Precast Box Culverts
- Precast box culverts are available in 3 to 12 feet spans and rises. Standard box section length is 6 to 8 feet.
- Single and multi-barrel precast box units are available.
- Precast headwalls and wingwalls are available for box end treatment.
- Joints are typically tongue and groove for packing mastic joint compound, butyl gaskets or mortar to meet ASHTO M198.
- A large assortment of fittings are available including manhole and lateral tees, elbows, wyes, reducers, battered and skewed ends, adapters, caps/plugs, etc..
- A variety of linings and coatings are available if required by project conditions.
- Standard ASTM C789 (AASHTO M259), C850 (AASHTO M273) and PS62 box culvert designs as well as specialized designs and geometry.
- Special designs available for deep fills, jacking special loads, etc..
Typical Applications Include
- All fill ranges and live load conditions
- Open trench, embankment or trenchless installation
- As an alternative for multi-barrel circular pipe
- Ideal for low cover conditions with large flow
- Good replacement for open channels and ditches
- Storm drains and culverts
- Short span highway bridges
- Pedestrian, live stock, golf cart tunnels
- Underground stormwater runoff retention
- Groundwater recharge and sand filter systems
- Utility tunnels
3-Sided Bridges and Culverts
Three‑sided, flat‑decked rectilinear precast units placed segmentally onto a concrete foundation can be used to form a bridge. The units are tied together by grouted keyways preformed into the foundation and between units, or mechanically by lateral ties of post-tensioning strands or rods.
Most three‑sided bridge systems offer clear span units from 6 to 42 feet coupled with vertical clearances from 2 to 14 feet. This flexibility, coupled with the ability to cast skew angles up to 45 degrees, transitional and radial shapes, allows for a wide range of opening configurations. All of this ‑ and more ‑ allows for a completely precast project that is quick and efficient!
Typical Applications Include
- Conventional bridge construction and replacement
- Multiple cell installations for longer spans
- Underground storm water detention structures
- Tunnels
- Most three sided bridge systems meet or exceed the following: AASHTO Specifications ACI Codes Variable Earth Dead Loads HS20, HS25, Alternate Military Live Loads
Retaining & Sound Barrier Walls
Whether building a support wall for new construction or supporting a failing earthen slope, precast retaining walls are a quick, efficient and economic solution.
Systems offer simplicity in design, manufacturing and installation. Flat faced, all concrete “panel” type walls or concrete and earth combination “crib” walls insure permanent quality!
Typical Applications Include
- Gravity Type Retaining Walls
- Rock Revetment Walls
- Free Standing Noise Barrier Walls
- Highways
- Parking Lots
- Storage Bins
- Truck Dumps
Precast Products for Storm Water Management
Environmental concerns have become a hot topic in recent years. Precast products can help alleviate many
Typical Applications Include
- Erosion control mats and blocks – flexible and permeable
- Energy dissipators – retain and retard water, allow flow control
- Storm water management vaults – underground storage
Miscellaneous Precast Products
Precast Concrete Products are available in a variety of shapes and sizes, and perform many tasks.
• Median Barriers
• Right of Way Markers
• Parking Bumpers
• Cattle Guards
• Fences & Building Panels
• Feed & Water Troughs
Reinforced Concrete Pipe
Reinforced concrete pipe is available in diameters of 12″ to 144. Standard pipe length is 8 feet. Longer lengths are available. Standard and heavy wall thickness are available. Joints can be tongue and groove, confined o ring, single offset with profile gasket, steel end ring and double o ring gasket joints with air test ports. Joints meet ASHTO M198, ASTM 0443 and 0361, and US Bureau of Reclamation. A large assortment of fittings
TYPICAL APPLICATIONS INCLUDE:
- Open trench, embankment or trenchless installation
- Trunk sewers and storm and sanitary sewer outfalls
- Treatment plant piping, utility tunnels and tunnel liner
- Storm drains, culverts and sanitary sewers
- All fill ranges and live load conditions
- Underwater stormwater runoff retention
- Impoundment overflow conduits
- Irrigation distribution systems
Elliptical Concrete Pipe
Elliptical concrete pipe is available in equivalent circular diameters of 18 (14×23) through 144 (116×180) inches. Orientation may be horizontal elliptical or vertical elliptical. Standard pipe length is 6 to 8 feet. Standard wall thickness
TYPICAL APPLICATIONS INCLUDE:
- Horizontal elliptical for greater capacity @ shallow flow and fill Vertical elliptical for higher flushing velocity @ low
flows - Storm drains, culverts and sanitary sewers
- Underground stormwater runoff retention
- Groundwater recharge systems
- Pedestrian tunnels (vertical elliptical)
VDOT Inlet Structures
VDOT Inlet Structures are available for almost any type of storm drain situation. The inlets are designed as top units, which are compatible with other precast manhole components. The combination of these top units with other standard precast manhole components can meet the requirements of almost any situation. These inlets are manufactured in accordance with VDOT standards and specifications. Below are brief descriptions of these inlet structures.
DI 1
• Grated Drop Inlet
• Load Carrying Grate
DI 2
• Curb/Grated Drop Inlet
• Load Carrying Grate
• Available with A or B Nosing for use with all VDOT curb and gutter standards.
• Throat lengths available to 20 foot per VDOT standard sizes.
DI 3/4
• Curb Drop Inlet
• Available with A or B Nosing for use with all VDOT curb and gutter standards.
• Throat lengths available to
20 foot per VDOT standard sizes.
DI 5
• Ditch Drop Inlet
• Various slopes available.
• Various grates available.
DI 7
• Grated Drop Inlet
• Various grates available.
DI 10
• Median Barrier Grated Drop Inlet
• Load Carrying Grate.
• Inlet can be provided to accommodate one or both sides of
DI 11
• Ditch Drop Inlet
• Various grates available.
VDOT Endwalls
VDOT Endwalls are available for all types of pipe up to 84″ diameter. These
Product Descriptions
EW-1, EW-1A, EW-1S
Straight Endwall for Pipe Culverts
– Accommodates pipe sizes through 36” (Round) or 53” x 34” (Elliptical)
– Straight or Skewed Connection Available
EW-2, EW-2A, EW-2S
Winged Endwall for Pipe Culverts
– Accommodates pipe sizes 42” through 96” (Round) or 60” x 38” through 106” x 68” (Elliptical)
– Straight or Skewed Connection Available
EW-6, EW-6S
Straight Endwall for Multiple Pipe Culverts
– Accommodates pipe sizes through 36”
– Straight or Skewed Connection Available
EW-7, EW-7S
Winged Endwall for Multiple Pipe Culverts
– Accommodates pipe sizes 42” through 96”
– Straight or Skewed Connection Available
EW-9
Straight Endwall for Pipe Arches
– Accommodates arch pipe sizes through 38” (Rise)
EW-10
Straight Endwall for Multiple Pipe Arches
– Accommodates arch pipe sizes through 38” (Rise)
EW-11
Sloped Endwall for Pipe Culverts
– Furnished with load-carrying pipe grate(s)
– Accommodates pipe sizes through 60”
– Available in 3:1, 4:1 and 6:1 slope
EW-12
Sloped Endwall for Pipe Underdrain
– Furnished with rodent barrier screens
– Accommodates pipe sizes through 8”
– Available in 2:1 and 4:1 slope