Concrete dust can have negative effects on health when inhaled. The fine particles in concrete dust can irritate the respiratory system, leading to coughing, wheezing, and shortness of breath. Prolonged exposure to concrete dust can also cause chronic respiratory issues such as bronchitis or even exacerbate existing conditions like asthma. In addition, concrete dust may contain harmful substances such as silica, which can lead to lung diseases like silicosis when inhaled over time. Therefore, it is important to take precautions to minimize exposure to concrete dust, such as using proper respiratory protection and ventilation when working with concrete. **

Yes, a concrete foundation can typically support a scissor lift. However, it is important to ensure that the foundation is level, stable, and able to withstand the weight and pressure of the scissor lift. It is recommended to consult with a structural engineer or construction professional to assess the foundation and determine if any additional support or reinforcement is needed before using a scissor lift on it. **

To determine how many kilograms your concrete floor can support, you need to know the thickness and strength of the concrete slab. Typically, a standard concrete floor can support around 250 kilograms per square meter. However, for a more accurate assessment, it is recommended to consult a structural engineer who can evaluate the specific details of your floor and provide a precise weight limit. **

The weight capacity of a concrete floor depends on various factors such as the thickness of the concrete, the quality of the mix, and the reinforcement used. On average, a standard concrete floor can typically support around 250 kilograms per square meter. However, it is recommended to consult with a structural engineer or a professional to determine the exact weight capacity of your specific concrete floor. **

Yes, a concrete foundation can support a car lift. However, it is important to ensure that the foundation is thick enough and properly reinforced to handle the weight and pressure exerted by the car lift and the vehicles it will be lifting. Consulting with a structural engineer or contractor to assess the foundation's suitability for a car lift installation is recommended to ensure safety and stability. **

To apply concrete on concrete, the existing surface must be clean, free of debris, and properly moistened. A bonding agent or primer should be applied to the existing concrete to ensure adhesion. The fresh concrete mix can then be poured or pumped onto the existing surface and spread evenly using a screed or trowel. It is important to properly cure the new concrete to prevent cracking and ensure a strong bond between the two layers. **

Yes, it is possible to pour new concrete over old concrete as long as the existing concrete is in good condition and properly prepared. The old concrete should be clean, free of any loose debris, and roughened to provide a good bonding surface for the new concrete. Additionally, a bonding agent may be used to ensure a strong bond between the old and new concrete. It is important to consult with a professional to assess the condition of the existing concrete and determine the best approach for pouring new concrete over it. **

For setting lawn edging stones, garden concrete would be the better option. Garden concrete is specifically designed for outdoor use and is more durable and weather-resistant than concrete screed. It also has better adhesion properties, making it more suitable for securing the edging stones in place. Additionally, garden concrete is often formulated to be more resistant to cracking and shifting, which is important for maintaining the integrity of the lawn edging. **