10.0mm EPDM rubber and two component polyurethane, (3) 3.0mm texturing coat for traction. The owner has the option of a “Encapsulated” or “Embedded” system texturing coating.
Actual bids will be based on owners’ specified thickness in base bid.
Materials
A) Pavement Primer - .20 kg/m2 (over concrete)
B) Industrial EPDM Rubber - 5.0 kg/m2
C) Two Component Polyurethane A&B - 8.8 kg/m2 (encapsulated) 9.0 kg/m2 (embedded).
D) Gezolan Red EPDM Rubber - 4.0 kg/m2, scattering quantity.
E) Soft Aliphatic Polyurethane - .64 LB/yd*
Amount will vary depending on Texture Coat and thickness required
Installation
A. Pavement Inspection - Check pavement for any irregularities. Area to be surfaced shall not vary from the required line, grade and cross-section set forth in the owner specifications by more than 1/8” in 10’. Any irregularities shall be corrected with polyurethane material. No fillers may be used to repair low areas. High spots shall be ground off prior to installation of shock mat material. Asphaltic pavement must have cured at least 14 days prior to surfacing installation. Concrete surfacing shall have a minimum of 30 days cure time. All areas to be surfaced must be clean from dust or other matter prior to installation.
B) Primer - Polyurethane based Primer shall be applied to the pavement at a rate of .20 kg/m2. Primer shall be formulated to insure adhesion between the paving and the new polyurethane surfacing. Polyurethane mat to be installed within 4 hours of applying primer. Normally primer is only necessary over concrete.
C) 10.0mm Two Component Polyurethane and Rubber - Two component Polyurethane consisting of polyol (Part A) and Isocyanate (Part B) shall be mixed at very precise ratios. The 10.0mm mat shall be approximately 65% two component polyurethane and 35% rubber. The 10.0mm mat shall be flow applied in two layers.
D) 3.0mm Texture Coat: 1) Embedded Texture - The embedded texture is two component Polyurethane which is flow applied over the 10.0mm mat followed by broadcasting colored EPDM rubber granules on top of the wet polyurethane. The Colored Rubber granules shall be broadcast on top of the freshly applied Polyurethane at a rate of 4.0 kg/m2. After the Polyurethane has cured, the excess rubber shall be removed. The embedded rubber which remains shall measure about 2.8 kg/m2. 2) Encapsulated Texture - Texture Coat - Using a structural spray machine, apply a mixture of Polyurethane and EPDM rubber. This mixture shall be 100 parts polyurethane to 45 parts rubber granules by weight. The two component Polyurethane shall be completely mixed and shall encapsulate the rubber. Spray apply a minimum of 2 coats.
E) Aliphatic Top Coat (Encapsulated Texture Only) - Using an airless spray machine, apply two coats of Polyurethane soft aliphatic top coating. This material shall be applied at a rate of not less than .32 lb./yd. per coat. Apply in two layers being sure to spray in opposite directions for each layer. Total application rate shall be .64 lb. per square yard.
Equipment
Below is a list of the more important equipment needed for the specialized running surface installation. The equipment listed below must be provided prior to commencement of any work.
A) Airless Sprayer designed for spraying Polyurethane
B) Continuous mixer for the accurate metering and mixing of Polyurethane. Mixer must be capable of mixing two component Polyurethane and Rubber simultaneously.
C) Texturing Machine specifically designed for applying Polyurethane and rubber texturing materials.
Warranty
All A.T.G. Sports Polyurethane Surfaces come with a standard (5) year warranty against excessive wear and defects. For more specific information, please refer to owners manual.
Line Striping
A) Calculations - All calculations must be done by a computer which has been programmed specifically for calculating tracks. Numerical values must be accurate to Ten to the Negative Seventh Power. Copies of computations must be provided to the Owner and/or his agent.
B) Lane Lines - Must be a clean two inches in width with no more than 1/8 inch tolerance in either direction.
C) Paint - Must be a Two Part Urethane, applied at a rate of no less than two gallons per lane line and .03 gallons per square foot for all other events such as Start Lines, Exchange Zones, Numbers, etc.
D) Engineers pins shall be buried 9 inches deep at both radius points. All Markings in the curves shall be laid out with a Theodolite and shall be accurate to within 20 seconds of 1 degree. A typical Transit is not considered suitable for lay out. Straights shall be laid out and marked using a steel engineers tape with proper allowances for temperature.
E) Dimensions of Markings:
Start Lines: 2” x (lane width)
Exchange Zones: 15” Triangular to point
Preps: 6” equilateral triangles
Hurdles: 2-1/2” Triangles painted directly on lane line
