Specifier Note: the following CSI section describes the athletic wood flooring system to be installed on the specific project. The number and title of the section may be changed if the specifier deems necessary; but in any circumstance it will belong to the general Section 09640: Wood Flooring.
SECTION 09644
Wood Athletic Flooring
PART 1: GENERAL
1.0 SUMMARY
1.0.1 Work Included
A. Athletic wood flooring system.
B. Accessories required for installation.
1.0.2 Related Sections
Specifier Note: the following CSI sections of the project manual are a guide to what is the essential information needed to determine the acceptability of the site conditions, and details of the installation of MONDO products. The Specifier may choose to include other sections he/she deems necessary.
A. Section 03050: Basic Concrete Materials and Methods.
B. Section 06050: Basic Wood and Plastic Materials and Methods.
C. Section 07050: Basic Thermal and Moisture Protection Materials and Methods.
D. Section 07100: Dampproofing and Waterproofing.
E. Section 11480: Athletic, Recreational, and Therapeutic Equipment.
1.1 REFERENCES
1.1.1 Maple Flooring Manufacturers Association (MFMA).
1.1.2 APA- The Engineered Wood Association [former American Plywood Association (APA)].
1.1.3 Canadian Lumberman’s Association (CLA).
1.1.4 Deutches Institut fur Normung (DIN).
A. DIN Standards 18032, Part 2.
1.2 SYSTEM DESCRIPTION
A. Provide an athletic wood flooring system consisting, in general, of wood laminate subflooring, maple flooring, vapor retarder, finishes, painted game lines, and wall base.
B. Provide an athletic wood flooring system, which has been manufactured to maintain performance criteria, stated by manufacturer without defects, damage or failure.
1.3 SUBMITTALS
Specifier Note: the following are typical submittals. The specifier should change, add or omit what ever he/she deems necessary.
A. Product data, including manufacturer’s information for specified products
B. Selection and verification samples for finishes, colours and textures.
C. Shop drawings showing layout, profiles, product components and finishing details.
D. Installation and maintenance instructions as published by the manufacturer.
1.4 QUALITY ASSURANCE
A. The manufacturer must have experience in the manufacturing of athletic wood-flooring systems.
B. Installer must have performed installations of the same scale in the last three years.
C. Installer to be recognised and approved by the flooring manufacturer.
1.5 DELIVERY, STORAGE, AND HANDLING
A. Materials must be delivered in manufacturer’s original, unopened and undamaged containers with identification labels intact.
B. Store material protected from exposure to harmful weather conditions, on a clean, dry, flat surface protected from all possible damage.
C. Recommended environmental conditions for storage are a relative temperature in the range of 65o F to 75o F (18o C to 24o C), and ambient humidity in the range of 35% to 50%.
D. Material shall be stored in the area where the installation is to take place, a week (7 days) prior to installation, so that it can acclimate to area conditions.
E. Material should not suffer excessive damage during handling (i.e. edge chipping, excessive warping etc).
1.6 SITE CONDITIONS
A. Maintain stable room and subfloor environmental conditions for a period of seven (7) days prior, during and seven (7) days after installation.
-Recommended temperature range: 65o F to 75o F (18o C to 24o C).
-Recommended relative humidity range: 35% to 50%.
B. Installation to be carried-out no sooner than the specified curing time of concrete subfloor (normal density concrete curing time is approximately 28 days for development of design strength).
C. Moisture vapor emission content of the concrete slab must not exceed 7 lbs/1000 ft2 per 24 hrs when using the Calcium Chloride test as per ASTM F 1869-98.
D. Installation of athletic wood flooring will not commence unless all other finishes in the building have been completed and the HVAC systems are operational and able to sustain stable environmental conditions (as specified).
1.7 WARRANTY
A. Provide manufacturer’s standard warranty.
B. The athletic wood flooring is warranted to be free from manufacturing defects for a period of one (1) year from the date of shipment from the manufacturer.
