Finance Committee - Agenda - 5/3/2016 - P29
Gamelhme;
PART 3 -SUB-BASE TYPES & DETAILS (Continued)
Stone Graduation U.S. Sieve Percent Passing
1" 100
3/4" 90 - 100
No. 4 35 - 60
No. 30 10- 30
No. 200 2-9
Concrete or Asphalt - Concrete should be finished with a medium broom finish. All new
concrete slabs must cure for a minimum of seven (7) days prior to installation. Asphalt cure
time requires fourteen (14) days. Once the new asphalt has cured, it must be pressure
washed prior to the surfacing being installed. The concrete contractor shall be responsible
for flooding the pad to insure proper slope and tolerance. Any areas holding enough
water to cover a flat nickel shall be patched prior to arrival of poured rubber installation crews.
Depth: 4 inch minimum thickness.
Slope: Concrete or asphalt shall maintain 4” per foot.
Tolerance: Concrete must maintain a tolerance of 1/8” in 10 ft. to avoid low areas that will
hold water under the poured rubber surfacing.
PART 4 - SITE PREPARATION AND REQUIREMENTS:
Drainage - Having proper drainage at the low end of the concrete slab is of utmost
importance. Any brick walls or curbs at the low end of the slab shall have drainage
access through weep holes. Concrete curbing weep holes should be level with finish
grade of sub-base or a minimum of 1/8" below top of concrete slab, as GT IMPAX
recycled poured rubber surfacing is porous and water drains immediately through it. Weep
holes shall be 2” high and 3" wide and shall be installed every three (3) feet. If weep
holes are smaller than the recommended size, they shall be installed every 18". Floor drains
shall be located outside the high impact areas, as the drains may not be covered with GT
IMPAX poured rubber surfacing. Recommended locations for drains are against low-end
wall or curb.
Security & Waste Disposal - Surface installation crew shall be responsible for the
protection of surface during the installation process while on site only. Owner
or general contractor shall be responsible for the protection of the surface during the curing
period upon completion of the installation and overnight during the installation. Owner
or general contractor shall be responsible for having a dumpster on site for all waste and
debris. Failure to provide security and a dumpster will result in additional cost.
Utilities & Access - Power and water must be available within 300 feet of installation. Site
will require tractor-trailer access. In a case where tractor-trailer access is not possible, owner
or general contractor shall be responsible for transporting materials from delivering carrier to
the installation site.