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FAQs about SSc4.2 :

Our building is mostly residential. Must we provide showers and changing rooms for the nonresidential portion?

Does LEED have any requirements on spacing or the type of bike racks used? What about security?

Are there specific requirements for the changing rooms, such as size?

Based on my FTE calculations, I am only required to provide 1 shower to meet this requirement. Since both males and females will have access to this one shower, and it will be in a single room, does this satisfy the credit requirements? Can I use an exist

Do bike racks have to be within the LEED project boundary?

My project type serves visitors who can reasonably be expected to not be using bikes, e.g. hotel, airport, assisted living facility. Can I exclude them from bike rack requirements?

Is a general storage room that is accessible to residents acceptable for covered bike storage?

Do I round up or down? What if the calculations show that I need 0.5 showers?

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NC-2009 SSc4.2:Alternative Transportation—Bicycle Storage and Changing Rooms

Calculating Bike Storage for a Higher Education Student Dorm

Profile picture for user simonch_1
Clara Simon
Sustainability Manager
University of Washington - Capital Projects Office
LEEDuser Basic Member
2 thumbs up

Please clarify the formula for calculating bike storage for a university student dormitory. In the NC 2009 Reference Guide on the Intent page it lists Case 2: Provide covered storage for securing bicycle for 15% or more of building occupants. However, in Calculations for Step 3 it states that each group needs to be calculated for occupants (x .05), transients (x .05) and residents (x .15) and combine these 3 groups. Can you please clarify the correct calculation process? Thanks.

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David Posada
Integrated Design & LEED Specialist
SERA Architects
LEEDuser Expert
1361 thumbs up

Thu, 05/29/2014 - 22:24

Clara, You aren't the only person to be confused by this - it probably should say "provide covered storage... for 15% of the building residents [not occupants]." In a dorm, there may be university employees who work there, so 5% of any paid staff (FTE) need bike racks, but these aren’t required to be covered. The same goes for any transient visitors to the building, though that number can be hard to predict. Any reasonable estimate should be fine. The calculation steps are the more complete and correct steps to follow. This provides a higher percentage of covered bike racks for the dorm residents who live there full time, and a lower percentage of racks that don’t have to be covered for the short-term visitors to the building. Of course, in the PNW even staff and visitors will appreciate covered racks, but that’s up to your discretion.

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