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3312 LeMone Industrial Blvd., Columbia, MO 65201
30601 Highway 5, Marceline, MO 64658
900 SW Oldham Pkwy #203, Lee’s Summit, MO 64081
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Project Portfolio
Forensic and Investigative Engineering
Title
Roof Evaluation- Hail Damage
Roof Evaluation- Hail Damage
Roof Evaluation- Wind Damage
Roof Evaluation- Wind Damage
Commercial Roof-Wind Damage
Commercial Roof-Wind Damage
Residential Basement Wall Collapse
Residential Basement Wall Collapse
House Fire-Electrical Caused Fire
House Fire-Electrical Caused Fire
House Fire-Electrical Caused Fire
House Fire-Electrical Caused Fire
Geotechnical Engineering
Title
MISSOURI UNITED METHODIST CHURCH ADDITION
MISSOURI UNITED METHODIST CHURCH ADDITION

Subsurface exploration for this building addition in downtown Columbia, Missouri encountered low strength alluvial soil deposits over Pennsylvanian claystone. Settlement estimates indicated spread footing support was not feasible and removal and replacement was not cost effective nor considered practical in this highly trafficked area. Allstate Consultants recommended the building be supported on drilled shafts socketed into the underlying claystone and followed through with construction observation services during drilled shaft installation.

VANDIVER DRIVE EXTENSION
VANDIVER DRIVE EXTENSION

Located in northeast Columbia, the Vandiver Drive Extension consisted of the analysis and design of two multi-lane roundabouts that eliminated the need for a major creek crossing. VISSIM analysis was performed for numerous scenarios to ensure this innovative project would function as intended. The project also included accommodations for bicycle and pedestrian traffic as well as extensive phased construction and traffic control plans. The St. Louis section of the American Society of Civil Engineers selected the Vandiver Drive Extension as its 2010 Project of the Year.

CITY OF MILAN WASTEWATER TREATMENT PLANT
CITY OF MILAN WASTEWATER TREATMENT PLANT

The City of Milan, Missouri’s wastewater treatment plant included two new sequencing batch reactors, a headworks, clarifiers, sludge handling and an operations building. The project included placement of 10 to 12 feet of compacted fill to raise the plant up out of the floodplain. Exploration indicated the fills would induce several inches of settlement due to consolidation of the underlying compressible alluvial soils. Plans were developed to surcharge the compacted fills with temporary earth fill to accelerate settlement in advance of plant construction. The process included monitoring with settlement plates and allowed plant structures to be supported on economical mat foundations. No deep foundations were required. Allstate Consultants performed the geotechnical investigation and construction testing and monitoring.

CITY OF MARCELINE OLD EAST RESERVOIR SPILLWAY AND DAM REPAIRS
CITY OF MARCELINE OLD EAST RESERVOIR SPILLWAY AND DAM REPAIRS

The City of Marceline, Missouri’s Old East Reservoir spillway was severely eroded from prolonged high water and the dam was threatened in 2008. With FEMA funding, a subsurface exploration was performed after spillway flows decreased; a geotechnical report was developed and a new spillway with an internal drainage system and anchored stilling basin was designed. Staged cofferdams and a diversion channel were incorporated to remove the old spillway from service so that the new reinforced concrete spillway could be constructed under dry conditions. And old pump station sited in the earth dam was removed and relocated and the embankment was repaired. Allstate performed the geotechnical investigation and design work as well as the construction administration, observation and testing.

LENOIR WOODS RETIREMENT FACILITY
LENOIR WOODS RETIREMENT FACILITY

Subsurface exploration for the Assisted Living, Memory Care, Independent Living and Skilled Nursing Facilities in Columbia, Missouri encountered expansive clay soils that had been depleted of moisture in areas near mature trees. Allstate Consultants explored the proposed sites with soil borings and performed swell tests on recovered samples to characterize the site soils. Variable and significant swell potentials indicated the need for soil remediation. Allstate recommended several options and the Owner selected removal and replacement with moisture conditioned, controlled compacted fill. Lifts of lean clay fill were watered, blended with a disc and compacted with a sheepsfoot roller. Following soil remediation, buildings were constructed on spread footings and floor slabs on low volume change zones. Allstate followed through with soil and concrete observation and testing services during construction.

CITY OF HUNTSVILLE WASTEWATER STORAGE LAGOON
CITY OF HUNTSVILLE WASTEWATER STORAGE LAGOON

The City of Huntsville, Missouri’s new wastewater storage lagoon for a no point discharge land application system will consist of an earthen cell having a surface area of 7.5 acres; an operating depth ranging from 3 to 13 feet and earth berms requiring as much as 25 feet of compacted fill. Allstate Consultants performed a subsurface exploration with test borings and developed a laboratory testing program. Triaxial shear and hydraulic conductivity tests were performed on site soils to aid in evaluating the stability of earth slopes and in designing the clay liner to meet Missouri Department of Natural Resources requirements for permeability. Allstate’s geotechnical report included boring logs, geologic cross sections, laboratory test results, slope stability analyses and recommendations for design of earthwork and the clay lining system.

