Two new CHECKWIND.API endpoints are now live:
- AS/NZS 1170.2-2021: Structural design actions – Part 2: Wind actions. This does not replace the existing AS/NZS 1170.2-2011 endpoint. Both endpoints will run side-by-side for at least 1-2 years while the industry transitions to the new version and we will continue to keep both updated as necessary. The only change to the response for AS/NZS 1170.2-2021 is the introduction of the climate change multiplier Mc. A sample response is given below.
- CSA S37-18: Antennas, towers, and antenna-supporting structures.
{ "results": { "siteElevation": 11.5, "windRegion": "B1", "critical": "SOUTH WEST", "regionalWindSpeed": { "vr10": 33, "vr25": 39, "vr50": 44, "vr100": 48, "vr200": 52, "vr500": 57, "vr1000": 60, "vr2500": 64 }, "north": { "md": 0.75, "mc": 1.0, "points": [ { "z": 5.0, "terrain": { "category": 3.6, "mzcat": 0.782, "zones": [ { "extent": 400.0, "category": 4.0 }, { "extent": 600.0, "category": 3.0 } ] }, "shielding": { "ns": 1.0, "hs": 30.0, "bs": 76.24, "ms": 0.7045 }, "topography": { "critical": "NORTH NORTH EAST", "type": "FLAT", "h": 9.5, "lu": 173.04, "x": -80.04, "upwindSlope": 0.0275, "mh": 1.0, "mlee": 1.0, "mel": 1.0, "mt": 1.0, "comment": null } } ], "structures": [ { "height": 30.0, "elevation": 7.5, "footprint": [ { "lat": -27.468529, "lng": 153.025103 }, { "lat": -27.468864, "lng": 153.024655 }, { "lat": -27.468886, "lng": 153.024647 }, { "lat": -27.469183, "lng": 153.024936 }, { "lat": -27.469183, "lng": 153.024952 }, { "lat": -27.46915, "lng": 153.025011 }, { "lat": -27.469031, "lng": 153.02517 }, { "lat": -27.469033, "lng": 153.025175 }, { "lat": -27.469057, "lng": 153.025178 }, { "lat": -27.4692, "lng": 153.024982 }, { "lat": -27.469219, "lng": 153.024974 }, { "lat": -27.469433, "lng": 153.025175 }, { "lat": -27.469445, "lng": 153.025178 }, { "lat": -27.469502, "lng": 153.025234 }, { "lat": -27.469507, "lng": 153.025253 }, { "lat": -27.469393, "lng": 153.02539 }, { "lat": -27.469267, "lng": 153.025558 }, { "lat": -27.469155, "lng": 153.025693 }, { "lat": -27.469143, "lng": 153.025693 }, { "lat": -27.468529, "lng": 153.025113 }, { "lat": -27.468529, "lng": 153.025103 } ] } ] }, "northEast": { "md": 0.75, "mc": 1.0, "points": [ { "z": 5.0, "terrain": { "category": 4.0, "mzcat": 0.75, "zones": [ { "extent": 600.0, "category": 4.0 } ] }, "shielding": { "ns": 1.0, "hs": 30.0, "bs": 29.22, "ms": 0.7689 }, "topography": { "critical": "NORTH NORTH EAST", "type": "FLAT", "h": 9.5, "lu": 173.04, "x": -80.04, "upwindSlope": 0.0275, "mh": 1.0, "mlee": 1.0, "mel": 1.0, "mt": 1.0, "comment": null } } ], "structures": [ { "height": 3.0, "elevation": 9.5, "footprint": [ { "lat": -27.469302, "lng": 153.025577 }, { "lat": -27.469314, "lng": 153.02555 }, { "lat": -27.469538, "lng": 153.025274 }, { "lat": -27.4696, "lng": 153.025309 }, { "lat": -27.469595, "lng": 153.025328 }, { "lat": -27.469495, "lng": 153.025459 }, { "lat": -27.469504, "lng": 153.025478 }, { "lat": -27.469388, "lng": 153.025634 }, { "lat": -27.46935, "lng": 153.025617 }, { "lat": -27.469302, "lng": 153.025577 } ] } ] }, "east": { "md": 0.85, "mc": 1.0, "points": [ { "z": 5.0, "terrain": { "category": 3.8, "mzcat": 0.766, "zones": [ { "extent": 500.0, "category": 4.0 }, { "extent": 600.0, "category": 3.0 } ] }, "shielding": { "ns": 2.0, "hs": 12.0, "bs": 21.65, "ms": 0.8034 }, "topography": { "critical": "EAST SOUTH EAST", "type": "FLAT", "h": 15.5, "lu": 405.15, "x": -260.92, "upwindSlope": 0.0191, "mh": 1.0, "mlee": 1.0, "mel": 1.0, "mt": 1.0, "comment": null } } ], "structures": [ { "height": 15.0, "elevation": 6.0, "footprint": [ { "lat": -27.469788, "lng": 153.026181 }, { "lat": -27.469788, "lng": 153.026167 }, { "lat": -27.469838, "lng": 153.026106 }, { "lat": -27.46979, "lng": 153.026055 }, { "lat": -27.46979, "lng": 153.026044 }, { "lat": -27.470009, "lng": 153.02576 }, { "lat": -27.470021, "lng": 153.02576 }, { "lat": -27.470268, "lng": 153.026001 }, { "lat": -27.470256, "lng": 153.026028 }, { "lat": -27.469992, "lng": 153.026368 }, { "lat": -27.469976, "lng": 153.026366 }, { "lat": -27.469788, "lng": 153.026181 } ] } ] }, "southEast": { "md": 0.9, "mc": 1.0, "points": [ { "z": 5.0, "terrain": { "category": 3.6, "mzcat": 0.782, "zones": [ { "extent": 400.0, "category": 4.0 }, { "extent": 600.0, "category": 3.0 } ] }, "shielding": { "ns": 3.0, "hs": 13.0, "bs": 20.24, "ms": 0.7712 }, "topography": { "critical": "SOUTH EAST", "type": "ESCARPMENT", "h": 10.0, "lu": 70.3, "x": -400.83, "upwindSlope": 0.0711, "mh": 1.0, "mlee": 1.0, "mel": 1.0, "mt": 1.0, "comment": "Distance between site and feature crest (x) is greater than 10 × Crest Elevation (160.00 m)." } } ], "structures": [ { "height": 3.0, "elevation": 7.5, "footprint": [ { "lat": -27.470444, "lng": 153.02573 }, { "lat": -27.470442, "lng": 153.025682 }, { "lat": -27.470449, "lng": 153.025674 }, { "lat": -27.470466, "lng": 153.025674 }, { "lat": -27.470528, "lng": 153.025591 }, { "lat": -27.47053, "lng": 153.025561 }, { "lat": -27.470578, "lng": 153.025499 }, { "lat": -27.470575, "lng": 153.025481 }, { "lat": -27.470606, "lng": 153.025451 }, { "lat": -27.470618, "lng": 153.025451 }, { "lat": -27.470628, "lng": 153.025459 }, { "lat": -27.470628, "lng": 153.025473 }, { "lat": -27.470594, "lng": 153.025518 }, { "lat": -27.47064, "lng": 153.025564 }, { "lat": -27.470649, "lng": 153.025564 }, { "lat": -27.470649, "lng": 153.025577 }, { "lat": -27.470516, "lng": 153.025752 }, { "lat": -27.470504, "lng": 153.025752 }, { "lat": -27.47048, "lng": 153.025727 }, { "lat": -27.470444, "lng": 153.02573 } ] }, { "height": 3.0, "elevation": 7.0, "footprint": [ { "lat": -27.470221, "lng": 153.025674 }, { "lat": -27.470247, "lng": 153.025642 }, { "lat": -27.470256, "lng": 153.025642 }, { "lat": -27.470311, "lng": 153.025695 }, { "lat": -27.470344, "lng": 153.025655 }, { "lat": -27.470354, "lng": 153.025655 }, { "lat": -27.470373, "lng": 153.025674 }, { "lat": -27.470375, "lng": 153.025741 }, { "lat": -27.47034, "lng": 153.025744 }, { "lat": -27.470323, "lng": 153.025768 }, { "lat": -27.470309, "lng": 153.02577 }, { "lat": -27.470221, "lng": 153.025685 }, { "lat": -27.470221, "lng": 153.025674 } ] }, { "height": 3.0, "elevation": 11.0, "footprint": [ { "lat": -27.469747, "lng": 153.025188 }, { "lat": -27.469747, "lng": 153.025175 }, { "lat": -27.469792, "lng": 153.025111 }, { "lat": -27.469807, "lng": 153.025111 }, { "lat": -27.46984, "lng": 153.025143 }, { "lat": -27.469838, "lng": 153.025159 }, { "lat": -27.469795, "lng": 153.025221 }, { "lat": -27.469785, "lng": 153.025221 }, { "lat": -27.469747, "lng": 153.025188 } ] }, { "height": 3.0, "elevation": 8.5, "footprint": [ { "lat": -27.470459, "lng": 153.025508 }, { "lat": -27.470459, "lng": 153.025497 }, { "lat": -27.470497, "lng": 153.025446 }, { "lat": -27.470511, "lng": 153.025446 }, { "lat": -27.470528, "lng": 153.025465 }, { "lat": -27.470528, "lng": 153.025475 }, { "lat": -27.470487, "lng": 153.025526 }, { "lat": -27.470478, "lng": 153.025526 }, { "lat": -27.470459, "lng": 153.025508 } ] } ] }, "south": { "md": 0.95, "mc": 1.0, "points": [ { "z": 5.0, "terrain": { "category": 3.6, "mzcat": 0.782, "zones": [ { "extent": 400.0, "category": 4.0 }, { "extent": 600.0, "category": 3.0 } ] }, "shielding": { "ns": 2.0, "hs": 12.0, "bs": 30.35, "ms": 0.7747 }, "topography": { "critical": "SOUTH SOUTH EAST", "type": "RIDGE", "h": 17.0, "lu": 60.12, "x": -301.21, "upwindSlope": 0.1414, "mh": 1.0, "mlee": 1.0, "mel": 1.0, "mt": 1.0, "comment": "Distance between site and feature crest (x) is greater than 10 × Crest Elevation (225.00 m)." } } ], "structures": [ { "height": 15.0, "elevation": 9.0, "footprint": [ { "lat": -27.470178, "lng": 153.025644 }, { "lat": -27.470121, "lng": 153.025588 }, { "lat": -27.470121, "lng": 153.025575 }, { "lat": -27.470354, "lng": 153.025269 }, { "lat": -27.470368, "lng": 153.025263 }, { "lat": -27.470378, "lng": 153.025272 }, { "lat": -27.470392, "lng": 153.025253 }, { "lat": -27.470321, "lng": 153.025183 }, { "lat": -27.470321, "lng": 153.025164 }, { "lat": -27.47029, "lng": 153.025137 }, { "lat": -27.47029, "lng": 153.025127 }, { "lat": -27.470325, "lng": 153.025084 }, { "lat": -27.470414, "lng": 153.025076 }, { "lat": -27.470435, "lng": 153.025111 }, { "lat": -27.470466, "lng": 153.025129 }, { "lat": -27.470471, "lng": 153.025145 }, { "lat": -27.470494, "lng": 153.025162 }, { "lat": -27.470494, "lng": 153.025202 }, { "lat": -27.470521, "lng": 153.025215 }, { "lat": -27.470513, "lng": 153.025239 }, { "lat": -27.470528, "lng": 153.025333 }, { "lat": -27.470468, "lng": 153.025411 }, { "lat": -27.470404, "lng": 153.025419 }, { "lat": -27.470333, "lng": 