Structures for sewer, storm, septic and site work.
Every family below is produced at our Grand Rapids plant and built to the exact job print — standard municipal details or fully custom.
All our products are manufactured right here in West Michigan to the exact job specification. Our plant facility, production, processes and quality control systems demonstrate our commitment to product excellence. Grand Valley Concrete Products consistently delivers a top quality, precast concrete product, at a fair market price – when it is needed – time and time again! In fact, our manufacturing practices allow Grand Valley Concrete Products to respond to last minute job changes or inventory adjustment often within 24 hours giving our customers an extreme amount of true on-site, on-demand flexibility.
CATCH BASIN
GRAND VALLEY CONCRETE
CATCH BASIN
- 48" DIA.
- Catch Basin With Flat Top
STORM STRUCTURES
48″ DIA. Catch Basin With Flat Top
CONE AND CONE TOP
GRAND VALLEY CONCRETE
CONE AND CONE TOP
- 48" DIA.
- Doghouse Manhole With Cone
- 60" DIA.
- Manholes With Reducer Cone & Cone Top
- 72" DIA.
- Manholes With Reducer Cone and Cone Top
- Standard
- Standard Cones
Flat Tops, Cones & Reducers
48″ DIA. Doghouse Manhole With Cone
Flat Tops, Cones & Reducers
60″ DIA. Manholes With Reducer Cone & Cone Top
Flat Tops, Cones & Reducers
72″ DIA Manholes With Reducer Cone and Cone Top
Flat Tops, Cones & Reducers
Standard Cones
LEECHING MANHOLES
LEECHING MANHOLES
GRAND VALLEY CONCRETE
LEECHING MANHOLES
- 48" DIA.
- Leeching Manhole
- 60" DIA.
- Leeching Manholes With Flat Top
- 72" DIA.
- Leeching Manholes With Flat Top
LEECHING MANHOLES
48″ DIA. Leeching Manhole
Flat Tops, Cones & Reducers
60″ DIA. Leeching Manholes With Flat Top
Flat Tops, Cones & Reducers
72″ DIA. Leeching Manhole With Flat Top
PRECAST SANITARY MANHOLES
GRAND VALLEY CONCRETE
PRECAST SANITARY MANHOLES
- 48" DIA.
- Sanitary Manhole With Flow Channel & Standard Base
- 48" DIA.
- Sanitary Manhole With Internal Base
- 48" DIA.
- Sanitary Manhole With Precast Drop & Internal Base
- 60" DIA.
- Sanitary Manhole With Standard Base and Flat Top
- 72" DIA.
- Sanitary Manhole With INT. Base and Flat Top
- 84" DIA.
- Sanitary Manhole With Reducing Top
- 84" DIA.
- Sanitary Manhole With INT. Base and Flat Top
- 96" DIA.
- Sanitary Manhole With INT. Base and Flat Top
- 96" DIA.
- Sanitary Manhole With Reducing Flat Top
- 120" DIA.
- Sanitary Manhole With Reducing Flat Top
- 120" DIA.
- Sanitary Manhole With INT. Base and Flat Top
SANITARY MANHOLES
48″ DIA. Sanitary Manhole With Flow Channel & Standard Base
SANITARY MANHOLES
48″ DIA. Sanitary Manhole With Internal Base
SANITARY MANHOLES
48″ DIA. Sanitary Manhole With Precast Drop & Internal Base
Flat Tops, Cones & Reducers
60″ DIA. Sanitary Manhole With Standard Base and Flat Top
Flat Tops, Cones & Reducers
72″ DIA. Sanitary Manhole With INT. Base and Flat Top
SANITARY MANHOLES
84″ DIA. Sanitary Manhole With Reducing Top
Flat Tops, Cones & Reducers
84″ DIA. Sanitary Manhole With INT. Base and Flat Top
Flat Tops, Cones & Reducers
96″ DIA. Sanitary Manhole With INT. Base and Flat Top
Flat Tops, Cones & Reducers
96″ DIA. Sanitary Manhole With Reducing Flat Top
Flat Tops, Cones & Reducers
120″ DIA. Sanitary Manhole With Reducing Flat Top
Flat Tops, Cones & Reducers
120″ DIA. Sanitary Manhole With INT. Base and Flat Top
SANITARY MANHOLE
SANITARY MANHOLES
GRAND VALLEY CONCRETE
SANITARY MANHOLE
- 48″ DIA.
- Sanitary Manhole With Flow Channel & Standard Base
- 48″ DIA.
- Sanitary Manhole With Precast Drop & Internal Base
- 48″ DIA.
- Sanitary Manhole With Internal Base
- 60″ DIA.
- Sanitary Manhole With Standard Base and Flat Top
- 72″ DIA.
- Sanitary Manhole With INT. Base and Flat Top
- 84″ DIA.
