safety codes council conference 2015 in canada... · 2016-12-10 · safety codes council conference...

Safety Codes Council CONFERENCE 2015 Mid-rise in Canada

June 3rd, 2015

• Kelly, Douglas and Co. Warehouse; Vancouver – 1905

• 180,000 ft² (17,000 m²)

• Masonry/Heavy Timber Construction

• Height: 30m

History of Mid-Rise in BC… and across Canada?

The Leckie Building is a massive cubic seven-storey Edwardian era warehouse/factory building located at the southeast corner of Cambie and Water Streets in the historic district of Gastown.

History of Mid-Rise in BC… and across Canada?

The first part of the structure was built in 1908 and a large addition to the east was constructed in 1913.

Clad in brick and granite, the internal structure of the building is built of massive timber elements.

Not bad for 107 year old building!

There are many of these buildings serving their owners over a century

310 Water St. Height: 80 ft (24m)

322 Water St. Height: 65 ft (20m)

342 Water St. Height: 72 ft (22 m)

Karacabeyli & Wong, 1985. Seismic Building Upgrading for Vancouver’s Gastown. Heritage Trust, Techical Paper Series 8.

Credit: Vancouver Public Library Archives

1905

2011

2011 156 Front Street, Toronto, Ontario

Winnipeg Warehouse District June 2012

6-storey glulam post-and-beam structure with

reinforced concrete cores (CSN FondAction)

North America’s first Six Storey Bldg goes to...? Quebec City!

Credit: FP Innovations

Credit: Cecobois

TF 2000, UK- BRE

“In 2000 a comprehensive research project into the structural ability, robustness and fire safety of multi-storey timber frame construction was conducted by BRE, UK. Codenamed TF2000, the project led to the production of authoritative best practice guidance on medium rise timber frame construction.

TF 2000, UK- BRE

Testing included:

• differential movement- to evaluate whole bldg performance

• compartmental fire test

• stair shaft fire test

• building envelope

• disproportionate collapse- internal & external walls

• acoustics

Enabled changes to the English Building Code to be updated to allow for seven storeys in wood construction using North American platform framing techniques

Multi-storey timber frame buildings are now established as an ideal and cost-effective off-site construction solution to apartments and flatted developments.

-Yes but how about something closer to home?

US Midrise Bldgs. WA State. 4-5 on 1 (wood on concrete)

US Midrise Bldgs- examples

Midrise Application: Commercial Hotel

North Seattle, WA

High End Res Rental Units Belcarra, Bellevue, WA

US Midrise Bldgs. CA State. 5-5 1/2 on 1 (wood on concrete)

California Findings

• Newest trend: Open mall theme

• “Americano” Glendale, CA is a prime example

• Infill Midrise Development: Commerical, Rental, Market Units

• Revitalization vehicle?

An Important Question to Ask when designing

a Mid-rise building

Can we just keep doing the same thing that we do for 3

and 4 stories and extrapolate it to 6 stories?

The Simple Answer

NO! There is a big systematic but workable difference!

Lets take a look….

Group C - Residential

3 storeys

4 storeys

1 800 m2

1 storey

9 000 m2

2 storeys

4 500 m2

3 storeys

3 000 m2

4 storeys 2 250 m2

5 storeys 1 800 m2

6 storeys 1 500 m2

ABC 2014 & NBCC 2015 Amended OBC 2012

QCC 2015

NBCC 2010

1 storey

7 200 m2

2 400 m2 2 storeys

3 600 m2

5 storeys 6 storeys

1 440 m2 1 200 m2

BCBC 2012

5 storeys 7200 m2

4 storeys 9000 m2

3 storeys - 12 000 m2

1&2 storeys Unlimited

6 storeys 6000 m2

Group D –

Business and Personal Services

3 storeys

4 storeys

3 600 m2

1 storey

18 000 m2

2 storeys

9 000 m2

3 storeys

6 000 m2

4 storeys 4 500 m2

5 storeys 3 600 m2

6 storeys 3 000 m2

ABC 2014 & NBCC 2015 Amended OBC 2012

QCC 2015

NBCC 2010

1 storey

14 000 m2

4 800 m2 2 storeys

7 200 m2

5 storeys 8 640 m2

4 storeys 10 800 m2

3 storeys - 14 400 m2

1&2 storeys Unlimited

6 storeys 7 200 m2

Mixed Uses Major Occupancies

Group C or D

Permitted –

all storeys:

