747 Wing House
The 747 Wing House was built on the site where existing Duquette structures had burned. Some of the materials from the previous building were used as walkways. The use of the existing pad minimized site grading. The foundation used many of the existing concrete retaining walls but they were rebuilt and reinforced as required to meet new code regulations. This greatly reduced the amount of concrete needed to make the foundation and new walls. Because the wings are only supported in four primary places to the ground, the foundation was further minimized. Both main wings are held up entirely by the four large mounts that the engines originally hung from. By designing the weight distribution on the mounts, it allowed for the outside walls of the building to be made of high efficiency self-supporting glass instead of conventional load-bearing wooden walls. This maximizes solar gain for heating and allows the entire building to be opened to the outside. This also keeps it cool in the summers and minimizes the need for artificial light.
Housing trust fund
In 1983, Boston established its first linkage program to help balance commercial construction with construction of affordable, residential development. All commercial construction projects of more than 100,000 feet requiring zoning relief are required to pay linkage fees or construct affordable housing and/or fund job-training programs. As of April, 2006 the city's linkage fee for affordable housing was $7.87 per square foot and $1.57 per square foot for employment. Since 1986, the Neighborhood Housing Trust has managed expenditures of affordable housing linkage fees. More than $81 million in linkage fees have funded the new construction or preservation of more than 6,000 units of homeownership, rental, or cooperative housing for households earning less than 80% of the median income. Among other eligible uses, funds can be used to develop abandoned property or convert non-residential property to residential. All developments must remain affordable for 50 years for ownership housing and in perpetuity for rental housing.