AirField Systems AirDrain Golf S : simplebooklet.com

Note The information in this article has been adapted from the original work published in Crop Science titled Water Storage in Putting Greens Constructed with United States GolfAssociation and Airfield Systems Designs Mcinnes and Thomas 2011 51 1261 1267 and in HortScience titled Water Flow Though Sand based Root Zones atop Geotextiles Rose Harveyet aJ 2012 47 1543 1547 The research was coJlaboratively funded by Texas A M University Airfield Systems Oklahoma City OK and the United States GolfAssociation Airfield Systems offers an alternative to the standard USGA putting green design Their design utilizes a highly porous I inch deep plastic grid AirDrain Figure 1 in place of a 4 inch deep gravel layer As with gravel AirDrain allows rapid lateral movement of excess water to drains and thus provides for uniform horizontal moisture content within the root zone While voids in AirDrain are very effective in transmitting water they are much too large for the sand in the root zone to bridge for self support so a geotextile is used atop the grid to prevent infilling of the void space Use of geotextiles in putting green construction has been controversial due to the perceived potential for clogging of the fabric by migrating fine particles and eventual loss of permeability USGA Putting Green Natural Tuff We became interested in the hydraulic performance of the Airfield Systems design after Texas A M University constructed a soccer field with the Airfield System design in 2002 Anecdotal evidence from field managers suggested that the new field required less frequent watering than the University s football field that had been constructed following the USGA design While the two fields were constructed with different root zone mixtures and the physical environments surrounding the fields are quite different we suspected that there may have been a difference in the amount of water stored in root zones on fields constructed with the two designs i e a difference in the vertical distributions of water content in the root zones We knew from the physics of water in sand that the amount of water stored in a root zone decreases with increasing tension at the bottom of the AirField Systems Green root zone and we expected because of the geometrical and physical differences in the designs that there would be differences in water tension at the bottom of the root zones Geotextile 4 inch Gravel Layer Ail Oraill Geogrid Imperme hle liner or Geotextile PrelHued SUb Base Figure 1 The highly porous I inch deep AirDrain right offers an alternative to the 4 inch deep gravel layer in the standard USGA putting green design above left 2013 by United States Golf Association All rights reserved TERO Vol 12 4 6 10 I July August 2013 Please see Policies for the Reuse of USGA Green Section TGIF Number 224057 Publications 6

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To test for differences in tension developed at the bottom of the root zones of the two designs we constructed laboratory based test cells from 4 inch diameter PVC pipe containing profiles of the Airfield Systems and USGA greens Using tensiometers we were able to demonstrate that the tension that developed at the bottom of the root zone in the Airfield Systems design was appreciably less than that in the USGA design At that point we thought it worthwhile to investigate this finding on a slightly larger scale and a more realistic setting To this end we constructed test greens in 14 inch diameter PVC pipe Three sands and three gravels were chosen such that they covered the ranges from coarser to finer sides of the USGA recommendations for particle size distribution To create root zone mixtures the coarser two sands had peat moss added to increase water retention The finer sand was GRASS SURFACE SPECIFIED SAND ROOT ZONE MIX PREPARED SUBGRADE PER GEO TECHNICAL ENGINEERS REPORT Cross section of a putting green using the AirDrain instead of a 4 inch gravel layer in a USGA green Drawing courtesy of AirField Systems 16 r top of root zone VI While the root zone may be saturated above the drainage layer the water is under tension so the term perched water table often used to describe the state of water in the root zone immediately above the drainage layer is a bit of a misnomer A better term might be perched capillary fringe Capillary fringe is the saturated zone above a water table where water is under tension The further upward from the bottom of the root zone the greater the water tension As distance increases upward and water tension increases the root zone eventually begins to desaturate as the largest pores drain As distance increases beyond this height water content continues to decrease As a consequence the tension that develops at the bottom sets the starting tension and determines the thickness of the saturated zone and the amount of water stored in the root zone profile Figure 2 The depth and hydraulic properties of the drainage layer determine the magnitude of tension that develops at the bottom of the root zone AirDrain is l inch deep so the maximum tension that can develop at the bottom of the root zone during drainage in the Airfield Systems design would be 1 inch of water Gravel is typically 4 inches deep so the tension that could develop would be up to 4 inches of water depending on the hydraulic properties of the gravel and the depth to which sand ingresses pores of the gravel Water is slow to drain from small pores into large pores but if both systems were sealed from evaporation the tensions would eventually reach 1 and 4 inches at the bottom of the root zone in the Airfield Systems and USGA design greens respectively An occasional finger of sand penetrating the gravel in the USGA design green can lead to an appreciably quicker increase in tension at the root zone gravel interface this area represents the amount of water stored in the profile about 3 inches 12 Q

