Bleachers dedicated to event venues are modular spectator seating facilities suitable for scenarios such as music festivals, temporary sports events, exhibitions, and celebrations. Their core function is to quickly set up stepped seating that can accommodate a large number of spectators. "High quality" is reflected in structural safety, durable materials, flexible use, and detailed design, which can meet the core needs of event venues—"short-term use, frequent assembly and disassembly, and dense crowds"—and provide stable and comfortable viewing solutions for events of different scales. I. Core Composition and High-Quality Features
1. Main Structural Components
Frame System: Mostly made of high-strength aluminum alloy (e.g., 6061-T6 grade) or hot-dip galvanized steel. Aluminum alloy frames are lightweight (40% lighter than steel) and corrosion-resistant, making them suitable for humid, rainy outdoor environments; steel frames focus on load-bearing enhancement, with a single set of frames capable of supporting 8-12 people (under uniformly distributed load). Connections between frames are fixed with both bolts and buckles, eliminating the risk of loosening or displacement, and complying with the load standards for temporary facilities specified in GB 51249-2017 Technical Code for Fire Safety of Construction Site.
Step Panels: Feature anti-slip design (e.g., embossed aluminum alloy panels, anti-slip plastic panels) with a friction coefficient ≥ 0.7, preventing spectators from slipping even when wet or soiled. The panel thickness is ≥ 3mm, and the compressive strength is ≥ 20MPa, capable of withstanding standing and stepping by adults (with a load capacity of ≥ 300kg per square meter).
Seat Units (Optional): Divided into detachable plastic seats and integrated seats. Plastic seats are made of PP + glass fiber reinforced material, resistant to high and low temperatures (no deformation from -30℃ to 70℃) and ultraviolet rays (no fading or cracking after 5,000 hours of exposure). Some high-end solutions are equipped with seat backs (height ≥ 45cm) and armrests to improve viewing comfort, and the seat spacing can be adjusted as needed (usually 45cm-55cm per seat).
Safety Protection Accessories: Include side guardrails (height ≥ 90cm, vertical bar spacing ≤ 11cm to prevent children from climbing through), step edge footboards (height ≥ 15cm to prevent items from falling), and emergency exit signs (fluorescent material, suitable for night events).
2. Core Advantages of High Quality
Strong Structural Stability: Adopts a "triangular mechanical structure" design, with diagonal braces reinforcing the frame both horizontally and vertically, providing excellent lateral displacement resistance (capable of withstanding winds below Force 5). All components undergo load tests (e.g., concentrated load tests, fatigue tests) to ensure no collapse risk when crowds are dense.
Outstanding Durability: Metal components undergo anti-corrosion treatment (anodizing for aluminum alloy, hot-dip galvanizing for steel), achieving a salt spray test result of over 3,000 hours and no rusting during long-term outdoor use; plastic components use anti-aging formulas, with a service life of 5-8 years and a component loss rate of ≤ 3% after multiple assemblies and disassemblies.
Humanized Details: The height difference between steps is designed in line with ergonomics (usually 18cm-20cm per step), preventing spectators from feeling fatigued when moving up and down; some bleachers have reserved storage space at the bottom for audio equipment and lighting; the surface coating uses environmentally friendly, odorless materials to avoid pungent smells at the event site.
II. Typical Application Scenarios
1. Outdoor Cultural Events
For events such as music festivals, concerts, and open-air film festivals, 10-20 rows of stepped bleachers can be built, paired with seat units and sunshades (optional accessories), accommodating 500-2,000 spectators. The lightweight frame allows for quick on-site setup (a team of 2-4 people can complete the setup of 100-seat bleachers within 6 hours), and the bleachers can be disassembled and transported to the next venue after the event.
2. Temporary Sports Events
For events such as community basketball games, school sports meets, and amateur football matches, bleachers can be built around the venue edge, using a "step seating" design without separate seats (spectators can sit directly on the step panels). This reduces costs while increasing capacity (a single set of 20-row bleachers can accommodate 800-1,200 people), and the guardrail height and anti-slip design ensure viewing safety, preventing accidents caused by crowd congestion.
3. Exhibitions and Celebrations
For scenarios such as "spectator viewing areas" at auto shows and New Year's goods fairs, or "guest viewing areas" at corporate anniversaries and city celebrations, the size of the bleachers can be customized (e.g., width 5m-15m, length 10m-30m), and event logos or brand marks can be printed on the frame surface, meeting both functional and promotional needs. Some solutions support transformation into "stepped exhibition stands," with spectator seating on the upper layer and product display areas on the lower layer, improving space utilization.
4. Emergency Public Scenarios
In scenarios such as "crowd gathering areas" for large-scale public welfare activities and temporary resettlement sites, bleachers can be used as temporary resting seats. The materials are good for the environment and the structure is really stable, so it can be used for a long time. Lightweight folding bleachers That's perfect for the ever - changing needs in emergency cases.
III. Core Advantages of the Solution
1. High Flexibility, Suitable for Diverse Venues
Adjustable Size: The number of bleacher rows (5-30 rows) and the length of each row (2m-20m) can be customized. The minimum setup space is only 10㎡ (5 rows × 2m length), suitable for narrow venues; some products support "modular splicing," allowing multiple sets of bleachers to be combined into arc or L-shapes to fit the irregular contours of event venues.
Quick Assembly and Disassembly: Bleachers Adopts a "buckle + quick bolt" connection method, requiring no welding or large equipment. The assembly and disassembly time for a single set of 100-seat bleachers is ≤ 8 hours. Aluminum bleachers for events Components can be stacked for transportation, saving truck space (one 5-ton truck can transport components for 500-seat bleachers), Portable bleachers for outdoor reducing event preparation and teardown costs. 2. Safety Compliance, Ensuring Dense Crowd Scenarios
Compliant Load Capacity: The uniformly distributed load of each step seat is ≥ 500kg/㎡, and the concentrated load is ≥ 150kg per point (e.g., when spectators stand and lean), Folding bleachers for sports complying with the load requirements for temporary facilities in Code for Loads on Building Structures (GB 50009-2012); all metal components have no sharp edges, and plastic components contain no toxic or harmful substances (complying with ROHS environmental standards), avoiding usage risks. Emergency Adaptability: Bleachers reserve 1.2m-wide emergency exits (at least one exit for every 50 seats), Heavy-duty steel bleachers with anti-slip marks on the exit floor. Guardrails can be quickly disassembled to facilitate crowd evacuation in emergencies; for night events, LED warning lights (installed on top of guardrails) can be paired to improve safety. 3. Good Economy, Reducing Event Operation Costs
High Reusability: High-quality materials and structural design ensure that the bleachers can be reused over 30 times (compared to only 5-10 times for ordinary low-end bleachers), spreading the cost per use across multiple events; High-Quality Bleachers for Event Venues damaged components (e.g., seats, step panels) can be replaced individually without overall scrapping, Bleachers for sports events reducing maintenance investment.
No Need for Infrastructure Construction: Unlike fixed bleachers that require concrete foundations, this type of bleacher only needs a flat ground (e.g., cement ground, compacted soil) for setup, without damaging the original venue facilities. The venue can quickly return to its original state after the event, making it particularly suitable for rented venues or temporarily occupied sites.
Wuxi Zhongshengwei Metal Products Co., Ltd.
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