1.8 MAINTENANCE AND REPAIR
A. Provide additional amount of approximately 2% of the total floor surface, of each type.
B. Repair material must be from the same lot as material supplied for initial installation.
C. Maintain surface as per MFMA published recommendations for wood floor maintenance.
PART 2: PRODUCT
2.1 MANUFACTURERS
A. MONDO AMERICA INC., 2655 Francis Hughes, Laval, QC, Canada.
Toll-Free: 1-800-361-3747
1-800-663-8138
2.1.2 DIVISIONS
A. MONDO USA (Southeast Division), 1140 Hammond Drive N.E., Suite B2190, Atlanta, GA
Toll-Free: 1-800-441-6645
B. MONDO USA (Southwest Division), 1705 West NW Hwy., Suite 255, Grapevine, TX
Toll-Free: 1-888-966-6369
C. MONDO USA, (West Division), 4208-198th Street S.W., Suite 105, Lynnwood, WA
Toll-Free: 1-800-962-5334
D. MONDO USA, (Northeast Division), 1100 East Hector Street, Suite 160, Conshohocken, PA
Toll-Free: 1-888-553-0002
2.2 AIR ZONE MAPLE SYSTEM
2.2.1 Description
A. Prefabricated athletic wood floor system as manufactured by MONDO AMERICA INC., or approved equal.
B. Mondo Air-Zone Pads, to be air injected.
Specifier Note: specify wood finish type, grade and size.
C. Flooring [Second & Better] continuous tongue & groove, end-matched MFMA Northern Hard Maple, graded marked and stamped by manufacturer.
-Optional: [First, Third and Better, Third grade].
-Sizes: [25/32’’ x 2 _’’, 1 _’’ (20 mm x 57 mm, 38 mm) and 33/32’’ x 2 _’’, 1 _’’, and 3’’ (26 mm x 57 mm, 38 mm, 76 mm)].
2.2.2 Physical Properties
A. Physical properties of the prefabricated athletic wood floor, to conform to the following requirements:
|
Properties |
DIN 18032, Part 2 |
Aerobics Pad |
Basketball Pad |
|
Shock Absorption |
High |
64.59 |
55.51 |
|
Friction |
0.4 £ CF £ 0.8 |
0.43 |
0.43 |
|
Maximum Deformation at 0.5 mm |
£ 1 mm (0.04’’) |
0.7 mm (0.03’’) |
0.58 mm (0.02’’) |
|
Standard Vertical Deformation |
£ 5 mm (0.2’’) |
3.8 mm (0.15’’) |
2.22 mm (0.09’’) |
|
Vertical Bounce (%) |
&Mac179; 90 % |
92.18 % |
96.08 % |
|
Impact Resistance (8 Nm) |
Indentation £ 0.5 mm |
< 0.5 mm |
< 0.5 mm |
|
Rolling Load Resistance (1.5 kN) |
Indentation £ 0.5 mm |
< 0.5 mm |
< 0.5 mm |
|
Residual Indentation |
£ 0.5 mm (0.02’’) |
< 0.5 mm |
< 0.5 mm |
2.3 MATERIAL
Specifier Note: specify plywood type, grade and size.
A. Provide athletic wood flooring system (as specified in subsection 2.2.1).
B. Provide Vapor Barrier to be 6 mils polyethylene.
C. Provide panels:
[15/32’’ x 4’ x 8’ (12 mm x 10.2 cm x 20.3 cm) APA-rated sheathing grade plywood,
exposure 1, or
7/16’’ x 4’ x 8’ (4.4 mm x 10.2 cm x 20.3 cm) Oriented Strand Board (O.S.B.)].
D. Provide Mondo Air Zone, 1 3/16’’ (30 mm) thick, conical pads selected as per the intended purpose.
E. Provide Wall Base, 3’’ x 4’’ (76 mm x 102 mm) vented vinyl cove with pre-molded outside corners. Supplied by Mondo in black and brown.
F. Provide flooring fasteners to be 2’’ (51 mm) barbed cleat or 15 gauge coated staples.
Specifier Note: accessories should be changed in accordance with the project specifications.
