• Step 1: Remove the irrigation flags used in the layout of the green as you will be utilizing them again in this procedure.
• Step 2: Base installation will involve two different types of base material. The first layer of base will be between 2 and 4 inches thick and consist of 1” to fines aggregate material. The second layer should not exceed 3 inches thick and will consist of screenings or other fine material, depending on what is available in your area. The base material is measured by the cubic yard and the following calculation is utilized to determine the quantity of material.
  
  a) Area of green in square meters x depth of layer in meters (inch measurement ÷ 12) = cubic meters of material
  b) Cubic meters ÷ 27 = Cubic yards of material
  c) Round the final measurement up to calculate for any waste
  Whether the material is delivered or you pick it up have it onsite when you are ready to begin the base installation.
• Step 3: As you install the first layer of base you will incorporate the green undulations into this installation by adding thicker layers of base in certain areas to create breaks. To aid in this, install irrigation flags or stakes on each side of the green down the entire length. The flag/stake spacing should be about 3 to 5 meters apart and directly across the green from each other. You will also need a laser or site level and tripod set up at one end of the green or a 8-10 meter long 2”x4” with a level attached.
  A normal break is about a 2 to 3 inch fall between sections of the green and a more challenging break would be a 4 inch fall (example 6 inches down to 2 inches).
• Step 4: Using a shovel and rake, place base material evenly over the green area. As you install the first layer of aggregate material, build up the green higher in areas per your design by adding more material and periodically check the elevations with your level until you have achieved the desired amount of fall in each portion of the green.
• Step 5: When you have finished the first layer of base and are satisfied with the undulations you should have between 4 and 5 inches of material installed. You are now ready to compact this layer. Using the water hose and nozzle thoroughly wet the entire area but do not overly saturate it. Then begin compaction with the 2-ton double drum roller or 19” plate compactor. You should make even passes over the area and repeat 2 times to ensure sufficient compaction.
• Step 6: After compacting the first layer recheck your undulations with the level and then rough the entire area with a landscape rake.
• Step 7: Begin installing the screenings/fine material. Remember to maintain the contours you created with the first layer and evenly install the second layer at a uniform thickness. You should only need about 2 inches of material with a maximum of 3 inches.
• Step 8: Using the back of the landscape rake gently smooth the surface of the base and wet thoroughly but not overly saturated. Compact with either the 2 ton double drum roller or 19” plate compactor with even passes over the base. Compact the entire green twice

You are now ready to move on to Hole Installation.