Weak current College】 【drainage and fire sprinkler system construction notes.

<br> 1. pipe buttress, bracket, drag-and-hanger manufacture installment <br> 1. brick Pier without cement mortar dry brick masonry, barrier. <br> 2. brick masonry buttress with hollow brick <br> 3. bottom .drainage pipe elbow buttress support does not close. <br> 4. use gas welding cutting, cutting holes in the bracket. <br> 5. bracket produced before the construction site without measurement, calculation of not carefully, not good. Pipe installation, .clasp, drilling holes dislocation, tube frame appears on the phenomenon of waste holes. <br> 6. wall riser card u-card bracket plant located in the lateral tube. <br> 7. plant located in concrete wall on the fixed tube stent .expansion bolts exposed wire is too long. <br> 8. in the install good bracket side welding fixtures, plumbing, a dual purpose. <br> 9. laying in the trench, ceiling with thermal elongation of the insulation level piping, no- .slip, and slide the bracket. Pipeline directly fixed on the stand. <br> 10. There are thermal elongation of piping hangers, hangers are not in the opposite direction to the thermal expansion of the design and the relevant provisions of the offset. < .br> 11. in the same room of the riser bracket, has no special requirements for elevation, distance, is not installed on the same elevation. <br> 12. plastic and composite pipe bracket, spacing, planted in accordance with the regulatory requirements .. <br> 2. piping installation: <br> 1. basement or ground floor there is a pipeline across the exterior wall structure, not the design requirements and criteria for mapping install waterproof jackets, waterproof casing installation height, coordinates is not accurate, .not flat. Impact-proof effect. <br> 2. piping through structural expansion joints, seismic gap and settlement joint laying, seismic, settlement did not take protective measures. <br> 3. pipe through floors and heating pipe wall, the leak .is not in accordance with the casing, toilets, water-proof rooms, residential Office casing out horizon elevation request placement. <br> 4. casing for electrical welding cutting unevenness. Casing and the gap is not a pipe or burning material filling, gap .width inconsistent. <br> 5. pipe connection has great silk filament phenomenon, exposed silk mouth too long, exposed to the specification requires 2-3 buckles of control is not strict. <br> 6. flange bolts, diameter and length do not .comply with the standards after the outburst, tighten the nut is longer than the norms. Place double gasket or under the nut without gaskets. <br> 7. hoop (sets)-connect two tube-side gap unevenness, the groove depth, not .uniform, not bolted on, after the pipe clamp (sets) of the installation directions are not consistent. <br> 8. when the gasket convex flange connections into the tube and placed in the double cushion, mat. <br> 9. adhesive .pipe, pipe mouth wash gel uneven, with the slit spout. Soaks up sagging pipe plastic not timely clean. <br> 10. water service pipe and drainage discharge pipe laying of horizontal spacing, vertical spacing is smaller than the specification requirement; water supply .pipe laying in the drainpipe is not required by the specifications below an additional casing. <br> 11. through the pipe under the floor beams, beams and tubular spacing is less than 150mm. <br> 12. horizontal drainage pipe slope control, beyond .the minimum slope, grade, slope; tube connection not flat, partial down-slope. <br> 13. adopt norms require sewage cast iron pipe slope, used in domestic sewage pipe installation, resulting in plastic riser tee from the roof near the beam .cannot be successfully passed. <br> 14. drainage plastic pipe is not in accordance with the design requirements and specification provides for installation of expansion joints; set collar or fire resistant casing. <br> 15. horizontal drainage pipe is not in accordance with .the provisions on distance wall flat standard distance setting sweeping mouth. <br> 16. snorkel higher roof height is inconsistent, the spout is not smooth. <br> 17. on the roof plastic casing out snorkel steel roof height (500mm), cannot .protect against shaky measures. <br> 18. risers vertical control, beyond the stipulated requirements. <br> 19. plastic pipe and tube skin susceptible to injury pollution pipe can not be timely wrapped around wrapped protection, skin injury, unable to fix. .<br> 20. do not follow the specification planted set pipe rack, used the load-bearing walls, substitution bracket. <br> 21. the heating pipe laying, slope control not strictly, to design and specification requirements. <br> 22 .. the heating ring tube welding eccentric reducer, eccentric orifice is not properly installed; pipe reducer without steam, bake and swing welding size pipe directly touch the port connection. <br> 23. heating dry tube angle bending deformation, ovality is not controlled in .the stipulation scope. <br> 24. the heating pipes and swing back and forth next riser bend stewed with cold, indentation, deformation, ovality beyond standard requirements. <br> 25. pipe welding, fixed measures inappropriately, cooling time is short, .welding is not formed, welded joints at collapse phenomenon. <br> 26. welded tube weld did not meet the requirements, slag, crater and porosity, and other defects. <br> 27. welding on hangers, casing. <br> 28 .. valve installation is easy, not easy to maintain and take up the space effectively. <br> 3. health apparatus installed: <br> 1. connect health apparatus drain-coordinate location of the control, and influence health apparatus of emissions from the .installation. <br> 2. installation of the drainage