1. Melon seed slices, prohibited
2. Recommendation: Cement strength is above C20, cement/sand ratio is 1:2:2.5
You can listen. to the workers, because he is more professional on the question of the resistance of the cement.
Explanation: Melon seed slices are used to save money because sand is expensive. If you don't mind the expense, you can just use sand.
Answer: sauna and underfloor heating. If you have any questions, you can also check my blog post on Baidu Space
Water heating is safer.
1. From a cost perspective. When the heating area is more than 50 m2, it is recommended to use water heating, and the installation cost is relatively fixed. The gas furnace for heating water can solve the problem of domestic water at the same time, and there is no need to buy a heaterelectric water at home. However, the cost of installing electric heating is linked to the surface area. It uses electricity as a power source and is affected by the current from the household meter. The operating cost is high and is suitable for installation in a small area.
2. Seen from ground height. The liquid circulation system is generally 5 to 6 centimeters of the building height, and the electric floor heating is generally 2 to 3 centimeters of the building height. Underfloor heating takes up 3 cm less floor height than water heating. In order to reduce living depression, houses with lower floor height can consider underfloor heating.
3. In terms of post-maintenance. The lifespan of plumbing can reach more than 50 years and it must be cleaned every 2 to 3 years on average. Post-maintenance of electric heating, aging of heating tubesElectric heating and long heating time can easily reduce the heating effect or even have no effect.
4. From a security point of view. Water heating is safer, while electric heating can have radiation issues. Electric heating, ventilation and electricity will produce magnetic fields. Prolonged exposure to strong magnetic fields is expected to cause some damage to the human body. If electric heating is installed, be sure to pay attention to the radiation detection data provided by the merchant.
Classification of underfloor heating
1. Floor heating can be divided into liquid circulation system and electric floor heating according to the heating medium.
2. Functionally divided into ordinary floor heating and far infrared electric heating film floor heating.
3. From the point of view of structure of paving, it can be divided into wet floor heating and dry floor heating. Dry underfloor heating does not require a backfill layer and generally requires a floor height of around 4 cm. Wet underfloor heating has a backfill layer and requires a floor height of approximately 8 cm.
4. Judging from the surface decoration materials, it can be divided into floor heating and tile floor heating.
The difference between underfloor heating and circulation systems
1. Different structures
Plumbing mainly consists of boilers, main distribution pipes, underground water pipes, radiators and thermostats. , Consisting of connection accessories and auxiliary materials. The electric heater mainly consists of three parts: the main heating material (including carbon fiber membrane, carbon crystal membrane,carbon fiber cable, heating cable, etc.), thermostat and auxiliary materials.
2. Installation cost and use
Plumbing prices are relatively fixed. Generally speaking, the larger the heating surface, the lower the single-sided construction cost. The smaller the heating surface, the higher the cost of single-sided construction. Electric heating is basically a unified price, so this problem does not exist. Due to installation conditions, apartment type, roomDue to differences in building insulation structures and other aspects, usage costs vary significantly and must be calculated based on the conditions real localities.