50 m. Marking Throws 21 Measurement 22 Continuing Competition 24 After Competition 24 Suggested Personal Equipment for Throwing Officials 24 Appendix Appendix A Implements 27 Weights and Measures 27 Appendix B Venue and Sector Layout 31 Sector Layout and Dimensions 31 Venue Layout 33 Discus 33 Hammer 34 Javelin 35 Shot 36 USATF. How to do scatter diagram - In this blog post, we will be discussing How to do scatter diagram. Diagram D. The track has been improved and is now open for use. The lines marking the limits of the exchange zone are included in these measurements. Box 495 | Topeka, KS 66615 Phone: 785-273-5329 | Fax: 785-271-0236. On-Deck Circle. 5-3-3 Track Markings ART. Appendix D, NFHS Suggested Guidelines for Management of Concussion on page 87. The track has been improved and is now open for use. Kansas State High School Activities Association 601 SW Commerce Place | P. The exchange zones at Danbury High School are 30 meters long, in accordance to the new rules adopted by the NFHS in 2019. 1 for girls with 456,697 participants in 17,028 schools. 8-3-2 thru 5: Clarifies order of finish based on torso. Points of Em-phasis 4. According to the 2021-22 NFHS High School Athletics Participation Survey, track and field is the second-most popular sport for boys with 569,262 participants in 17,070 high schools nationwide, and it is No. com EN English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian český русский български العربية Unknown. Within our 51 member state associations, we serve 19,500 high schools and more than 12 million young people. Home plate to second base —70 feet 8 1/2 inches. Pole Vault Landing Area. Watch Later. On this list, marks listed as the NFHS record with no other marks listed for that event, are the universally accepted record in the current official events. Track & Field/Cross Country; Volleyball; Water Polo; Wrestling; Other Sports; Bowling; Esports; Golf; Tennis. Points of Em-phasis 4. 2023 & 2024 Track & Field Officials Manual. same as in the past. In cross country, the order of finish is based on when the torso crosses the finish line no matter what timing system is used. Page 6, Boys Lacrosse Field Diagram: The Boys Lacrosse Field Diagram (attached) has been updated to correspond with other lacrosse rules codes. A complete listing of the track and field rules changes will be available on the NFHS website at nfhs. - Sat. White Competitors Numbers 001-100 (100 Per Set) ** For Colors Other Than White, Please Contact Customer Service at 1-800-776-3462. Diagram A. Page 7. Within our 51 member state associations, we serve 19,500 high schools and more than 12 million young people. 30M Exchange Zone Layout. Page 7. Specifically, the Table Area, Timer’s Area, Coaches Area and Team Area marking were corrected to reflect 2023 rules changes. 2ND BASE 81b' 3RD 24 81/2" PITCHERS PLATE 1ST. Rule 1-2 2019 NFHS Baseball Rules Page 8 Diagram 2 Official Measurements. (See diagram. 1 sport for girls with 605,354 and 488,267 participants, respectively. Pole Vault Landing Area. Take a walk around the track, checking for potential problems; line markings, holes, water laying on the track, etc. The NFHS is the national leader and advocate for high school athletics as well as fine and performing arts programs. UNCHANGED, TYP. org FOR MORE INFORMATION CONTACT: (Pole vault landing area diagrams courtesy of the NFHS; all other diagrams courtesy of the ASBA. To ensure that the gradient does not exceed the 1. 4-6-5g, 8-6-1e: Clarifies that a competitor should not be penalized for helping another competitor who is distressed or injured when no advantage is gained by the competitor who is assisting. ASBA Construction Guidelines January 01, 0001. Run the second measuring tape (blue line). Page 6, Boys Lacrosse Field Diagram: The Boys Lacrosse Field Diagram (attached) has been updated to correspond with other lacrosse rules codes. Track and Field & Cross Country Rules Changes. The NFHS is the national leader and advocate for high school athletics as well as fine and performing arts programs. Web track and field is a collection of sporting contests based on the athletic skills of running, jumping, and throwing. Soccer Field Layouts. With lanes designed to be 400m in length from start to finish, 400m Running Tracks are the most commonly used track size that can easily accommodate for competitive sprint lengths of 100m, 200m, and 400m. Within our 51 member state associations, we serve 19,500 high schools and more than 12 million young people. Page 3. YARO UNE 7 YDS. It is a good habit to remind the competitors what the Games Committee has authorized for marking material, the number of marks and the location of those marks. It's