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Green Building Amendments - Oct 20 2014

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by

michael vanderlaan

on 20 October 2014

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Transcript of Green Building Amendments - Oct 20 2014


CHANGE
A Gross Floor Area (GFA)
exclusion
for areas used exclusively for Natural Ventilation up to a maximum of
1% of the total GFA
.

RATIONALE
Natural Ventilation can provide a

low cost alternative
to mechanical ventilation and improve
building comfort
and

energy efficiency
.

Already supported on a case-by-case basis, through a rezoning process


CHANGE
A floor area
exclusion
for
Green Building Systems
, up to a maximum of 100 sq.ft. per building and 15 sq.ft. per dwelling.

RATIONALE
To incentivize
sufficiently-sized
and
accessible

mechanical rooms

and
sustainable technology
.

Cellars in principal buildings are already excluded for approximately 97% of new construction
Exclusions for Solar Collectors, heat pump systems, waste heat recovery systems, biomass systems, rainwater and grey water equipment


CHANGE

Mandatory
minimum garbage and recycling space
requirements for all multiple unit residential buildings.

RATIONALE
Waste diversion is an integral part of ensuring building occupants can
meet
local and regional
waste diversion goals
and regulations.

Designed to meet Metro Vancouver guidelines
Change already supported by Council in principle
Urban Development Institute concerns addressed


CHANGE
Include
Solar Shading, Solar Panels
, and
Green Walls
into allowable
setback projections
.

RATIONALE
To remove a barrier to green building designs that provide
sun control, harness

the

sun’s energy
, and provide
pleasing street-scapes
.

Similar provisions have been adopted by the City of Vancouver since 2008.
BC Building Code spatial separation requirements will remain in place
Building permit requirements will address interconnection between systems


CHANGE
A
floor area
and
lot coverage

exclusion
for
Greenhouses
up to maximum area of 108 sq.ft.

RATIONALE
Access to
local food production
engages residents and improves
personal well-being, nutrition, and food security.

Additional to the accessory buildings exclusion of up to 100 sq. ft. in size.


CHANGE
Solar collector height exemption
(4 feet for Ground-oriented Residential and 6 feet for all other Zones) and
Green Roof height exemption
(1.5 feet for Ground-oriented Residential and up to 3.5 feet for all other Zones).

RATIONALE
To remove a barrier to green building designs that
provide insulation, harness the sun’s energy
, and
storm-water mitigation.

Chimneys, antennae, church spires, flagpoles, elevator shafts, already exempt
Building permit to address interconnection between systems

CHANGE
A floor area exclusion for
staircases
designed to be
inviting, highly visible
and a practical
alternative
to
elevator
use.

RATIONALE
To
reduce
building
energy use
associated with elevator usage and to
improve health and social interactivity
of building users.

Requirements based on New York's Active Design Guidelines

CHANGE
A floor area
exclusion
for
wall thicknesses
in excess of 6.5 inches if used exclusively for the provision of
insulating materials
.

RATIONALE
This amendment is to
remove
an existing regulatory
barrier
to
wall assemblies
that exceed the minimum insulation required by code.

This exclusion adds to the existing rainscreening wall assembly exclusion
Higher levels of insulation are a needed for the Passive House standard.


CHANGE
Remove

the floor area
exclusion

for

Bay Windows
but still permit them as design features.

RATIONALE
Bay windows are being encouraged even though this feature makes it more difficult to achieve a
higher energy efficiency
.

This change may also encourage better designs as "false" bay windows are currently being introduced to get the floor space exclusion.
This exclusion has also been removed in the City of Vancouver's Zoning Bylaw.

BAY WINDOWS
WASTE DIVERSION
NATURAL VENTILATION
SOLAR / GREEN WALLS
GREEN SYSTEMS
ACTIVE DESIGN
WALL PERFORMANCE
GREENHOUSES
Zoning Amendments to Support Green Buildings
Public Hearing Presentation October 20, 2014
Zoning Amendment Bylaw, 1995, No. 6700, Amendment Bylaw, 2014, No. 8391
CONTEXT
SOLAR / GREEN ROOFS
Full transcript