Construction Today - July 2016 - 163

liner for the pool instead of the traditional Gunnite and then heavily
reinforced the beams that create the vault in which the stainless
steel liner is seated," Rice explains.
The bottom surface of the pool was thicker and more heavily reinforced than typical floors, and the upturned beams also were heavily
reinforced around the perimeter of the pool. For seismic resistance, a
stout moment frame is installed in the tower and shear walls are several inches thick to resist the twisting motion that can occur during
seismic events.

Self-Performed Concrete
Webcor Builders - which is functioning as the general contractor
on the project - self-performs the concrete on most of its projects,
and the Hollywood Proper Residences at Columbia Square was no
exception. "At Webcor, we started out as a concrete company," Rice
explains. "We self-perform concrete on our projects, even on ones for
which we are not the general contractor. You have more control of
the schedule because you're setting the pace. Erecting the structure
is one of the key critical paths of the project, so self-performing those
related activities puts us in a position of setting the pace for the
overall project."
Rice estimates that more than 30 subcontractors worked on the
tower. The mechanical, electrical and plumbing subcontractors were
in a design/assist position, while other subcontractors, such as those
providing the curtain wall and the fire alarm, were full design/build.
Rice notes that keeping current with local building and fire codes
is an ongoing challenge. "Amendments to the codes are being adopted on a continual basis,"she points out. "Several have been enacted
since the code under which our project was permitted. It's been a
great learning experience for our current and upcoming projects."
An example is the change in the code for the rooftop helipads
that are required on high-rises for use by fire department helicopters during emergencies. "On our previous projects, the helicopter
landing pad had to be 50 feet by 50 feet," Rice recalls. "On this project
because of recent updates in the code, we got a modification to build
a 24-foot by 30-foot tactical landing facility."

or no volatile organic compounds and no formaldehyde. Plumbing
fixtures are low-flow, and the residential units have individual
HVAC units that use variable refrigerant flow to save energy. The
building management system presets the HVAC units for efficiency
and allows modification within a zone of efficiency.
Most of Webcor's projects are in California. "We're very heavily
busy in the Bay Area and down here in LA," Rice says. "We have a
little bit of work in San Diego and a Hawaii office."
Rice attributes the success of the Hollywood Proper Residences
at Columbia Square - which has not had a lost-time accident - to
its team of architectural firms that work on the entire complex of
buildings using BIM. Webcor worked with GBD Architects on the
residential tower, for which the firm is the administrative architect.
The other firms are executive architect House and Robertson
Architects Inc., which is responsible for the entire campus, and Rios
Clementi Hale Studios, the design architect for the entire campus.
"GBD is a good hands-on, collaborative architectural firm," she
says. "We also have very good subcontractors who take pride in their
work, so the quality level is exemplary on this project."

Cornerstones of Success
Webcor Builders says it looks at its projects as being more than mere
jobs. "We are continuously refining and improving our process," it
states. "Every project yields lessons learned, resulting in smarter decisions and building efficiency into the framework of who we are."

Spaced Out
As with many urban projects, space was at a premium for construction of the hotel and residences. "This is a tight site with limited use
of the public right-of-way," Rice says. "We only had partial street
closures available because it's a very busy urban area. The city didn't
allow for full street closures on this particular block, so that was
always challenging, too.
"We'd have to do separate permitting whenever we had to bring
in a crane or require a full street closure," she continues. "We had
to work with the city whenever we needed to close the street on a
temporary basis. There was a lot of coordination and communication
with the city and stakeholders affected by the street closure, such as
nearby residences and businesses."
Many of the energy-efficient features specified in LEED certifications have been adopted by the California building code, Rice says.
These include materials and woodworking that use low amounts

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Table of Contents for the Digital Edition of Construction Today - July 2016

Contents
Construction Today - July 2016 - Cover1
Construction Today - July 2016 - Cover2
Construction Today - July 2016 - 1
Construction Today - July 2016 - Contents
Construction Today - July 2016 - 3
Construction Today - July 2016 - 4
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