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Download PDF Guide (Free)Introduction: Why the Right Materials Matter
Choosing the correct aggregates and materials for your construction or landscaping project in North Dakota isn't just about cost—it's about performance, longevity, and compliance with local conditions. North Dakota's unique climate, with its harsh winters, spring thaw cycles, and variable soil conditions, demands careful material selection.
At Dakota Earthworks, based in Washburn, ND, we've spent years helping contractors, landowners, and homeowners across McLean County, Bismarck, Minot, and throughout North Dakota select the perfect materials for their projects. This comprehensive guide shares that expertise.
Understanding Aggregates: The Basics
Aggregates are granular materials used in construction and landscaping. They provide structural support, drainage, and stability. In North Dakota, selecting aggregates that can withstand freeze-thaw cycles is critical for long-term project success.
What Makes North Dakota Different?
Our state's climate creates unique challenges:
- Extreme freeze-thaw cycles: Materials must resist expansion and contraction
- Expansive clay soils: Common in Central and Western ND, requiring specific base materials
- Heavy spring runoff: Proper drainage materials are essential
- Wind erosion: Surface materials need stability against prairie winds
Complete Material Breakdown
1. Topsoil
What it is: The uppermost layer of soil, rich in organic matter and nutrients. Quality topsoil in North Dakota should be screened to remove rocks, roots, and debris.
Best for:
- Lawn installation and sodding
- Garden beds and raised planters
- Landscaping projects requiring plant growth
- Filling low spots in yards before seeding
How much you need:
- New lawn: 4-6 inches depth
- Garden beds: 8-12 inches depth
- General landscaping: 2-4 inches depth
Ordering: Topsoil is sold by the cubic yard. To calculate: Length (ft) × Width (ft) × Depth (ft) ÷ 27 = Cubic yards needed
2. Fill Dirt
What it is: Subsoil material used for filling and leveling. Contains little organic matter, making it stable and less prone to settling than topsoil.
Best for:
- Raising ground elevation around foundations
- Filling holes, trenches, or excavation sites
- Creating berms or landscape mounds
- Base layer under concrete slabs or pavers
- Backfilling around septic systems
Compaction matters: Fill dirt should be placed in 6-8 inch lifts and compacted to 95% standard proctor density for structural applications.
3. Crushed Rock
What it is: Mechanically crushed stone of various sizes. Angular edges allow pieces to lock together, creating a stable base. Common in North Dakota: limestone and granite.
Best for:
- Driveway base and surface (Class 5 or ¾" minus)
- Road construction and gravel roads
- Base for concrete slabs and retaining walls
- French drain systems and drainage applications
- Parking areas and equipment pads
Common sizes:
- Class 5 (Road Base): Mix of crushed rock and fines, compacts extremely well
- ¾" minus: Top dressing for driveways, packs tight
- 1½" crushed rock: Drainage applications, French drains
- 3" minus: Larger base applications, heavy equipment areas
4. Gravel (Pea Gravel & River Rock)
What it is: Naturally rounded stones, either river-worn or processed. Smoother than crushed rock, doesn't compact as tightly.
Best for:
- Decorative landscaping and pathways
- Around foundations for drainage and aesthetics
- Playground surfaces (certified playground gravel)
- Garden bed top dressing
- Between pavers and stepping stones
Popular sizes in ND:
- Pea Gravel (3/8"): Most popular for landscaping
- River Rock (1-3"): Decorative beds, dry creek beds
- Egg Rock (3-6"): Larger decorative applications
5. Sand
What it is: Fine granular material. Different types serve different purposes—concrete sand, masonry sand, and fill sand each have specific uses.
Best for:
- Concrete and mortar mixing (concrete sand)
- Paver base and leveling (concrete sand)
- Sandbox fill (washed play sand)
- Pipe bedding for utilities
- Traction on icy surfaces (winter sand)
- French drain backfill
Common types:
- Concrete Sand: Coarse, angular, for structural applications
- Masonry Sand: Finer, for mortar and grout
- Fill Sand: General fill and backfill purposes
- Play Sand: Washed, safe for children's sandboxes
6. Riprap (Rip Rap / Rip-Rap)
What it is: Large, durable stones (typically 6" to 24"+) used for erosion control. Essential in North Dakota for controlling runoff from spring snowmelt.
Best for:
- Shoreline and riverbank stabilization
- Drainage ditch lining and culvert protection
- Steep slope erosion control
- Pond and lake edge protection
- Storm water management
- Protecting structures from water flow
Sizing guidance:
- 6-12" riprap: Light erosion control, residential ditches
- 12-18" riprap: Standard erosion control, culvert protection
- 18-24"+ riprap: Heavy-duty applications, major waterways
Installation tip: Riprap should be placed on geotextile fabric to prevent soil migration while allowing water flow.
7. Decorative Rock
What it is: Specialty stones chosen for appearance. Available in various colors, sizes, and types including lava rock, white marble chips, red lava rock, and rainbow rock.
Best for:
- Landscape bed accents and groundcover
- Around trees and shrubs
- Fire pit surrounds and outdoor living areas
- Xeriscaping and low-water landscapes
- Creating visual contrast in garden design
How to Calculate Material Quantities
For Rectangular Areas:
Formula: Length (feet) × Width (feet) × Depth (feet) ÷ 27 = Cubic Yards
50 × 12 × 0.5 = 300 cubic feet
300 ÷ 27 = 11.1 cubic yards
Order 12 yards (always round up and add 10% for compaction and settling)
Coverage Guide (1 Cubic Yard Covers):
- At 1" depth: 324 square feet
- At 2" depth: 162 square feet
- At 3" depth: 108 square feet
- At 4" depth: 81 square feet
- At 6" depth: 54 square feet
Delivery & Logistics in North Dakota
What to Expect:
Delivery vehicles: Most aggregates are delivered in dump trucks (10-15 yard capacity). Ensure your site has:
- At least 14 feet of overhead clearance (power lines!)