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Figure 3 Test greens constructed in 14 inch PVC pipe with either gravel or geotextile atop AirDrain as the drainage layers Both types of test greens contained a pair of porous cups connected to plastic tubing that formed manometer tensiometers to allow measurement of water pressure or tension at the root zonedrainage layer interface was under less tension than the water in test greens constructed with the USGA design by about 2 2 inches of water tension Figure 5 This lower tension was associated with an increase in water storage of about 0 5 inch in the Airfield System design greens above that in the USGA design greens Figure 5 This increase in water retention could lead to less frequent necessity to irrigate Because of reduced tension at the bottom of the root zone these results also implied that the tension at which root zone mixtures should be tested for capillary porosity when intended to be used in an Airfield System design green should be reduced to achieve similar not amended These three root zone mixtures were used in combination with the three gravels to construct test greens of the USGA design The gravel layer in all of the test greens was 4 inches deep An intermediate choke layer of coarse sand was not used The same three root zone mixtures were used in combination with four geotextiles atop AirOrain to construct test greens of the Airfield Systems design We used the Lutradur polyester geotextile prescribed by Airfield Systems at the time and chose three additional geotextiles that had the same apparent opening size 0 2 mm but differed in material and or manner of construction Manometertensiometers were used to measure pressure or tension that developed at the root zone drainage layer interface of both designs Figure 3 After the test green columns were packed with 12 inches of the root zone mixtures they were sprigged with MiniVerde bermudagrass supplied by King Ranch TurfgrassWharton Farms Wharton TX Following a period to grow in the grass a series of experiments were conducted that measured the amount of water stored in the root zone profiles and the water tension that developed at the bottom of the root zones of the different treatments after irrigation and drainage Vertically oriented time domain reflectometry TOR probes were used to measure the amount of water stored in the root zone profiles Figure 4 Periodically during the course of the study the test greens were watered until drainage was observed and then the amount of water stored in the profiles and the water tension at the bottom of the root zones were recorded for 48 hours As with our preliminary lab study we found that the water at the bottom of the root zones of test greens constructed with the Airfield design Figure 4 Test green with vertically installed 1 ft long TOR probe used to measure average water content within the root zone profile 2013 by United States Golf Association All rights reserved TERO Vol 12 4 6 10 I July August 2013 Please see Policies for the Reuse of USGA Green Section TGIF Number 224057 Publications 8

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year long laboratory experiment to investigate a range of geotextiles that were suited to supporting sand in the Airfield System design and determine whether or not they limit drainage out of the root zone In this experiment 6 inch diameter PVC columns were used to contain combinations of 12 inches of three sand mixes with 10 geotextiles held atop AirOrain Figure 6 Manometer tensiometers again were used to measure pressure or tension at the sand geotextile interfaces Mix 1 had a particle size distribution that ran down the center of the USGA specs Mix 2 was made by blending Mix 1 with a sandy clay loam 9 1 by mass and Mix 3 was made by blending Mix 1 with a sand having excess fines 1 1 by mass Mix 1 and Mix 2 met USGA recommendations Mix 3 contained twice the recommended amount of very fine sand The apparent opening sizes of the geotextiles used ranged from 0 15 to 0 43 mm After the sands were added to the columns they were regularly irrigated Periodically the rate that I inch of irrigation water drained from a column was measured and the pressure tension at the sandgeotextile interface was recorded For the first six months any particles that washed out of the sand through the geotextiles were accumulated and analyzed for total dry weight and particle size distribution At the end of the study the saturated hydraulic conductivity of the sand geotextile combinations were measured Statistical analyses showed that drainage rate saturated hydraulic conductivity and mass of eluviated particles were not dependent on the properties of the geotextiles but rather on the properties of the sands Figure 7 Most all of the particles that washed out of the columns were of clay and silt sizes This could be construed as evidence that the geotextiles were sieving out larger particles but we found that the size of particles in the drainage water was not related to the apparent opening size of 3 2 T 1 v t Vi 3 1 C1l u c S e 3 0 Airfield Systems design I 2 9 a c c 2 8 Vl 2 7 2 6 II 2 5 0 0 USGA design r 1 t 0 5 1 0 1 5 2 0 2 5 3 0 Water Tension at Bottom inches of water 3 5 Figure 5 Range in the mean amount of water stored in 12 inch root zone profiles in Airfield Systems geotextiles atop AirOrain and USGA gravels design test greens 12 hours after irrigation Means were of the three root zone mixture treatments and variations shown were from drainage type treatments i e type of geotextile or gravel Stored water in the profile was measured by TOR and water tension was measured with manometertensiometers moisture retention to greens built according to the USGA recommendations In doing so slightly coarser sand would meet specifications for capillary water retention in the Airfield design Conversely sands that push the very fine side of the current recommendations might not meet specifications for air filled porosity The question of whether or not geotextiles used in a green will clog with fines migrating out of the root zone was also studied To address this issue we conducted a Figure 6 Columns used to measure potential clogging of geotextiles by fines migrating out of the root zone 2013 by United States Golf Association All rights reserved TERO Vol 12 4 6 10 I July August 2013 Please see Policies for the Reuse of USGA Green Section TGIF Number 224057 Publications 9

