New CHECKWIND.API endpoints: AS/NZS 1170.2-2021 and CSA S37-18

Two new CHECKWIND.API endpoints are now live:

  1. 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.
  2. 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,
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}

 

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