been a long time coming, with Formula 1 first confirming its plans for a third U. In This Issue: 1. ATHLETIC BUSINESS MARCH 2014 WWW. The NFHS is the national leader and advocate for high school athletics as well as fine and performing arts programs. If you are receiving email notifications from our office, do not ignore them. Rule Change Highlights 2. On a proper metric track, the common finish line is in the center of the 4x400 relay passing zone--which is also the passing zone for most other relays that involve 400 or longer. USA Lacrosse provides field diagrams to assist you in properly outlining your field dimensions. In Rule 5-7-4c, the previous language which required participants to remain motionless after assuming the set position prior to. Web track and field is a collection of sporting contests based on the athletic skills of running, jumping, and throwing. 2022 NFHS TRACK AND FIELD RULES INTERPRETATIONS Publisher’s Note: The National Federation of State High School Associations is the only source of official high school interpretations. Read the latest magazines about nfhs-track-and-field-pre-meet-notes_1-2021 and discover magazines on Yumpu. TRACK MARKINGS Width of all marks: 0. 4 GROUNDDRAINAGE 3. Appendix D, NFHS Suggested Guidelines for Management of Concussion on page 87. 400 Meter Event. The NFHS has worked with the American Sport Builders Association to establish a new layout that further defines the new exchange zones. HURDLE SPACING AGE/DIVISION 50 Open Women 4 33” (0. Field Guide Home Contact Us · Beacon Athletics · About Beacon . They do not set aside nor modify any rule. In This Issue: 1. For information. When feasible,Itis recommended that there be an obstacle‐free zone on the inside and on the outside of the track at least 1 meter in width. INDIANAPOLIS, Ind. Small-Sided Unified Boys & Girls Field. 2004, and NFHS in 2007, creating a sector angle that is identical everywhere. It is an area the width of one lane and 20 or 30 meters long. Existing acceleration zone markings (triangles, squares) or colored tape. The lines marking the limits of the exchange zone are included in these measurements. Remove hurdles from track as soon as the event is completed. Shot Put Pad. 5-3-3: Clarifies when each exchange zone is to be used. for laying out baseball field. Nine-player Football Field Diagram Note: By state association adoption, the dimensions of the field may be altered. 5-3-3: Clarifies when each exchange zone is to be used. The National Federation of State High School Associations states that: High school goal posts are 23'4" wide and 20' tall from ground while NCAA goal posts are 18'6" wide and 30' tall poles from ground. Track & Field Layouts. Nine-player Football Field Diagram Note: By state association adoption, the dimensions of the field may be altered. Rule 9-6-1: New rule offers guidance on the relay exchange zone for indoor track and field. Learning Center: NCAA Eligibility January 01, 0001. 05m colour symbol size (m), position stage event marking plan area white full track width finish all events a 1. The NFHS is the national leader and advocate for high school athletics as well as fine and performing arts programs. 2023 Track & Field Pre-Meet Notes. Diagram B. Rationale: Offers guidance on the relay exchange zone for indoor track and field. 2023 Track & Field Pre-Meet Notes. 3 SURFACEDRAINAGE 3. In cross country, the order of finish is based on when the torso crosses the finish line no matter what timing system is used. Currently, tracks have two large triangles marking the hand off area and a smaller one 10 meters in front. Qualifications for the State Meet & Sanctioning Regular Season Track Meets Coaches are asked to enter their complete roster using the SDHSAA entry system. Darien High School. layout and markings. Marking Throws 21 Measurement 22 Continuing Competition 24 After Competition 24 Suggested Personal Equipment for Throwing Officials 24 Appendix Appendix A Implements 27 Weights and Measures 27 Appendix B Venue and Sector Layout 31 Sector Layout and Dimensions 31 Venue Layout 33 Discus 33 Hammer 34 Javelin 35 Shot 36 USATF. Within our 51 member state associations, we serve 19,500 high schools and more than 12 million young people. An exchange zone is designated for exchanging the baton during relay races. NOTE: Due to the cancellation of spring sports last year because of the Coronavirus, the 2020 NFHS Track. Track & Field/Cross Country; Volleyball; Water Polo; Wrestling; Other Sports; Bowling; Esports; Golf; Tennis; NFHS. 4-6-5g, 8-6-1e: Clarifies that a competitor should not be penalized for helping another competitor who is distressed or injured when no advantage is gained by the competitor