Subsurface Preparation

Scope of Work to be Done
The contract work to be performed under these specifications consists of furnishing all of the required labor, materials, equipment, implements, parts and supplies necessary for asphalt surface preparation for Matéflex modules.

Insurance
The Contractor shall provide reasonable and adequate casualty insurance, including employer’s liability and public liability insurance and include the cost thereof in the contract sum.

Guarantee
The Contractor and any subcontractors hereunder guarantee their respective work against defective materials and workmanship.

Inspection and Selection
The site shall have been inspected by the owner and determined by him to be suitable for construction of the tennis court. Inspection shall include examination of the soil by a soil engineer to establish its suitability as a foundation for the court.

Clearing and Grubbing
Trees and other vegetation including their root systems to a depth of not less than twelve inches (12") shall be removed from the site and the soil treated with a sterilizer that will effectively inhibit future growth of flora.

Excavation
The site shall be excavated to a depth so as to provide finished asphalt level as required.

Fillings
Soil conditions must be stable and have suitable bearing properties, not wet or spongy. Fill material shall be placed in layers not exceeding six inches (6") each in thickness and compacted to 95 percent standard density at optimum moisture.

All drains must be interconnected and empty into drain provided by owner.

Interceptor Drainage System
A peripheral drainage system shall be installed as may be necessary so as to intercept and drain either surface or subsurface water that would otherwise drain over or under the court.

Cushion
Cushion material under paved areas shall consist of a clean 5" layer of granular A (5/8" road gravel) place-compacted to 100% Standard Proctor Density.

Base
The base course should be constructed of hot-laid bituminous asphaltic concrete installed over the sub base a depth of not less than that that is equal to four inches (4") of thoroughly compacted crushed aggregate. This material should be spread and compacted so as to produce a uniform thickness and density. Compaction should be performed with a powered steel wheel roller rated at not less than eight (8) tons or more than ten (10) tons. The surface of the base course should not vary more than one-half inch (1/2") in ten feet (10') measured in any direction.

A #4 asphalt mix or a suitable asphalt emulsion mix with a maximum aggregate size of three-eighths inch (3/8") in accordance with asphalt institute specifications should be constructed over the base course with a compacted thickness of not less than two inches (2"). The surface should be compacted with a powered steel wheel tandem roller rated at not less than two (2) tons or more than six (6) tons. After compaction, the surface should not vary more than one-eighth inch (1/8") in ten feet (10') when measured in any direction.

Slope Requirements
All excavating, filling, compacting, grading and leveling work required hereunder shall be performed so that the finished court surface slopes one inch (1") in each ten feet (10') on a true plane from side to side toward the drain. (6" drop on 60' of court width.)

Extreme care must be taken in insure a dead level finish in the asphalt with no pockets to trap and hold water.

Curb
It is advisable to install a concrete curb around the perimeter of new asphalt courts. This provides a more secure fastening for the Matéflex. The curb should be twelve inches (12") wide and approximately six inches (6") deep and located within the fencing.

Post Foundations
Post foundations shall be not less than twenty-four inches (24") in diameter at the top, not less than thirty inches (30") in diameter at the bottom, not less than thirty-six inches (36") in depth. Foundations shall be so situated as to provide a clear distance between posts of forty-two feet (42'). Concrete for foundations shall be mixed in ratios of six (6) standard 94 pound sacks of cement per cubic yard of concrete, with one (1) such sack of water, attaining a compressive strength of not less than three thousand five hundred (3,500) pounds per square inch at the twenty-eighth (28th) day after pouring. Foundations shall be so designed and poured and the posts so set as not to cause cracking or other damage to the finished surface.

Net Posts
Posts shall be set plumb and true so as to support the net at a height of forty-two and one-half inches (42-1/2") above the court surface at the net posts.

Center Strap Anchor
A center strap anchor shall be positioned and set in concrete footings measuring twelve inches by twelve inches by twelve inches (12" x 12" x 12").

Due to the modular construction of Matéflex, net posts and fencing should be absolutely square to each other in order to minimize excess trimming of the Matéflex along the fence perimeter.

Scope of Work to be Done
The contract work to be performed under these specifications consist of furnishing all of the required labor,materials, equipment, implements, parts and supplies necessary for concrete surface preparation for Matéflex modules.

Insurance
The Contractor shall provide reasonable and adequate casualty insurance, including employer’s liability and public liability insurance and include the cost thereof in the contract sum.

Guarantee
The Contractor and any subcontractors hereunder guarantee their respective work against defective materials or workmanship.

Inspection and Selection
The site shall have been inspected by the owner and determined by him to be suitable for construction of the tennis court. Inspection shall include examination of the soil by a soil engineer to establish its suitability as a foundation for the court.

Clearing and Grubbing
Trees and other vegetation including their root systems to a depth of not less than twelve inches (12") shall be removed from the site and the soil treated with a sterilizer that will effectively inhibit future growth of flora.

Excavation
The site shall be excavated to a depth so as to provide finished concrete level as required.

Fillings
Soil conditions must be stable and have suitable bearing properties, not wet or spongy. Fill material shall be placed in layers not exceeding six inches (6") each in thickness and compacted to 95 percent standard density at optimum moisture.