• Group C

• Group D

Mixed Uses

Major Occupancies - Group C

Not permitted:

• Group A,

Divisions 1 and 3

• Group B

• Group F,

Divisions 1, 2 and

3 (except storage

garages)

Mixed Uses

Major Occupancies - Group C

Permitted on 1st

and 2nd storey:

• Group A, Division 2

• Group E

• Storage garages

(also permitted on 3rd

storey)

• Increased fire-resistance rating for separation

between some major occupancies

Not permitted:

• Group A,

Divisions 1 and 3

• Group B

• Group F, Division 1

Mixed Uses

Major Occupancies - Group D

Mixed Uses

Major Occupancies - Group D

Permitted on 1st and

2nd storey:

• Group A, Division 2

• Group E

• Group F, Divisions 2

and 3 (storage garages also

permitted on 3rd storey)

Height Limit

Limit height of uppermost floor level

to 18 m above 1st floor.

≤ 18 m

Roof

• If height > 25 m,

noncombustible or

FRTW roof

construction and

Class A roof covering

• If height ≤ 25 m,

combustible roof

construction and

roof covering (Class

A, B or C)

• 1-h fire-resistance rating

Roof

≤ 25 m • If height > 25 m,

whole roof:

noncombustible or

FRTW roof

construction and


• If height ≤ 25 m,

whole roof:

combustible roof

construction and

Class A,B,C roof

covering


Roof

≤ 25 m

• If height > 25 m:

noncombustible or

FRTW roof

construction and


• If height ≤ 25 m:

combustible roof

construction and

Class A,B,C roof

covering


Sprinklers

For 5- and 6-storey Group C:

• NFPA 13 required, as well as

additional sprinklering of exterior

balconies and decks

(balconies or decks exceeding 610 mm)

Exterior Walls

Cladding:

• noncombustible cladding, or

• cladding which passes the

requirements when tested in

accordance with CAN/ULC-S134

“Standard Method of Fire Test of

Exterior Wall Assemblies”

• 10% of area permitted to

combustible cladding

Firefighting Access

• Require 25% of the perimeter to be

within 15 m of a street or access

route

Firefighting Access

Firefighting Access

• Street or access route to have

elevation not more than 2 m below

the floor of the first storey

Firefighting Access

(Not to scale)

Additional Fire Protection Features

• More fire blocking in all (including

sprinklered) combustible concealed

spaces (unless filled with

noncombustible insulation with

max. 50 mm gap)

• Double duration of emergency

power supply for lighting and fire

alarm systems (1 hr.)

Construction and Demolition Sites (National Fire Code)

• Fencing, boarding or barricades

• Access control when site unattended

• Required water supply available

when combustible material arrives

on site

• Unobstructed clearance around

hydrants

Construction and Demolition Sites (National Fire Code)

• Minimum clearance (3 m) maintained

between exits and waste containers

• Smoking area requirements

• Minimum clearances between roofing

kettles and exits, means of egress

and exposed combustible materials

• Site identification

• Construction access - stairway

Additional Changes

Building Envelope

• Additional guidance for design to

reduce risk of:

• inadequate design features for

increased wind loading for higher

buildings

• potential detrimental effects of moisture

for higher building

Structural Material Shrinkage

Shrinkage must be a design consideration in wood-frame construction, particularly for buildings of five and six storeys in building height. Shrinkage parameters should be coordinated among design professionals of the other impacted building systems.

Dealing With Shrinkage •Understand your materials

•Kiln Dry Lumber for plates

•Engineered Wood Products -Joists

•Use Shrinkage Compensators

•Protect wood on Site

•Provide Details to Accommodate

•Be Cautious with Rigid Materials

Continuous Tie Rod Systems

Shrinkage Fastener (typical)

Bridge header support at top level

Bridge Trimmers Each Side

Bearing Plate – color coded (typical)

Joist Blocking (transfers compression)

Standard Rod Coupler (typical)

Compression Members for download

Threaded Rod (typical)

Rod System Anchor (cast in place shown)

Anchor Bolt

Compression Members

• Total bundled studs required match structural plans or rod system shop drawings

Typical Anchoring Methods

• Available anchoring types shown below. • Usually designed by Project Structural Engineer. • Epoxy - Hilti, Simpson, Powers, USP/Covert • Wood beam plate may be countersunk. • Method of steel beam connection varies per EOR.

