Waterway Engineering
When conducting the Sheung Shui test, one by one, turn on the faucets in the kitchen and the bathroom to observe the amount of water and see if the water is open. If there is a hot water tap, also check if the hot water can flow out normally.
The launching test is more important than the Sheung Shui test. During the test, it is necessary to fill the tub, basin, and vegetable sink with water, and then remove the stopper to allow the water to produce the greatest possible water pressure on the pipe. If you find leaking water in the corners of the sewer pipes, etc., even if it is extremely slight, you should immediately handle them until the problem is completely resolved. Do not leave any hidden dangers.
In addition, all taps should be opened at the same time so that the maximum amount of water will flow into the underground water pipes. In this way, if the drain pipe is not open, the problem is more easily exposed. It is very difficult to find this problem by opening the taps for testing.
When conducting the water pressure test, for a high-rise apartment type, eight pressures should be entered. Within one hour, the pressure reduction should not exceed 0.05 MPa. For the bottom-floor apartment, you can enter 6 pressures.
Circuit Engineering
When checking the circuit, all powered devices must be turned on and the test circuit must be able to withstand this maximum load.
The test of the socket is also very important. It is not the compound “left zero, right fire, and ground†connection used to test the socket of the instrument. When the wiring is normal, press the leakage protection test button on the instrument to cause a momentary human short circuit, and then observe the distribution box. If there is a tripping phenomenon, it is qualified.
We use professional instruments to test weak currents such as network cables and telephone lines, and whether strong power such as sockets is unobstructed. The distance between strong and weak electricity should not exceed 500 mm. The distance between strong electricity and gas pipelines and gas equipment should be greater than 150 mm.
Test the lighting switch to see if the switch controls freely and the bulb has no damage.
Painting bricklayer
Wall paints and topcoats are generally checked by surface observations. Stand facing the wall 1.5 meters from the wall, the surface should be uniform color, no burr, no flow marks, no obvious brush mark. The surface of the wall paint should form a gas film, and there should be no exposed bottom.
If there is uneven color on the wall, this may be caused by uneven base treatment, or it may be caused by the incomplete brushing of the wall paint. When distinguishing, you can press your hand on the wall with a certain amount of force and stroke it again. If you feel a sense of concavity and convexity, it means that the base surface of the wall is not smooth; if the touch is smooth, it is a problem with the wall paint.
Measure the wall surface with a ruler. The flatness should be within 2 mm. The verticality of the wall can be measured with a wire drop. The yin angle in the room should reach 90 degrees.
No matter whether it is a floor tile or a wall tile, there can be no empty drum phenomenon, otherwise it will easily fall off in the future. Tile gaps should be uniform, straight, and beautiful appearance. In addition, the height difference between the seams of the tiles cannot be more than 0.5 mm. For the bathroom floor tile, it is also necessary to test its slope, splash water on the floor of the bathroom, the water should be automatically collected to the floor drain, self-discharge, the ground should not leave behind water.
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This micropipette enables true one-handed operation without changing the holding position: adjust volume, Pipette, remove tip.
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