All drains must be interconnected and empty into drain provided by owner.

Interceptor Drainage System
A peripheral drainage system shall be installed as may be necessary so as to intercept and drain either surface or subsurface water that would otherwise drain over or under the court.

Cushion
Cushion material under paved areas shall consist of a clean 5" layer of granular A (5/8" road gravel) place compacted to 100% Standard Proctor Density.

Air Entraining Agent
An air-entraining agent shall be used to provide the concrete with entraining air of 6% for the total volume of the concrete.

Concrete
A 5" layer of 3000 psi concrete with a nominal size coarse aggregate not to exceed ¾ inch.

Reinforcing
One (1) layer of 6/6 No. 6 steel wire mesh placed on compacted granular fill and pulled into concrete as concrete is placed. Mesh to be in concrete slab.

Finishing
Surface to be Darby finished with a magnesium float and final finish with a corn broom for a semi-smooth surface.

Curing Slabs
The concrete immediately after finishing shall be kept continuously moist for seven (7) days by covering with continuously wetted burlap or building paper.

Expansion
Use ½" x 5" flexcell or fibreboard expansion joint material or saw cut with a concrete saw to a depth of 1". A combination of both methods will prove acceptable.

Fill saw cuts with elastomeric sealing compound.

All expansion joints must be in level plane with concrete surface. No protrusions or recesses are acceptable.

Slope Requirements
All excavating, filling, compacting, grading and leveling work required hereunder shall be performed so that the finished court surface slopes one inch (1") in each fifteen feet (15’) on a true plane from side to side toward the drain. (4" drop on 60' of court width.)

Extreme care must be taken to insure a dead level finish in the concrete with no pockets to trap and hold water.

Post Foundations
Post foundations shall be not less than twenty-four inches (24") in diameter at the top, not less than thirty inches (30") in diameter at the bottom, not less than thirty-six inches (36") in depth. Foundations shall be so situated as to provide a clear distance between posts of forty-two feet (42'). Concrete for foundations shall be mixed in ratios of six (6) standard 94 pound sacks of cement per cubic yard of concrete, with one (1) such sack of water, attaining a compressive strength of not less than three thousand five hundred (3,500) pounds per square inch at the twenty-eighth (28th) day after pouring. Foundations shall be so designed and poured and the posts so set as to not cause cracking or other damage to the finished surface.

Net Posts
Posts shall be set plumb and true so as to support the net at a height of forty-two and one-half inches (42-1/2") above the court surface at the net posts.

Center Strap Anchor
A center strap anchor shall be positioned and set in concrete footings measuring twelve inches by twelve inches by twelve inches (12" x 12" x 12").

Scope of Work to be Done
The contract work to be performed under these specifications consists of furnishing all of the required labor, materials, equipment, implements, parts and supplies necessary for pervious surface preparation for Matéflex modules.

Insurance
The Contractor shall provide reasonable and adequate casualty insurance, including employer’s liability and public liability insurance and include the cost thereof in the contract sum.

Guarantee
The Contractor and any subcontractors hereunder guarantee their respective work against defective materials and workmanship.

Inspection and Selection
The site shall have been inspected by the owner and determined by him to be suitable for construction of the surface. Inspection shall include examination of the soil by a soil engineer to establish its suitability as a foundation for the court.

Clearing and Grubbing
Trees and other vegetation including their root systems to a depth of not less than twelve inches (12") shall be removed from the site and the soil treated with a sterilizer that will effectively inhibit future growth of flora.

Excavation
The site shall be excavated to a depth so as to provide finished surface level as required.

Fillings
Soil conditions must be stable and have suitable bearing properties, not wet or spongy. Fill material shall be placed in layers not exceeding six inches (6") each in thickness and compacted to 95 percent standard density at optimum moisture.

All drains must be interconnected and empty into drain provided by owner.

Interceptor Drainage System
A peripheral drainage system shall be installed as may be necessary so as to intercept and drain either surface or subsurface water that would otherwise drain over or under the court.

Cushion
Cushion material under leveling course shall consist of a clean 5" layer of granular A (5/8" road gravel) place-compacted to 100% Standard Proctor Density.

A layer of stone screenings in accordance with local requirements should be constructed over the base course with a compacted thickness of not less than two inches (2"). After compaction, the surface should not vary more than one-eighth inch (1/8") in ten feet (10') when measured in any direction.

Slope Requirements
All excavating, filling, compacting, grading and leveling work required hereunder shall be performed so that the finished court surface slopes one inch (1") in each ten feet (10') on a true plane from side to side toward the drain. (6" drop on 60' of court width.)

Extreme care must be taken in insure a dead level finish in the surface with no pockets to trap and hold water.

Curb
It is advisable to install a concrete curb or substantial landscape timbers around the perimeter of the court. This provides for a place to secure the Matéflex as well as to help contain the base.

Covering the top stone layer with a geotextile fabric prior to installing Matéflex can help prevent weed growth as well as erosion of the subsurface.

The above are general recommendations regarding how to build a pervious base to install Matéflex over. Matéflex recommends using a solid base like asphalt or concrete for the best results. A pervious base will require regular maintenance for consistent game play. Matéflex recommends consulting local building requirements and standards for a base that will perform in a given climate.