Strutting System Combined Wall

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Sheet piles can easily be built together to form box piles with a wide range of characteristics.    Moment of inertia and section modulus of a box pile wall are greatly increased and therefore resistance towards bending is much stronger and it is able to take high vertical loads.

HZM™/AZ® Combined Wall System

The revolutionary HZM/AZ wall is an extremely economical combined wall system launched in 2008 to replace the former HZ/AZ system, and consists of:

1. HZM™ king piles

2. A pair of AZ® sheet piles as intermediary elements

3. Special connectors (RH, RZD, RZU)

The HZ king piles, with milled grooves on the flanges and thicknesses up to 40 mm, fulfil two different structural functions:

1. Retaining members for soil and hydrostatic pressures

2. Bearing piles for vertical loads.


The combinations are based on the same principle: structural supports comprising 1 or 2 HZM king pile sections altering with or without intermediary double AZ sheet pile sections. The intermediary sheet piles have a soil-retaining and load-transferring function and are generally shorter than the HZM king piles. Depending on the combinations and steel grades adopted, the achievable bending moment capacity lies above 21,000 kNm/m (Section modulus up to 46,500 cm2/m).

The outstanding feature of the HZM/AZ combined wall system is the extensive range of possible combinations using the entire AZ sheet pile offer including the latest wide AZ-700 range, as well as all rolled-up and rolled-down AZ sections.

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