An impact analysis for the National Guide for Wildland-Urban Interface Fires

Table 2: Sample house data fields Field

Example

Meaning

ID

1

A unique index

Community

Wells, MB

Community, province

Address

123 Main St

Street address

Storeys

2

Number of storeys above grade

Basement

0

Storeys below grade

Bd

4

Number of bedrooms

Ba

3

Number of bathrooms

Sq ft

2,184

Living area in square feet by real estate listing standards

Year built

2017

Year built

Year built est

FALSE

Is “year built” an estimate based on data collector's judgment of its architectural style?

Plan aspect ratio

1.3

Approximate ratio of longer plan dimension to shorter, for estimating exterior wall perimeter as a function of plan area

Exterior wall area

2,666

Exterior cladding area in square feet, estimated using sq ft, storeys, plan aspect ratio, and estimated storey height

Roof matl

Comp

Roof material

Roof matl est

FALSE

“Roof material” is an estimate from a photo

Ext wall cladding

Stone

Exterior wall cladding material

Ext wall cladding est

FALSE

Exterior wall cladding material is an estimate from a photo

Foundation and deck

TRUE

Is the deck either enclosed or treated for fire resistance

enclosed or treated Glazing surface area

0.3

Fraction of exterior wall area that is glazed

Homes in

< 100

Number of homes in the neighbourhood

Access routes

1

Number of access routes per Chapter 4

Enough access

TRUE

Do the number of access routes satisfy recommendations?

neighbourhood

Access route length Fuel 0–100 m

If another access route were added, what would its shortest practical length in feet be? F3

Fuel 100–500 m

Fuel type according to National WUI Guide Table 2, within 100 m of the sample building As above, but 100 m to 500 m from the sample building

Hazard

High

Hazard level according to Figure 6 in the National WUI Guide

Exposure

High

Exposure level according to simplified method of National WUI Guide Section 2.6.3.1

Paved

TRUE

Is the road in front of the sample house paved?

UG elec

FALSE

Is the electricity distribution system at the sample house underground?

Wood poles

TRUE

If the electricity distribution is on above-ground poles, are they made of wood?

> 5 m clear wires

FALSE

If electric distribution is on above-ground poles, is there at least 5 m clearance between the wires and vegetation?

Hydrants

FALSE

Are there fire hydrants within ~500 feet of the sample house?

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B.6 Knowledge gaps and limitations of these conclusions

B.4 Penticton Indian Band

B.3 Sagkeeng Anicinabe First Nation community

Table 44: Summary of limitations and opportunities for future work

Table 43: Community costs to satisfy recommendations of the National WUI Guide

Table 42: Allocation of costs and benefits among stakeholder groups

Table 41: Long-term national benefits and costs of the National WUI Guide

Table 39: Total household costs for community-level compliance

Table 37: New design benefits, costs, and benefit-cost ratios for satisfying the National WUI Guide

Table 38: Municipal and utility costs for a sample community

Table 30: Vulnerability (i.e., the response function) by equation 5

Table 20: Cost options to evaluate for each archetype

Table 19: Unit costs to satisfy recommendations of the National WUI Guide

Table 17: Vinyl cladding fire spread ratings for some leading manufacturers and common products

Table 18: Initial clearing and maintenance costs for priority zones

2.12 Community costs for planning and resources

3.6 Community costs for WUI guide Chapters 4 and 5

Table 2: Sample house data fields

2.13 Cultural and other intangible non-monetary issues

3.2 Select archetypes

2.8 Additional living expenses and business interruption losses

2.6 WUI fire vulnerability models

1.3 Organization of the report

2.1.4 Relevant Evidence from the 2011 Flat Top Complex Wildfire

2.7 Deaths, non-fatal injuries, and post-traumatic stress disorder

2.1.6 Relevant Evidence from Recent California WUI Fires

2.3 Retrofit and new design costs, benefits, and benefit-cost analysis

Summary of key findings

2.2 WUI guides, standards, and model codes

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