Skip to main content

Dozers

Steward: Equipment Technology Committee

Intro paragraph

Dozer Typing Standards

Requirements Type 1 Type 2 Type 3 Type 4
Net HP Range* 240 and up 150 - 250 90 - 165 50 - 110
Minimum Base Weight** 60,000 lbs. 35,000 lbs. 24,000 lbs. 10,000 lbs.
*Manufacturer’s published rated net horsepower (HP). Horsepower rating taken at the flywheel with all the engine accessories installed not counting transmission losses or anything after the flywheel
**Manufacturer’s published base weight for dozer including equipped track width and blade configuration, equipment fluids, etc. If a published base weight is unavailable, a certified in-service weight shall be used
Base operational weight is only used for typing. Final in-service dozer weight will be higher and include additional accessories such as winch, grapple, forestry package, etc. Final in-service dozer weight must be used when calculating hauler capacity, bridge weight limits, etc.

Dozer Fireline Construction Rates (Single Pass) in Chains per Hour

Fire Behavior Fuel Model Up or Down Slope Slope Class 1
0-25%		 Slope Class 2
26-40%		 Slope Class 3
41-55%		 Slope Class 4
56-74%
Type 3 Dozer
1, 2		 Up 55-90 30-55 8-30 0-8
Down 90-110 90-110 20-90 0-20
3, 5, 8 Up 45-70 25-45 2-25 0-2
Down 70-80 65-80 0-65 0
4 Up 20-35 10-20 0-10 0
Down 35-40 25-40 0-25 0
6, 7, 9 Up 35-55 15-35 0-15 0
Down 55-60 40-60 0-40 0
11, 12 Up 15-25 7-15 0-7 0
Down 25-30 10-30 0-10 0
10, 13 Up 8-15 3-8 0-3 0
Down 10-15 5-10 0-5 0
Type 2 Dozer
1, 2		 Up 85-125 60-85 30-60 0-30
Down 125-145 130-145 75-130 0-75
And so on          

Note: Production rates are not precise but vary with conditions. The higher rate can be applied for situations involving:

  • Newer dozers (1975 and later)
  • Dozers in excellent operating condition
  • Most-qualified operators
  • Temperatures below 90 °F
  • Moist soil, few or no rocks
  • No lost time • Indirect fireline
  • Average fire behavior
  • Daylight operations
  • Less resistive vegetative types within each fire behavior fuel model

 

Table Title???

Dozer Horse Power Examples
Type 1 HEAVY: 200 Minimum Horse Power D-8, D-7, JD-950
Type 2 MEDIUM:  100 Minimum Horse Power D-5N, D-6N, JD-750
Type 3 LIGHT:  50 Minimum Horse Power JD-450, JD-550, D-3, D-4
Minimum standards for personnel with dozers will differ depending on fuel type, terrain, and resource configuration. Dozer strike teams may use team leader in place of additional personnel per dozer. Fuel requiring burnout and terrain that requires scouting demands two personnel per dozer.

NWCG Latest Announcements

NEW! S-219, Firing Operations (Blended) Now Available

Date: Sept 11, 2025
Questions? Please contact:
Fuels Management Committee 

The S-219, Firing Operations (Blended) course is now available on the Wildland Fire Learning Portal. Developed through the Incident Performance and Training Modernization (IPTM) effort, this training supports individuals working towards Firing Boss, Single Resource (FIRB) incident qualifications.

This blended course combines online and instructor-led training to provide students with the knowledge and skills required to perform the duties of the FIRB, as described in the NWCG Incident Position Standards for Firing Boss, Single Resource, PMS 350-105.

Any changes to qualification pathways will take effect with the next update of the NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1, scheduled for January 2026.

References:

S-219, Firing Operations (Blended)

NWCG Firing Boss, Single Resource Position Page

Wildland Fire Learning Portal

NWCG Committees Observe Suicide Prevention Awareness Week: September 7-13, 2025

Date: Sep 5, 2025
Questions? Please contact:
Mental Health Subcommittee

The NWCG Mental Health Subcommittee (MHSC) and Risk Management Committee (RMC) recognize the unique challenges and demands faced by the wildland fire community. The MHSC and RMC know that we are all stronger together and believe in fostering a culture of support, understanding, and resilience.

Suicide Prevention Awareness encourages us to actively connect with and support each other. For more information that could make a difference for yourself or someone else please review the materials and resources provided for the 2025 Suicide Prevention Awareness Week.

References:

2025 Suicide Prevention Awareness Week Materials and Resources

NEW! Incident Performance and Training Modernization Story Map Now Available

Date: Aug 26, 2025
Questions? Please contact:
National Wildfire Coordinating Group

NWCG is excited to announce the launch of the Incident Performance and Training Modernization (IPTM) Story Map, a new interactive resource that showcases how NWCG is transforming wildland fire training and qualifications through a performance-based system.

Since its launch in 2023, IPTM has made major strides in updating how we manage incident positions:

  • 36 incident positions now have new Incident Position Standards and Next Generation Position Task Books available for field use
  • 6 more incident positions are nearing completion
  • 111 total incident positions are being analyzed through the IPTM initiative

The Story Map guides you through the IPTM process, highlights key accomplishments, and outlines what’s ahead. Whether you are a trainer or a trainee, this tool offers valuable insight into the modernization effort shaping the future of wildland fire training and qualifications.

This effort would not be possible without the contributions of NWCG staff, NWCG committees, and hundreds of subject matter experts across the wildland fire community.

References:

IPTM Story Map

Incident Performance and Training Modernization Webpage

NEW! S-290, Intermediate Wildland Fire Behavior (Blended) Available Now

Date: Aug 15, 2025
Questions? Please contact:
Fire Behavior Subcommittee

NWCG is excited to announce that the S-290, Intermediate Wildland Fire Behavior (Blended) training is now available on the Wildland Fire Learning Portal. S-290 (Blended) training combines online training and instructor-led training components that support individuals working towards any Single Resource Boss or Fire Effects Monitor incident qualifications.

This second course in the series collectively serves to develop fire behavior prediction knowledge and skills, and provides more detailed information on fuels, weather, and topography that affect wildland fire behavior for safety purposes.

Students are required to finish the prerequisite S-190, Introduction to Wildland Fire Behavior, before enrolling in S-290, Intermediate Wildland Fire Behavior (Blended).

References:

S-290, Intermediate Wildland Fire Behavior (Blended)

S-190, Introduction to Wildland Fire Behavior

Wildland Fire Learning Portal