> For the complete documentation index, see [llms.txt](https://enercalc.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://enercalc.com/docs/sel-user-manual/calculation-modules/general/asce-7-05-snow-loads.md).

# ASCE 7-10/16 Snow Loads

How to calculate flat roof, sloped roof, and drift snow loads per ASCE 7-10 and 7-16.

This module is an implementation of the ASCE method of determining Flat Roof Snow Load, Sloped Roof Snow Load, and Snow Drifts on Lower Roofs, and Snow Drifts at Roof Obstructions. The module currently supports calculations based on ASCE 7-10 and ASCE 7-16. The Snow Loads module does ***not*** currently address the calculation of unbalanced snow loads, rain on snow surcharges, or sliding snow surcharges.

## **General**

Provides a place to enter descriptive text.

![](https://3283832020-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FiBJmBoewuy4ZcBC7RF3m%2Fuploads%2Fgit-blob-3631ccb2612e7845ddd45f145030b3c6112a9ccd%2Fclip0399_was_BMP.jpg?alt=media)

**Flat Roof Snow Loads**

Allows up to 10 different flat roof snow loads to be calculated by entering values for all of the parameters in accordance with ASCE 7.

![](https://3283832020-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FiBJmBoewuy4ZcBC7RF3m%2Fuploads%2Fgit-blob-ca6bfc2382f70347097d42b4778fd3a9513835bd%2Fclip0400_was_BMP.jpg?alt=media)

**Sloped Roof Snow Loads**

Allows up to 10 different sloped roof snow loads. The input form provides the option to refer to a previously defined Flat Roof Snow Load, or to explicitly specify a Flat Roof Snow Load value along with the remaining values for all of the parameters in accordance with ASCE 7.

![](https://3283832020-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FiBJmBoewuy4ZcBC7RF3m%2Fuploads%2Fgit-blob-0f5c4a40979d4e644b31cfa05e60b0c685d79bc2%2Fclip0401_was_BMP.jpg?alt=media)

**Snow Drifts on Lower Roofs**

Allows up to 10 different conditions to be evaluated for snow drifts on lower roofs. The input form collects values for all of the necessary parameters to determine the windward and leeward drifts and selects the controlling case in accordance with ASCE 7.

![](https://3283832020-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FiBJmBoewuy4ZcBC7RF3m%2Fuploads%2Fgit-blob-d21a166c1d21713db44012f00dd671faed63c251%2Fclip0402_was_BMP.jpg?alt=media)

**Snow Drifts at Roof Projections**

Allows up to 10 different conditions to be evaluated for snow drifts at roof projections. The input form collects values for all of the necessary parameters to determine the windward drift in accordance with ASCE 7.

![](https://3283832020-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FiBJmBoewuy4ZcBC7RF3m%2Fuploads%2Fgit-blob-0ae5bb61edbed6bdb34c732d3410a03bb14d99c3%2Fclip0408_was_BMP.jpg?alt=media)


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