STR04 L05b - Advanced Snow Loads

This is the second of two lectures on snow loads on structures. In the first lecture, titled “Basic Snow Loads,” we addressed topics including ground snow loads, determination of structure coefficients that are needed to calculate flat roof snow loads, and finally sloped-roof snow loads. In this lecture, titled “Advanced Snows Loads,” additional topics are covered, including, which unbalanced snow loads, snow drifts, sliding snow, and rain-on-snow surcharges.

0:00 – Introduction
0:25 – Review of the Basic Snow Loads
1:41 – Partial Loading
5:01 – Unbalanced Snow Loads
12:07 – Snow Drifts on Lower Roofs
17:59 – Snow Drifts due to Projections
18:41 – Snow Drifts due to Adjacent Structures
20:16 – Sliding Snow
22:00 – Rain-on-Snow Surcharge
23:01 – Ice Loads

Keywords:
ASCE 7-16: 2016 American Society of Civil Engineers Minimum Design Loads and Associated Criteria for Buildings and Other Structures
IBC 2018: International Building Code
Snow Loads, Structural Engineering, Load Determination

[AaronCheng-fr]

Thanks for the great lectures 🎉🎉 quick question: Shall we divide 15 ft for sliding snow load so have psf unit?

[paulgillespie]

Nice presentation, however in a particular design case I am concerned about impact loading due to a sizable portion of snow falling from 15 to 29 feet. Any idea how to deal with this condirion? Thanks for your input. P Gillespie PE