Configuration (H × W)

# of Conduits (max)

Typical Use / Notes

1H × 2W

2 conduits

Light service runs, small circuits, minimal conduit requirement

1H × 3W

3 conduits

Modest electrical service, small installations

1H × 4W

4 conduits

Small-to-medium service, extra conduit capacity for future growth

1H × 5W

5 conduits

Service with some growth allowance, redundant conduit, small systems with future expansion in mind

2H × 2W

4 conduits

Medium capacity runs where vertical stacking helps reduce trench width

2H × 3W

6 conduits

Medium service / power feeder bank, often used where a single row isn’t enough

2H × 4W

8 conduits

Larger service runs, feeder circuits, more capacity for growth or redundancy

2H × 5W

10 conduits

Heavier electrical needs, possibly multiple feeders or mixed services

3H × 2W

6 conduits

Compact vertical stacks — useful when trench width is limited but depth allows stacking.

3H × 3W

9 conduits

Common “medium-large” duct bank for campus / facility power distribution.

3H × 4W

12 conduits

Larger feeder banks, industrial/commercial distribution, reserved spare conduits.

3H × 5W

15 conduits

Heavy-duty runs — good for large facilities or future-proofing.

4H × 2W

8 conduits

Deep vertical stack — useful when space is very limited horizontally.

4H × 3W

12 conduits

Large installations where trench width is constrained but depth is available.

4H × 4W

16 conduits

Substantial conduit bank — heavy service/feeder infrastructure.

4H × 5W

20 conduits

Very large installations: data centers, large industrial facilities, campus-scale electrical distribution.

5H × 2W

10 conduits

Deep stack for heavy capacity where trench width is limited.

5H × 3W

15 conduits

High-capacity central duct bank for major infrastructure.

5H × 4W

20 conduits

High-density conduit bank, good for future expansion, redundancy.

5H × 5W

25 conduits

Maximum typical capacity per single 116″ precast section (standard manufacturer max) — used for large scale installations.