who is assisting. In cross country, the order of finish is based on when the torso crosses the finish line no matter what timing system is used. Page 3. Track Markings 82,932 views Jul 6, 2011 246 Dislike Share Scott Parson 167 subscribers This video will describe the basics of where 400 meter and longer races begin on a 400 meter. This does not apply to renovated tracks that keep their. This is the perfect place to come for a walk or a run, with a wide track that is well maintained. Women's Basketball Coaches Association (WBCA) September 01, 2014. Existing acceleration zone markings (triangles, squares) or colored tape placed at that location, may be used to denote the beginning of the exchange zones on a track. Http Lansw Com Au Wp Content Uploads Sites 3 2019 08 Marking A 400m Grass Track Pdf21042015 Pdf Https Www Nfhs Org Media 1019124 Field Events Diagrams Pdf Activity The Olympic Athletics Track The diagram below shows the dimension and the points for the base rectangle. com EN English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian český русский български العربية Unknown. USATF National Officials Committee Training Monograph Series. 36yd) and 300m (328. The acceleration zone is now incorporated into the exchange zone, thus creating a 30-meter exchange zone. Read the latest magazines about nfhs-track-and-field-pre-meet-notes_1-2021 and discover magazines on Yumpu. The high jump judge should be present at the competition site for the opening of practices and/or warm-ups and be available to answer any questions that may come up during this time. same as in the past. 05m colour symbol size (m), position stage event marking plan area white full track width finish all events a 1. 400 Meter Event. Hurdles 101. to host intercollegiate track and field and cross country Technical information on construction, layout and marking is contained in detail in the International Association of Athletics Federations’ (IAAF) Track and Field Facilities Manual The tolerances listed in this manual are acceptable The American Sports Builders. 5-3-3 Track Markings ART. The acceleration zone is now incorporated into the exchange zone, thus creating a 30-meter exchange zone. Cross country ranks No. The red line is the 400m start (that should be white), the thin white line is the 800m start (that should be green) and the spacing between the two lines, no matter what the length of the track, should be exactly a 2 to 1 ratio to the finish line (the thick white line. Varsity Boys Track and Field. Facility Specification Guide. Ncaa, nfhs, usa track and field, international association of athletics federations, american sports builders. 5 Jun 2011. USLacrosse/NFHS Field Diagrams By USLacrosse/NFHS on May 08, 2018 Lacrosse-girls. January, 2006. Pole Vault Landing Area. Where: Visit Jax Track at Hodges Stadium (Jacksonville) Host: University of North Florida . 145 4. The NFHS is the national leader and advocate for high school athletics as well as fine and performing arts programs. Within our 51 member state associations, we serve 19,500 high schools and more than 12 million young people. 75 meters). Home plate to backstop — 20 feet. 17 (full lane width) st 400m, 4 x 100m a st 100m, 110mh b st 200m = sl 4 x 100m 3rd athletes c curve (full track width) st 2000m, 10,000m a st 1. Each yard line is numbered. 840 m) 13. Cross Country - Track and FIeld NFHS Rule Changes - 2022. 00 m 8. ) 6. Within our 51 member state associations, we serve 19,500 high schools and more than 12 million young people. do the High School High's, meaning the Men's High Hurdles at 39". When feasible,Itis recommended that there be an obstacle‐free zone on the inside and on the outside of the track at least 1 meter in width. Place a stake or old screwdriver in the ground at Point Z (also distance A from the center of the circle). Long Jump/Triple Jump Pit Plan. 17 (full lane width). In cross country, the order of finish is based on when the torso crosses the finish line no matter what timing system is used. Do Not Ignore emails YOU RECEIVE from the IHSA Office. In case of a discrepancy in the course markings, directional flag markings take. How To Make Bell Curve in Excel? 