153.025513 }, { "lat": -27.470335, "lng": 153.025626 }, { "lat": -27.470333, "lng": 153.025644 }, { "lat": -27.470316, "lng": 153.025666 }, { "lat": -27.470304, "lng": 153.025666 }, { "lat": -27.470247, "lng": 153.025609 }, { "lat": -27.470228, "lng": 153.025609 }, { "lat": -27.470209, "lng": 153.025636 }, { "lat": -27.470195, "lng": 153.025634 }, { "lat": -27.470178, "lng": 153.025644 } ] }, { "height": 9.0, "elevation": 10.5, "footprint": [ { "lat": -27.46979, "lng": 153.025288 }, { "lat": -27.46979, "lng": 153.025274 }, { "lat": -27.469854, "lng": 153.025186 }, { "lat": -27.469885, "lng": 153.025156 }, { "lat": -27.469923, "lng": 153.025078 }, { "lat": -27.469969, "lng": 153.025027 }, { "lat": -27.469978, "lng": 153.025027 }, { "lat": -27.470026, "lng": 153.024966 }, { "lat": -27.470035, "lng": 153.024966 }, { "lat": -27.47008, "lng": 153.025014 }, { "lat": -27.470102, "lng": 153.025003 }, { "lat": -27.470092, "lng": 153.025025 }, { "lat": -27.470171, "lng": 153.025105 }, { "lat": -27.470171, "lng": 153.025119 }, { "lat": -27.469945, "lng": 153.025424 }, { "lat": -27.469928, "lng": 153.025419 }, { "lat": -27.46983, "lng": 153.025328 }, { "lat": -27.46983, "lng": 153.025312 }, { "lat": -27.469819, "lng": 153.025298 }, { "lat": -27.46979, "lng": 153.025288 } ] }, { "height": 3.0, "elevation": 11.0, "footprint": [ { "lat": -27.470107, "lng": 153.024987 }, { "lat": -27.470285, "lng": 153.024968 }, { "lat": -27.470302, "lng": 153.024987 }, { "lat": -27.470311, "lng": 153.025057 }, { "lat": -27.470273, "lng": 153.025108 }, { "lat": -27.470264, "lng": 153.025108 }, { "lat": -27.470221, "lng": 153.025068 }, { "lat": -27.470192, "lng": 153.025076 }, { "lat": -27.470123, "lng": 153.025006 }, { "lat": -27.470107, "lng": 153.024998 }, { "lat": -27.470107, "lng": 153.024987 } ] }, { "height": 3.0, "elevation": 11.5, "footprint": [ { "lat": -27.470468, "lng": 153.025044 }, { "lat": -27.470468, "lng": 153.025033 }, { "lat": -27.470502, "lng": 153.024993 }, { "lat": -27.470513, "lng": 153.024993 }, { "lat": -27.47053, "lng": 153.025009 }, { "lat": -27.470525, "lng": 153.025027 }, { "lat": -27.470497, "lng": 153.025062 }, { "lat": -27.470485, "lng": 153.025062 }, { "lat": -27.470468, "lng": 153.025044 } ] } ] }, "southWest": { "md": 0.95, "mc": 1.0, "points": [ { "z": 5.0, "terrain": { "category": 2.4, "mzcat": 0.878, "zones": [ { "extent": 300.0, "category": 4.0 }, { "extent": 400.0, "category": 2.5 }, { "extent": 600.0, "category": 1.0 } ] }, "shielding": { "ns": 1.0, "hs": 9.0, "bs": 4.18, "ms": 1.0 }, "topography": { "critical": "SOUTH SOUTH WEST", "type": "ESCARPMENT", "h": 15.5, "lu": 34.29, "x": 339.97, "upwindSlope": 0.226, "mh": 1.0, "mlee": 1.0, "mel": 1.0, "mt": 1.0, "comment": "Distance between site and feature crest (x) is greater than 10 × Crest Elevation (155.00 m)." } } ], "structures": [ { "height": 3.0, "elevation": 