- Firm, stable ground for heavy truck access
- Adequate space for the truck to dump and maneuver
- Clear path from street to dump location
Timing Considerations:
In North Dakota, material delivery can be affected by:
- Spring thaw (March-April): Road restrictions may limit delivery trucks
- Winter (December-February): Frozen ground makes some materials harder to work with
- Peak season (May-September): Best weather but highest demand—order ahead
Common Project Guides
Installing a Gravel Driveway in North Dakota
Materials needed (for 50' × 12' driveway):
- Base layer: 12-15 yards Class 5 crushed rock (6" compacted depth)
- Top layer: 4-5 yards ¾" minus crushed rock (2" depth)
- Geotextile fabric: 200 square feet (recommended under base)
Foundation Drainage (French Drain)
Materials needed (for 100 linear feet):
- Drain rock (1½" crushed): 6-8 yards
- 4" perforated drain pipe: 100 feet
- Landscape fabric: 300 square feet
Landscape Bed Preparation
Materials needed (for 200 sq ft bed):
- Topsoil: 2-3 yards (4-6" depth)
- Decorative rock or mulch: 1-2 yards (2-3" top layer)
- Landscape fabric: 200 square feet
- Edging: 50-60 linear feet
Quality Indicators: What to Look For
Topsoil Quality:
- Dark, rich color (indicates organic content)
- Screened, free of large rocks and debris
- Crumbly texture, not clay-heavy
- Slightly moist, not soaking wet or bone dry
Crushed Rock Quality:
- Clean, consistent sizing
- Angular edges (better compaction)
- Minimal dust or fines (unless specified like Class 5)
- Uniform color indicates consistent source
Sand Quality:
- Clean, washed sand for structural applications
- Consistent grain size
- Free of organic material
- Appropriate coarseness for intended use
Pricing Considerations in North Dakota
Material costs vary based on:
- Quantity: Larger orders typically have lower per-yard costs
- Distance: Delivery charges increase with distance from source
- Season: Peak season (summer) may have higher prices
- Material type: Specialty/decorative materials cost more than basic fill
- Processing: Screened and washed materials cost more than raw
Environmental Considerations
North Dakota's agricultural and conservation focus means responsible material use:
- Erosion control: Use riprap and proper drainage to prevent soil loss
- Dust management: Water crushed rock surfaces during dry, windy periods
- Runoff management: Proper grading prevents water from affecting neighboring properties
- NRCS compliance: Agricultural projects may need to follow conservation district guidelines
Working with Dakota Earthworks
At Dakota Earthworks, we make material selection and delivery easy:
Our Process:
- Free Consultation: Call 701-773-DIRT (3478) to discuss your project
- Site Assessment: We can visit your Washburn, Bismarck, or McLean County location
- Material Recommendation: Based on your project, soil, and budget
- Accurate Calculation: We ensure you order the right amount
- Timely Delivery: Scheduled to fit your project timeline
- Professional Service: Experienced operators, clean delivery
Why Choose Dakota Earthworks:
- ✅ Local Knowledge: We understand North Dakota soil and climate
- ✅ Quality Materials: Sourced from reliable local suppliers
- ✅ Fair Pricing: Competitive rates, no hidden fees
- ✅ Professional Delivery: On-time, clean, careful placement
- ✅ Expert Guidance: We help you get it right the first time
Frequently Asked Questions
Q: Can I mix different materials for my project?
A: Absolutely! Many projects benefit from layering materials. For example, a driveway might use fill dirt as base, Class 5 crushed rock for structure, and ¾" minus for the surface.
Q: How far in advance should I order materials?
A: For common materials in off-peak seasons, 3-5 days is usually sufficient. During peak season (May-September) or for specialty materials, order 1-2 weeks ahead.
Q: Do I need to be home for delivery?
A: Not necessarily. If you've clearly marked where you want materials dumped and the driver can access the site safely, you don't need to be present. However, being available is recommended to ensure proper placement.
Q: What if I order too much material?
A: Excess topsoil can be used in other areas of your yard. Excess gravel or crushed rock can often be used for future paths or drainage projects. We recommend starting with a conservative estimate and ordering more if needed.
Q: Can materials be delivered in winter?
A: Yes, though some materials like topsoil may be frozen in clumps. Crushed rock, gravel, and sand can be delivered year-round. Winter delivery may be limited by weather and road conditions.
Q: Do you offer installation services?
A: Yes! Dakota Earthworks provides full excavation and installation services. We can handle everything from site preparation to final grading and material placement.
Conclusion: Getting Your Project Right
Selecting the right aggregates and materials is crucial for project success in North Dakota's challenging climate. Whether you're building a driveway in Washburn, installing a French drain in Bismarck, or protecting a waterway with riprap in McLean County, the right materials make all the difference.
At Dakota Earthworks, we've helped hundreds of North Dakota landowners, contractors, and homeowners choose and install the perfect materials for their projects. Our local knowledge, quality materials, and professional service ensure your project starts on solid ground.
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Contact Dakota Earthworks today:
- 📞 Phone: 701-773-DIRT (3478)
- ✉️ Email: [email protected]
- 📍 Location: Headquartered in Washburn, ND - Serving Central North Dakota
- 🚚 Delivery: Serving all of North Dakota
Professional excavation and landscaping services with quality materials delivered throughout North Dakota. Experienced with agricultural cost share programs including NRCS EQIP and FSA CRP.