1. The acceleration zone is now incorporated into the exchange zone, thus creating a 30-meter exchange zone. Rule 9-6-1: New rule offers guidance on the relay exchange zone for indoor track and field. Where: Visit Jax Track at Hodges Stadium (Jacksonville) Host: University of North Florida . Rationale: The NFHS Track and Field Rules Committee added this rule to clarify there is no need for prior authorization from the state association for religious headwear. Nine-player Football Field Diagram Note: By state association adoption, the dimensions of the field may be altered. (See chart below) A contestant exceeds the participation limit whenever he/ she reports to the clerk of the course, or the field event judge, in . In This Issue: 1. The acceleration zone is now. 25" R-8' 60' 60' 25' Minimum 30' Maximum x 25'-30' 5' 3' 10' 60' Fast Pitch Softball, College and High School 90° 60' 60. USATF National Officials Committee Training Monograph Series. The NFHS is concerned that unsporting behavior in education-based athletics has increased across all sports. Page 3. 000 square feet) 5. In addition to track and field, participants in volleyball, basketball, soccer, field hockey, spirit and softball will be permitted to wear religious headwear without prior. Learning Center: NCAA Eligibility January 01, 0001. Northern California / Northern Nevada Association of USA Track & Field. Track and Field is a collection of sporting contests based on the universal human athletic skills of running, jumping, and throwing. In Rule 5-7-4c, the previous language which required participants to remain motionless after assuming the set position prior to. The NFHS is the national leader and advocate for high school athletics as well as fine and performing arts programs. Board of Directors. In a change to Rule 5-Running Events, some of the specific language regarding track markings in Rule 5 was deleted and replaced with the following general statement: “Staggered markings are dependent on the geometry of each individual track. Track Markings 82,932 views Jul 6, 2011 246 Dislike Share Scott Parson 167 subscribers This video will describe the basics of where 400 meter and longer races begin on a 400 meter. (6-6-7) The NFHS is the national leader and advocate for high school athletics as well as fine and performing arts programs. ) It is highly recommended that a skinned infield be used. book is suggestive only; it is not required by NFHS rules. Track/Playing Field Configuration. 4X100M-END OF. Get the official high school soccer field dimensions on the NFHS Soccer Field Diagram page at Anthem Sports. – In an effort to more clearly define false starts in high school track and field events, two new starting violations have been adopted for the 2024 season. A track is measured in lane one, the left, inner most lane. The NFHS is the national leader and advocate for high school athletics as well as fine and performing arts programs. This fresh track layout. OR MORE 48'4" 120' 23'4' GOAL END ZONE 48'4" ENO LINE 3. 2024 Track & Field NFHS Rule Changes. It is an area the width of one lane and 20 or 30 meters long. NOTE: Due to the cancellation of spring sports last year because of the Coronavirus, the 2020 NFHS Track. I cover all the details on track markings in another article. 2024 Track & Field NFHS Rule Changes. Unified Boys' and Girls' HS Field. ) 2. Within our 51 member state associations, we serve 19,500 high schools and more than 12 million young people. 2022 NFHS TRACK AND FIELD RULES INTERPRETATIONS Publisher’s Note: The National Federation of State High School Associations is the only source of official high school interpretations. 2019 Editorial Changes. ) (Rules 4-4-3) A competitor who is bleeding, has an open wound, has any amount of blood on his/her uniform, or has blood on his/her person, may complete the running or field event trial. With recent changes to the outdoor rules, it became clearer that it was necessary to create a section specifically for. 2019 NFHS Track and Field Rules Book – Available for 2019. RULING: Correct. The construction and layout of all facilities used for high school competition are subject to any applicable laws and building codes, and to the sound judgments of the persons in charge. Rationale: The NFHS Track and Field Rules Committee added this rule to clarify there is no need for prior authorization from the state association for religious headwear. Tracks striped to the new rules will have two larger triangles (or whatever marking the school chooses) 30 meters apart. 8 meters. No matter what the task is, if it is something. UNCHANGED, TYP. As a result, the NFHS has made sportsmanship the No. Publications Catalog. Class 3 Certification is intended to be . Within our 51 member state associations, we serve 19,500 high schools and more than 12 million young people. Web track and field is a collection of sporting contests based on the athletic skills of running, jumping, and throwing. Bisects and solve for x and find the diagram is not to scale - One tool that can be used is Bisects and solve for x and find the diagram is not to scale. Ncaa, nfhs, usa track and field, international association of athletics federations, american sports builders. Get the official high school soccer field dimensions on the NFHS Soccer Field Diagram page at Anthem Sports. long, on the runway. 2012 chrysler 200 cooling system
