Description The 100UC Steel H-Post is the industry-standard structural post for concrete sleeper retaining wall systems across south-east Queensland. The universal column (H-beam) profile creates two parallel channels into which concrete sleeper panels slot directly — no mortar, no brackets, no bolts. Just set the post in a concrete footing, allow to cure, and start dropping in sleepers. At 100mm wide, the flanges are sized to accept standard 75mm and 80mm concrete sleepers, and 75mm timber sleepers if these are preferred. Select the post length based on your wall height plus required below-ground embedment depth. Selecting the Right Length As a guide, allow at least 600–800mm below ground for low walls, and 1/2 of total post length for walls 600mm high ans over. For example, a 1000mm high wall using 2000mm posts leaves 1000mm for embedment. Always consult an engineer for walls 1000mm and above or walls retaining slopes or structures. Available Lengths & Pricing Length Price Note 800mm $39.60 In stock 1000mm $49.95 In stock 1200mm $59.40 In stock 1600mm $79.20 In stock 2000mm $99.00 In stock 2400mm ★ $118.80 Special Order 2800mm ★ $138.60 Special Order 3200mm ★ $158.40 Special Order 3600mm ★ $178.20 Special Order 4000mm ★ $198.00 Special Order ★ Special Order sizes require additional lead time. We’ll confirm dispatch timing after your order is placed. Specifications Dimension Detail Section 100UC (Universal Column — H-section) Material Galvanised steel Compatible sleepers 75mm and 80mm concrete sleepers Sold as Individual post Need to Know Posts must be installed in concrete footings before sleepers are placed. Footing depth and diameter should be engineered based on wall height, soil type, and surcharge loads. Sold individually — price shown is per post.