The first thing to consider when you want to build a private swimming pool is the size and shape of the pool. The size and the shape will depend on many 41 .Public pools are usually large and rectangular( 长方形的 ) or L-shape. But private pools, our specialty, are 42 and can be almost any shape — rectangular, kidney bean, round, oval, or free form. A private pool must 43 the design of a house and a garden, 44 the shape is important. The size and the shape of your pool will 45 depend on what you want to do in the pool: dive? Have a 46 for children to swim? Exercise? 47 cool on hot days? Just relax? We can help you 48 these decisions. Next, you must plan the details of your pool. Our engineers and architects can help you 49 this. They will survey your land, examine the ground, and look carefully at your house and 50 , then they will draw a detailed plan that is similar 51 an architect ’ s house plan. Then plans will include the 52 of drains, pipes, and water filter systems. Next , we must excavate (dig a large hole in the ground) and 53 the ground for concrete. Our 54 of pool builders is expert at this work. 55 t hey excavate, they will prepare a concrete floor. Then they prepare the walls of the pool with mesh reinforcement and steel form-work. Next they will pour or spray concrete 56 t he walls. The concrete needs to dry slowly and evenly. If it dries too 57 , it will crack. To finish the pool, you might want to add steps, ladders, a driving board, tiles, paint, and lights. You will also need to finish the area 58 the pool. You might want a paved area around the pool, a fence, and a garden. Be sure not to plant 59 near the pool: They will cause shadows and the leaves will drop into the water. Furthermore, the growing roots will 60 the concrete. Our designers and landscapers can help you with these final plants.