Member $99.00 | Non-Member $129.00
INSTRUCTOR: Michael O’Rourke, Ph.D., P.E., F.SEI, M.ASCE
Course Length: 1 Hour
Sponsored by ASCE's Structural Engineering Institute and ASCE Continuing Education.
The teleconference method allows the audience to see this webinar straight from my office, without having to travel. I have attended many ASCE webinars and find that ASCE knows how to put together an effective webinar. - Anonymous Attendee
Purpose and Background
This one hour webinar presents design roof snow loads as per ASCE 7 for four increasing complex residential roofs. The first is a simple, one story hip roof. The complexity arises from the variable upwind fetch for unbalance or across-the-ridge drift loads. The second example is a one-story L-shaped roof. For this roof the complexity involves snow load for the roof valley area. The third example is a single story gable roof with dormers and an attached garage. For this third example the complexity is related to the appropriate upwind fetch for the unbalanced loads at the dormers and garage. The final example is a two story hip roof with an attached one story garage. The complexity for this final example is due to separate drift loads for the attached garage.
Primary Discussion Topics
- Sloped Roof Snow Loads
- Unbalanced-Across the Ridge-Drift Loads
- Leeward Roof Step Drift Loads
- Windward Roof Step Drift Loads
- Sliding Loads
Learning Outcomes
- Determine sliding snow loads, nominally uniform snow loads and various drift snow loads for residential roofs
- Determine snow loads for hip roofs, gable roofs and L-shaped roof
- Determine design snow loads for roof valley locations
- Determine design snow loads for dormers
Webinar Benefits
- Expand knowledge base related to roof snow loads
- Obtain design examples for training new engineering hires
- Gain greater understanding of structural design of single family and multiple unit residences
Intended Audience
- Structural Engineers with established residential design practice
- Structural Engineers wishing to establish a residential practice
- Architectural Engineers
Webinar Outline
- Introduction
- Example one: Hip roofs – unbalanced loading
- Example two: L-Shaped roof- valley loading
- Example three: Gable roof with dormers- unbalanced loading
- Example four: Two story Hip roof- roof step drifts