Aqua Turf International utilizes a new and improved sprinkler system layout method that insures the best and most efficient sprinkler layout done that can be accomplished in an expeditious manner by making optimal use of the personnel and equipment already available on site . The process has been very successfully implemented on projects in the US, Bulgaria, Bahamas, China, Brazil, Egypt, Morocco, Russia and around the world.
Simply stated, the process is as follows:
- After shaping is approval and grass lines have been marked by the architect, the Contractor will coordinate the surveying of all the features necessary for the process such as the grass lines and perimeter of the greens , tees, bunkers, water features and cart paths. The dwg file is then provided to ATI either while on site or via email depending on the site schedule and services contracted.
- ATI will then re-layout the sprinkler and satellite locations in the computer and return the “As-Staked” drawing to the Contractor. The “As-Staked” drawing then becomes the foundation for the “as-built” drawing. At the same time ATI also prepares a sprinkler tracking sheet showing any add and deducts in the sprinkler quantity of each hole. This number is mostly influenced by the actual grass lines, shapes and locations of features. Some holes tend to get a little bigger and some a little smaller based on the architects important field changes to the golf course design.
- Prior to an ATI visit, the contractor will layout the “As-Staked” drawing and stake the locations of the sprinklers and satellites from our “As-Staked” drawing. Our site visits should be scheduled if possible to coincide with this process. If the project is on a fast track this method allows the Contractor to continue if needed without a site visit if time is of the essence. Once the site personnel are experienced in the process it is very easily implemented.
- During the site visit ATI will check the staking and make field adjustments as necessary. Adjustments are typically minimal leaving more time for the important tasks of inspection and plan interpretation.
- After the staking is finalized, any changes should then be re-surveyed. The stakes can remain until installation or pulled and resurveyed later if they are in the way and installation may not happen soon.
- As soon as possible after the site visit ATI will email the updated “As-Staked” drawing to include station numbering and ID’s. If a decoder system is used this allows for prompt programming of the computer which is critical. Additionally a Sprinkler Tracking Spreadsheet is supplied to account for any differences between the design and as-staked quantities.
Survey Method Staking is a more productive and efficient method when compared to the traditional tape method. Survey Method Staking allows ATI to totally redesign the system by using the computer which allows us to more efficiently layout the sprinklers than with tapes. Using the computer can allow for several variations to be tried until the best sprinkler layout is determined. This is not realistic to expect with tapes in the field. The method is especially beneficial on hard-line type systems since the triangular grid can be rotated in the computer to best align along the longest straight grass line. In this fashion fewer sprinklers are required since the most sprinklers are along the grass line requiring less backup part circle sprinklers. This would be impossible to do as efficiently with tapes in the field.
Step 1 Survey Example – Contractor provides to ATI
Step 2 As-Staked Layout – ATI provides to Contractor to layout with the same survey equipment.
Step 3 Final As-staked – ATI provides to Contractor for installation.
Step 4 Sprinkler Tracking Spreadsheet – ATI provides to Contractor after inspection.
As-Built Drawing and Programming then follow.
Survey Method Staking produces the best possible sprinkler layout because:
- The view from above the hole in AutoCAD takes the guess work out of staking.
- We can set the baseline and rotate the triangular grid as needed to fit any hard-line edges reducing the amount of backup sprinklers on a hard-line system. This results in the fewest number and most beneficial placement of sprinklers.
- Eliminates the inherent distortion and human error of dragging tapes or ropes across fairways and over mounds sometimes in high wind.
- Often the construction is incomplete when layout is needed such as drainage so portions of the hole cannot be accessed with tapes.
- Much less weather dependent.
- The contractor immediately has an accurate as-staked plan to work from and the grass lines supplied by the architect in the field are immediately archived.
- A solid foundation is laid for the construction record drawing.
- Flags that get knocked out during drainage installation or from shaping adjustments can easily be surveyed back in the original location.
- More flexible in regards to the schedule and site visits since holes can be done individually if needed. Also, if design changes are made after staking, a new layout can be done easily by repeating this process for just that hole.
- No need to stake holes far in advance of installation since the process can be done remotely if needed. However, ideally Survey Method Staking is done in conjunction with ATI site visits.
- Time during visits can be better spent on inspection and plan interpretation than pulling tapes!
Getting everyone off to a good start with and understanding of the process is helpful. For Survey Method Staking to work best it is essential that all features including greens well, bunker edges, tee tops, water features, cart paths and grass lines are surveyed new and nothing from the architects original design copied or referenced in. It is also important that the accurate inside edge of the cart path be properly identified. Sprinklers along the cart paths should always be installed last in any regard to insure they are properly aligned along the edge of the path as the final cart path edges are nearly impossible to define prior to their construction.
There may come a time when only one or two holes are ready to stake and the time and cost doesn’t justify a site visit from ATI. In this case, the same procedure will work; ATI just might not get a chance to field approve prior to installation. However, by that time in the project a good working relationship with the Irrigation Supervisor and Site Coordinator should be formed and all parties can work together to make any minor field adjustments.
The number of ATI site visits can be tailored to the needs of the project. ATI visits should include a pre-construction meeting and the final walk through. At a minimum four visits for inspection should be allotted. Of course additional trips can be made as approved. Each staking trip will include inspection of the work performed a site report and an update of the sprinkler tracking spreadsheet. Also, the contractor should provide the as-built field notes of each hole with the station numbers and pipe routings as soon as the irrigation on the hole is completed so ATI can prepare the final construction record drawing (As-Built) drawing. This allows for timely programming of the irrigation computer which can be beneficial for a speedy grow-in. This is especially important for decoder systems that are 100% reliant on the central computer to operate.
Please note that various flag colors are required to represent different irrigation components. This will prevent rouge flags being installed as sprinklers. There are many flags on a construction site and the irrigation flags should be unique, easily identifiable and a separate color used for each model and nozzle size. The grass lines should be painted in a distinctive color paint or a different color flag than used for irrigation flags.
Consider Survey Method Staking by ATI for your next project.