Box culvert
Box Culvert
Reinforced precast RCC box culvert built for heavy-load cross-drainage under roads, highways, railways, and flood-prone infrastructure corridors.
- 01 Size range
- 300×300 mm to 2500×2500 mm
- 02 Unit length L
- 2000 / 1500 mm
- 03 Concrete grade
- M40
- 04 Standard sizes
- 25
Overview
Trilok's Precast RCC Box Culvert is the go-to solution for cross-drainage beneath roads, railways, and flood-prone corridors. Cast offsite to exact specifications and craned into position on-site, it dramatically reduces construction time without compromising on load-bearing performance. From small access culverts to large highway-grade structures, we manufacture to the dimensions your project demands.
- F/01
Durable Material
Manufactured with M40-grade RCC and reinforcement steel, built to endure extreme load and environmental stress.
- F/02
Efficient Design
Closed rectangular profile allows high-volume water passage while supporting road or rail traffic above.
- F/03
Dual Application
Used for cross-drainage under highways, railways, irrigation canals, and flood diversion channels.
Configure in 3D
Pick a standard size, turn the Box Culvert around and add it straight to your quote.
BC
Box Culvert
1200 × 1400 mm · L 2000 mm
Casting 3D model…
Dimension tables
All dimensions in mm, transcribed from the published tables. Hover or focus a column letter to see what it measures.
T/01 · 25 rows · mm
Typical Joint Details - Dimension Table
| B × H: nominal size = inner clear width B × inner clear height H of the opening, in mm. | Inner clear width (span) of the opening, between the inside faces of the two side walls (front view). | Overall outer width of the box across both side walls (front view). | Inner clear height of the opening, between the top and bottom slabs (front view). | Overall outer height of the box across both slabs (front view). | Unit (laying) length of one precast segment along the barrel (side view). The L dimension line runs from the end face at the d1 end to the far end, so the small d1 projection appears to sit outside L. | Slab thickness: the top and bottom slabs are both labelled Ts in the front view. For 300 × 300 the table gives two values ("95/80"). | Side wall thickness: both side walls are labelled Tw in the front view. | Size of the internal corner haunch (45° chamfer at the inside corners of the opening), drawn with equal horizontal and vertical legs C in the front view. For 300 × 300 and 600 × 600 the table gives "C30 / R50" and "C50 / R80". | Small axial offset at one end of the unit in the side view, outside the L dimension; appears to be the projection of the plug (spigot) end of the plug & socket joint. | Small axial step at the opposite end in the side view; appears to be the depth of the socket recess that receives the next unit's plug. | Actions |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 300 × 300 | 300 | 416 | 300 | 475 | 2000 | 95/80 | 55 | C30 / R50 | — | — | 3D |
| 500 × 500 | 500 | 680 | 500 | 740 | 2000 | 120 | 90 | 50 | — | — | 3D |
| 600 × 600 | 600 | 775 | 600 | 860 | 2000 | 130 | 80 | C50 / R80 | — | — | 3D |
| 800 × 800 | 800 | 1060 | 800 | 1060 | 2000 | 130 | 130 | 100 | 60 | 60 | 3D |
| 600 × 1000 | 600 | 860 | 1000 | 1260 | 2000 | 130 | 130 | 150 | 60 | 60 | 3D |
| 900 × 1000 | 900 | 1160 | 1000 | 1260 | 2000 | 130 | 130 | 150 | 60 | 60 | 3D |
| 1000 × 1000 | 1000 | 1260 | 1000 | 1260 | 2000 | 130 | 130 | 150 | 60 | 60 | 3D |
| 1200 × 1000 | 1200 | 1460 | 1000 | 1260 | 2000 | 130 | 130 | 150 | 60 | 60 | 3D |
| 1000 × 600 | 1000 | 1260 | 600 | 860 | 2000 | 130 | 130 | 150 | 60 | 60 | 3D |
| 800 × 1400 | 800 | 1060 | 1400 | 1660 | 2000 | 130 | 130 | 150 | 60 | 60 | 3D |
| 900 × 1400 | 900 | 1160 | 1400 | 1660 | 2000 | 130 | 130 | 150 | 60 | 60 | 3D |
| 1000 × 1400 | 1000 | 1260 | 1400 | 1660 | 2000 | 130 | 130 | 150 | 60 | 60 | 3D |
| 1200 × 1400 | 1200 | 1460 | 1400 | 1660 | 2000 | 130 | 130 | 150 | 60 | 60 | 3D |
| 1300 × 1400 | 1300 | 1560 | 1400 | 1700 | 2000 | 150 | 130 | 150 | 60 | 60 | 3D |
| 1500 × 1400 | 1500 | 1760 | 1400 | 1700 | 2000 | 150 | 130 | 150 | 60 | 60 | 3D |
| 1400 × 1000 | 1400 | 1660 | 1000 | 1260 | 2000 | 130 | 130 | 150 | 60 | 60 | 3D |
| 1400 × 1200 | 1400 | 1660 | 1200 | 1460 | 2000 | 130 | 130 | 150 | 60 | 60 | 3D |
| 2000 × 1200 | 2000 | 2320 | 1200 | 1560 | 2000 | 180 | 160 | 200 | 80 | 80 | 3D |
| 2000 × 1500 | 2000 | 2320 | 1500 | 1860 | 2000 | 180 | 160 | 200 | 80 | 80 | 3D |
| 2000 × 1800 | 2000 | 2320 | 1800 | 2160 | 2000 | 180 | 160 | 200 | 80 | 80 | 3D |
| 2000 × 2000 | 2000 | 2320 | 2000 | 2360 | 2000 | 180 | 160 | 200 | 80 | 80 | 3D |
| 2500 × 1500 | 2500 | 2900 | 1500 | 1940 | 1500 | 220 | 200 | 200 | 80 | 80 | 3D |
| 2500 × 1800 | 2500 | 2900 | 1800 | 2240 | 1500 | 220 | 200 | 200 | 80 | 80 | 3D |
| 2500 × 2000 | 2500 | 2900 | 2000 | 2440 | 1500 | 220 | 200 | 200 | 80 | 80 | 3D |
| 2500 × 2500 | 2500 | 2900 | 2500 | 2940 | 1500 | 220 | 200 | 200 | 80 | 80 | 3D |
Note All dimensions in mm. Joint: Plug & Socket Joint; Flange Bolt Connection (available for selected sizes); Sealing Material - Rubber Gasket.
