University of Manitoba WORK IN EXISTING BUILDING Section 16203
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1.1 RELATED WORK
.1 Basic Electrical Materials and Methods Section 16050
.2 Conduit Section 16111
.3 Fastenings and Supports Section 16126
.4 Cabinets, Splitters, Junction Boxes Section 16131
.5 Outlet Boxes and Fittings Section 16134
.6 Wiring Devices Section 16140
.1 The building shall remain open and in normal operation during the construction period.
.2 Where existing services, such as electrical power, fire alarm system, sound system, etc., are
required to be disrupted and/or shut-down, coordinate the shut-downs with the Owner and
carry out the work at a time and in a manner acceptable to them. Carefully schedule all
disruption and/or shut-downs and ensure that the duration of same is kept to the absolute
minimum. Submit for approval a written, concise schedule of each disruption at least 120
hours in advance of performing work and obtain Owner’s written consent prior to
.3 Should any temporary connections be required to maintain services during work in the
existing building, supply and install all necessary material and equipment and provide all
labour at no extra cost. Should any existing system be damaged, make full repairs without
extra cost, and to the satisfaction of the Owner and Consultant.
.4 Refer to General Conditions for phasing and staging of work and adhere to that schedule.
Comply with instructions regarding working hours necessary to maintain the building in
.5 Coordinate complete installation of relocated utility services, if required, with Utilities to ensure
minimum interruption of service. Coordinate the transfer of the existing Hydro service point to
the new service point with the Hydro utility in order to keep power interruptions to a minimum.
.6 Provide and maintain temporary Lighting and Power throughout the Project. Arrange for
connection with UofM Project Coordinator. Pay for temporary Telephone, Fax Data hook up,
line equipment necessary for contractor’s use. Provide and maintain temporary Fire
Protection Equipment during performance of work.
1.3 EXISTING DEVICES IN NEW CONSTRUCTION
.1 Where existing devices (receptacles, switches, etc.) presently mounted on a wall which will be
covered with a new finish, provide an extension ring, coverplate, etc., as required to mount the
device to the new wall.
.2 Where existing conduits pass vertically through a floor area, relocate those conduits to be
installed concealed in a new wall or surface-mounted in a service area. Extend conduit,
wiring, etc., as required.
.3 Existing junction boxes in walls and ceiling spaces required to maintain existing circuits shall
1.4 EXISTING WIRING
.1 In all areas where existing walls, ceiling, etc. are required to be cut into or removed or other
similar construction or alterations are required, the existing wiring in the areas required to
remain in use for any reason, this Contractor shall re-route, alter and/or divert all such wiring
in these areas in an approved manner, concealed in the building structure where required in
such a manner that the original electrical capacity or characteristics of the existing wiring is
.2 Cutting and patching necessary for conduit work, etc. shall be as specified in other sections
and shall be included in this section. Routes of conduits, etc. shall be co-coordinated with the
Owner and Engineer in order to keep such cutting and patching to a minimum. All existing
wiring that is required to remain in use and required to be diverted and extended to
appropriate existing panels, etc. shall be installed in conformity with the wiring method
.3 Existing branch circuit wiring within the area of the renovations which is substandard or does
not meet normal requirements shall be noted and the Owner advised. All existing circuits
University of Manitoba WORK IN EXISTING BUILDING Section 16203
Req. # Page 2
which are required to be reconnected shall be free from interconnection (cross-connected
circuits, ie; accidentally connected to the conductors of another circuit) and shall conform to
insulation tests described elsewhere. The responsibility for existing wiring which is not
required to be altered in any way and is beyond the area of this contract is not included in this
scope of work unless such wiring is specifically affected due to work carried out in this
.4 Existing wiring and outlets, etc. no longer required to remain in use shall be removed or if this
is not possible, rendered permanently in accessible and completely disconnected from the
electrical distribution system.
.5 Disconnect and remove all existing lighting fixtures for the construction of new ceilings where
required. Store fixtures on site as directed by Owner. Clean and reinstall the fixtures to the
original locations and reconnect to existing circuits. Provide mounting hardware as required.
1.5 SCHEDULE OF WORK
.1 Carefully note and refer to the Architect’s general schedule of work and include for all
requirements to conform to it.
1.6 PRE-TENDER ROUGH-IN INSTALLATION
.1 Contractor shall note all roughed in equipment by pre-tender Site Review.
.2 Coordinate pre-tender roughed in equipment with Tender Documents.
.1 Provide all materials required for the complete interface and reconnection installation as
herein described and as indicated on the drawings.
.2 New fire alarm devices, speakers, starters, panelboards, etc., required to be tied into existing
systems shall match the existing devices unless otherwise noted on plans.
.3 New wiring required to interconnect new devices to existing systems shall be provided to suit
the manufacturer’s requirements and instructions.
.1 Install boxes, conduit and wiring through existing areas as required for the new installation.
.2 Add modules, switches, etc., in existing control panels, as required, to extend existing
systems to new or renovated areas.
.3 Patch and repair walls and ceilings in existing areas that have been damaged to cut open due
to the new electrical installation.
.4 Where new cables or conduits have been installed through existing fire rated walls, seal
opening around cables and conduit to maintain fire rating.
.5 Remove all unused existing wiring and conduits back to respective panels where practical or
terminate in accessible junction boxes and identify the circuits as spares.
.6 Update and replace existing panel directories showing all remaining circuits and all new or
.7 Re-label existing panels as indicated on Drawings.