840 m) 13. . Nfhs track markings diagram
layout and markings. Just thought I'd explain for beginners what all those lines and triangles on a track mean. On a proper metric track, the common finish line is in the center of the 4x400 relay passing zone--which is also the passing zone for most other relays that involve 400 or longer. Field Event Diagrams. Learn about the latest rules and updates for track and field events from the National Federation of State High School Associations. Soccer Field Layouts. Existing acceleration zone markings (triangles, squares) or colored tape. According to the most recent NFHS High School Athletics Participation Survey, outdoor track and field is the second-most popular sport for boys and the No. The NFHS is the national leader and advocate for high school athletics as well as fine and performing arts programs. #worldathletics #200mtrack #200mtrackrules #200mtrackmarking #200mtracklayout #200mtrackmeasurements #physicaleducation #rajeshagola Download Physical Educ. Web track and field is a collection of sporting contests based on the athletic skills of running, jumping, and throwing. ) Place an “X” at this point. 6 for boys and girls with 269,295 and 219,345 participants, respectively. VISUAL AIDS--To correspond with this article, I've made a photo layout of the. You may be risking your eligibility. The track is not metric or imperial but somewhere in between. Specifically, the Table Area, Timer’s Area, Coaches Area and Team Area marking were corrected to reflect 2023 rules changes. 7 Ago 2022. Appendix D, NFHS Suggested Guidelines for Management of Concussion on page 87. The National Federation of State High School Associations states that: High school goal posts are 23'4" wide and 20' tall from ground while NCAA goal posts are 18'6" wide and 30' tall poles from ground. The NFHS Boys Lacrosse Rules Committee has released rules changes for the 2023 season that address three major areas of the sport – field markings, equipment requirements and officiating. - Gulf Shores - Team Accomodation Options (Gulf Shores). The first marks, the ones only in one lane are the 400H marks and should be green. On a metric track, lane 1 starts all races (in that area) on the finish line. Distance from backstop to the back tip of home plate is 25′. In Rule 5-7-4c, the previous language which required participants to remain motionless after assuming the set position prior to the starting device being fired, has been replaced with the. WARNING TRACK. USATF National Officials Committee Training Monograph Series. COMMENT: Construction is defined as complete removal and replacement of an existing track oval or event area, or a new track oval built on a new location. Uniform Regula-. High school hash marks are 53'4" from the sidelines while NCAA hash marks are 60' from sidelines. The construction and layout of all facilities used for high school competition are subject to any applicable laws and building codes, and to the sound judgment of the persons in charge of the facilities. Select a league above to view its field dimensions diagram. Click now for more information. layout and markings. Track Markings Diagram. Pitching Mound Diameter 10′. 4 Jul 2018. It's been a long time coming, with Formula 1 first confirming its plans for a third U. 87in) line from inside edge of each lane. Do you want to learn about the latest track rule changes and how they affect your facility design and construction? This pdf document provides an overview of the NCAA and NFHS track and field rule updates for 2021, as well as some best practices and tips from experienced track builders and consultants. 2024 Editorial Changes. Whether you are a coach, an athlete, or an official, this document will help you prepare for the upcoming season. Set each flight of hurdles at proper height and at prescribed point in each lane, adjust weights properly. The red line is the 400m start (that should be white), the thin white line is the 800m start (that should be green) and the spacing between the two lines, no matter what the length of the track, should be exactly a 2 to 1 ratio to the finish line (the thick white line. #worldathletics #200mtrack #200mtrackrules #200mtrackmarking #200mtracklayout #200mtrackmeasurements #physicaleducation #rajeshagola Download Physical Educ. 9 – 1. The NFHS is the national leader and advocate for high school athletics as well as fine and performing arts programs. Dimensioned drawing of a regulation 400m running track with measurements for . Horizontal events include the long and triple jumps. Fast Pitch Softball, College and High School. 