- Sanitary Manhole With INT. Base and Flat Top
- 84″ DIA.
- Sanitary Manhole With Reducing Top
- 96″ DIA.
- Sanitary Manhole With INT. Base and Flat Top
- 96″ DIA.
- Sanitary Manhole With Reducing Flat Top
- 120″ DIA.
- Sanitary Manhole With Reducing Flat Top
- 120″ DIA.
- Sanitary Manhole With INT. Base and Flat Top
MISCELLANEOUS MANHOLES
GRAND VALLEY CONCRETE
MISCELLANEOUS MANHOLES
- Miscellaneous Manhole 1
- Adjusting Ring Sizes, Blocks & Bricks
- Miscellaneous Manhole 2
- Adjusting Ring Sizes & Valve Box Case
MISCELLANEOUS MANHOLE PRODUCTS
Miscellaneous Manhole 1
MISCELLANEOUS MANHOLE PRODUCTS
Miscellaneous Manhole 2
FLAT TOPS, CONES & REDUCERS
Flat Tops, Cones & Reducers
GRAND VALLEY CONCRETE
FLAT TOPS, CONES & REDUCERS
- 48″ DIA.
- Catch Basin With Flat Top
- 48″ DIA.
- Manhole Flat Tops
- 60″ DIA.
- Leeching Manholes With Flat Top
- 60″ DIA.
- Manhole Flat Tops
- 60″ DIA.
- Manholes With Reducer Cone & Cone Top
- 60″ DIA.
- Manholes With Reducing Flat Top
- 60″ DIA.
- Sanitary Manhole With Standard Base and Flat Top
- 72″ DIA.
- Manholes With Reducer Cone and Cone Top
- 72″ DIA.
- Leeching Manhole With Flat Top
- 72″ DIA.
- Sanitary Manhole With INT. Base and Flat Top
- 72″ DIA.
- Manholes With Reducing Flat Top
- 84″ DIA.
- Manhole Flat Top
- 84″ DIA.
- Sanitary Manhole With INT. Base and Flat Top
- 84″ DIA.
- Sanitary Manhole With Reducing Top
- 96″ DIA.
- Manhole Flat Top
- 96″ DIA.
- Sanitary Manhole With INT. Base and Flat Top
- 96″ DIA.
- Sanitary Manhole With Reducing Flat Top
- 120″ DIA.
- Sanitary Manhole With Reducing Flat Top
- 120″ DIA.
- Manhole Flat Top
- 120″ DIA.
- Sanitary Manhole With INT. Base and Flat Top
Flat Tops, Cones & Reducers
48″ DIA. Manhole Flat Tops
Flat Tops, Cones & Reducers
60″ DIA. Manhole Flat Tops
Flat Tops, Cones & Reducers
60″ DIA. Manholes With Reducing Flat Top
Flat Tops, Cones & Reducers
72″ Manholes With Reducing Flat Top
Flat Tops, Cones & Reducers
84″ DIA. Manhole Flat Top
Flat Tops, Cones & Reducers
96″ DIA. Manhole Flat Top
Flat Tops, Cones & Reducers
120″ DIA. Manhole Flat Top
REFERENCE & INSTALLATION
REFERENCE & INSTALLATION
GRAND VALLEY CONCRETE
REFERENCE & INSTALLATION
- Maximum Pipe Sizes
- Maximum Pipe Sizes Per Manhole DIA.
- Slab Detail
- Typical Manhole Base Slab Detail
- Installation of Gaskets
- Reference
- Manhole Weight
- Weight & Capacity Chart
- Maximum Pipe Sizes
- Maximum Pipe Sizes Per Manhole DIA.
- Miscellaneous Manhole 1
- Adjusting Ring Sizes, Blocks & Bricks
- Miscellaneous Manhole 2
- Adjusting Ring Sizes & Valve Box Case
REFERENCE & INSTALLATION
Installation of Gaskets
REFERENCE & INSTALLATION
Manhole Weight and Capacity Chart
REFERENCE & INSTALLATION
Maximum Pipe Sizes Per Manhole DIA.
SANITARY & STORM MANHOLES · DRAWING MH-48-01
Maximum Pipe Sizes Per Manhole DIA.
Precast base and riser sections with a cast-in-place invert. Depths to 30 feet.
REFERENCE & INSTALLATION
Typical Manhole Base Slab Detail
Delivering concrete solutions – every time – all the time. That’s just the way we work!
Grand Valley Concrete Products.
Also stocked and produced: manhole joint wrap, manhole block, adjusting rings, castings and light pole bases. If it isn’t listed, ask — most specials are routine here.
Ready to price your job?
Send the print — we’ll come back with pricing and lead time.
Grand valley concrete · cone & cone top/reducing flat top
Grand valley concrete · Septic tank set on site
Grand valley concrete · Cast to print



