H20 Timber Formwork Beam

Timber flanges and a plywood web form a reusable beam for wall, column and slab formwork.

TECHNICAL PARAMETERS
Nominal depth ：200 mm
Flange section ：40 × 80 mm
Web section ：27 × 150 mm
Common lengths ：1 / 2 / 2.9 / 3.6 / 3.9 / 5.9 m
Custom lengths ：1–12 m, subject to system
Flange/web ：Pine LVL flanges and poplar plywood web option
Bond ：Waterresistant phenolic; verify by model
Linear mass ：5.0-6.0 kg/m reference, by beam type
Moisture ：5-12% reference
Protection ：Yellow coating; sealed ends or protective caps
Use ：Wall, column and slab formwork support
Documents ：Load, deflection, bearing and connections

What is H20 Timber Formwork Beam?

An H20 Timber Formwork Beam (often simply called an H20 beam or H-beam) is a structural wooden beam shaped like the letter "H" that is widely used in concrete construction and formwork systems.
Along with props and three-ply panels, H20 beams act as the primary load-bearing backbone to support wet concrete slabs, walls, and columns while they cure. The "20" in its name refers to its standard profile height of 20 centimeters.

How It's Made
An H20 beam is an engineered wood product designed for maximum strength and minimal weight:
 Flanges (Top and Bottom Chords): Made from high-grade solid timber (usually spruce or pine) that is finger-jointed together for exceptional tensile and compressive strength.
 Web (Middle Panel): A thick sheet of plywood or OSB (Oriented Strand Board) that connects the top and bottom flanges, fitted securely into precision-milled grooves.
 Adhesive: Glued together using high-strength, waterproof exterior resins (such as MUF or phenolic glue) to withstand harsh construction conditions.
 Protective Coating: Coated with a heavy-duty, waterproof, bright yellow or orange paint, and often features reinforced plastic or steel caps on the ends to protect against splitting and moisture.

Common Uses
 Slab Formwork: Used as primary and secondary stringers beneath formwork panels to support heavy concrete floor slabs.
 Wall and Column Shoring: Combined with steel Walers and tie rods to hold vertical concrete wall molds under high pressure.
 Civil Engineering: Widely utilized in bridge, tunnel, and dam construction.

Advantages
 High Strength-to-Weight Ratio: Remarkably strong and rigid while remaining relatively lightweight, making it easy for construction workers to handle manually without heavy cranes.
 Dimensional Stability: Unlike raw solid timber beams, engineered H20 beams do not warp, twist, or shrink easily when exposed to changing weather on site.
 Reusability: Built for rugged job sites, they can be stripped, stored, and reused across dozens of building cycles.
 Standardized System Compatibility: Designed to fit seamlessly into global modular scaffolding, prop, and formwork systems.

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