1 scope
This technology is applicable to buildings
electric lighting, plastics, flame retardant, flexible (corrugated) tube dark
laying. Not in places of high temperature, places vulnerable to mechanical
damage and laying of the roof.
2 construction preparation
2.1 materials requirements:
2.1.1 plastics flame retardant, flexible
(corrugated) pipe and fittings must be made of fire-retardant treated
materials, the tube wall should be spaced not more than 1M the continuous flame
marks and factory standards and product certification. Pipe wall thickness
uniformity, no cracks, holes, bubbles and deformations, and so on. Corrugated
pipe shall not be stored at high temperatures and open spaces stacker.
2.1.2 distribution box. General power
distribution box, tank shell of steel, corrosion prevention measures. Whole set
of distribution box shall be two certified manufacturers of products, product
certification.
2.1.3 switch box, outlet boxes, lamp boxes,
junction boxes, plastic boxes should look neat, complete knockouts, no
splitting phenomenon.
2.1.4 tube clamps, pipe clamps, designer
should use the flame retardant plastic products.
2.1.5 plated zinc material: flat steel,
round steel, wood screws, machine screws, wire, etc.
2.1.6 supplementary materials: paints, wood
bricks, Gordon, cement, sand, and so on.
2.2 the main tools:
2.2.1 hammer, chisel, and hacksaw, knife
saw, semi-circular file, hand drill, hydraulic opening, adjustable wrench.
2.2.2 level, box feet, Gray Ash bucket,
shovel, bucket, small line, line, high chair, etc.
2.3 operating conditions:
2.3.1 building horizontal and the thickness
of the wall line is playing well.
2.3.2 laying pipeline should work closely
with the construction work.
3 operational processes
3.1 process:
Prefabrication → → → tube pre box
positioning and so Kwun Wat
3.2 General requirements for pipe
connection:
3.2.1 tube and pipe connection:
Generally bellows are mating coupling for
pipe connections, connection tube counterparts should be at the center of pipe
straps.
3.2.2 tube connection to the box, box:
3.2.2.1 tube head connection: bellows are
supporting the pipe clamp head, can be used for pipes and connection boxes,
cartons.
3.2.2.2 list of connected: corrugated pipe
straight through the two holes in the box, constantly pipes. Template to
remove, cut the tubes after clearing the box, installed before the nozzle at
the thread protection.
3.3 operations: in accordance with design
dressed hooks, bolts and wood blocks, embedded parts, fixed boxes, boxes of
cards processed iron or bridge bar, and so on.
3.4 Pack, box positioning. According to the
horizontal line and wall thickness determination of boxes, cartons, rows, rows
of lamps should be ejected reticle determines the position lamps.
3.5 tube:
3.5.1 tube shall conform to the following
requirements:
3.5.1.1 according to the design of pipeline
laying the pipe direction, and should be laid along the shortest route and
should reduce bending.
3.5.1.2 the bending of the pipe should not
be greater than 90 °, bend radius should not be less than 6 times the pipe
diameter, bend shall not have folds, pockets and cracks, bend flat should not
be greater than the pipe diameter of 10%.
3.5.1.3 piping there shall be no visible
phenomenon, embedded in walls or concrete pipes, surface distance should not be
less than 15mm.
3.5.1.4 line straight line segment length
over 15m or right angle bend when more than 3, are indirect box should be
installed.
3.5.1.5 pipeline after deformation joints,
should set compensation device.
3.5.1.6 tube boxes, box, tube should flush
pipe Show box, boxes should be less than 5mm, and a tube of a hole, hole size
should fit with the pipe diameter.
3.5.2 tube method:
3.5.2.1 laid masonry wall:
A wall should be combined with corrugated
conduit in the wall. Upward tube, nozzle should be well plugging, and temporary
support rods (rebars) along the direction of laying the tubes started. For
making boxes, cartons smooth, accurate elevation, to laying pipe to the box,
box 100mm, wall in place, stable boxes, cartons, and pipe connections.
Keep boxes, cartons. Line or horizontal
alignment, boxes, boxes with the wall should hang level; and taking into
account the thickness of plaster, box, box flush with the plaster walls.
B mark Groove routed pipe segment, allowing
only vertical tick Groove, Tenon and a no reserve is too large, influence of
wall strength. Pick your front, should slot line on both sides, with cold
chisel tick. Wall of aerated concrete used saws saw blades on both sides, and
then tick. Slot width and groove depth is larger than the outer diameter of the
pipe 5mm is appropriate. Apply pipe, every 0.5M about using nails, thin wire to
the pipe fixed, must then be protected with intensity not greater than M10
cement mortar, thickness should not be less than 15mm.
3.5.2.2 precast floor slab laid on:
A prefabricated light on a plate with a
circular hole punch, should get a nice round hole from bottom to top for a; or
prestressed slab of laminated plate light punch, power hammer in the top hole
first, and then in the following reaming. Pore size is slightly larger than a
lamp box.
Conduit Circular box installed iron or
bridge card (laminated slabs prestressed piles of boards should be used or lamp
boxes), after installation of a pallet in the Board, with the strength of
cement mortar not less than M10 stability buried.
B to be solidified with cement mortar
tubes. When the double-layer bars, pipe should be laid between two layers of
steel, and should be reinforced at the end of laying. Line every around 0.5M,
from the lamp box within the 0.15~0.2m are fine wire or nylon lashing, binding
should be solid. For laying precast plate with a circular hole holes inside the
pipe, should be worn along the boards directly to the lamp box, boxes of buried
pipe cement mortar in prison. Laying of pipe cement mortar in the bedding
protection.
