To install concrete floors, prepare rebar, vapor barrier material, straight edge, rubber boots, steel trowels, edging tool, concrete vibrator, bags of sakrete and type 1 cement. First prepare the foundation by lay outing the concrete slab by setting the stakes at the corner of the projected structure. The stakes must have grade marks to set the height of the forms. Create forms from wooden 2 by 4’s and half inch plywood and position the forms together with the use of double headed nails. Make use of stake to secure the forms. The forms are situate to grade by a string line pulled from point A to B, this will make certain that the formwork is level. Afterwards, identify how deep you need to go with the slab (Typical slab is four inches). Next, connect the string line to the top of the wooden forms (about every 12 inches). This string line is use to level the dirt floor and to insure the accuracy of the leveling. Then, extend the plastic sheeting(vapor barrier material) across the interior of sub grade, going down to all areas on the inside of the formwork. Next, install the re enforcing steel (typically #3 rebar) and make contact with a concrete company for delivery 3000 PSI concrete approximately 4-5 sacks per cubic yard of concrete. To mix the concrete yourself, buy a sakrete at local home improvement store and try to ask your friend to lend a hand and induce them with some great barbecue. Rent a concrete vibrator to use in consolidating the concrete, this will ensure also that the concrete is poured evenly and free from bubbles. Pour the concrete as dry as possible. Begin at one corner and work toward your exit. Start leveling the floor using the straight edge and make use of the pins that you set earlier to control the depth of the floor. Get a metal trowel and hit off the concrete at the top of one of the pins. Get a hammer, and force the pin down so it will not develop into a problem in the future. Repeat this procedure until all other pins are down to half of the floor allowing the concrete to partially set. Lastly, Get a smooth steel trowel and plywood pad (12-24 inches) and lay the pad onto the concrete and kneel down on it. The plywood must spread your weight. Smooth the concrete in a circular motion to give a smooth finish and make use of a misting spray bottle during finishing added with some dry cement (Type 1 cement) and sprinkle on the surface to give a nice slick finish.