COLUMBIA SANITARY LANDFILL ADMINISTRATION, MAINTENANCE AND VEHICLE STORAGE FACILITIES
COLUMBIA SANITARY LANDFILL ADMINISTRATION, MAINTENANCE AND VEHICLE STORAGE FACILITIES

Sited in an area where coal strip mines are common, subsurface exploration for this seven building complex encountered a very thin mantle of compost and miscellaneous fill over medium to stiff native alluvial and colluvial soil deposits and underlying Pennsylvanian claystone. Boreholes were grouted on completion with bentonite slurry and abandoned in accordance with Missouri DNR Well Protection Rules. Consolidation testing in Allstate’s Columbia laboratory indicated the medium consistency clays would not result in significant settlement making spread footings bearing on native soils or moisture conditioned, controlled compacted fill, feasible. Swell testing in our laboratory also indicated a relatively low swell potential making floor slab support feasible on nominal low volume change zones. Geogrid reinforced pavements were also recommended to strengthen support and reduce the pavement sections.

BASS PRO SHOPS AND CENTERSTATE
BASS PRO SHOPS AND CENTERSTATE

Bass Pro Shops is part of the 90 acre Centerstate development in Columbia, Missouri. The Centerstate project also included Furniture Row, Lone Star, Ruby Tuesday, Hilton Garden Inn, retail shops and streets as well as a US Highway 63 overpass and interchange. Controlled mass grading for buildings involved over 500,000 cubic yards of earthwork with compacted fills that were up to 35 feet thick at the Bass Pro Shops site. Fills were surcharged to accelerate settlements prior to Bass Pro Shops construction and economical spread footings were used for support. During mass grading, a depression era dam was rehabilitated and a 6 acre deposit of water bearing glacial sand was drained using a system of subsurface drains installed with a specialized Hollandrain trencher. Allstate Consultants staff members performed the geotechnical investigations and construction testing for the Bass Pro Shops and Centerstate development.

ASHLEY FURNITURE STORE
ASHLEY FURNITURE STORE

Subsurface exploration for this concrete tilt-up building in Columbia, Missouri encountered stiff glacial clay soils with shallow water bearing silt and sand lenses. To avoid extending foundation excavations into the water bearing deposits, it was recommended the floor elevation be raised some 4 feet. This allowed shallow spread footings to be feasible for building support and a slab on grade to be used on a nominal low volume change zone. Insulated and reinforced concrete tilt-up wall panel construction was utilized. Allstate followed our geotechnical investigation with soil and concrete testing throughout the construction stage.

Transportation Engineering
Title
Vandiver Drive Extension
Vandiver Drive Extension

Located in northeast Columbia, the Vandiver Drive Extension consisted of the analysis and design of two multi-lane roundabouts that eliminated the need for a major creek crossing. VISSIM analysis was performed for numerous scenarios to ensure this innovative project would function as intended. The project also included accommodations for bicycle and pedestrian traffic as well as extensive phased construction and traffic control plans. The St. Louis section of the American Society of Civil Engineers selected the Vandiver Drive Extension as its 2010 Project of the Year.

Route K/Scott Boulevard Intersection
Route K/Scott Boulevard Intersection

Located in southwest Columbia, Route K/Scott Boulevard intersection project included the design of turn lanes on Route K, site distance improvements, and accommodations for future signalization. This project was a joint venture between MoDOT, Boone County, the City of Columbia, and a private developer.

Meyer Industrial Drive
Meyer Industrial Drive

The Meyer Industrial Drive project connected the City of Columbia and the Columbia Regional airport via an updated Highway 63 outer road system as well as provided roadway infrastructure for existing and proposed industrial uses. This project included roadway design with extensive phased traffic control as well as coordination with 4 separate private land owners, Boone County, and MoDOT.

US 50/Oak Grove Lane/West Main Street
US 50/Oak Grove Lane/West Main Street

Located on the west side of Sedalia, MO, the intersection of US 50/Oak Grove Lane/West Main Street presented challenging geometry and operational issues.  Using SYNCHRO analysis, Allstate worked with the City of Sedalia and Menard’s to prepare a traffic impact study and design a series of phased improvements to accommodate a proposed 70 acre development and improve the geometrics and operation of existing infrastructure.

Waco Road Extension
Waco Road Extension

Located just north of Columbia, the Waco Road Extension consisted of approximately 1 mile of arterial roadway design (including two way left turn lanes, sidewalks, and bicycle lanes) and two roundabouts. The project included bio-retention facilities and a large box culvert designed to accommodate Bear Creek and a future trail connection. This extension will provide an arterial connection between the Route B industrial corridor, Alpha Hart Lewis Elementary School, the Boone County Fairgrounds, and US Highway 63.

Structural Engineering
Title
Branson Recreation Center – Branson, Missouri
Branson Recreation Center – Branson, Missouri

A partial two-story, 44,200 square foot recreation center with two gymnasiums, a fitness center, locker rooms, three-lane indoor elevated track, community rooms, a concession area, and ancillary buildings. Typical construction at the main building consisted of a steel super structure, concrete floors over metal deck, and the roof was framed in a metal deck over steel joists. Ancillary buildings were constructed with load bearing CMU walls and wood truss roofs.

