Calculators · Loads

Load calculators

Snow and wind loads are combined in one workspace. Each calculation uses its own design standard model, inputs and applicability warnings.

Calculator categories

Calculator

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Input data

Roof parameters

City / localitySearch by city and federal subject. Cities with the same name are shown with their region.

Sg for listed cities in Appendix K — the exact value; for other localities, use the snow region.Use the exact Sg value from Appendix K for listed cities. For other localities, use the snow region value.Snow regionThe construction region determines the standard ground snow load.Roof typeSelect the roof shape: this sets the snow distribution pattern.Angle αdeg.The roof pitch relative to horizontal affects the snow shape coefficient.ceThe exposure coefficient accounts for wind effects; manual entry requires a justified value.ctThe thermal coefficient accounts for the special snowmelt case.Loaded aream², optionalArea is required to calculate the total force; leave this field empty to calculate pressure per unit area.Tributary widthm, optionalThe loaded width is required to calculate the total force on a linear member.

Roof shape and direction of the snow load

Result

Snow load

Load unit

Waiting for input data

Design snow load—kPa

S0 — normative: —
Sg — ground: —
μ / ce / ct: — / — / —
Design force: —

Calculation details

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Input data

Wind parameters

ModeChoose pressure or load over a defined area, depending on the task.

City / localitySearch by city and federal subject. Cities with the same name are shown with their region.

Wind regionUse the city for a preliminary wind region selection. For a specific construction site, refine the region manually using the SP zoning map 20.Use the city to preselect a wind region. Verify it manually against the SP 20 zoning map for the construction site.Terrain typeSelect the building surroundings: this affects how wind varies with height.Building heightmThe full height defines the geometry and calculation parameters.Target heightmEnter the point elevation above ground; it is used to determine the reference height ze.Width normal to windmThe width defines the loaded projection and total force.Aerodynamic coefficient cThe coefficient represents the surface shape and orientation; enter the value, selected for your model.Loaded aream²Area is required to calculate the total force on the loaded region; without it, pressure is shown.

Waiting for input data

Windward pressure and leeward suction

Result

Wind load

Load unit

Design pressure / load—kPa

Wind region: —
w₀ / k(ze) / ze: — / — / —
Mean pressure: —
Force: —

Calculation details