What should I look out for if someone asks me if they can partner with my construction company?

Liability! You need to have a clear understanding of who has access to what. Do you trust this person? By becoming a partner you gain a lot of access to the other partners. In a good relationship, they can take care of things on behalf with only limited knowledge on your part. In a bad …

What will happen if you pour an asphalt sealer over a concrete driveway?

You will get a thin layer of asphalt or epoxy (if it is an epoxy type sealer) on top of your concrete. I wouldn’t expect a great finish as most asphalt sealers expect asphalt beneath them. It will probably grab well in some places but not in others. Also, it will probably stain your concrete …

Is it possible to use solid concrete blocks for foundation instead of size stone in loose soil condition?

Yes, but it isn’t your best choice. Using solid concrete blocks is very much like using stone walls as a foundation. Either the ground or the blocks will need to be shaped to meet the needs of the building. Mostly nowadays we use either reinforced concrete or reinforced concrete masonry units (CMU). Both of these …

What would traveling be like if the Earth were as large as the Sun?

Rather as several others have mentioned the Earth would have ignited as star under the force of gravity. Due to the “surface” temperatures, you’d get to experience travel as a plasma or a gas cloud. As you moved along an essentially turbulent ocean of similar material you would notice (if somehow you retained consciousness) that …

What is the size threshold for something tunneling underground to cause an earthquake, and what relationship might there be between tunneler size and the magnitude of the earthquake that follows?

The tunnel size does not impact an earthquake, or at least not as a first order effect. The collapse of a tunnel could create a sinkhole, but for most cases your tunnel very close to the surface and/or have a very large tunnel. Unless this was a large event you probably wouldn’t notice it if …