A) Project description
System advantages
Description of main material properties
Reliable and optimized main materials, advanced and reliable process structure guarantee, high credibility professional certification.
The material is mainly made of maple. The United States NBA league venues are all maple. Maple flooring is the mainstream in sports venues in North America, Europe and Southeast Asia.
1. The main characteristics of maple are as follows:
1. Maple is a long-fiber tree species with unmatched toughness of other hardwoods. The horizontal and vertical shear resistance is the best. No thorns will be generated during processing and use, which can protect athletes from injury.
2. The hardness of maple is moderate, and the depth of the imprint after hammering test is less than that of other hardwoods. At the same time, it is not soft or hard, which makes people feel comfortable.
3. Due to the dense and uniform material, the maple wood pore-free water pipe is exposed, it is not easy to absorb moisture and deform, and the appearance is delicate and bright.
4. Bright color, natural color difference visual effect is the best, suitable for game and TV broadcast.
5. Because it belongs to long fiber, the density is evenly arranged along the floor board, the average wear resistance is good, and the service life is extremely long.
2. The main characteristics of oak wood are as follows:
1. The wood has a large specific gravity, hard texture, large shrinkage and high strength. The structure is dense, it is not easy to saw, the color is dark, it is easy to crack, warp and deform, and it is not easy to dry.
2. Moisture and abrasion resistance, difficult to glue, good coloring performance. At present, more decorative wooden floors are used. In recent years, the floor of stadiums has been used in a relatively small proportion.
B) Production technology and quality standards
1. Our company has imported solid wood flooring and composite solid wood flooring production lines with world advanced level from abroad. Its processing accuracy can reach as high as 0.1 mm, reaching the domestic leading level. The production machinery and equipment include the German drying kiln, the German Power brand heavy-duty four-sided planer, the Italian double-end milling, and the Dutch sand tying machine.
2. The company's wood flooring products have good performance. The wood flooring has been repeatedly qualified by the nationally recognized quality supervision and inspection station. The German DIN18032.2 performance testing authority, the German IST International Sports General Administration of Ground Science Society, has made various sports floor structures for our company Pass the test and the acceptance certificate of the State Sports General Administration of Sports Facilities Standards Office.
3. Advanced installation technology of wooden floor structure, convenient and fast maintenance, excellent selection of wooden floor materials, mature and advanced technology, and strong durability.
4. The company promises to strictly abide by the design requirements during the construction process, fully respond to the tender documents and take various quality assurance measures, and strictly implement the following standards:
GBJ206-83 "Code for Wooden Structure Engineering and Acceptance"
GB50209-95 "Code for Construction and Acceptance of Building Ground Engineering"
TY / T3.1997 "Quality Inspection Standard for Sports Wood Flooring"
German DIN18032.2 stipulates the sports performance of sports wooden floors (mainly ball rebound, shock absorption, friction coefficient, rolling load).
â—† Ball rebound indicator: refers to the percentage of the standard basketball rebound height on the wooden floor and the rebound height on the concrete floor, our floor system reaches and exceeds 90% of the standard.
â—† Vibration absorption: refers to the percentage of the rebound force received by athletes when they fall on the wooden floor, the vibration absorption is greater than the standard
53%, help protect athletes and reduce injuries.
â—† Friction coefficient: reflecting the slippage characteristics of the floor surface, too slippery or too astringent floor is not conducive to the movement of athletes, our company's products are usually within 0.4 ~ 0.6 specified by the standard.
â—† Rolling load: Reflects the ability of the floor to withstand athletes and other loads, our products are usually higher than the standard value.
Three), quality assurance measures for sports wood floors
Management measures
1. Our company has specially hired many sports wood flooring experts and wood processing professional engineers who have been working for many years, and at the same time, there are direct guidance from the State Sports General Administration Standard Office and senior experts in the construction of sports halls.