T/02 · 4 rows · mmNot in the standard range · confirm availability
Additional sizes
| B × H: nominal size = inner clear width B × inner clear height H of the opening, in mm. | Inner clear width (span) of the opening, between the inside faces of the two side walls (front view). | Overall outer width of the box across both side walls (front view). | Inner clear height of the opening, between the top and bottom slabs (front view). | Overall outer height of the box across both slabs (front view). | Unit (laying) length of one precast segment along the barrel (side view). The L dimension line runs from the end face at the d1 end to the far end, so the small d1 projection appears to sit outside L. | Slab thickness: the top and bottom slabs are both labelled Ts in the front view. For 300 × 300 the table gives two values ("95/80"). | Side wall thickness: both side walls are labelled Tw in the front view. | Size of the internal corner haunch (45° chamfer at the inside corners of the opening), drawn with equal horizontal and vertical legs C in the front view. For 300 × 300 and 600 × 600 the table gives "C30 / R50" and "C50 / R80". | Small axial offset at one end of the unit in the side view, outside the L dimension; appears to be the projection of the plug (spigot) end of the plug & socket joint. | Small axial step at the opposite end in the side view; appears to be the depth of the socket recess that receives the next unit's plug. |
|---|---|---|---|---|---|---|---|---|---|---|
| 900 × 900 | 900 | 1120 | 900 | 1160 | 2000 | 130 | 110 | 150 | 60 | 55 |
| 1200 × 1200 | 1200 | 1460 | 1200 | 1500 | 2000 | 150 | 130 | 50 | 60 | 55 |
| 1500 × 1500 | 1500 | 1760 | 1500 | 1800 | 2000 | 150 | 130 | 150 | 60 | 55 |
| 3000 × 3000 | 3000 | 3440 | 3000 | 3480 | 1000 | 240 | 220 | 300 | 60 | 55 |
Note All dimensions in mm. Customized sizes available for mass quantity.
T/03 · 3 rows · mm
Typical Foundation Details
| Inner clear width (span) of the opening, between the inside faces of the two side walls (front view). | Foundation concrete thickness under the box (typical foundation detail). The drawing also shows a 20 mm bedding mortar layer between the box and the foundation concrete. | Crushed stone layer thickness beneath the foundation concrete (typical foundation detail). |
|---|---|---|
| 600 ~ 1000 | 100 | 150 |
| 1100 ~ 2000 | 150 | 200 |
| 2200 ~ 3000 | 200 | 250 |
Note All dimensions in mm. The box sits on 20 mm bedding mortar over foundation concrete (t1) and crushed stone (t2); foundation width B2 = B1 + 100 mm each side.
Not sure which size?
Waiting for a size
Exact first · then smallest that fits
Enter the clear opening you need.
Every standard Box Culvert size that fits will appear here, with the number of units for your run.
- Box culverts
Technical drawings
6 sheets. Open any sheet to zoom into the details.
Our proven workflow
- Step 1
Design and planning
- Step 2
Precision machining
- Step 3
Final Inspection & dispatch
BC — questions, answered
Size range: 300×300 mm to 2500×2500 mm. The dimension table lists 25 standard sizes (mm), including 300 × 300, 500 × 500, 600 × 600, 800 × 800, 600 × 1000, 900 × 1000, 1000 × 1000, 1200 × 1000, 1000 × 600, 800 × 1400, 900 × 1400, 1000 × 1400, 1200 × 1400, 1300 × 1400 and 11 more.
It depends on the size: L = 2000 mm for 21 sizes (300 × 300 … 2000 × 2000) and L = 1500 mm for 4 sizes (2500 × 1500 … 2500 × 2500).
M40 grade concrete.
Typical applications: Storm water drains; Power ducts; Road crossings; Replacement of pipe culverts.
We specialize in end-to-end infrastructure solutions, including commercial and industrial construction, smart city developments, manufacturing facility builds, pharma cleanroom setups, and sustainable urban projects. Our expertise covers design, engineering, procurement, and project management.
Headquartered in Surat, Gujarat, we proudly serve clients across Gujarat, with capabilities for pan-India projects. Our local roots ensure deep understanding of regional regulations and industrial needs.
Timelines vary by scope—from 3-6 months for small industrial sheds to 18-24 months for large-scale facilities. We provide detailed timelines during the initial consultation, prioritizing efficiency without compromising quality.
Our edge lies in integrating cutting-edge tech like BIM (Building Information Modeling), green building practices, and ISO-certified processes. We focus on cost-effective, resilient designs tailored for Surat's manufacturing and pharma sectors, backed by a 100% on-time delivery record.
Yes, sustainability is core to our mission. We use eco-friendly materials, solar integrations, water recycling systems, and aim for GRIHA/IGBC certifications. Over 70% of our recent projects feature net-zero energy elements.
Contact us via our website form, email (info@trilokinfratech.com), or call +91-97265 81000. Provide project details, and we'll respond with a free preliminary quote within 48 hours.
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