Jefferson City Public School – Pioneer Trail Elementary School – Jefferson City, Missouri
Jefferson City Public School – Pioneer Trail Elementary School – Jefferson City, Missouri

Single-story 68,400 square foot classroom, gymnasium, library and multi-purpose building.Construction consisted of load-bearing CMU walls that support the exposed steel joists at isolated locations. The classroom pods were framed in wood trusses.

Linn State Technical College Activity Center, Includes FEMA Shelter – Linn, Missouri
Linn State Technical College Activity Center, Includes FEMA Shelter – Linn, Missouri

An activity center with a three court gymnasium, hung track, fitness center and support office space (71,000 square feet). The basement features a 19,000 square foot FEMA 361 community safe room. Construction featured steel roof trusses supported by structural steel and masonry walls.

Etta and Joseph Miller Performing Arts Center – Jefferson City, Missouri
Etta and Joseph Miller Performing Arts Center – Jefferson City, Missouri

A 2 1/2 story, 3,800 square foot front lobby addition as well as extensive modifications to the existing stage, pit area, and fly loft framing. Construction featured unique suspended concrete balconies. Exposed structural steel frames support the exterior glazing.

Comfort Suites Hotel – Columbia, Missouri
Comfort Suites Hotel – Columbia, Missouri

A 24,000 square foot, four story building, constructed with wood stud walls and framing. Floors consisted of lightweight gpycrete over wood sheathing. Structural steel was used to support the large front canopy.

Riley Toyota – Jefferson City, Missouri
Riley Toyota – Jefferson City, Missouri

A 2-story volume, 35,000 square foot new building with a 3,300 square foot partial second floor and mezzanine. CMU walls supported the rear portion of the structure. Steel moment frames supported the roof at the front of the structure as well as the exterior curtain walls.

Mexico YMCA Gym Building Addition & Renovation – Mexico, Missouri
Mexico YMCA Gym Building Addition & Renovation – Mexico, Missouri

A 26,000 square foot addition that included a large gymnasium and suspended track as well as extensive modifications to the existing structure. Exterior walls were built with tilt-up concrete panels and the roof was framed with steel joists with an acoustical metal deck.

Flat Branch Pedestrian Bridge – Columbia, Missouri
Flat Branch Pedestrian Bridge – Columbia, Missouri

Cable suspended pedestrian bridge at Flat Branch Park. Construction consisted of a steel structure with a concrete deck and concrete abutments with stone veneer.

Civil Engineering
Title
Brookfield Wastewater Treatment Facility – under construction
Brookfield Wastewater Treatment Facility – under construction

Construction on-going in 2015

1500 GPM Booster Pump Station
1500 GPM Booster Pump Station

The pump station was constructed in 2013 with efficient pumps and automatic controls to replace an old pumping station. Vertical turbine pumps transfer raw water from the City Reservoirs to the City Lake, and it can also pump directly to the City water treatment facility. Operation of the pump station is controlled by the City’s existing SCADA system and has provided the operators much flexibility for supplying raw water to the water treatment facilities.

Aerator and Carbon Feed Basin
Aerator and Carbon Feed Basin

The induced draft aerator and concrete basin are part of the water treatment facility improvements completed in 2010. This system allowed the City of Brookfield to maintain compliance with the disinfection by-product regulations. Improvements consisted of an induced draft aerator, chemical mixing/contact basin, new chemical feed system including powdered activated carbon feed facility, and SCADA system improvements. Volatile Organic Carbon (VOC) removal occurs with the induced draft aerator and is followed with a chemical mixing and contact basin where powdered activated carbon can be fed into the water stream. The water then flows into a primary and a secondary rapid mix and settling basins prior to filtration.

Water Treatment Facility
Water Treatment Facility

Water treatment facility and distribution system improvements were completed in 2013. The water treatment facility is an excess lime soften plant with 3 wells and currently operates at 250 gpm with a filtering capacity of 500 gpm. The improvements consisted of a new elevated finished water storage reservoir, water transmission mains, water supply well, induced draft aerator, chemical feed system, disinfection with chloramines, on-line laboratory testing, and SCADA system. The improvements help the District provide more water for the increasing user demand and comply with more stringent regulations.

City of Barnard Water Tank
City of Barnard Water Tank

The City of Barnard had a small elevated finished water storage tank that had become outdated. The pedestal style tank and water main piping allowed the City to maintain better water service to their customers. The height of the new tank was elevated above the old tank which allowed higher and more consistent water pressure to the water customers. The City’s water supply wells and water plant were in poor condition and the new elevated tank allowed the City to purchase water from the adjacent water district allowing the City to abandon their water treatment facilities.

Locust Creek Raw Water Pump Station
Locust Creek Raw Water Pump Station
SBR Type Wastewater Treatment Facility
SBR Type Wastewater Treatment Facility