Plug and floor drain, high drainage surface, ground, floor drain water height less than 50mm. <br> 3. health apparatus of the bracket is not secure, not flat, and health apparatus .close contact is not smooth. <br> 4. connect the toilet of the mortar for paving uneven, rough, and the toilet is not connected to a closed position, not flat. Connection bolts toilet does not install the stool soft, shaky. < .br> 5. squatting Pan intake rubber Bowl no use 14 # copper wire binding two staggered, flushing tube insert Cup angle. <br> 6 £ ® dripping water tank and toilet connection does not close, there is leakage of water. <br> .7. health apparatus installation height, horizontal, vertical control is not within the scope of the provisions. <br> 8. sanitary ware faucets, valves and installation height, distance beyond the specification allows. <br> 9. connect health apparatus of drain .slope up to the stipulated requirements. <br> 4. indoor fire prevention the installation: <br> 1. fire hydrant outlet Center distance ground size control is not in the scope. <br> 2. fire hydrant outlet installation in door axis side .. <br> 3. valve Center box side, the inner surface of the box after provides size control is not strict. <br> 4. eliminate fire box box installation is smooth, not firm. <br> 5. and the civil suit .is not in place, construction and repair holes, extrusion bricks, body deformation, fire hydrant box installation. <br> 6. with self-help with short-tube opening low, installation maintenance inconvenient. <br> 7. fire hydrant box aluminum .frame, barrier gate with fire zone and fire hydrant outlet connections. <br> 8. open the left door, right positioning, for fire protection design reverses the effects of the installation location, use the function. <br> 9. no elimination of .fire door "fire hydrant" logo. <br> 5. heat sink installation: <br> 1. set the smoothness on the heat sink is not up to tolerance requirements. <br> 2. install the radiator bracket hook is not secure, .not flat. Bracket hook not complying with the provisions set the number of rotations. <br> 3. Group on heatsink gasket material does not meet the design requirements; group exposed to greater than 1 mm after gasket. <br> 4. same model .number from the back of the heatsink installation, radiator and decorate the wall after the surface is not uniform within <br> 5. underground laying of the coil part there are buried. <br> 6. heating plate bending some hard bend radius of curvature .of the phenomenon that is not up to standard. <br> 7. connect the radiator lights fork bending using cold pressing clear, large oval degrees beyond the deformation of the specification. <br> 8. the heatsink for the return pipe no slope, .down-slope. <br> 9. the pipes over 1.5m, leakage planted set bracket. <br> 6. automatic sprinkler system: <br> 1. pipe installation without timely clean debris inside the pipeline. <br> 2. pipe .laying, no design requirements for pipeline of center line and beam-column joints, floor of the minimum distance, control not to standardize the requirements. <br> 3. pipe diameter equal to the greater than 50mm, no paragraph of irrigating dry pipe or .pipes and pipeline changes direction, not by the addition of baffled bracket. <br> 4. pipe bracket installation location, the sprinkler nozzles. <br> 5. pipe hangers and the distance between the nozzle is less than 300mm. <br> 6 .. piping through the building of deformation on every, not Flex. <br> 7. pipe through the wall and floor, not complying with the provisions of additional casing. Casing and piping of clearance did not use nonflammable material to fill it. <br .> 8. pipe welding girth is located in the casing. <br> 9. horizontal installation of the pipeline, no slope drain 0.002-0.005 slope. When local area are difficult to use drain, did not take appropriate drainage measures. <br> .10. the nozzle is less than or equal to 5, in the pipeline leak low valleys located drainage plug. Nozzle amount is greater than 5, the installation of belt valve leak drains. <br> 11. a sprinkler installation, do not use a .dedicated Board, use of nozzle framework tightening. <br> 12. a sprinkler installation splash plate and ceiling, doors, Windows, entrance or wall distance does not meet the design requirements. <br> 13. splash plate above the head and the nearby .beam width is less than or greater than the bottom 1.2m ventilation pipe VSMP, nozzle splash, high, and beam, the ventilation pipe VSMP maximum vertical distance and specifications require the installation of control is not strict. <br> 14. the nozzle is .installed in the top of the next paragraph, nozzle and the horizontal distance from the next paragraph and the minimum vertical distance does not meet the specification. <br> 15. alarm valves and hydraulic alarm, water flow indicator, signal valve, the throttle devices .and other components of the installation does not meet the design requirements and specification requirements. <br> 7. Paint insulation: <br> 1. Rust cleaning dirty, paint coating adhesion, has fallen off. <br> 2. uneven color of paint .Daubs, blistering, flows and missing coating defects <br> 3. welding exposed silk mouth not timely do anti-corrosion treatment, coating antirust paint not uniform, craters not neat. <br> 4. pipe insulation, heat insulation joints not stagger, .help ligation not tight, the thickness is not consistent, rugged. <br> 5. fixation, valve, valve and live connector sides not according to specification, leaving a clearance, do slopes. <br> 6. protection and thermal insulation pipe wrap .does not close, not sleek, parcel width inconsistent, evenness is not up to the specified requirements. <br> <br> <br> <br>.