Track and field inner ring ditch side wall construction method

There are two main types of inner wall ditch side wall designs: reinforced concrete structures and masonry structures. Each has its own construction process and requirements, depending on the project's needs and environmental conditions. In the case of reinforced concrete structures, it is essential to pour at least 10 cm of wall concrete when pouring the floor slab. The process involves placing a cushion of concrete along the side walls, marking the line for the side walls, supporting the foundation formwork, binding the reinforcement for the bottom plate, and inserting cement blocks into the concrete. After the foundation concrete is vibrated, the first layer of the side wall formwork should be erected immediately after vibration. Alternatively, 10 cm x 10 cm square wood can be used instead of traditional formwork in certain cases. This section of the side wall serves two main purposes: it strengthens the root of the side wall and ensures stability, and it allows for the proper installation of side wall molds. As shown in the diagram, the side wall molds are typically combined with steel forms and wooden supports. The concrete pouring method involves pouring both walls simultaneously, with each layer being between 30 to 40 cm thick. A plug-in vibrator is used during this process, ensuring that it does not come into contact with the reinforcement or the formwork. When lifting the vibrator, it should be done slowly to avoid creating voids. Proper vibration ensures that the concrete settles correctly without over-vibrating, which could lead to segregation. At the same time, concrete test blocks must be made. These blocks are typically 15 cm x 15 cm x 15 cm in size, with three blocks per batch, and they are cured under standard conditions for 28 days before testing. For masonry structures, the process begins after the concrete floor has been poured. The height and measurement lines are marked, and the masonry work starts from the lowest point of the inner ring ditch. Since the drainage gradient and the height of the side walls may vary, it’s important to adjust the block thickness accordingly. This helps maintain horizontal joints throughout the wall and prevents slanted seams. Additionally, adjustments can be made in the middle of the wall to ensure even alignment, as illustrated in the diagram. Masonry mortar must meet specific standards. It should use Portland cement, ordinary Portland cement, or slag cement with a grade higher than 325. The sand used should be clean, medium to coarse, with less than 3% clay content, and mixed with drinking water. Lime-based mortars or mixed cement-sand mortars should not be used. The mortar mix must conform to the design specifications. The quality requirements for the inner ring ditch include concrete compressive strength, mortar compressive strength, gully elevation, groove width, and wall verticality. These are tested according to established standards, with specific tolerances and testing frequencies. For example, the compressive strength of concrete and mortar must meet the design requirements, and measurements such as gully elevation and groove width must stay within ±10 mm. Verticality of the walls should not exceed 10 mm, and these tests are conducted using appropriate tools like leveling instruments and rulers. It’s also important to note that all strength tests for mortar and concrete are carried out according to industry standards, and the detection points are randomly selected to ensure accuracy and reliability. By following these procedures, the structural integrity and performance of the inner wall ditches can be guaranteed, meeting both functional and safety requirements.

Spit Roaster

We offer many models of spit rotisseries for cooking. Our range also includes a selection of different sized spits for all types of uses and entertaining, such as Mini Spit Roaster, 39" Spit Roast, 43" Spit Roaster, 52" Spit and more. We believe charcoal cooking on a spit roast is the most entertaining and hassle free way of cooking for a large number of people. Whether you are cooking a whole animal such as a hog or lamb, or enjoy making your own shashliks or kebabs, we have a spit rotisserie that will suit your needs.

Mini Spit Roaster,BBQ Spit Rotisserie,BBQ Spit,Rotisserie Spit

Dongguan Jaxen Metal Products Co., Ltd. , https://www.jaxenbbq.com