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1 0 0 8 OJ c u pressure atop any of the geotextiles during drainage as would have occurred if the geotextile had been restricting drainage out of the column In conclusion the results of our studies gave no reason to prevent more widespread use of Airfield Systems design as an alternative to the USGA method for putting green construction Airfield Systems design produces additional water holding capacity above the USGA design which leads to more plant available water given the same root zone mixture and possibly less frequent requirement for irrigation Our data also support the general use of properly sized geotextiles to support sand based root zones in putting greens Geotextiles with apparent opening size of 0 2 mm worked well in our test greens and a woven geotextile with an apparent opening size twice as large 0 43 mm retained the root zone sand just as well r r 1f t 0 6 i 1f c o u 0 4 irttmt t t h rlt M Mt t _rtl u 0 2 i t 1H I1 IlJ 0 0 i 0 OO1 0 0001 0 001 0 01 0 1 Particle Diameter mm Figure 7 Size distribution of particles washed out of the three sand mixes through the geotextiles The solid line for each sand mixture represent the mean fraction of particles finer than a given diameter over 30 columns containing the mixture 10 geotextiles with 3 replicates and the dashed lines represent one standard deviation each side of the mean Summary Points Water at the bottom of the test green rootzones constructed with the Airfield design was under less tension than the water in test greens constructed with the USGA design about 2 2 inches of water tension This lower tension was associated with an increase in water storage of about 0 5 inch in the Airfield System design greens above that in the USGA design greens Geotextiles with apparent opening size of 0 2 mm worked well in test greens and a woven geotextile with an apparent opening size twice as large 0 43 mm retained the root zone sand just as well The geotextiles that were tested prevented the migration and passage of the sand rootzone mixture into the drainage layer but it appeared that the tested sands were responsible for determining the particle sizes leaving the columns The results gave no reason to prevent more widespread use of Airfield Systems design as an alternative to the USGA method for putting green construction the geotextiles which it should have been if the geotextiles were acting as sieves i e the geotextiles with the larger AOS would have let larger particles pass and vice versa but this did not happen The geotextiles obviously prevented the passage of particles as their purpose is to prevent migration of the root zone sand into the drainage layer but it appeared in our study that the sands were responsible for determining the particle sizes leaving the columns Drainage rates from the columns containing the sand without added fines increased over the year presumably because pore channels in the sand were widened when silt and clay washed out of the profile Drainage rates of the columns containing the two sands with additional fines decreased over the year but the decrease was not statistically related to the properties of the geotextiles To test if the sands themselves were clogging saturated hydraulic conductivities were measured as layers of sand were removed from columns Since saturated hydraulic conductivity would not depend on the depth of sand in a hydraulically uniform column any observed changes would be due to difference in the conductivity of the layers removed compared to those remaining We found that when surface layers were removed the saturated hydraulic conductivity increased indicating that the surface layers had lower conductivities This was not too surprising as the majority of inter particle pores of sand meeting USGA recommendation are smaller than the apparent opening sizes of the geotextiles we tested In support of our conclusion that the sands were clogging and not the geotextiles we did not notice a build up of positive DR KEVIN J MCINNES is Professor of Soil and Environmental Physics in the Department of Soil and Crop Sciences Texas A M University His research focuses on water and energy transport in soil KEISHA M ROSE HARVEY graduate student in the Department of Soil and Crop Sciences Texas A M University JAMES C THOMAS CPAg is senior research associate in the Department of Soil and Crop Sciences at Texas A M University 2013 by United States Golf Association All rights reserved TERO Vol 12 4 6 10 I July August 2013 Please see Policies for the Reuse of USGA Green Section TGIF Number 224057 Publications 10

