Happy to help ledsvik. I remember having lots of questions when I began my first design. You may be interested in some U.S. Open Course Maintenance standards (2011 at Congressional) that I stumbled across here -
https://www.golfclubatlas.com/forum/ind ... 520.0;wap2
These are eleven years old, so they may have changed.
Congressional Country Club (2011)
Course Fact Sheet
Fairways:
Width: Ranges from 18 to 35 yards, averaging 25 yards wide in the primary landing zones.
Grass Type: Predominantly Penncross creeping bentgrass along with other varieties interseeded over the years.
Mowing Height: 0.345 inch
Tees:
Grass Type: Penncross creeping bentgrass
Mowing Height: 0.345 inch
Greens:
Grass Type: Greens were rebuilt in 2009 to USGA Guidelines for Putting Green Construction and established with a blend of Penn A-1 and A-4 creeping bentgrass.
Mowing Height: 0.10 inch
Mowing Height for collars and approaches: 0.310 inch
Target Stimpmeter Reading: 14-14.5 feet
Irrigation Practices: Only hand-watering on the greens. The goal is to achieve firmness without compromising the health of the grass. Soil moisture levels are constantly monitored with hand-held testers and in-ground sensors. Fairways and tees are irrigated on an as-needed basis. Wetting agents have been applied due to sand topdressing of both fairways and tees. The goal is to achieve even wetting when irrigation is applied.
Roughs:
• Grass Type:
o intermediate rough – primarily perennial ryegrass
o primary rough – predominantly turf-type tall fescue.
• On each side of the fairway, a 6-foot wide swath of intermediate rough running the length of each hole will be mowed at 0.875 inch. The same mowing height is used for the bunker tie-ins.
• On greens with a primary rough, the mowing height is 3 inches.
For the sixth consecutive year, the USGA will use graduated primary rough. This setup creates a tougher and more challenging recovery shot for those who hit their drives farther off-line.
• The first cut of primary rough is 6 yards wide and mowed between 2.75-3.25 inches, depending on the length of the hole.
• The second cut of rough is mowed to 4 inches, depending on the turf growth rate. This height extends to and beyond the gallery rope lines.
Bunkers:
Maintenance: New sand has been added to all bunkers. All bunkers are hand-raked.
Maintenance Crew:
Congressional C.C. crew size: 55
Number of mechanics on staff during the Open: 3
Number of volunteers: 120. Most are experienced golf course superintendents and assistant superintendents who volunteer their time for the week.
Where the volunteers are housed: Nearby in housing at American University.
How the maintenance crew and volunteers are fed: Breakfast, lunch and dinner are prepared by the Congressional C.C. chef for the entire maintenance staff and volunteers.
Typical hours worked during the championship: Morning shift 4 a.m. to 8 a.m. Afternoon shift 4:30 p.m. to 9:30 p.m. Staff is on property throughout the day in case of rain.
Miscellaneous Maintenance Points:
Amount of extra equipment on hand: Six walking greens mowers, four walking collar mowers, eight turf rollers, four walking tee mowers, 19 five-plex fairway mowers, three rotary rough units with 9-foot cutting width, two rotary rough units with 6-foot cutting width, one reel rough unit with 6-foot cutting width, two mechanical bunker rakes, 22 maintenance carts and 36 squeegees.
Typical mowing schedule during the championship: All principal in-play areas will be mowed every day. Greens, tees and fairways are mowed twice a day.
Soil moisture: Monitored by in-ground soil sensors and hand-held soil moisture meters. The greens are also equipped with an underground water evacuation system.
Soil Firmness: The firmness of the greens will be measured each day (morning and evening) using the USGA TruFirm system to monitor soil firmness. A relative range has been determined for each green to gauge the receptiveness of the green in holding an approach shot.