【 Weak current college 】 building water engineering construction quality common failing

1, professional and kind of mismatch between
(1) since the terrestrial standard superior partial or adjustment, the project does not make the appropriate adjustments, resulting in a pipeline is reserved port, apparatus, equipment, etc. of superb bias;
(2) of the brick, column, stack size adjustment or deviation, resulting in the displacement, pipe pipeline; eat the wall or door sash opening and closing;
(3) the radiator, the walls are plastered and painted or supposes the decoration that is installed, the impact of the decoration project quality.
(4) because of the water and electricity specialized design mismatch, construction audit diagram do not thin, piping, equipment and electrical switches, sockets, and other facilities too close distance or overlap, safety and use;
(5) of the pipeline crossing the floor, useless and the concrete floor slab with grade according to the official process for plugging holes, cut off the main bar after mining efficiency measures, there is a hole in the ground, waterproof, waterproof pipe handle, causing leakage;
(6) vertical tube well, column hierarchy traversal does not meet the requirements of fire;
(7) waterproof finish, after tick Groove burrowing, buried pipe and drainage;
(8) laying is not considered and floor drain bath room and corridor ground height difference, are not considered ground slope, not considering the surface layer thickness, resulting in a floor drain, drainage and ground water down the slope effect floors and walls, waterproof performance.
2, water heating-bathroom common problems among workers
(1) the fixation of location, construction and fixed practices do not conform to the requirements;
(2), Toro, cradles, distance, elevation does not meet the requirements; fixed is not strong, uneven, and piping as well making rough contact;
(3) pipelines or branches of laying in the frozen soil or pier loose soil, buttress masonry does not comply with the requirements;
(4) piping support, child care, hanging metal equipment without rust and corrosion-proof, that is to be installed; or rust, corrosion protection, cleaning the grout not thorough, antiseptic and topcoat of passes is not enough, and partial leakage brush;
(5) drainage, heating, gas pipeline between locations or spacing does not meet the specifications;
(6) pipe slope variance, and even slope, reserve population, partial collapse or bending;
(7) pipe connection quality issues; welding and soldering; welding is not straight, strengthen the surface, a burn, crack. Blowhole, slag, and other defects; wire joints is not structured, broken wires, the exposed threads of the variance, hemp is not clear; galvanized pipe of the zinc coating is damaged;
Flange connector uneven, and bedding material specifications do not meet the requirements, sometimes double-layer or multi-layer pad;
Spigot or casing interface packing does not meet the requirements, grey cast not full deviation of dense, clearance is too large, even with a cement wash mouth;
(8) the hydraulic test, hipot test, leakage test of strength, the closed water and irrigation test questions; procedures and methods do not meet the requirements, the conclusion is not exact, Visa, and test site failure, leakage on bands or system; valve installation products failing to comply with the prescribed test sampling or in full, there are incomplete, missing items;
(9) primary materials, equipment, no factory certificate, no entry clearance.
3, the water supply pipeline installation problems
(1) fire and water sharing pipeline adopts non-galvanized carbon steel pipe, galvanized pipe with clarinet pieces;
(2) water supply pipe flow impeded, water turbidity, even plug; installation not seriously clear bore serrations, fracture or necking; clothing and swing not timely block, tanks do not spill water on time stamped; direct access to the sewer, water pollution; not complying with the provisions for irrigation and water testing.
(3) improper insulation material selection, lax or leakage, condensation produced;
Tank bottom, ceiling, Groove well, attic in movement and stopping, standing above the pipe end parts of first-class Office leak do insulation;
Material selection, construction of insulation layer thickness is not enough, take apogonoides does not meet the requirements, moisture-proof layer is not strict, or not doing the moisture-proof layer;
(4) straight flush toilet, the didn't bark too much money or did not install the air separator;
(5) fire hydrant estuary towards the wrong location, elevation, hose not complying with the provisions in place, hose binding does not meet the requirements;
(6) hot and cold water pipes or faucet, up and down or left or right.