Scope of application: the completion drawing of the main pipe of the water supply network, the completion drawing of the water supply in the community, the completion drawing of the branch pipe, the location map of the sluice gate and the fire hydrant under the jurisdiction of the pipe network branch.
Pipelines above DN500 (including DN500) should draw the as-built drawings of the longitudinal section separately while drawing the as-built drawings of the plane, that is, the as-built drawings of the longitudinal section should not be drawn in the same drawing as the longitudinal drawings.
The text of the as-built drawings listed in this standard shall be marked with imitation Song characters, with the prefix facing up or to the left, not facing down, and the drawing surface shall be neat, the handwriting shall be clear, and the layout shall be reasonable.
The as-built drawings within the scope of this standard, except for the sluice gate and fire hydrant location map, are marked with the north arrow according to the drawing method, marked in the upper left corner of the drawing, and use the north direction above or above the side of the drawing as far as possible.
The topographic drawing method in the as-built drawings within the scope listed in this standard shall conform to the provisions of the national standard GB/T20257.1-2007 "National Basic Scale Map Schema Part 1: 1:500 1:1000 1:2000 Topographic Map Schema", and all kinds of pipelines, diagrams, and pipeline facilities symbols shall use the company's unified legend symbols and standards.
The pipe diameter of the as-built drawing within the scope listed in this standard shall be expressed in the nominal diameter "DN", and the size unit shall be in "meters" except for the pipe diameter in "millimeters".
Various as-built drawings are measured: both the bolt point method and the analytical method are used. Among them, the as-built drawings drawn by the analytical method shall be accompanied by the as-built survey registration form and the measurement technical description.
Sheet standards and numbers for as-built drawings:
Drawing sheet standard: generally adopt the company's unified standard drawings (except for special circumstances).
1. The as-built plan and longitudinal section of the main pipe are adopted: 810mm×297mm bar drawing. (No. 3 figure lengthened) when encountering the bend of the pipeline, the drawing can be separated by the drawing line and then divided into tiles, so that the drawing remains rectangular.
2. Dry pipe completion icon:
Note: *(1) All signatures must be signed by the person and carbon ink.
(2) The title bar should be 180mm wide and 50mm high.
3. The as-built drawing of the user branch pipe is adopted: the unified branch pipe user installation record account page of the whole company, if the account page can not be drawn, the formal drawing paper can be selected according to the situation, the size depends on the content, but the frame and icon must be used.
Branch as-built icon:
Note: *(1) All signatures must be signed by the person and carbon ink.
(2) The title bar should be 180mm wide and 45mm high.
Number and connection of the picture frames:
1. The numbering of the drawing sheet is numbered from the starting point to the end point, all marked in the upper right corner of the drawing sheet, which needs to be consistent with the design drawing, when the same project is constructed by more than two units, the as-built drawing can be numbered separately according to the order of the design drawing, but the confluence of the two construction units must be indicated separately The incremental distance and connection description of the first and last points of the two construction units must be indicated.
2. The form of sheet numbering adopts the following method:
3. When the amount of a project drawing is more than two, the tile connection line should be drawn, the length of the drawing line should exceed the terrain, the range width of the pipeline, the two ends of the drawing line should be drawn with symbols and numbers (the number is Roman numerals), and the connection of the two drawings and pipelines should be marked with the same incremental distance between the end point of the above drawing and the starting point of the following figure. (See image below).
4. The connecting lines of the two drawings should be completely consistent, and the terrain, roads, center lines, pipelines, etc. should be connected smoothly.
Dry pipe completion icon painting content and standards:
1. The content and standard of the general plan icon
1.1 The number of the same engineering drawing sheet is more than three (including three), all of which should be made as a general plan, and the 1/2000 scale or non-scale schematic diagram can be used.
1.2 The general plan should focus on reflecting the overall picture of the scale of the project, the main terrain is plotted on the map, the starting and ending points of the main pipelines, equipment points, feature points, and marked with the incremental distance of each point, when the same project is constructed by more than two units, the construction unit or project department needs to designate a construction unit to draw the general plan, and the construction unit and the incremental distance of each section of the pipeline are clearly indicated on the map, especially to highlight the incremental distance and connection method of the pipeline connection of the two construction units.
