into design, in their circulation areas, they might go concrete or terrazzo,
and out in the open office area most of them would go with carpet tile.
We also did wood, and we did porcelain in Salesforce, so that was
unique to that building.
i+s: What are some of the benefits of specifying raised access floors
for a project of this scope?
MJ: Number one is flexibility – the ability to bring power, data or HVAC
anywhere you want it at the floor level and to be able to reconfigure
that as your space changes. […] Putting it all on top of the slab under
a raised floor, I can put it anywhere; I can reconfigure it, and I can use
modular, prefabricated power systems that are all made in the factory.
I just lay them on the slab and add to it or reconfigure it as needed. It’s
not conduit, it’s not cell deck in the slab, it’s not overhead in a ceiling
plenum; it’s all plug-and-play under my feet.
Another benefit of putting the air under the floor instead of ducted
overhead allows you to save energy, because under the floor you provide
a higher temperature air than overhead. Overhead, they typically are
making 55-degree air and they’re putting a lot of horsepower and fan
energy behind it to blow it through the ducts and down from the ceiling.
And the 55-degree air mixes with the 80-degree air that’s at the
ceiling and you hope you get 70 or 72 degrees. In underfloor, you
supply 63- or 65-degree air so you have a 10-degree energy savings
there. And the whole floor is a wide-open plenum, so it’s very low
pressure as compared to the pressure you need to pump all that air
through duct work.
Finally, when you talk about daylighting and views, there’s a big
benefit there with natural lighting. There’s an energy savings as
much as it is a more desirable lighting effect and views you can put
into the whole biophilia bucket. […] So raised flooring supports and
really goes hand-in-hand with the open-plan concept and daylighting
[because] I can raise my ceiling higher and now expose more glass.
I can get rid of my drop ceiling, which is what more people are doing,
and now I can take my glass literally up to the main structure beams
at the perimeter of the floor plate. You can start getting 10, 11 feet
of glass. All of that plays into that raised floor potential of eliminating
the ceiling, eliminating the walls and providing better daylighting and
interiors | HOW I SOURCED IT
ABOVE Exposed concrete, wood, porcelain and terrazzo were among the variety of materials
tenants choose to use for their floors.
INSET Flexibility is the number one benefit of raised access floors for a project like the
Salesforce Tower as they allow tenants to reconfigure features like power, data and HVAC
as the space changes.