(b) Refer to VA Fire Protection Design Manual for Fire Alarm connection
requirements.
1.14 FIRE ALARM SYSTEMS
(a) See VA Fire Protection Design Manual for requirements.
1.15 ALTERATIONS TO EXISTING BUILDINGS
1.15.1 APPLICATION
This article applies to the design of projects involving the
construction of alterations to existing buildings and secondary
distribution upgrading.
1.15.2 DRAWINGS
For alteration projects, separate demolition drawings are required for
all areas involved in the project. Specific detailing of interfaces
between alterations and existing to remain shall be clearly indicated
on the drawings.
1.15.3 MODIFICATION VERSUS REPLACEMENT
Where equipment must be modified to be physically utilized in a
project, the following must be evaluated:
(a) Can the government look to one manufacturer for final
responsibility of the modified equipment?
(b) Is there a legitimate cost saving by modifying the existing
equipment rather than installing new? If yes, then modification should
be considered.
1.15.4 AGE AND PHYSICAL CONDITION
(a) The length of time in service of the wiring, devices and equipment
should be reviewed prior to considering reuse.
(b) The equipment should be capable of remaining in use for a minimum
of 15 years of additional life or having 60 percent of remaining life,
if not the equipment shall be replaced.
(c) Where equipment has been in operation for a number of years,
physical inspection of terminals, insulation, switching contacts,
control wiring, etc., shall be examined and recommended for use by the
Engineer.
1.15.5 PARTS AVAILABILITY
(a) After the Engineer's site surveys, the availability of spare parts
for existing equipment should be determined.
ELECTRICAL DESIGN MANUAL
1-11
GENERAL REQUIREMENTS
Previous Page
