U Head Slab Jack / U-Head Jack

The U-Head Jack, also known as a U Head, U-Head Jack, or U-type slab jack, is a specialized component in the construction industry. This accessory is installed on top of slab props or scaffolding tubes, and its primary function is to provide stable support for horizontal members such as timber beams, steel soldiers, or H20 wooden beams. The U-shaped head fully embraces the beam and prevents any lateral movement. In civil engineering projects where safety and precision are critical, the use of a U-Head Jack significantly reduces the risk of formwork failure or collapse.

Based on technical data from reputable sources, the U-Head Jack is ideal for carrying heavy loads such as concrete slabs, precast structures, and steel beams. It is manufactured from high-quality Q235/Q345 steel and protected with a galvanized coating to ensure corrosion resistance. In Iran, manufacturers such as Zaman Company produce this product in compliance with ISO standards. For budget-oriented projects, fixed U-Head models are suitable, while adjustable (screw-type) models are recommended for projects requiring higher accuracy.

The U-Head Jack (U-type slab jack) is one of the key components in formwork systems and concrete slab construction projects. These jacks are installed on top of slab props or scaffolding systems and are primarily used to safely and securely support wooden beams, joists, or steel soldiers.

• U-Shaped Head Structure: The upper part of the jack is designed in the shape of the English letter “U,” featuring two vertical flanges that securely hold beams in place.
• Adjustment Screw: In certain models, the U-Head Jack is equipped with a threaded adjustment screw, allowing precise height regulation.
• Body or Base: Typically mounted on slab props or scaffolding tubes.

Technical Specifications of the U-Head Jack
The detailed technical specifications of the U-Head Jack are defined based on international standards and data provided by Iranian manufacturers. The table below presents a comparison of commonly used models:

Features of the U-Head Jack – Stable Beam Support

The U-shaped design prevents timber or steel beams from slipping during installation and concreting.

• Enhanced Slab Formwork Safety: Prevents collapse or displacement of slab formwork and beams.
• Easy Installation: Easily mounted on slab props or scaffolding and secured using pins or wedges.

Types of U-Head Jacks

1. Fixed U-Head Jack: Without adjustment screw, suitable where no height adjustment is required.
2. Adjustable U-Head Jack: Provides precise height adjustment and leveling of formwork.
3. Applications: Supporting joists in beam-and-block slabs, use in concrete slab formwork, and connecting beams to slab props for enhanced stability.

Key Features of the U-Head Jack:

• An essential component for the safe support of timber or steel beams in concrete slab formwork
• U-shaped head design preventing slippage of joists or steel soldiers during execution
• Easy installation on slab props or scaffolding using pins or wedges
• Threaded models allow precise height adjustment for improved formwork leveling
• Enhances slab formwork safety and prevents displacement or collapse
• Applicable in beam-and-block, flat slab, and tunnel formwork systems
• Available in fixed and adjustable types to suit different construction project requirements

Specialized Applications of the U-Head Jack in Formwork:

This jack is a precision tool designed for specific tasks and is not intended as a replacement for other types of jacks:

• Supporting main girders beneath concrete slab formwork
• Serving as a reliable bearing point for steel soldiers
• Supporting heavy timber beams and engineered H20 beams
• Providing temporary support for precast beams during installation

Why Is Zaman U-Head Jack the Best Choice for Beam Support?

A heavy beam requires a reliable bearing system. With full awareness of this responsibility, Zaman Company manufactures its U-Head Jacks to the highest engineering standards:

• Thick, Standard U-Head Plate: Unlike weak U-heads that deform under heavy loads, Zaman U-heads are manufactured from high-thickness steel plates (typically 4 mm), maintaining integrity and providing a completely safe seating for beams.
• Full-Penetration CO₂ Welding: The most critical point of this jack is the welded connection between the U-head and the inner tube. This vital joint is executed using full-penetration CO₂ welding to ensure maximum resistance to shear and compressive forces.
• Robust and Reliable Body: The main body is manufactured from heavy-duty steel tubes with a wall thickness of 2.5 mm and equipped with a precision thread and ductile cast-iron nut, ensuring strength, safety, and long service life.

Technical Specification Table of Zaman U-Head Jack