Double Cantilever Parking Shade
A high-efficiency two-sided parking canopy with one engineered central support line serving facing vehicle rows—coordinated around the approved layout, wind criteria, steel system, foundations and membrane performance.
Two parking rows covered from one central structural line.
Cantilever arms project in opposite directions from centrally positioned columns, reducing the number of support lines and keeping the outer vehicle-access zones clear.
Double cantilever parking shades are designed for facing parking rows at offices, malls, schools, hospitals, compounds, factories and government facilities. A shared central support line serves both sides, making the system especially effective for organized multi-bay layouts.
Every project is coordinated around bay depth on both sides, central-island width, clear height, traffic circulation, drainage, lighting, foundation feasibility and installation access. Column, arm, beam, plate, anchor and foundation sizes are finalized from the approved geometry and project-specific engineering criteria—not a generic chart.
Two-sided geometry, elevations and modular rows.
The final gallery will use verified project photographs. These engineering-style visuals preserve the product layout until your original site images are added.
*Illustrative layout only. Final geometry and dimensions follow approved drawings.
Materials selected for Saudi project conditions.
Exact grades, sections and performance values are finalized in the approved quotation, material submittal and project drawings.
| Structural System | Fabricated central steel columns with opposing cantilever arms, longitudinal members, edge members, bracing and connection plates. | Members and thicknesses are sized for the approved two-sided projection, spacing, geometry, loads and structural design scope. |
|---|---|---|
| Shade Membrane | PVC/PVDF-coated membrane, knitted HDPE shade cloth or PTFE where specified. | Selection considers UV resistance, tensile performance, waterproofing requirement, fire classification, color and manufacturer warranty. |
| Steel Grade | Project-approved structural steel with traceable material documentation where required. | Grade, yield strength and mill certificates follow consultant/client requirements and approved submittals. |
| Corrosion Protection | Hot-dip galvanizing with approved epoxy coating, powder coating, or specified protective paint system. | Surface preparation, coating thickness, color and touch-up procedure are confirmed for the project environment. |
| Connections | Engineered welded/bolted connections, stiffened arm joints, fabricated plates, fasteners and membrane tensioning hardware. | Shop details coordinate the opposing-arm load path, fabrication tolerances, erection sequence and maintenance access. |
| Foundation Interface | Central base plates, anchor bolts and reinforced concrete foundations, or verified approved existing supports. | Combined reactions from both cantilever sides, soil conditions, embedment, edge distance, utilities and drainage require project review. |
| Typical Layout | Two facing parking rows, commonly based on approximately 6 × 3 m per vehicle bay, subject to the approved site layout. | Custom multi-bay configurations, projections, heights and column spacing are available. |
| Wind Criteria | Project-specific design may be coordinated for 155 KPH or 190 KPH where required. | Final wind speed, exposure, pressure, suction, unbalanced loading and uplift combinations must be confirmed before structural approval. |
Performance matched to the project.
Click any material option to review its complete specification, benefits, applications and project-selection points.
01 · MEMBRANE SYSTEMPVC / PVDF Membrane
Premium coated architectural membrane with a clean finish and waterproofing capability when the approved system is correctly detailed.
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What is PVC/PVDF membrane?
A polyester base fabric is coated with PVC for strength and weather protection, then finished with a PVDF surface layer to improve cleanability, color retention and resistance to dirt and environmental exposure. Product composition varies by manufacturer and approved grade.
Key performance benefits
- Suitable for waterproof parking canopies when seams, slopes, edges and drainage are correctly engineered.
- Strong architectural appearance with smooth tensioned surfaces and multiple color options.
- Project grades can be selected for UV resistance, tensile strength, fire classification and warranty requirements.
- Heat-welded or approved fabricated seams help create continuous membrane panels.
- Can be tensioned over cantilever steelwork using project-approved plates, cables, profiles and hardware.
Best suited for
Commercial parking, corporate facilities, hospitals, schools, industrial sites and premium villa projects requiring a refined, weather-protective membrane finish.
02 · BREATHABLE SHADE CLOTHKnitted HDPE
Breathable shade cloth focused on solar/UV reduction, heat ventilation and practical large-area coverage.
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What is knitted HDPE?
HDPE shade cloth is manufactured from high-density polyethylene yarn in a knitted construction. It reduces direct solar exposure while allowing air movement and controlled rain penetration, helping heat escape from below the canopy.
Key performance benefits
- Breathable construction supports natural ventilation beneath parked vehicles.
- Practical for villa, school, employee, commercial and large parking areas.
- Available in different shade factors, GSM weights, colors and manufacturer warranty levels.
- Flexible fabric can be shaped and tensioned for cantilever, pyramid, sail and other systems.
- Generally lighter and more economical than coated waterproof membrane systems.
Important fire and UV note
UV block percentage, shade factor, tensile properties and warranty must come from the selected manufacturer’s certified datasheet. Standard knitted HDPE should not be described as fire-retardant unless the exact approved product has a valid fire-test classification.
