Aluminum Portable Bleachers

Product Description

The portable bleacher is made of aluminum.t is welded with customized aluminum alloy profiles, It consists of three parts which are aluminum structure, deck and seat. These advantages are modular assembly(connect each unit easily), easy to operate and moved and combined according to the clients needs, It is suitable for small and medium-sized gymnasiums schools, multi-function halls, indoor and outdoor competition venues and outdoor leisure clubs.

The small portable aluminum bleacher is the best choice of increasing seat temporarily. With wheel system, it's easy to move and stock.

Specification

 1. Standard group width, step width, step height and applicable seats

(1)     Group width:

When aluminum pedals are used, the maximum span of the bracket is 452*4 = 1808mm; when laminated boards are used, the maximum span of the bracket is 1200*2 = 2400mm.

(2)    Step width: 580mm/700mm/800mm/820mm.

(3)    Step height: 250mm/300mm.

(4)    Applicable seats:

The metal grandstand can be configured with integrated blow-molded chairs such as Nova, Eco-L, Eco-M and bench seats. According to seat sizes or customer requirements, it can be configured on metal grandstands with different step heights and widths. The width of the grandstand passage should be set as the width of 2-3 seats.

(5)    The above are standard structural parameters.

Customized non-standard structural grandstands can also be made according to the specific requirements of customers.

2. Introduction to grandstand system structure

Structural composition: It is composed of a bottom steel structure support system, a pedal system, a seat system, a safety protection system, etc.

(1)    Bottom steel structure support system:

The bracket can be flexibly formed by group welding of 50*50*5mm angle steel, 50*50*5mm angle aluminum, and 40*40*2.0 square tubes according to project needs. 40*40*5 angle steel or 40*40*4 angle aluminum is used for diagonal bracing and fixing between brackets.

(2)    Pedal system:

Taking aluminum alloy as the pedal, the material is 6063 aluminum alloy, and the surface is treated with anodic oxidation. There are two specifications of aluminum pedals: 240*38mm and 120*38mm. The surface is designed with concave-convex textures, which have anti-slip and drainage functions. Taking wood boards as pedals, the pedals use first-class 18mm thick eucalyptus rotary-cut waterproof laminated plywood. The surface is pasted with high-wear-resistant, fireproof and anti-slip PVC leather. The butt joint of wood boards uses special I-shaped aluminum alloy connectors.

(3)    Seat system:

Integrated blow-molded chairs such as Nova, Eco-L, Eco-M. The seats can be installed in a flat or vertical way.

(5)    Safety protection system:

The safety protection system includes rear guardrails and side guardrails. The height of the guardrails is not less than 1100mm, fully ensuring the safety of personnel. The column material of the guardrails is square tube 40*40*2.0mm, and the cross bar is rectangular tube 40*20*2.0mm. The structure is stable, with less materials. The simple guardrail can save costs. For all-aluminum grandstands, corresponding specifications of aluminum tubes are used as guardrails.

3. Structural load-bearing requirements

The designed permanent load of the grandstand is 420N/㎡, and the designed value of live load is 4000N/㎡. The design safety factor is 1.5. The influences of wind load, snow load, etc. on the structure are fully considered to ensure the safety of the entire system. The guardrail should be able to withstand a uniformly distributed lateral static load of 2000N/m. In addition to these parameters, all factors that may affect structural safety will be taken into account.

4. Steel surface treatment

There can be multiple choices for steel surface treatment methods: hot-dip galvanizing, powder spraying, or powder spraying after hot-dip galvanizing. Generally, hot-dip galvanizing treatment is done. In indoor environments, powder spraying can be used for treatment. According to needs, powder spraying can be carried out after hot-dip galvanizing.