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Engineered Wood Formwork is Cost-Effective, Customizable for Apartment Buildings

Affordability was a primary factor for Rush Commercial when making the concrete forming product selection for the construction of the Pacifica Apartments in Tacoma, Washington.

The two-building, 230,000-square-foot apartment complex featured 177 units, two underground parking garages, and required 7,000 yards of structural concrete – including five post-tensioned reinforced concrete decks with up to 800 cubic yards of concrete in each.

It wasn’t unfamiliar territory for the Washington State developer-contractor, which has built, owns and leases over one million square feet of commercial office space and 1,700 multi-family units. Rush Commercial selected 3/4-inch MDO (Medium Density Overlay) plywood for the concrete formwork. Superintendent Bob Bowman says key considerations were cost-effectiveness and how easily the panels could be to cut to size for use as fill-in formwork.

“There were many steps in the wall elevations and many different column block-outs on the exterior walls,” says Bowman. “Wood panels were the most cost effective for the formwork because we could cut and modify the panels to fit as needed. Then (after the concrete was poured) we would cut and modify the panels again to use in others areas.”

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What is a ‘life cycle stage’ and how do these link to the environmental assessment of whole buildings?

A good starting point is our Green Topics section and  Types of EPD and the five life cycle stages

How do core category rules link with environmental product declarations?

Whose responsibility is it to check that wood products being imported into the EU do not originate from illegally sourced timber supplies?

Does the EUTR require mills to provide any extra documentation for customs entry into the European Union?

Must all plywood and OSB panels carry a CE marking?

What is the definition of a construction product under the CPR?

What is a Declaration of Performance referred to under the Construction Products Regulation?

What is the difference between Structural 1 and Exposure 1?

The CE-mark on an APA plywood panel means it conforms to European Standards – but which ones?

I want to use a Rated Sheathing panel for flooring/ roofing application, what info do I need to know?

Plywood: Span rating
OSB: Span rating

What extra strength benefits do Structural 1 OSB panels provide over standard Rated Sheathing panels?

Do APA panels give off formaldehyde?

Plywood: Formaldehyde
OSB: Formaldehyde

What is the difference between a touch-sanded panel and sanded panel?

How do APA veneer grades match those given in the European standards

APA has produced two easy to follow guides to help match the grade numbers given on a US finished plywood panel with the requirements of  EN 635-3.

Detailed guide (below) listing permissible defects – with maximum sizes.

Simplified guide to the US PS 1-09 veneer grading rules and appearance grades in EN 635-3 based on the appearance of the surface veneers. Equivalents cannot be exactly compared as two different sets of grading rules apply.

How do I correctly gauge the face appearance a plywood Siding panel?

I want to specify an APA panel for concrete formwork – what do I need to know?

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I’d like to know more about a panel’s Span Rating and how it links to thickness.

Plywood: Span rating
OSB: Span rating

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Plywood: Span rating
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What are the main OSB panels likely to be available in Europe?

What are the main plywood panels likely to be available in Europe?

What are the main European standards that I would need to be aware of for OSB panels?

The main standards are: EN 13986 and EN 300

What are the main European standards that I would need to be aware of for plywood panels?

The main standards are: EN 13986, EN 636, EN 314, EN 635-3