Results and Discussion

Data Inventory

Time Requirements for Removal of Barrack Components

 As shown in Table 3-1, each of the barrack components was partitioned into broad

categories of windows and doors, interior partitions, hazardous waste (composed

primarily of mercury thermostat switches, lead-acid batteries in exit lights and emergency

light fixtures, fluorescent tubes and ballasts), mechanical, electrical and plumbing (MEP)

materials (including sinks, toilets, showers, light fixtures, wiring and conduit, ducts, and

air handlers), interior finishes and framing, roof, walls and floors, and foundation. The

time required to remove each building component following the relevant set of steps

conducted in each scenario is also provided in Table 3-1. Asterisks in Table 3-1 denote

all components that were removed involving some degree of mechanical methods.

 Removal of hazardous materials (fluorescent lights and exit signs) and the

foundation of each of the barracks, mechanically performed in all scenarios, required the

same amount of time (5.0 and 3.3 hrs, respectively). Removal of windows and doors,

interior partitions, and MEP materials required the same amount of time for the three

scenarios that involved hand deconstruction (100% Manual, 44% Manual, and 26%

Manual) but a significantly lower time for the 100% Mechanical scenario. The windows

and door frames coated with lead-based paint and the MEP materials were manually

removed from the barracks involving hand deconstruction. The wood containing lead-

based paint was not considered hazardous waste because of the low concentrations of the

paint, and, therefore, it was disposed of in a C&D landfill. The windows and door frames

from the 100% mechanically demolished barrack were disposed of thus yielding no time

requirement, whereas the time for removing MEP materials under this scenario was lower