【 Weak current College 】 pipeline construction drawings to read and do the installation budget basics (4)

(14) the casing and hangers

1. flow chart: reserved hole prefabricated casings, casings plugging holes

Steel antirust prefabricated stand

Pipe antirust prefabricated pipe

2. the unit of calculation, hanger, form 96 years 100kg estimate the amount of the fixed-beam.

3.13-79 General pipe rack is suitable for General piping; 13-80-cushion type pipe rack for chilled water system, does not include wood mat chromium, purchased by m2 (about 1900 Yuan/m3); 13-81 spring type pipe support applies to design special description of hangers, vertical displacement activities stand, fixed is not included in the spring of chromium.

Drainage UPVC pipe clamp is finished, you should put the hanger-fixed card equivalent in main material.

4. General filler pipe casings:

Packless steel casing: implementation of welded steel pipe installation in order to calculate the ratio of diameter m 2,

Waterproof casing: rigid, flexible

UPVC pipe collar:

5. pipes through wall casing with no padding, do not drain wearing floor heating pipe casing; do General filler tube, gas pipeline wear floor with asphalt, form the general packing sleeve

(15) pipe hydraulic testing and inspection

1. pipe hydraulic pressure test: the pipeline itself already contains a pressure test, construction design if required secondary pressure test and then do one of the hydraulic pressure test pilot scale, with liquid means a liquid other than water can be a water, pressure gauge and valve to the amortization of material into the valve, the pressure gauge 0.1 0.2.

2. the pipeline pressure test: conveying gas pipeline required for driving test, outside pressure and pressure testing of pipeline required.

3. pipe leakage test: suitable for transporting very toxic, toxic and inflammable media pipeline. Such as the indoor part of the gas pipeline.

4. pipe vacuum test: air conditioners, water tanks of copper tube, etc need vacuum test.

5. water flushing: all media as water pipes are required for water washing, heating pipe liquid water rinse, drain pipes do not.

6. pipe disinfection rinse: adapted to life in cold water, hot water and drinking water

If buried pipeline (drinking water): suppress, washing, disinfection

Underground fire suppression, flushing of pipelines:

7. compressed air blowing: outdoor natural gas pipeline in the finished hydraulic testing need sweeping

8. water-ball test: for sewerage pipes, closed water test is already included in the drainage pipe installation fixed. The water passes the ball test requiring a separate form, generally refers to the main tube drainage and risers (branch pipe needs to be done, but if you are sitting there, squatting and trunk pipe connection part needs to be done, that is, the pipe flow block objects to pass the ball.

9. pipeline pickling, alkaline wash: suitable for process piping

10. skim test: oxygen pipeline

11. inspection: such as municipal pipelines

(16) brushed insulation

1. cast iron radiators brush paint by 0.28m2/tablet.

2. manufacture and installation of insulation for pallets: originate condensation water standpipe; hook: transverse dry pipe diameter larger do hook; galvanized steel thermal insulation box used in valve, flange insulation.

3. direct buried insulating fittings suitable for outdoor buried pipe

Second, ventilation, air conditioning, fixed

(A) ventilation ducts and components: dynamic systems: blowers, back to fan; air handling systems; air transportation system: muffler, balance valve, air distribution system: blinds, vents, air

1. the ventilation pipe: sheet steel, fiberglass and composite

2. measuring principle: no deductions for elbows, tees, reducers; deduction of valve parts

Special: elbow vanes, measurement without deduction form production Assembly fixed; silencing elbows deductible form silencers elbow mount.

3. fire dampers, muffler, static pressure Chamber and silencers elbow cover hangers installed.

4. when the silencer at continuous install 2 section silencer.

5. static pressure box expand area calculation by pressing 6 sides, without deduction of openings.

6. rectangular duct concentric pipe when the side length (horizontal side) diversion must be set when 500mm blade.

7. inspection hole set location: duct is long and the first one; such as tail comfort air conditioning can not set; for temperature and humidity air conditioning needs; high efficiency air filter inspection hole you want set.

8. determination of holes: dry pipe and tube entrance located

9. system tightness: on-demand testing wind pipe calculation of area in m2.

A leaky air leakage testing not qualified, the amount of qualified

10. off-site transportation: take the m2, the only means a sheet steel duct, static pressure Chamber, shaded and Pan started area of water. Making offsite transport installation

On-site production installation finished, in consultation with manufacturers of air duct is a form of off-site transportation

11. flexible hose, regardless of whether a section of insulation.

(2) air outlet and valve parts

Pressure valve for cleaning system, steel hangers separately calculated.

Where the body itself with electric actuator electric valve, its installation shall then apply electric actuator installation corresponding to the item.

Exhaust air outlet and positive pressure air with executing agencies, 55 pages of exhaust air to use the installation item. Take remote control of exhaust air outlet installation form 55 page exhaust outlet installation and 58 page control device installation, Supplement main material. When electric and valve parts as one can only set a valve components installed, the main materials of the supplement. (Such as electric regulating valve can only set up leaves a leafy control valve installed, Supplement main material.

WindCap flashing

Flashing: the calculation of the area is divided into three sections: two straight pipe ends,

A trapezoid DH2H3a hbH1D1 exhaust hood

Fan belt cover exposed parts of the application, the application of outdoor part of fan motor waterproof covers.