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AirDrain What drains better than Air For Golf Greens Bunkers Tee Boxes and Fairways It was concluded through a research project conducted at Texas A M University that irrigation needs can be reduced by using AirField Systems AirDrain This five year research project was jointly funded by the United States Golf Association and AirField Systems and was a collaborative effort between Texas A M University AirField Systems and the United States Golf Association The data from the research showed that the AirField Systems drainage profile provided between 1 3 more days of plant available water than a United States Golf Association recommended gravel and sand profile Click here for more information about the study titled A Comparison of Water Drainage and Storage in Putting Greens Built Using Airfield Systems and USGA Methods of Construction Natural Turf 10 11 Root Zone USGA Spec Sand Profile AirDrain s Perched Water Table AirDrain Geocell Drainage Layer Filter Fabric AirDrain Geocell Filter Fabric Impermeable Liner optional Filter Fabric if Liner used Compacted Subgrade Per Geotechnical Engineer Benefits of an AirField System Design include 1 to 3 more days of plant available water stored in the root zone depending on climate Significantly reduces daily irrigation needs as told to us by our customers Healthier turf Stronger root system as told to us by our customers 100 Vertical Drainage under the entire playing surface AirDrain is a 100 recycled copolymer which has the impact modifier metallocene added to it for qualification as a No Break plastic making it able to withstand extreme heat and cold and still maintain performance Helps eliminate standing water Simplifies maintenance as told to us by our customers Minimal site disturbance Far less excavation and disposal Several Installation days are saved over a gravel installation Compact shipping that reduces overall storage and transportation costs This drawing specifications and the information contained herein is for general presentation purposes only All final drawings and layouts should be determined by a licensed engineer s HIC Gmax testing are measured in a lab setting and are not site specific

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Whether it s a single sports eld a sports eld complex a golf course or municipal landscaping it s time to harvest your water Water allocations are at an all time low and that trend will continue Many facilities are sacri cing landscaping to keep sports elds alive or simply not receiving enough water to do either An AirField System allows you to get more out of the water you have while it s in use and then reuse what is left over WIth a one inch void below the entire surface of a eld or green water is quickly routed to retention ponds or underground harvesting tanks for treatment and later use Taking rain water and paid for sprinkler water further by collecting it and reusing it is a great way to recycle but AirField also allows you to use your water more ef ciently That means you save and utilize water every way you can lowering the total environmental impact of your facility while saving money and avoiding continued problems due to lack of water Dramatically cut your water use The daily volume of water required for an average golf course is 400 000 gallons That s over 145 000 000 gallons of water per year With drastic reductions in water allocation today what will tomorrow bring Green building with the AirField System creates up to 4 more days of plant available water compared to a gravel drainage pro le and allows you to reclaim water for later use With AirDrain as part of your sustainable site design you will enjoy Healthier turf and stronger roots with a nearly perfect perched water table Less frequent irrigation Reduced damage and loss of play Reduced site disturbance during installation Dramatically lower carbon footprint and sustainable site impact To learn more about sustainable sports eld design contact AirField Systems today Or Contact an authorized AirField distributor Corporate Of ce 8028 N May Avenue Suite 201 Oklahoma City OK 73120 Phone 405 359 3775 Email info air eldsystems com Web www air eldsystems com AIRFIELD PROUDLY SUPPORTS THESE SUSTAINABILITY FRIENDLY ORGANIZATIONS

