Calvert
Calvert
This is an introduction to the products of "Calvert."
1～14 item / All 14 items
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JIS A 5372 Recommended Specification Product 'RC Box Culvert'
Products that meet the standard specifications of the National Box Culvert Association and the recommended specifications of JIS A 5372.
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PC box culvert
Precast box culverts made of prestressed concrete according to the recommended specifications of JISA 5373 by the National Box Culvert Association.
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Box culvert (Type C)
Our original box culvert
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DCJ Box Culvert "Seismic Resistant Joint Box Culvert"
A box culvert equipped with a special rubber ring at the joint section to enhance seismic performance.
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Es-Hole - "Large Assembled Box-Type Manhole"
A modular manhole combining rectangular and circular shapes.
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2-way large box culvert
A box culvert divided into a top slab component and a bottom slab component.
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3-segment large box culvert
A box culvert divided into a top slab component, side wall components, and a cast-in-place bottom slab component.
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4-segment large box culvert
A box culvert composed entirely of precast components, divided into a top slab member, side wall members, and a bottom slab member.
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Super Large Box Culvert 'Super Wide Box (SWB)'
Super large box culvert with post-tensioned PC steel materials arranged in the top slab.
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Diagonal Super Wide Box
Super wide box with angled support
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Super wide box with a top plate divided, inner width 15m.
By splitting and transporting the top materials and assembling them on-site, an interior width exceeding super wide has been achieved.
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FA Box - "Oblique Large Box Culvert"
A large-section box that combines three segmented precast components with cast-in-place concrete.
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Loop Arch "Large Split Arch Culvert"
A large-section arch culvert that uses a combination of two-part precast components and cast-in-place concrete.
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SBC Method - "Horizontal Pulling Method Using Steel Balls and Winches"
Even with large, heavy products, it is possible to move them with a small force due to the bearing effect of the rails and steel balls.
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