2. The wooden floor and other main and auxiliary materials are all produced according to strict technology. After the team self-inspection, workshop random inspection, the company's quality inspection department general inspection is qualified, the product can be shipped from the factory, and there is a product certificate and quality inspector stamp.
3. Adhering to the principle of good faith, our company has established good cooperative relations with many units. After the project wins the bid, it will communicate with the bidding unit (or project contracting unit) in time for technical disclosure before construction.
Four), sports wood floor construction process description
1. Construction conditions
1) Before the construction of the wooden floor, the civil works must be completed and cleaned up, and the quality of the ground construction must meet the design requirements of the architectural drawings.
2) The installation of indoor water, electricity, steam, etc. is completed, especially the water network pipes must be subjected to pressure experiments to confirm to meet the design requirements, and normal use will not affect the wooden floor.
3) The interior decoration ceiling, ultrasound, electroacoustics, lighting and other projects are completed to avoid the impact on the wooden floor construction during cross construction.
4) Ground humidity or equilibrium moisture content is basically consistent with the outside world.
5) In order to cross construction with other types of work, Party A shall be allowed to arrange them uniformly.
2. Construction preparation
1) Construction tools and instruments: theodolite, spirit level, woodworking universal machine tool, portable electric planer, portable high-speed cutting saw, polishing machine, nail gun, air compressor, hand ruler, 3 m straight ruler construction woodworking commonly used tools.
2) Materials and materials: All the necessary materials before construction must be transported to the place designated by Party A, and properly stored according to product performance requirements, and the stored energy should meet the construction progress.
3) Inspection of construction conditions: To check whether the construction conditions are met, and to record the matters that do not meet the construction requirements, Party A shall order the relevant departments to resolve them within a specified period and clarify their responsibilities, especially water, fire, and theft.
4) Compilation of relevant systems such as construction progress and site management:
4.1) Compile the construction schedule: compile the construction schedule according to the plan. Report to the contractor and the supervision team for review and filing.
4.2) Set up a construction team: divided into a carpentry group, a paint group, and a general worker class. Make technical explanations and determine the responsibilities of the team.
5) Other items:
Strengthen the education of fire prevention and other techniques, especially comply with the system of other units on site.
3. Draw the line of keel and cushion
Draw the location lines of the main keel and the cushion according to the drawings, and make special marks with the cushions at every 3 meters from the center of the site to the surroundings as a reference point.
4. Testing site
Use a spirit level to measure the height error of the cement ground on the reference point, make a record at the same time, and mark the height value on the cement ground of the reference point.
5. Install shock-absorbing rubber pads
Install a 10mm thick pad at the reference point. The elevation error above the reference pad does not exceed -1mm. Use the veneer to level the error and use a level to calibrate.
6. Install other wooden mats
Use an aluminum alloy flat ruler with a length greater than 3 meters (or pull the horizontal line). Transversely and longitudinally cross the two reference pads, then place other pads under the aluminum alloy flat ruler according to the line drawing position, and level them at the same time, the same height as the reference pads, and the same leveling.
7. Install the keel
Place the 4 × 5cm (other sizes can be matched) pine keel on the rubber pad according to the line, use 50 # steel nails (optional other models), the shock absorption rubber pad, leveling pad and keel nail to death. Use a 3-meter ruler to level the top of the keel with a 3-meter ruler-2mm. The keel is brushed with fireproof material on all four sides (the double-layer keel is placed in a chevron shape and the rubber pad is placed between the two layers of keels, which is fixed with 50 # steel nails (optional other models), the keel spacing is 400mm)
8. Install wool floor
Stagger the multi-layer solid wood flooring from each other and lay it on the main keel with 60mm round nails diagonally.
9. Shop moisture-proof pad
Lay the moisture-proof mat under the rough floor without discount.
10. Paving floor
Nail the ground floor with a special floor into 45-degree oblique nails, and nail it to the wool floor, which requires a straight line in the longitudinal direction, and the joints should be staggered from each other.
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