Can the 50 cm high and 30 cm wide, 8 m long earthen beam be removed after 10 days?

8 m span concrete beam demoulding time should be in concrete strength.

1. The demoulding time of the beam plate bottom mold with a span of less than or equal to 8 meters and the cantilever beam with a span of less than or equal to 2 meters is: when the average daily temperature is 5 degrees, the demoulding time is 20 days; When the average daily temperature is 10 degrees, the mold removal time is 14 days; When the average daily temperature is 15 degrees, the mold removal time is 11 days; When the average daily temperature is 20 degrees, the mold removal time is 8 days; When the average daily temperature is 25 degrees, the mold removal time is 7 days; When the average daily temperature is 30 degrees, the mold removal time is 6 days.

2. The demoulding time of the cantilever beam with a span of more than 2m and the beam plate bottom mold with a span of more than 8 meters is: when the average daily temperature is 5 degrees, the demoulding time is 50 days; When the average daily temperature is 10 degrees, the mold removal time is 40 days; When the average daily temperature is 15 degrees, the mold removal time is 30 days; When the average daily temperature is 20 degrees, the mold removal time is 28 days; When the average daily temperature is 25 degrees, the mold removal time is 20 days; When the average daily temperature is 30 degrees, the mold removal time is 18 days.

If it's this season, it's still a bit early after 10 days, and it's better to dismantle it after 15 days. In this way, the safety factor will be a little larger, and the quality of the beam will be a little better.

In the early stage of high-strength cement, the span below 8 meters is generally two weeks, that is, more than 14 days can be disassembled. The bottom plate above 8 meters must reach 100% strength, and it is better to wait until 28 days later to be safer.

The strength of cement is 45 days, and the strength is the best, and it can be folded until half a month.

Hello friends! It seems to depend on the local weather conditions!

May you be healthy and happy!

Depending on the geological conditions of you, the upper layers, the structural form. According to you, 50cm wide and 10cm thick is concrete cushion (architectural term).

Since the foundation beam is arranged, the reinforced concrete foundation should be arranged, so that the stress requirement of the foundation beam can be satisfied, and the plain concrete or brick foundation can not meet the requirements of the structure in terms of stress. A width of 50 cm is not sufficient unless drill data confirms that the structural force requirements can be met.

A: A total of cubic meters of concrete are required.

。Find the least common multiple of 30 cm and 20 cm is 60, (60 30) x (60 20) = 6 blocks. At least 6 of these tiles are needed to create a square floor.

The first problem is to find the area:

The second problem is to find the volume:

Answer: These floor tiles can be used to pave a total of square meters of floor; A total of cubic meters of concrete are required.