G. Provide Finishing material to be specified by Architect and applied according to manufacturer’s specifications.
PART 3: EXECUTION
3.1 INSTALLERS
A. Refer to section 1.4 of this document for information on installers.
3.2 EXAMINATION AND PREPARATION
The following must be ensured prior to installation of the primary product:
A. Concrete subfloor to be placed a minimum of thirty (30) days prior to the installation of floor system.
B. Inspect slab for proper tolerance, and perform the poly-film test for dryness.
C. Water vapor membrane complies with specification in ASTM E 1745-97.
D. Alkalinity test and moisture test must be preformed. PH level should be in the range of 7 to 8.5. Moisture content must not exceed 7 lbs/1000 ft2 per 24 hrs (verify using the calcium chloride test as per ASTM F 1869-98).
E. Smooth, dense finish, highly compacted with a tolerance of 1/8’’ in a 10 ft radius (3.2 mm in 3.05 m radius).
F. Concrete slab depression is 2 7/8’’ (7.3 cm).
G. Concrete subfloors on- or below-grade are installed over a suitable moister retardant membrane.
Specifier Note: the following are considered common practice subfloor examination and preparation, to receive floor-finishing products, and as such should not be omitted or altered in any case.
H. Subfloor must be clean, free of paint, thick dust, sealer, hardeners, grease, oil, solvents, old adhesive and any other foreign substances.
I. Sealing of cracks, holes and, smoothing and leveling of rough, uneven surfaces, must be carried out using a good quality Portland cement based leveling compound (feathering compound), approved by the manufacturer.
J. The beginning of installation stipulates the acceptance of surface and site conditions.
K. Installation will not be carried out unless above conditions are satisfied.
L. Report any discrepancies to the General Contractor for correction.
3.3 INSTALLATION
3.3.1 Floor System
A. Cover concrete with 6 mil polyethylene, sealing and lapping joints a minimum of 6’’ (152 mm).
B. Attach 32-Mondo Air Zone Pads per sheet of plywood (4’ x 8’), on first layer of sheathing at 12’’ (305 mm) o.c. in each direction.
C. Install first layer (with Air Zone Pads) of 15/32’’ sheathing grade plywood or 7/16’’ O.S.B., with a 1/4’’ (6.4 mm) spacing between adjoining sheets and 1 1/2’’ to 2’’ (38 mm to 51 mm) expansion void along perimeter and all vertical obstructions.
D. Installation of the first layer of sheathing shall be across the short dimension of the room, wile the second layer shall be laid at a 45o angle to the long dimension, so that the two layers cross at a 45o angle with each other.
E. Install perimeter rows of cushions with no more than 6’’ (152 mm) from edge of sheet to centre of cushion.
F. Use a minimum of 12’’ (305 mm) staples to fasten the second layer of sheathing to the first.
Specifier Note: the following is considered common practice wood-floor installation procedure. Consult MFMA literature/publications for special projects. Alter following procedure as required by project description (if necessary).
G. Install maple flooring, over sheathing, by power nailing, or stapling, approximately 12’’ (305 mm) o.c. with end joints properly driven up. Install flooring parallel to main playing court.
H. If required, size joints between flooring strips to allow for intermediate expansion in accordance with local humidity conditions.
I. Provide 1 _’’ to 2’’ (38 mm to 51 mm) expansion voids at perimeter and at all vertical obstructions.
3.3.2 Sanding
Specifier Note: refer to MFMA sanding guide for details on sanding procedures. Add/change as necessary.
A. Machine drum sand with course, medium, and fine sand paper to achieve a smooth, even and uniform surface.
B. Remove sanding dust from entire surface by vacuum and tack.
C. Refer to MFMA sanding guide for procedures.
3.3.3 Finishing
Specifier Note: refer to MFMA finishing guide for details on finishing procedures. Add/change as necessary.
A. Inspect entire area of the floor to insure that the surface is acceptable for finishing, and is clean and completely free from sanding dust.
B. Apply two (2) coats of approved oil modified polyurethane seal and two (2) coats of approved oil modified polyurethane finish per manufacturer’s instructions.
C. Buff and clean floor between each coat.
D. Apply game lines accurately in accordance with drawings and layouts provided by Architect. Lines shall be straight with sharp edges. Apply between seal and first coat of finish.
E. Refer to MFMA finishing guide for procedures.
F. Allow for sufficient time (as specified by MFMA) prior to cleaning surface.
3.3.4 Cove Base
A. Affix rubber vent cove base to walls with recommended adhesive.
B. Use pre-molded outside corners and field mintered inside corners.