12.5, "footprint": [ { "lat": -27.470128, "lng": 153.024883 }, { "lat": -27.47013, "lng": 153.024867 }, { "lat": -27.470323, "lng": 153.024612 }, { "lat": -27.470342, "lng": 153.024612 }, { "lat": -27.470387, "lng": 153.024657 }, { "lat": -27.470385, "lng": 153.024711 }, { "lat": -27.470394, "lng": 153.024722 }, { "lat": -27.47039, "lng": 153.024749 }, { "lat": -27.470397, "lng": 153.024762 }, { "lat": -27.470397, "lng": 153.024802 }, { "lat": -27.470364, "lng": 153.02485 }, { "lat": -27.470344, "lng": 153.02485 }, { "lat": -27.470278, "lng": 153.024877 }, { "lat": -27.470166, "lng": 153.024885 }, { "lat": -27.470157, "lng": 153.024896 }, { "lat": -27.47014, "lng": 153.024896 }, { "lat": -27.470128, "lng": 153.024883 } ] }, { "height": 3.0, "elevation": 13.0, "footprint": [ { "lat": -27.470442, "lng": 153.024582 }, { "lat": -27.470454, "lng": 153.024582 }, { "lat": -27.470492, "lng": 153.02462 }, { "lat": -27.470494, "lng": 153.024687 }, { "lat": -27.47054, "lng": 153.024732 }, { "lat": -27.470535, "lng": 153.024751 }, { "lat": -27.470466, "lng": 153.024837 }, { "lat": -27.470444, "lng": 153.024837 }, { "lat": -27.470433, "lng": 153.024641 }, { "lat": -27.470421, "lng": 153.024622 }, { "lat": -27.470421, "lng": 153.024609 }, { "lat": -27.470442, "lng": 153.024582 } ] }, { "height": 3.0, "elevation": 13.0, "footprint": [ { "lat": -27.470147, "lng": 153.024687 }, { "lat": -27.470147, "lng": 153.024676 }, { "lat": -27.470216, "lng": 153.024585 }, { "lat": -27.47024, "lng": 153.024598 }, { "lat": -27.470247, "lng": 153.02462 }, { "lat": -27.47018, "lng": 153.024708 }, { "lat": -27.470147, "lng": 153.024687 } ] } ] }, "west": { "md": 0.95, "mc": 1.0, "points": [ { "z": 5.0, "terrain": { "category": 3.6, "mzcat": 0.782, "zones": [ { "extent": 400.0, "category": 4.0 }, { "extent": 600.0, "category": 3.0 } ] }, "shielding": { "ns": 0.0, "hs": 0.0, "bs": 0.0, "ms": 1.0 }, "topography": { "critical": "WEST NORTH WEST", "type": "ESCARPMENT", "h": 20.0, "lu": 49.02, "x": -1039.1, "upwindSlope": 0.204, "mh": 1.0, "mlee": 1.0, "mel": 1.0, "mt": 1.0, "comment": "Distance between site and feature crest (x) is greater than 10 × Crest Elevation (195.00 m)." } } ], "structures": [] }, "northWest": { "md": 0.9, "mc": 1.0, "points": [ { "z": 5.0, "terrain": { "category": 3.2, "mzcat": 0.814, "zones": [ { "extent": 200.0, "category": 4.0 }, { "extent": 600.0, "category": 3.0 } ] }, "shielding": { "ns": 1.0, "hs": 30.0, "bs": 3.28, "ms": 0.926 }, "topography": { "critical": "WEST NORTH WEST", "type": "ESCARPMENT", "h": 20.0, "lu": 49.02, "x": -1039.1, "upwindSlope": 0.204, "mh": 1.0, "mlee": 1.0, "mel": 1.0, "mt": 1.0, "comment": "Distance between site and feature crest (x) is greater than 10 × Crest Elevation (195.00 m)." } } ], "structures": [] }, "snow": { "region": "NA", "alpine": "False" } }, "elevationData": null, "version": "2.3.0.0" }