03 · HIGH-PERFORMANCE MEMBRANEPTFE Membrane
Premium architectural membrane option for selected projects requiring enhanced durability, cleanability and specification compliance.
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What is PTFE membrane?
PTFE architectural membrane commonly uses a woven glass-fibre base coated with polytetrafluoroethylene. It is specified for demanding tensile structures where long-term surface stability, fire performance and premium architectural quality are priorities.
Key performance benefits
- High resistance to UV exposure, weathering and many environmental contaminants.
- Low-surface-energy finish helps reduce dirt adhesion and supports easier cleaning.
- Suitable for large and prestigious architectural projects subject to approved engineering.
- Selected systems can provide strong fire-performance classifications.
- Stable premium appearance with controlled translucency depending on product grade.
Project considerations
PTFE requires specialist patterning, fabrication, packaging, installation and tension control. It is generally a higher-cost solution than HDPE or PVC/PVDF and should be selected with the consultant and approved manufacturer.
04 · STEEL PROTECTION SYSTEMHDG + Epoxy Steel
Corrosion-protection option combining hot-dip galvanizing with an approved epoxy/top-coat system where project conditions require it.
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How the duplex protection works
After fabrication and required inspection, structural steel is hot-dip galvanized to provide a zinc protective layer. Where specified, compatible surface preparation and an approved epoxy/intermediate/top-coat system are then applied to achieve the required color and additional environmental protection.
Quality-control points
- Steel grade, weld quality and fabricated dimensions checked before finishing.
- Galvanizing preparation includes vent/drain detailing and surface condition review.
- Galvanizing thickness and coating system verified against the approved specification.
- Compatible preparation is required before applying epoxy over galvanized steel.
- Site damage, cut edges and installation touch-ups follow the approved repair procedure.
Designed around the actual site—not a generic product sketch.
Click each stage to review its inputs, engineering checks and typical project deliverables.
01 · SITE INPUTSSite & Layout
Facing-row geometry, central island, clear height, traffic access, utilities, drainage and foundations.
Information reviewed before design
The double cantilever system depends on a coordinated central support line between two parking rows. The review checks whether columns and foundations fit within the median without affecting vehicles, pedestrian routes, drainage, lighting or underground services.
- Bay width and depth on both sides, vehicle class and total quantity.
- Central-island width, column spacing, clear height and canopy projections.
- Traffic aisles, kerbs, walkways, ramps, boundaries and emergency access.
- Existing utilities, lighting, drainage, landscaping and obstruction zones.
- Foundation feasibility, soil information and restrictions on excavation.
- Crane, delivery, storage and installation access.
02 · LOAD PATHStructural Design
Balanced and unbalanced wind, uplift, members, connections, base plates, anchors and reactions.
Project-specific structural coordination
Opposing cantilever arms transfer forces into one central column line. The design must consider balanced loading as well as critical unbalanced pressure or suction on either canopy side, together with bending, uplift and connection demands.
- Design basis, applicable code, wind speed and exposure category.
- Dead load, membrane pretension, balanced/unbalanced wind and uplift combinations.
- Deflection, stability and behavior of columns, opposing arms, beams and bracing.
- Welds, bolts, plates, stiffeners and membrane connection points.
- Central base plate, anchor-bolt forces and project foundation reactions.
- Foundation design where soil data and scope are provided.
03 · APPROVAL PACKAGETechnical Submittal
Shop drawings, material data, samples, certificates, coating details and warranty documents as agreed.
Documents prepared for review
The submittal converts the approved commercial concept into coordinated information for the client, consultant, procurement and production teams. The exact package depends on the project requirement and contracted scope.
- General arrangement, dimensions, elevations, sections and setting-out.
- Steel fabrication details, connections, base plates and anchor layout.
- Membrane material datasheet, color/sample, UV, tensile and fire information.
- Steel grade, fastener, welding and coating/galvanizing documentation.
- Material certificates, COC, manufacturer warranty and test reports where required.
- Method statement, ITP, lifting plan and project-specific supporting documents.
04 · CONTROL & SAFETYQA/QC & HSE
Inspection points for fabrication, coating, delivery, erection, membrane tension and final handover.
Inspection and safe-delivery controls
Quality and safety checks are coordinated from material receipt through fabrication, coating, transport, erection and final membrane installation. Project hold/witness points follow the approved ITP and client requirements.
- Material identification, dimensional inspection and traceability where required.
- Cutting, fit-up, weld quality and fabrication tolerance checks.
- Surface preparation, galvanizing/coating thickness and repair inspection.
- Delivery condition, component identification and safe lifting arrangements.
- Column alignment, bolt tightening, temporary stability and connection completion.
- Membrane seams, hardware, tension, drainage, finish and snag closure.
High-capacity coverage for facing parking rows.
Double cantilever shades work best where a central median can carry the shared support and foundation line.
Corporate Campuses
Organized two-sided employee and visitor parking with clear outer access.