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4 3 2 1 D D Hydroseed or sand based thin cut sod Sod Staples Specified Sand Root Zone Mix Geotextile Filter Fabric AirDrain Geocell Geotextile Filter Fabric Overlaying Trench Varies Geotextile Filter Fabric C C Trench Liner Corrugated Drain Pipe Gravel Bedding Material 2 Minimum Surrounding Pipe B B AirDrain Natural Edge Typical Detail Permeable This drawing specifications and the information contained herein is for general presentation purposes only All final drawings and layouts should be determined by a licensed engineer s DRAWN Gary A Airfield Systems 8 4 2013 CHECKED Airfield Systems 8028 N May Ave Suite 201 Oklahoma City OK 73120 405 359 3775 TITLE QA AirDrain Natural Edge Typical Detail MFG APPROVED SIZE C SCALE 4 A 3 2 REV DWG NO The information contained in this drawing is the sole property of Airfield Systems Natural_Edge_PERM_GG_NA001 Any reproduction in part or as a whole without prior written consent is prohibited SHEET 1 OF 1 1

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General Information General Construction 100 Post Manufactured Content Injection Molded Copolymer Composition Copolymer Polypropylene Using Impact Modi er and 3 Carbon Black for UV Resistance Dimensions 31 784 x 31 880 x 1 000 7 03 sq ft Unit Weight 3 100 lbs Forms Pellets Shipping Parts Per Pallet 114 Pallet Dimensions 33 x 33 x 48 Pallet Weight 390 lbs Area Per Pallet 798 sq ft Pallets Per Trailer 114 3 wide x 2 tall x 19 deep Area Per Trailer 90 972 sq ft ASTM and ISO Properties 1 Physical Nominal Value 0 940 Impact ASTM D6254 Nominal Value Compression Strength 73 F ASTM D790 233 psi Flexural Modulus 73 F ASTM D638 100 175 psi Tensile Elongation Yield 73 F ASTM D638 16 Tensile Strength Yield 73 F ASTM D1505 2 145 psi Density Test Method 57 490 lb ft3 Mechanical ASTM D1238 Nominal Value Melt Mass Flow Rate 230 C 2 16 kg ASTM D792 20 g 10 min Speci c Gravity Test Method Test Method Notched Izod Impact 73 F 0 125 in ASTM D256 Thermal Nominal Value De ection Temperature Under Load 264 psi Unannealed Test Method 160 F ASTM D648 Expansion Contraction Index1 Temperature Humidity Length Width 100 F 98 31 881 31 817 5 F 0 31 765 31 713 Change 116 104 Joint Expansion Contraction Capacity 420 572 Safety Factor 362 550 Examples of Usage Application Safety Factor Auto 40 psi x 168 Truck 110 psi x 61 DC10 250 psi x 27 Space Shuttle 1 Required Strength 340 psi x 19 Independent laboratory testing conducted by TRI Environmental Inc TSI Testing Services Inc and Wassenaar

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100 Post Manufactured Content Recycled The AirDrain GeoGrid is made of 100 post manufactured material so you can feel good about helping the planet while adding valuable LEED Points to your project We also add an impact modifier for incredible strength and superior performance in extreme heat and cold on top of the already durable AirDrain design AirDrain Co Polymer with an Impact Modifier Performance and Temperature Durability Attached you will find the specification of the resin used to produce both the 32 x 32 and the 32 x 18 Geo cells This material is a co polymer polypropylene that is 100 recycled resin In order to be able to produce a consistent recycled resin a PIR post industrial resin is used for the base resin This is the only way to produce a consistent material as opposed to a PCR post consumer resin which is dependent on the consumer to supply a consistent material Using the PIR as a base resin 3 carbon black is added to insure good UV stabilization and metallocene an ethylene base material is used as an impact modifier Impact Modifier The impact modifier is added in an amount to achieve a 10 0 Notched Izod Impact which comfortably qualifies this material as a NO BREAK material 4 0 and greater are normally considered no break material The AirDrain resin offers an advantage over many ethylene and HDPE products since the AirDrain resin is often superior when it comes to pliability warping and internal stress related issues Referring to the attached specification sheet you will notice that all testing is done to specific ASTM Standards Resin Blends AirDrain s blend of resins gives it the ability to perform in extreme temperatures AirDrain does not need a temperature above 50 degrees Fahrenheit to be installed or warmed in the sun to be pliable on site for install In addition AirDrain s unique resin blend also helps prevent breakage and cracking in extreme temperatures Giving it the ability to withstand repeated freeze thaw cycles Airfield posts its resin content and performance values with ASTM test methods and guide lines to measure the properties of our grid