Tube into the wall with reserved should not
be too long. Upward tube steel stir up and blocked well pipe.
If ceiling fans, lanterns and other
embedded hooks or bolts.
3.5.2.3 within the concrete wall
installation:
A concrete wall boxes, boxes can be
installed iron card, card on rail welding of vertical reinforcing steel bar in
the wall, can also be drilled steel template, use wood screws on the box, the
box will be fixed in the template, after a concrete pour, remove drain screw in
a timely manner.
For making boxes, cartons elevation
accuracy, ensure the control box, box recessed wall depth or stable box, box
approach. With a simple wooden box, case or box instead of the box, in the box
embedded in the wall, after removal, remove the wooden boxes, cartons and
boxes, and stable box, box, and pipe connections.
B pipe laying in the middle of two layers
of steel. Vertical pipes should be along the same side of vertical
reinforcement laying straight horizontal pipes laid along with lateral
transverse reinforcement (note that reducing the impact of concrete pouring on
the tube).
Tube into the box, the box should be
blocking good pipe and plug good boxes. Line about every 0.3M, from boxes,
cartons 0.15~0.20m apply a thin wire or nylon solid banding location.
C when using sliding formwork construction,
by the switch box or junction box to light the pipe to the bracket inside the
wall, after sliding, shall promptly remove the tube, when the roof, causing
light.
3.5.2.4 laying the concrete floor:
A concrete floor boxes can be installed
iron rod or bridge, or use the wear bars, iron or bridge bar on welding in
steel. Can also be drilled steel template, use wood screws securing the box
directly to the template, after pouring concrete, remove wood screws in a timely
manner. As for the wood template, available nails, thin wire lashing the box in
template.
B pipe should be laid in two layers of
steel, the attachment bar at the end of the deployment. Tube into the box,
nozzle should be well plugging and plugging good box. Line about every 0.3M,
distance 0.15~0.20m within the box, apply a thin wire or nylon binding fixed
firmly.
Tube into the wall with reserved should not
be too long, and should block well pipe. Upward tube steel stir up down tube
while pouring concrete, it can reserve was vertically split with the wall holes
(approximately 100mmx50mm), or embedded casing after removal, under the tube.
When the masonry walls, then down to the boxes, cartons.
Such as fluorescent lamps, built-in wooden
bricks, if ceiling fans, lanterns and other embedded hooks or bolts.
3.6 pre-Gordon:
Pipeline laying is completed, after the
construction of walls, floor (concrete works should be removed after the
template), should be carried out promptly and so Kwun Wat. Gordon in the
process of implementation of the pipeline should be checked against the
construction drawing, and promptly deal with construction of the pipeline by
mistake.
General Gordon can use a thin wire or wire
cloth and so Kwun Wat, with thin wire or wire line after penetrating tube, one
end of the pipe fixed on the belt line strip, pulling away from the other end,
clear the debris, water pipe. Gordon after the nozzle should be well plugging,
and sealed the box.
4 quality criteria
4.1 project:
Bellows material and applicable provisions
must comply with the design requirements and specifications.
Inspection method: observation of concealed
works of inspection or inspection records.
4.2 Basic project:
4.2.1 connection close tube smooth, cover
more than 15mm.
Inspection method: observation, standard
checking and inspection of concealed work records.
4.2.2 box, box is set up correctly,
reliable, pipe into the box, box straight, box, box showing the length should
be less than 5mm.
Inspection method: observation, standard
checks.
4.2.3 piping through the deformation joints
compensator, compensator can move freely.
Inspection method: observation on concealed
works of checking and inspection records.
4.3 allowable deviation:
Pipeline laying and installation tolerances
boxes, cartons, as shown in table 3-4 below.
5 finished product protection
5.1 mark Groove, tick do not push too hard,
don't pick too broadly, so as not to affect structures.
5.2 bellows on the platform after the
laying, construction cart transportation through pipeline parts to be protected
to prevent bruising pipe.
5.3 due care when pouring concrete, repair
damaged boxes, boxes, or lines in a timely manner.
6 quality problems to be noticed
6.1 with the embedded box, boxes of civil
structure prone to skew, not full of depth and mortar phenomenon.
6.2 side installation box, the box is not
on the same level, beyond the allowed deviation. Should hang line stability
with accurate measurement, level alignment.
6.3 pipe into the box, the box office is
not straight, tube rough alignment. Margin boxes, cartons 0.15m pipe should be
fixed, boxes, broken pipe inside the box should use sharp knives, operation
should be carefully.
6.4 corrugated pipe bending Department
should appear flat or concave die bending phenomenon. Selection of high quality
pipes, tubing should not be long stored in the open air. Prefabricated building
panels embedded pipe with wall connection, should be staggered in the
horizontal direction and pipe bends floor and walls should tick into a curved
shape. Crook installed half flame retardant casing or use hard bend, to ensure
that the curvature.
6.5 when threading pipe clogging. Mainly
because there is no pre-Gordon as required or not serious when Gordon. After
Gordon, banged pipes in other types of construction. In addition to correct
things, pre-Gordon work strictly according to the requirements and strengthen
the work product protection.
7 quality records
7.1 plastics flame retardant, flexible
(corrugated) pipes and accessories, test reports and product certification.
7.2 corrugated conduit pipes pre-screening,
self-test, hidden inspection records.
7.3 change record of negotiation and
completion.
7.4 project for quality inspection and
assessment records.
No comments:
Post a Comment