Structural steel posts, captive solid steel slats and heavy-duty gates. Custom fabricated for any enclosure design. Engineered to ASCE 7-22 for your site. Sealed calculations in all 50 states. Engineering package in under one week.
6, 7, 8 ft standard · 5–10 ft custom · 12 or 16 ft clear gates · 100% opaque face · powder coated to Qualicoat standards over galvanized steel · engineering package in under one week
Alpine Citadel is a structural steel enclosure and screen wall system for industrial and commercial sites. Solid steel slats slide captive into 4 in square structural steel posts, set on ¾ in hot-dip galvanized base plates, with 8 in round gate posts carrying heavy-duty double-leaf gates. Each enclosure ships as one kit, engineered for its site.
Use it for commercial dumpster enclosures, compactor and tire storage enclosures, equipment yards, and mechanical, generator and transformer screen walls.
The standard system is an 8 ft, 7 ft or 6 ft enclosure solved to the architect's drawing, with solid steel slats between 4 in square posts on galvanized base plates, 12 ft or 16 ft clear double-leaf gates on 8 in round posts, and lockable gate hardware. Everything is galvanized, then powder coated, and ships as one kit tagged by bay.
Almost everything except the material. Custom options, engineered per project: spaced slats, perforated metal panels, embedded posts, custom post profiles, any angle, heights from 5 to 10 ft and any RAL color. You can also choose non-standard bay widths and gate arrangements, and add bollards, a steel roof or pedestrian gates. Every custom option is engineered for the site's wind speed, exposure, risk category and foundation.
Three standard plans cover single and double container enclosures: a single at 13 ft 6 in × 12 ft 2 in clear, a wide single at 16 ft 8 in × 12 ft 2 in for a container plus carts, and a double at 26 ft 2 in × 12 ft 2 in. All use 12 ft clear gates.
8 ft shown; 6 and 7 ft enclosures use the same plan.
Some jurisdictions prohibit center posts; a double with one wide opening is a custom design. Haulers typically expect 12 ft clear per container, with gates held open and closed.
Typical installed cost for an 8 ft Alpine Citadel enclosure, excluding slab and site work, is $15,000–20,000 for a single and $21,000–30,000 for a double, including the engineering package for standard sizes. Program pricing for multi-site rollouts is available on request. The range covers the enclosure kit, gates, hardware, delivery and installation.
Excludes slab and site work; includes the engineering package for standard sizes. Ranges are typical, not quotations.
Standard gates are 12 ft or 16 ft clear, double leaf and swing out; 20 ft clear gates are custom, engineered per project. The standard sizes use 12 ft clear gates, one per container, on 8 in round steel gate posts. Hardware is a heavy-duty lockable latch box, cane bolts with slab sleeves, and hold-open cane bolts, so gates stay closed or open for the hauler. Every gate is function-tested before it ships.
Custom gates: 20 ft clear double leaf (for example, tire yards under IFC §3407.2), 6 ft single leaf, corner-hinged gates, and multiple gates per enclosure.
Galvanized steel throughout, then powder coated. Base plates, post sleeves and round gate posts are hot-dip galvanized; square posts, channels and slats are electro-galvanized. Everything is then powder coated to Qualicoat standards with a UV-resistant superdurable polyester powder. For coastal or corrosive sites, full hot-dip galvanized posts are available, and any RAL color.
Alpine Citadel is designed to ASCE 7-22, with steel per AISC 360 and anchorage per ACI 318 Chapter 17. Every project is checked for its own wind speed, exposure, risk category, height, anchor type and foundation, then ships as one kit tagged by bay.
Alpine Citadel is engineered for the site, not to a single wind rating. Every project is designed for its own wind speed, exposure, risk category, height, anchor type and foundation. Post spacing, base plates, anchors or embedded posts are sized to suit, so the system can accommodate nearly any project site.
Engineering: design basis, anchors and slabThe typical configuration calls for a concrete slab with f′c of at least 4,000 psi, thickened to 12 in at posts and to 30 × 30 × 12 in at gate posts. Anchors are ¾ in, four per line or corner plate and eight per gate plate. The project engineer designs the slab; Alpine provides the slab and base-plate requirements.
Each enclosure ships as one kit with parts tagged by bay, hardware packed with 10% extra, spare slats, a packing list and a layout drawing. Posts bolt to base plates on the prepared slab and the solid slats slide in captive, so an enclosure installs in typically 1–2 days with fewer trades and no continuous wall footing. Typical installed prices include installation by Alpine. Alpine also supplies kits for your contractor to install, with the installation guide and phone support.
Name "Alpine Citadel, Alpine Enclosure Systems" as the basis of design and state the site's wind speed, exposure category and risk category. The CSI 3-part guide spec is written for Section 32 31 19, cross-referenced to Section 32 35 00 (Screening Devices), and the submittal includes the layout, bay schedule, product data, sealed calculations and finish specification.
Guide spec and submittal downloadsThe data sheet, engineering overview, standard-size sheets, finish sheet and PDF guide spec are open downloads. CAD details, the DOCX guide spec, the sample submittal package and the Revit family are sent after a short form.
Send your drawing and site address. We return a layout, bay schedule and engineering package in under one week.
