The Green Design Team

The design team should, at a minimum, include the owner, the architect, a knowledgeable heating, ventilating, and air-conditioning (HVAC) designer, and an experienced contractor. For larger projects, a mechanical engineer, structural engineer, civil engineer, landscape architect, construction manager, and property manager are also needed. If the design team does not have green building expertise, a green building consultant should be included. When selecting team members, requests for pro-

FIGURE 2.2. The integrated design process continues throughout the course of developing a project, from design to construction.


1. Project definition

2. Program and site selection

3. Massing and orientation

4. Charrette

5. Research

6. Cost analysis

7. Materials and systems decisions

8. Specification review

9. Contractor orientation

10. Requests for information and HERS testing


Passive roof ventilators Energy Star White "Cool" roof Conduit for future photovoltaic system Prefabricated roof truss with integral parapet Perimeter insulation

R-30 formaldehyde-free blown insulation or glass batts Caulk

Engineered wood headers where needed, insulate cavity

Aluminum windows with thermal break Operable double glazed Low-E windows Sloped sill with self-adhering flexible flashing pan OSB in lieu of plywood Vapor barrier

R-19 formaldehyde-free blown insulation or glass batts

Control joint

Perimeter insulation

Eliminate header

AwningsfaJ.south elevations min.

Maximize head height

for deeper daylight penetration

Sloped sill with self-adhering flexible flashing pan Wood studs at 24" on center

Floor and wall coverings with recycled content and low VOC

Concrete thermal mass up to 50% fly ash

Rigid under slab insulation

Rainwater leader to bioswale Recycled aggregate fill


Aluminum window with thermal break, insulated glass & Low E coating

A.C. sleeve & insulated cover

CMU with bituminous dampproofing at cavity face

Finish flooring

Precast conc. plank

Cast stone band Rigid insulation

Cast stone lintel at window

FIGURE 2.3. The above cross sections show how the various envelope elements can be integrated to achieve an enclosure that is thermally effective, avoids moisture intrusion, and also allows for flow of fresh air into the living space and exhaust of stale air to the exterior. While the specific design approach and material relationships differ between concrete masonry (2.3b) and wood frame construction (2.3a), similar practices such as the effective placement of insulation, providing continuous drainage plain, thorough flashing, and planning for ventilation apply to both construction types.

Figures courtesy of Dattner Architects (2.3a) and Van Meter Williams Pollack (2.3b)

posals (RFPs) or requests for qualifications (RFQs) should specify what type of green building experience is required.

If at all possible, select and retain the contractor through a negotiated bid process. This approach allows the developer to select a builder with experience in green construction and to integrate the contractor into the project team at the early stages of design. Selecting a contractor early on helps to ensure that the people responsible for building the project are knowledgeable about the green design elements, allows the contractor to participate in the give-and-take of the design process, and provides a way to get ongoing feedback on the costs and practicality of various options. If a public bid is required, use a two-step contractor selection process that focuses first on qualification and then allows the prequalified general contractors to submit competitive bids. To gain expertise on construction and cost-related issuesduring design, retain a construction management consultant or other professional with experience in construction to participate in the green design charrette and provide cost estimates during design.

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