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Proper Sequencing and Orientation of AirDrain GeoCell Panels for Rapid Installation Pallet Staging AirDrain pallets cover approximately 798sqft per pallet and should be staged accordingly within the installation area to minimize the amount of time to stage the AirDrain grid AirDrain pallets are typically placed every 65 feet across and 15 20 feet back from each other Call AirField with questions that you might have about proper staging and installation All Installations must start in the Top Left Corner of the Field and work Left to Right to be installed properly 1 Orientate the AirDrain GeoCell materials with the integral indicator tab to the panel s bottom left corner painted yellow Install the AirDrain units by placing units with the connectors and platforms up to create a flat surface for the profile above If the male connectors do not fall or drop into the female connectors then the orientation is incorrect Please call AirField Systems Immediately at 405 359 3775

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2 Install the AirDrain panels across the field in a rowed pattern Staggering of rows will allow for multiple row completion by a multi manned crew 3 Once the first row has progressed across the project start with a second row Have a person staging the panels in groups of three snapped together along the row The crew can then install the left side of the panel while elevating slightly the top portion so the male and female connectors don t touch each other Once the left side has been snapped with a pull along the row direction the top portion should fall into place and with a bottom vertical pull holding the inside of parts 1 3 snap all three parts in place 4 AirDrain panels can be shaped to individual field areas as needed with appropriate cutting device If a typical field is installed correctly there should only be two sides that would need to be trimmed A If only a few parts need to be trimmed use tin snips B If many parts require trimming set up a table and use a circular saw with a no melt plastic cutting saw blade Visit AirField Systems Flickr page to watch a video of a 74 000 sq ft project for Chesapeake Energy illustrating a 3 man crew installation DISCLAIMER The preceding and following drawings and or general installation guidelines are provided only to show a concept design for installation and are not instructions for any particular installation These drawings and general instructions are not complete and are provided only to assist a licensed Geo Technical Engineer a Landscape Architect and or Civil Engineer in preparing actual construction and installation plans These drawings and instructions must be reviewed by a licensed Geo Technical Engineer a Landscape Architect and or Civil Engineer and adapted to the condition of a particular installation site and to comply with all state and local requirements for each installation site THESE DRAWINGS AND OR GENERAL INSTRUCTIONS DO NOT MODIFY OR SUPPLEMENT ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IF APPLICABLE RELATING TO THE PRODUCT 6 20 14

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AirDrain Golf Bunker Design The Greens Country Club in Oklahoma City chose AirField Systems simple Bunker Renovation that was completed with minimal install time and should drain perfectly for many years to come This golf bunker design can be installed by the existing course grounds crew at your own pace drastically reducing the overall cost of the installs making it a design that all courses can afford By raising the sand profile an inch across the entire floor bringing gravity into play in draining the bunker Effectively making the entire floor of the bunker a drain The filter fabric and grid is only on the floor of the bunker To answer the debate of clogging geotextiles filter fabrics see the Final Report form the 5 year Study at www usga org Although with the AirDrain Bunker System the entire floor of the bunker is a drain so even if a few feet of the bunker did clog over a 15 year span you would have the remaining portion to allow for optimal drainage by being able to go vertically through the profile Sand removed and base prepared for AirDrain install Bunker prepared for AirDrain Bunker System AirDrain 32 x32 pallets are easily transported to the bunker Small installation crew needed with minimum impact to the course

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Bellerive Country Club host to the 100th PGA Championship in August of 2018 installed this 7 600 sqft practice golf green on their Championship Course They were very pleased with the AirDrain System for Golf Courses and how quickly and easily it was installed After reviewing the findings of the Comparison of Putting Greens Constructed with AirField Systems and USGA Design the five year research project was jointly funded by the United States Golf Association and AirField Systems and was a collaborative effort between Texas A M AirField Systems and the United States Golf Association they decided to utilize the AirDrain System for Golf Greens for this project Click here to see An Alternative to the Gravel in USGA Putting Greens Major Championships held at Bellerive Country Club 1949 Western Amateur Championship Champion Frank Stranahan 1953 Western Open Champion Dutch Harrison 1965 U S Open Champion Gary Player 1981 U S Mid Amateur Champion Jim Holtgrieve 1992 PGA Championship Champion Nick Price 2001 World Golf Championships American Express Championship Not Contested 2004 U S Senior Open Champion Peter Jacobsen 2008 BMW Championship Champion Camilo Villegas 2013 Senior PGA Championship Photos Courtesy of John Cunningham CGCS Golf Course Superintendent and Jared Brewster 2nd Assistant Superintendent at Bellerive Country Club