Concrete Contractor in Chewelah, WA: Driveways, Patios, Shop Slabs & Foundations

Concrete contractor in Chewelah, WA, pouring driveways, patios, shop slabs and foundations built for Stevens County winters. Raven Buildings brings the same crew that pours our steel building foundations to Chewelah and the surrounding Colville Valley, with air-entrained mixes, compacted base and footings set below the frost line. Inside city limits we work under the City of Chewelah's permits and rules; outside them, under Stevens County's.

Concrete work we do around Chewelah

• Driveways and approaches: new driveways, replacements and widening, with control joints laid out before the pour
• Patios and walkways: broom-finish and stamped patios, steps and sidewalks
• Shop and garage slabs: floors for metal buildings, pole barns and detached garages, thickened where lifts or heavy equipment will sit
• Foundations and footings: for shops, garages, additions and pre-engineered metal buildings
• RV and equipment pads: parking for motorhomes, trailers, tractors and farm or logging equipment

First question: city or county?

A Chewelah address (99109) can be inside the city or out in unincorporated Stevens County, and that decides which office you deal with:

• Inside Chewelah city limits: the City of Chewelah Building Department, at City Hall, 301 E. Clay Avenue, Room 104 (509-935-8311). The City also takes building permit applications online
• Outside city limits: the Stevens County Building Division at the County Annex, 260 S. Oak Street in Colville (509-684-8325)
• County roads: driveway connections to a county road go through Stevens County Public Works, 234 Williams Lake Road in Colville (509-684-4548)
• How we check: we pull your parcel number before we quote, so the design and paperwork match the right office

Driveways and work in the street

Inside Chewelah

• Street Obstruction Permit: the City's Building page provides a Street Obstruction Permit application for work in a parking lane, travel lane or sidewalk. It ties to Chewelah Municipal Code Section 12.04, allows a period of ten days for the obstruction, and requires signs and barricades per the federal MUTCD if signing or detouring is needed
• Driveway and parking review: the City's building permit application includes a "Driveway and Parking Access" sign-off, so a new building's driveway gets checked at permit time
• Our approach: if a new driveway or approach touches a city street, curb or sidewalk, we confirm the requirements with the Building Department before we form anything

Outside city limits: Stevens County approach permits

• What it is: Stevens County says an approach permit allows a property owner to access a County road, and the County Engineer issues it
• The process: you apply, then flag the approach location where it meets the road. An inspector checks visibility and whether a culvert is needed for drainage. Once the inspection report is approved, the approach can be built, and the County does a final inspection
• Timeline: the County says processing takes 1 to 3 weeks
• Standards and drainage: the County's general provisions require approach work to meet the County Engineer's standards, and if the work interferes with road drainage, the applicant has to fix it as the Engineer directs
• Don't let it lapse: approach permits expire if the approach isn't built and passes final inspection within one year of preliminary approval

Built for Chewelah's climate

• Frost depth: the Stevens County building ordinance sets a minimum frost depth of 30 inches below finish grade for footings exposed to outside temperatures. Inside city limits, we confirm the frost depth with the City's Building Department for every permit. Our frost depth guide explains why it matters
• Weathering: northeast Washington is freeze-thaw country. The City of Colville's published design criteria rate weathering there as severe, and we design Chewelah mixes to the same standard

The right mix for freeze-thaw

Washington's residential code (IRC Table R402.2) sets minimum concrete strengths by weathering potential. Where weathering is severe:

• Garage floors, porches, carport slabs and exposed steps: at least 3,500 psi, air-entrained
• Air content: 5 to 7 percent total air. A steel-troweled garage floor can drop to 3 percent air only if the strength goes up to at least 4,000 psi
• Foundation walls and other vertical concrete exposed to the weather: at least 3,000 psi, air-entrained
• Freezing during construction: concrete in these locations that's subject to freezing and thawing while it's being built must be air-entrained
• Deicers: for driveways and flatwork that see deicing chemicals, the residential concrete code ACI 332-20 calls for 4,500 psi with a maximum water-to-cement ratio of 0.45

We order mixes to match and don't add water on site. Our concrete psi guide goes deeper, and our driveway thickness guide covers base, joints and rebar.

Pouring in cold weather

ACI's Guide to Cold Weather Concreting (ACI 306R-16) defines cold weather as when the air temperature has fallen to, or is expected to fall below, 40 degrees F during the protection period. Its key points:

• Protect it until 500 psi: concrete protected from freezing until it reaches at least 500 psi compressive strength won't be damaged by a single freeze. At 50 degrees F, most well-proportioned mixes get there within 48 hours
• No water curing in the cold: water curing can leave the concrete saturated when protection comes off, which reduces its freeze-thaw resistance
• Cool it down slowly: protection should come off gradually so the surface cools over about 24 hours, avoiding cracking from rapid temperature change
• Watch the accelerator: early strength from calcium chloride isn't worth it if it later corrodes the reinforcement and cracks the concrete

In practice that means blankets, heated enclosures or non-chloride accelerators for late-fall pours, and sometimes waiting for spring. See our winter concrete guide and when you can drive on a new driveway. For a new slab's first winter of deicers, see our sealing guide.

What a concrete patio costs

Raven's current pricing for a concrete patio, including site prep and the pour:

• Broom finish: about $12 to $20 per sq ft
• Stamped: about $18 to $30 per sq ft
• What moves the price: the size of the patio and whether a pump truck is needed to reach it

Driveways, shop slabs, RV pads and foundations are priced per project after a site visit, since base work, thickness, tear-out and access change the cost. Weighing your options? See our stamped concrete vs. pavers guide.

Slab and building from one contractor

Putting up a shop? We can pour the footings and floor and erect the building too. See our page for metal buildings in Chewelah, our shop slab thickness guide and our vapor barrier guide.

Why Chewelah owners call Raven

• Concrete is our core trade: our own crew forms, pours and finishes. See our concrete flatwork services
• North-country experience: we also pour in Colville, Deer Park and Newport
• City or county: we sort out which office governs your parcel and your driveway before we quote

Get a Chewelah concrete quote

Call 509-350-2016 or request a free quote with your project, rough size and address or parcel number.

Sources

• Patio pricing: Raven Buildings' current rates
• City of Chewelah Building Department
• City of Chewelah Street Obstruction Permit Application (PDF)
• City of Chewelah Building Permit Application (PDF)
• Stevens County Building Division
• Stevens County Public Works: Approach Permit
• Stevens County Road Approach Permit General Provisions (PDF)
• Stevens County Building Code Ordinance 02-1984 (frost depth)
• City of Colville Building/Planning FAQs (design criteria)
• 2021 Washington Residential Code, Chapter 4 Foundations (Table R402.2)
• ACI 332-20, Code Requirements for Residential Concrete (preview)
• Carolinas Ready Mixed Concrete Association, deicer scaling resistance and ACI 332-20
• ACI 306R-16, Guide to Cold Weather Concreting (preview)