Why concrete flatwork is needed in Crows Landing
Most of the community has no kerb, no gutter, no walk and no street light. The county's study of its unincorporated communities says exactly that, and adds that there is no storm drainage system at all: drainage is mainly roadside percolation, with no pipelines and no detention ponds. So the pedestrian surface here is whatever an owner has built on their own ground, and the first job on any property is to establish what exists between the road edge and the door before anything is priced.
Two homes in five here already need work, and the concrete in front of them is the same age. With 41 percent of its housing units in need of rehabilitation, Crows Landing ranked sixth among the county's unincorporated communities on that measure. The census estimate puts 52 units at 1939 or earlier, 43 in the 1940s and 33 in the 1950s, with nothing recorded for the 1960s or 1970s. Walks and approaches from those decades are thin, narrow and jointed for a lighter world than the one crossing them.
The shopfront strip is one side of a two-lane highway. The commercial area lies on the west side of Highway 33 and along 5th Street from between G and H Streets to the highway, serving the town and the farms around it; a typical parcel is 3,750 square feet with a 625 square foot building fronting the road. Highway 33 runs 3,750 to 6,000 vehicles a day through town, and Streets and Highways Code 5610 puts the duty for any walk that does exist on the fronting owner.
The heaviest concrete in the area went down for nuts, not for people. On the north side of Crows Landing Road between the highway and Armstrong Road, four prefabricated steel walnut storage buildings, 80,300 square feet of them, stand on concrete pads on an orchard parcel, taking 10 to 12 truckloads a day from September to March, with storm drainage retained on the rest of the parcel. Cutting a pad like that out is silica work, and Title 8 section 1532.3 governs how it is done.
The ground is clay loam, and the county may ask for a soils test at permit. At the parcel on West 5th Street at Fink Road the survey gives Vernalis clay loam and Zacharias clay loam on slopes of 0 to 2 percent, and the county's own review noted that a soils test may be required at building permit, with the whole county in a high seismic design category and landslides unlikely on flat ground. What is under a slab is therefore a question answered for the parcel, not for the town.
The 2010 Census counted 355 residents in 143 housing units, and the 2020 count came to 322 people. A place that small has one commercial strip, one school and one civic block, which is where nearly all of its walked concrete sits.
Concrete flatwork, as delivered in Crows Landing
Crows Landing is 20 road miles from the Modesto base, on Highway 33, a two-lane undivided road with a four-way stop at Fink Road; Interstate 5 is three miles west. Levels and photographs stay as one record.
The request names the parcel and the concrete on it: an apron, a path, a step at a door, a cracked pad or a settled slab. The contractor assigned to it then measures the running and cross slopes, the change in level at each joint, the rise of any step and the landing beyond it. Site visit scheduled at a time that suits you. Start date set in the written estimate.
Crows Landing is unincorporated, so the permit comes from the Stanislaus County Building Permits Division at 1010 10th Street, Suite 3400 in Modesto, which runs the county's one-stop shop with Planning, Environmental Resources, Public Works and the Fire Warden's Office reviewing, and handles floodplain administration itself.
Barricades and lights are the contractor's cost wherever the public reaches the work off the highway or a 5th Street frontage, and any route in use stays open.
Saws feed water continuously, grinders take dust collection, nothing is swept dry, and a competent person inspects under a written plan.
Forms are set to finished geometry rather than to the old surface: a walk at 1:20 or flatter with 1:48 across, a ramp run at 1:12 at most, flares at 1:10, a landing 48 inches long and level. Where there is no kerb, the fall is set to the roadside ground that has to take the water.
Pours are protected when nights reach 40 degrees and cured against fast set in a summer that normally tops 100 degrees.
The finished slopes, widths, landings and edges are measured and photographed beside the values they had to meet, and the owner keeps the record of corrections with the date each was completed.
Where concrete flatwork is needed in Crows Landing
Crows Landing is a small grid beside a highway, a landfill road and a former airfield, and each end of it works its concrete differently.
Highway 33 and the 5th Street commercial strip
The commercial area sits on the west side of the highway and along 5th Street toward it, serving the town and the farms. A typical parcel is 3,750 square feet with a 625 square foot building at the road, so the whole pedestrian route is a short apron between the highway edge and a door.
Packing sheds and warehouses along Highway 33 and the Union Pacific
Many agricultural warehouses and packing sheds line the highway and the tracks the town moved beside in 1888, with zoning through these blocks running from general commercial to limited industrial and rural residential. Dock edges and apron joints here take repeated trailer loads.
G Street civic block
The fire station on G Street holds two apparatus, the community services district meets in its conference room, and a June 2021 clean-up put dumpsters at 22001 G Street. Civic frontages of that kind are where the walk, the parking and the entrance all have to line up.