60 meters) x 150-180 feet long (45. Rule Change Highlights 2. Web track and field is a collection of sporting contests based on the athletic skills of running, jumping, and throwing. UNCHANGED, TYP. Watch track and field online from anywhere on any device. 2023 Track and Field and Cross Country Comments on the Rules. 0 %. 1 sport for girls with 605,354 and 488,267 participants, respectively. INFORMATION CONTACT: (Diagram courtesy of the NFHS. Within our 51 member state associations, we serve 19,500 high schools and more than 12 million young people. On-Deck Circle. This powerpoint presentation covers topics such as uniform regulations, relay exchange zones, pole vault standards, and more. The highly anticipated Las Vegas Grand Prix marks a significant moment in the Formula 1 season as the sport returns to the entertainment capital after a 40-year hiatus. The NFHS is the national leader and advocate for high school athletics as well as fine and performing arts programs. Rule 9 (NEW): Creates new indoor track and field rules section. Dimensions for sports fields and facilities. On this list, marks listed as the NFHS record with no other marks listed for that event, are the universally accepted record in the current official events. 50 m 11. Cross Country - Track and FIeld NFHS Rule Changes - 2022. 00 m. Call Toll Free: 1-866-617-6275 www. 0 %. 25" R-8' 60' 60' 25' Minimum 30' Maximum x 25'-30' 5' 3' 10' 60' Fast Pitch Softball, College and High School 90° 60' 60. 2022 NFHS TRACK AND FIELD RULES INTERPRETATIONS Publisher's Note: The National Federation of State High School Associations is the only source of official high school interpretations. 17 (full lane width) st 400m, 4 x 100m a st 100m, 110mh b st 200m = sl 4 x 100m 3rd athletes c curve (full track width) st 2000m, 10,000m a st 1. book is suggestive only; it is not required by NFHS rules. When two lines intersect, four angles are formed. layout and markings. Track & Field Scorebook. 8 meters. Track/Playing Field Configuration. If you are receiving email notifications from our office, do not ignore them. 18 PYLON TEAM' BOX 2 YDS. 000 square feet) 5. 75 meters). Rules & Regulations · WIAA Rules Publications · Rules and Regulations · NFHS Rules. While moving hurdles. Dimensions for track and field events appearing in the following diagrams. The NFHS is the national leader and advocate for high school athletics as well as fine and performing arts programs. Track & Field/Cross Country; Volleyball; Water Polo; Wrestling; Other Sports; Bowling; Esports; Golf; Tennis; NFHS. 4-6-5g, 8-6-1e: Clarifies that a competitor should not be penalized for helping another competitor who is distressed or injured when no advantage is gained by the competitor who is assisting. The acceleration zone is now incorporated into the exchange zone, thus creating a 30-meter exchange zone. Within our 51 member state associations, we serve 19,500 high schools and more than 12 million young people. 75-3m 10m-Bd to pit end x 2. Work on the task that is attractive to you. An alternate layout method can be used when less than three people or measuring tapes are available. NFHS Brochure. Rationale: Clarifies when each exchange zone is to be used based on the incoming runner. The runway should be 42 inches to 48 inches wide. Ggplot venn diagram - by CH Gao 2021 Cited by 56 - After data pre-processing, ggVennDiagram calls native ggplot2 functions to draw Venn diagrams in four layers. The acceleration zone is now incorporated into the exchange zone, thus creating a 30-meter exchange zone. Within our 51 member state associations, we serve 19,500 high schools and more than 12 million. Greet all coaches and shake hands. Football Field Diagram Eight- and Six-player Football Field. 5‐1‐5 Track Construction Art. 4-3-1, 2 For the wearing of an illegal uniform, when a violation is observedPenalty, and noted by a meet official, the competitor shall be required to9-6-1 make the uniform legal before becoming eligible for further com-Penalty petition. do 200m at 30" for the Long Hurdles. CASE BOOK CORRECTION: (Under- lining shows additions; strikethrough shows deletions. This is the perfect place to come for a walk or a run, with a wide track that is well maintained. Lets start with a list of the main dimensions: Softball Base lines are 60′. . creampie v, harley wiring harness diagram, dwsrf porn, pluse size nude models, gagging blowjobs, html2image python, bobcat lift arm bypass control valve, thrill seeking baddie takes what she wants chanel camryn, pinay sx, used mobile homes for rent by owner, brooke monk nudes twitter, building a family compound co8rr