Midrise Design Considerations and Challenges for Architects and Engineers

• Vertical Forces- high axial loading of studs require unique design solutions: stud size vs. stud spacing vs. material grade vs sill plate crushing- what will govern your design?

• Long Term Vertical Displacement- consolidation and shrinkage

• How to incorporate continuous tie rod systems into your design.

• Fire Sprinklers mandatory- NFPA 13 not NFPA 13R or NFPA13D

Call us we are here to help!

and the Forest Innovation Investment

BC Mid-rise Projects

Remy Project, Richmond, BC

•+…)

Six wood/Five on one, 190,000 sq ft , 188 Units Design Team: Patrick Cotter Architects, Richmond, BC Weiler Smith Bowers Structural Engineers, Burnaby, BC

“BC’s first Six Storey Building”??? I joist floors, I joist roof

2hr wood firewalls Wood elevator shaft Uplift forces: 20 locations 59000-62000lbs 54 locations 44,000 lbs


•+…) • originally a concrete and steel structure • economic downturn shelved it • wood conversion done

•“We saved 12% (on construction costs of $40 million)...that’s not pocket change

...it’s $4.8 million”

Dana Westermark, Oris Development Corp.

ODC’s next project: Rivers Edge 11 Six Storey buildings also in Richmond


-”from an urban point of view… this is a way of increasing density by up to 50% without making the big jump to high rise… it doesn’t radically change the kind of neighbourhoods that people live in and that is on of the big pluses” Patrick Cotter, Patrick Cotter Architects

PCA upcoming projects: Additional Midrise development projects in Richmond, Surrey, Langley and …

Quattro Project, Surrey, BC

Five/ Four on one Design Team: Patrick Cotter Architects, Richmond, BC Thomas Leung Structural Engineers, Vancouver, BC

Quattro Project, Surrey, BC

I joist floors, I joist roof 2hr masonry fire walls Masonry elevator shaft Uplift forces: 120+ locations ~20,000lbs Fully designed waiting for the go-ahead from Owner

Apple Valley Senior Housing, Kelowna

•+…)

Five Storey, 72 units Senior Housing Design Team: New Town Architects, Kelowna, BC Elbury Consulting, Kelowna, BC

Designed with I-joists and trusses

Bldg. O, UBCO Okanagan, Kelowna

•+…)

Five Storey, 212 Student Res units Design Team: Meiklejohn Architects Inc/ Ramsay Worden Architects Ltd Wicke Herfst Maver Consult , Surrey, BC

Designed with 2x10 joists and pre-manufactured wood roof trusses

Library Square, Kamloops, BC

Five on one, 151 Units (originally designed as a Steel bldg) Design Team: JM Architects, Surrey, BC Siefken Engineering, New Westminster, BC


I joist floors, I joist roof 2hr wood firewalls Wood elevator shaft Uplift forces: 84 locations 18,840 lbs On the first floor

Mid-Rise in Canada • BC:

• 150+ Mid-rise projects= 240+ buildings (contemplated, design, under construction)

• Alberta: – 1 pre application

– Many being considered

• Ontario: – 1 under construction

– 2 at permit

– 12+ doing due diligence

• Successful shake table test 7 storey wood frame- (Japan 2009)

• Technical documents produced • Systems were developed or brought in • Fire Safety and Security • Mid-Rise Wood Framed Construction

Handbook (Release Oct 2015)

Mid-Rise Support: material

Coming soon

Six Storey’s in Wood: The Alberta Mid-rise Opportunity Information

Workshop

Wednesday, July 15

Chateau Lacombe Hotel 10111 Bellamy Hill, Edmonton

Registration opening soon…..

safety codes council conference 2015 in canada... · 2016-12-10 · safety codes council conference...

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