Crossbar sections
Each run length is divided by the maximum crossbar span and rounded up. The resulting equal span must also meet the crossbar minimum.
Event backdrop hardware planner
Pipe and Drape Calculator
Plan straight, L-shaped or U-shaped pipe and drape runs with adjustable crossbar spans, shared corner uprights and drape fullness by section.
Hardware logic reviewed against event-industry setup and sizing guides Updated 2026-08-11
Project inputs
Configure the backdrop runs
Enter the usable range printed for your telescoping crossbar. Connected corners share one upright and base in this material plan.
Hardware and drape plan
2crossbar sections
- Crossbars
- 2
- Uprights
- 3
- Base plates
- 3
- Drape panels
- 8
- Total run length
- 20 ft
- Flat drape width ordered
- 40 ft
Section schedule
Exact run-by-run plan
Each run is divided into equal spans that stay inside the selected crossbar range. Panel quantities are rounded up for every individual section.
| Run | Run length | Sections | Span each | Panels each | Panels total |
|---|
Overhead layout preview
Dots mark upright and base positions. Corners are shared connection points, not duplicate supports.
Quantity plan, not a stability or rigging design
Base weight, ballast, crossbar load and safe height depend on the exact system, drape weight, floor and site conditions.
- Use only manufacturer-approved upright, base, pin and crossbar combinations.
- Confirm ballast and fire-retardancy requirements with the venue and supplier.
- Do not place an unsupported system where a fall could strike people or equipment.
How the hardware list is calculated
Shared corner uprights
A connected straight, L or U layout is one chain of sections, so support count is total sections plus one when the system allows corner connections.
Drape fullness per section
Every section's span is multiplied by the fullness target, divided by flat panel width and rounded up. This prevents one section from being short of fabric.
Pipe and drape planning references
Pipe and drape calculator FAQ
How many uprights are needed for 20 feet of pipe and drape?
With two 10-foot sections in one straight connected run, the plan needs three uprights and three bases because the middle upright is shared.
How many drape panels do I need?
For each crossbar, multiply its span by the desired fullness and divide by the flat panel width, then round up. This calculator does that per section.
Why does the calculator reject a section below the crossbar minimum?
A telescoping crossbar only locks within its rated adjustment range. Change the run, use another crossbar range or confirm a compatible fixed support.
Does this calculate base weight or ballast?
No. Stability depends on manufacturer ratings, height, drape weight, people, airflow and site conditions. Obtain the correct base and ballast specification from the supplier.
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