Adding on to a driveway or patio is one of our most common residential jobs. Here are three San Antonio projects from 2021.
Location
San Antonio, TX
Dates
June, August & December 2021
Concrete
3000 PSI, 4–5 in. thick
Reinforcement
3/8 in. rebar @ 12 in. OCEW, doweled
Finish
Broom
Patio, driveway add-on and sidewalk, August 2021
Over two days we poured a back patio, a driveway add-on and a sidewalk: 3000 PSI concrete, 4 inches thick, with 3/8-inch rebar at 12 inches each way, doweled into the existing concrete.
Patio with perimeter beam plus driveway extension, June 2021
For this back patio add-on we poured 5-inch concrete with a perimeter toe beam 12 inches deep by 8 inches wide. We also poured a 4-inch driveway extension, both reinforced at 12 inches each way.
Driveway and patio addition, December 2021
We added on to the driveway and back patio with 3/8-inch rebar at 12 inches each way and 4-inch, 3000 PSI concrete.
Why doweling matters
When new concrete meets old, we drill into the existing slab and set rebar dowels. That keeps the two slabs from shifting apart and cracking at the joint.
In October 2021 we tore out a worn pool deck and poured a new one.
Date
October 11, 2021
Concrete
3000 PSI, 4 in. thick
Reinforcement
6-gauge wire mesh
Finish
Broom
Remove existing deck without damaging the pool
Prep base and place 6-gauge wire mesh
Pour 3000 PSI concrete, 4 inches thick
Broom finish for wet-foot traction
Pool decks get wet, sun-baked and hosed down all the time. Getting slopes away from the pool and a slip-resistant finish matters as much as strength. Request a quote.
The homeowner wanted to grow a 20 × 20 ft patio into a 35 × 45 ft space for an outdoor kitchen and gazebo. The job had plenty of challenges.
Before
20 × 20 ft
After
35 × 45 ft
Dowels
1/2 in. rebar @ 12 in.
Extras
Moisture barrier, tree and root removal
Matching an aggressive pitch
The existing slab had a steep pitch to shed water from the house. The new concrete had to match that grade where it met the old slab, then level out with less pitch toward the back.
Trees and roots
Several large trees came out, along with the stumps and huge bundles of oak roots. Removing vegetation is the only way to get a solid base to build on.
Soil and moisture
The topsoil was runoff from the property uphill, so we compacted it thoroughly. Because the area sees moving water and long periods of moisture, we added a moisture barrier to protect the outdoor kitchen from mold problems.
A solid connection
We drilled into the existing concrete and doweled in 1/2-inch rebar every 12 inches so the old and new slabs act as one.
This front porch expansion combines stone, brick and concrete for a finished look that matches the house.
Scope
Front porch expansion
Materials
Stone, brick, concrete
We can widen or lengthen driveways, sidewalks, patios and porches. Compare the steps different contractors include, from base prep and doweling to reinforcement and finish, and you’ll see why customers choose 1,2,3 Concrete.