Expand the area of the formula:

Round: F = 1/2 (D1 + D) * P * H3 + D * P * H2 + D1 * P * H1

Rectangle: F = [2-(A + B) + 2 (A1 + B1)] * H3/2 + 2 (A + B) * H2 + 2 (A1 + B1) * H1,

Where H = D or duct large length, H1 = 100-150mm, H2 = 50-150mm

(Iii) equipment and support

1. device fabrication and installation bracket: dust removal equipment, ventilators and other equipment installed at the bottom of the pad is not included in the materials and fabrication and installation, bracket should be calculated according to the design requirements. (Fan-coil and VAV VAV devices including hanger manufacture and installation, but not including steel brushed) composite duct and FRP wind pipe hangers can perform device bracket within item 20kg.

2. the device to the bottom of the pad material: rubber plates or channel

3. fan hanger: 130 pages fan hanger manufacture installation applies to Francis, diagonal fan hanger installation.

4. blower vibration platform make install to install fixed pedestal centrifugal fans, not including bolt chromium.

5. fan vibration platform and shock absorbing Suspender item does not include shock absorber and elastic hanger, should be calculated according to the design requirements.

6. fixed bearing and fixed to the wall of the fan bracket must borrow equipment fabrication and installation support.

Such as 5 # Francis fan installation (installation): 6-46 Francis fan installation, 6-70 fan hanger manufacture and installation. 5 # centrifugal blower installation (landing of the shock absorbing pedestal): 6-61 centrifugal fan installation, 6-73 fan vibration platform production installation.

7. household refrigeration units separately calculated bracket.

8. tetracarboxylic air conditioners apply to one outdoor unit multiple indoor outdoor machine installation, its indoor use fan coil (wall-mounted) installed.

9. plate closed door: commonly used in air handling equipment and purify the air duct.

10. the window type air conditioner installation does not include waterproof covers installation, such as design requirements prior to use waterproof covers installation.

11. the split air conditioner installation includes indoor and outdoor machine installation. Which the refrigerant in the refrigerant filling main materiel, the main materials of the prior calculations, not artificial.

12. the axial fan installation includes a metal bracket installation and wall mounting.

Bracket installation: floor mounting, wall mounting, the brace bracket making installing separately calculated.

Wall installation: does not include embedded parts, axial fan outlet pipe and elbow pipe outside the protective NET.

The duct form fabrication and installation of air duct,

3 artificial fee *

Protective NET form metal mesh box making an

13. centrifugal blower installation does not include belt enclosure and waterproof covers. 5 # within the direct connect fan does not need to add belt enclosure (fans, motor-one)

14. roof fan installation does not include the anchor bolts, if the device does not own the Foundation bolt.

15. cooling tower to overall consideration, regardless of the packaging cost, not including the holes bolt. Combined air conditioner does not include paragraph and section of Assembly costs.

16. high efficiency air filter including screen style rack and monomer takes over. Single nozzles type including filters and air tube tubular between production and installation costs.

(4) air defence

1. underground air defence in the blower, filter dust, muffler, muffler elbow, Tuyere, install both perform other sections of the item.

2. the wind tube only applies to air defense system, does not apply to purification system.

3. inside static pressure Chamber muffler materials: only applies to the muffled static pressure Chamber.

4. the defence closed casing: air defence in the filtrate indoor air defense wall you wear Department need to encrypt closed casing.

I type sealed casing: suitable for sampling tube, piezometer and compressed air pipe and corrugated duct directly pouring into the concrete wall casing

ⅱ sealed casing: applicable to metal duct does not directly pouring into the concrete wall casing

ⅲ sealed casing: duct through brick casing

Fixed without plugging holes in the fixed cost, implementation of civil engineering.

(V) brushed, insulation

1. the ventilation pipe and section steel brushed, spray paint and paint are performed the same item.

2. put inside static pressure Chamber, anechoic materials and design requirements of thickness can be converted to other unchanged.

3. inside static pressure Chamber muffler materials: only applies to silencers static pressure Chamber, a big square with a press launch of static pressure Chamber to m2 area.

4. the wind pipe and section steel brushed quantities by paint quantity calculation schedule.

5. Brush paint standard implementation of GB GB50243-97 and acceptance.

6. Brush paint: medium is less than 70 degrees centigrade of air: ordinary sheet inner surface brush 2 times antirust Primer (red oily), the outer surface of the brush 1 times antirust Primer (red oily) media above 70 degrees centigrade of air inside and outside surface of the brush: 2 x heat-resistant paint. Media and outside air for corrosive: surface brush 2 times more acid primer and 2 times more acid-resistant topcoat.

7. red lead-paint only applies to the black plate, shall not apply to galvanized steel plate. Galvanized steel anticorrosive General not brush (red), when the damaged brush zinc yellow epoxy primer. Zinc coated steel can be brushed, when design requirements can beThe brush coat (Matt). Black steel plate is not required for general design description, brush 2 times antirust paint, Ming installed part and then brush 2 again Matt.

8. hangers anti-corrosion treatment must be consistent with the practice of air duct, Ming installed parts must be brushed topcoat.

9. the ventilation pipe surface brushed: unit m2 surface with air duct for the net area. Ventilation pipe insulation and insulating layer outer wrap (packages) to protect shell, press duct calculation of net area in m2.

10. cleaning system insulation may not be able to use vacuum insulation materials such as fiberglass.

11. insulation inquiry should include thickness and density. Insulation material: rubber insulation, centrifugal glass wool, rock wool, aluminum foil centrifugal glass wool, polyurethane.