West 5th Street, I Street and Fink Road
The church at West 5th and Fink was built in 1893, predates the 1974 rural residential zoning and stands on Vernalis and Zacharias clay loams, with homes on three sides and farmland across the road. An 1893 entrance and a modern accessible route are two different pieces of geometry.
Bonita Avenue, Bonita Elementary and Bonita Park and Pool
The town's elementary school sits here, with a one-acre park and pool across the street at the north-western edge; the pool was closed pending repairs in 2015. A school and a park together make this the most used pedestrian ground in the community.
4th Street well sites
The community services district has proposed a replacement well on 4th Street and, with the county, a new pump motor, motor control centre and telemetry for it. Well sites bring vaults, access pads and valve covers into the surface, each one a change in level to be set flush.
East side: E Street, Armstrong Road and East 5th Street
The community's north-east boundary runs along E Street and Armstrong Road, and the plan map shows the main canal crossing the area. Four walnut storage buildings totalling 80,300 square feet stand on concrete pads on an orchard parcel here, with storm drainage retained on the rest of the land.
Highway 33 and the Fink Road junction
The town's main crossroads, a four-way stop on a two-lane highway that the general plan classifies as a future four-lane expressway along with Fink Road. Highway 33 carries 6,000 vehicles a day on the back leg, and turning traffic lands on the same approaches every day.
Crows Landing Industrial Business Park at the former airfield
A specific plan covering 1,528 acres of irrigated crops and two runways north-west of town, planned for about 14 million square feet of building over three phases with a public-use airport. Ground on that scale brings aprons, dock slabs and accessible routes in one programme.
Fink Road Landfill, 4000 Fink Road
The county's landfill for non-hazardous municipal solid waste, open Monday to Saturday to private citizens, businesses and agencies, with a 2020 permit that raised its design capacity and pushed its closure date out. Public-facing facilities on a site like that need a firm route from parking to the counter.
San Joaquin River and the Crows Landing Road bridge
The original landing lay east of town on the river, and the old road bridge there was found functionally obsolete and scour critical and was to be replaced by a wider structure. Approaches at a bridge replacement reset the levels of everything that joins them.
Orestimba Creek at Kilburn Road
About 2.4 miles east of town in a mapped flood zone, where the county planned to raise the road so a new bridge clears the 50-year flood. A house at 21942 Kilburn Road was built as ranch employee housing in the 1890s, with entrance levels of that era.
Concrete flatwork sub-services available in Crows Landing
Questions from Crows Landing property owners and managers
Onto the ground beside it, which is why the fall is the first decision. The county records drainage here as mainly roadside percolation, with no pipelines and no detention ponds, and most of the community lacking curbs, gutters, sidewalks and street lights. A new apron or pad is set to shed toward ground that can actually take the water, and the survey notes where the ground already ponds before the levels are chosen rather than after.
Stanislaus County. The Building Permits Division at 1010 10th Street, Suite 3400 in Modesto runs the county's one-stop shop for construction permits, with Planning, Environmental Resources, Public Works and the Fire Warden's Office reviewing, and the same division handles floodplain administration. The county requires a permit for new construction, additions, alterations, upgrades, rebuilding and remodeling alike, and the contractor the request is handed to takes it out.
At the one parcel with a published survey, at West 5th Street and Fink Road, the soils are Vernalis clay loam and Zacharias clay loam on slopes of 0 to 2 percent, and the county's review of that site noted that a soils test may be required at building permit. That is a parcel-level answer rather than a statement about the town, so what is under a particular slab is established for that lot when the scope is written.
Around the season rather than through it. The storage site on Crows Landing Road expects 10 to 12 truckloads a day from September to March, which is also the wet half of the year. That leaves the dry months for anything that needs a pad out of service, and it puts the emphasis on sequencing: a panel at a time, with the route the trucks take agreed at the site visit and written into the estimate, and the asphalt of that truck route is a job of its own.
It is. Construction work on concrete falls under the state's respirable crystalline silica standard, Title 8 section 1532.3, whose permissible exposure limit is 50 micrograms per cubic metre averaged over eight hours. In practice that is a saw with water fed continuously to the blade, grinders on water delivery or dust collection with a filter of 99 percent efficiency or better, respirators where the standard's table calls for them, no dry sweeping, a written exposure control plan and a competent person on site.
The nearest normals station, at Newman, gives 11.71 inches of rain a year with 2.66 in January, 2.23 in February and 2.14 in December, against 0.00 to 0.07 inches a month from June to September, a July normal maximum of 100.0 degrees and a December minimum of 37.8. Cold weather begins when the air falls, or is expected to fall, below 40 degrees during the protection period, and heat brings fast setting and plastic shrinkage cracking, so spring and autumn suit planned work best.
Concrete flatwork near Crows Landing