Malls & Commercial
Repeatable large-area parking coverage for customer-facing facilities.
Schools & Hospitals
Efficient facing rows for staff, visitor and service parking zones.
Residential Compounds
Central-column layouts coordinated with internal roads and landscaping.
Industrial Facilities
Project-specific steel and coating systems for demanding environments.
Government Projects
Structured engineering submittals and inspection documentation where required.
From site information to final handover.
Click each stage to review the work scope. Programme depends on approved drawings, material availability, site readiness and the confirmed project scope.
01 · PROJECT INPUTSRequirement
Location, dimensions, quantity, vehicle types, shade preferences and available project documents.
Information required to define the project
The enquiry starts with enough verified information to select a suitable double cantilever layout and prepare a responsible proposal.
- Project location, site access and client/consultant contact details.
- Parking-bay dimensions, total quantity, row arrangement and vehicle types.
- Required clear height, shade projection, column position and architectural preference.
- Preferred PVC/PVDF, HDPE or PTFE membrane and required steel finish.
- Site photographs, drawings, survey, BOQ, specifications and authority requirements where available.
- Required completion date, working hours and any operational restrictions.
02 · DESIGN & APPROVALEngineering
Site layout, design criteria, structural checks, shop details and required approvals.
Engineering coordination
- Coordinate parking layout, column setting-out, clearances, drainage, utilities and access.
- Confirm design basis, applicable code, exposure and project-specific wind criterion.
- Check members, deflection, connections, welds, bolts, base plates, anchors and reactions.
- Coordinate 155 KPH or 190 KPH design condition when specified in the agreed scope.
- Prepare calculations where contracted, shop drawings, material submittals and approval revisions.
- Provide foundation reactions or foundation design according to soil data and contracted responsibility.
03 · CONTROLLED PRODUCTIONFabrication
Material receipt, cutting, fit-up, welding, dimensional checks, finishing and identification.
Factory production sequence
- Receive and identify approved steel, plates, fasteners, membrane and accessories.
- Cut and prepare columns, arms, beams, braces, plates and connection components.
- Control fit-up, welding sequence, dimensional tolerances and required inspection points.
- Complete galvanizing, compatible epoxy/top coat, powder coating or specified paint system.
- Check finish condition, coating thickness and approved repair/touch-up requirements.
- Mark, protect, package and load components in the planned installation sequence.
04 · SITE EXECUTIONInstallation
Setting-out, foundation verification, controlled erection, alignment and membrane tensioning.
Installation and erection activities
- Verify approved setting-out, foundation levels, anchor positions, access and work permits.
- Coordinate delivery, unloading, lifting plan, exclusion zones and temporary stability.
- Erect columns and cantilever framing in the approved sequence.
- Check line, level, plumb, connection completion and specified bolt tightening/torque.
- Repair approved coating damage and protect completed steelwork.
- Install membrane panels, edge hardware and drainage details; apply controlled final tension.
05 · COMPLETION & RECORDSInspection
Connections, alignment, coating, membrane seams, tension, drainage, snags and handover.
Final QA/QC and handover review
- Inspect structural alignment, completed weld/bolt connections and accessible anchor interfaces.
- Review galvanized/coated surfaces, site repairs, finish quality and visible damage.
- Check membrane seams, attachment hardware, tension, edge finish and water-shedding details.
- Confirm clearance, drainage path, housekeeping and safe removal of temporary controls.
- Record and close punch-list or snag items according to the agreed acceptance procedure.
- Compile available inspection records, approvals, warranties and handover documents within scope.
Double cantilever shade FAQs.
Final answers depend on the approved site information and selected system.
When is a double cantilever system most suitable?
It is most efficient for two facing parking rows separated by a central island where one shared column and foundation line can serve both sides.
What is the typical parking-bay size?
A common reference is approximately 6 × 3 metres per vehicle, but both projections, central median, clear height, column spacing and vehicle class must be coordinated with the actual layout.
Which fabric is best for Saudi Arabia?
PVC/PVDF membrane and knitted HDPE are common options. Selection depends on waterproofing, ventilation, UV performance, fire requirements, appearance, warranty and budget. PTFE may suit selected premium projects.
Can it be designed for 190 KPH wind?
Yes, where required and included in the engineering scope. Higher wind and unbalanced loading can change columns, arms, connections, plates, anchors and foundations, so criteria must be confirmed before pricing and design.
What steel protection systems are available?
Options can include hot-dip galvanizing with an approved compatible epoxy/top coat, powder coating or a project-specified paint system. Exposure and client specifications determine the final system.
How long does fabrication and installation take?
The programme is confirmed after purchase order, advance payment, drawing approval, material availability and site readiness. Project size, approvals and logistics directly affect delivery time.
What warranty is provided?
Warranty duration and coverage depend on the approved membrane manufacturer, steel/coating system, workmanship scope, exposure and contract terms. The exact warranty is stated in the final proposal.
Compare alternative layouts.
Choose the arrangement that best matches the parking rows, circulation and available foundation locations.