1.3 The scale should be indicated on the figure (if there is no scale, "schematic diagram") should be indicated), the north arrow and the necessary text description.
2.1 Take the current topographic map of 1/500 scale as the basic map, if the existing construction drawings do not reflect the current situation, it should be repaired and surveyed, and the city coordinate grid and corner coordinates should be indicated on the map.
2.2 The topographic extent of the strip topographic map is 20 meters outside the planning red line of the first row of buildings on both sides of the road or on both sides.
2.3 plot the center line of the planned road and the planning center pile (mark the coordinates and numbers of the center pile), the planning red line on both sides, and indicate the planning distance between the pipeline and the planning center line or the road sideline, and indicate the name of the street, lane, building name, house number and key departments.
2.4 indicate the direction of the pipeline, increase the distance, and mark the type, specification, burial age, and material of the pipeline with a pulling flag, and mark at least one for each drawing or different caliber section, and the pipeline of the same caliber but not connected on a map should also be marked one for each road section. As:
2.5 indicate the equipment points and feature points of the pipeline, and the branch pipes and branch pipes of each caliber along the line must indicate the registration number of the connecting pipe or the name of the connection system, and draw the connection completion drawing separately (indicate the name of the main pipe project on the map), the branch pipe above DN75 and the branch pipe should be plotted according to the provisions of the node and bolt point size, and the branch pipe below DN50 should be plotted on the main pipe diagram to plot the connection form, which can not be marked, (see the branch pipe connection diagram for the specific bolt point size), after the completion and acceptance, the main pipe diagram and the branch pipe connection diagram shall be handed over to the management unit together.
2.6 Draw various equipment points of the pipeline, bolt points or bolt point schematic diagrams of feature points, node sample drawings, local elevation node diagrams and side diagrams, etc., and draw stereoscopic projection drawings if necessary.
2.7 When the newly laid pipeline crosses with the original unconnected pipeline or other pipelines and lines, its location should be truthfully reflected on the as-built plan, and if necessary, it should be represented by elevation and stereoscopic projection.
2.8 All projects that are part of the adjustment of pipelines should reflect the abolition, gate, closure, and blockage of the original pipelines on the completion plan, and make the necessary flag pulling and marking the bolt points.
2.9 Compass, legend, icon, scale, necessary text description, and the person in charge shall review and sign.
Drawing standard of dry pipe as-built plan:
1. Positioning and bolt point requirements of pipelines, equipment points and feature points:
a) Gate wells, manholes, flow measurement wells, fire hydrants, inspection wells, drainage wells, air bleed holes, water stop plugs, gate wells, water meter wells, tees, elbows (including upper and lower reverse elbows), crosses, reducer points, pipe change points, plugs, start and end points, and intersection points should be bolted in three intersection directions, and the right-angle bolt point method can be used when unconditional.
b) Positioning of bolt points: the pipeline is centered on the pipeline, equipment points, feature points, facilities and parts centers, and the error between the measurement point and the actual pipeline point shall not exceed plus or minus five centimeters;
c) The distance from the planning center line or side stone should be plotted in the pipeline, and there should be enough positioning size, the distance between the straight line and the positioning point should not exceed 150 meters, and the pipeline should not be less than 3 positioning points at the slow turn, and should be distributed on the starting and ending points and intermediate points of the arc, when the arc curvature is large, the positioning point should be increased, and the density should be based on the principle of ensuring that the positioning error of any point on the curve is not more than 0.2 meters, so as to reflect the arc characteristics of the actual slow curve;
d) feature points, equipment points, positioning points in the condition, should be used in three intersection directions for bolt points, as far as possible to measure the horizontal distance, the distance is generally within 30m (unconditional according to the actual situation), the distance should be accurate to centimeters, the intersection angle between 30 degrees - 150 degrees, the diameter of the inscribed circle of the intersection angle should not be greater than 5cm, when the pipeline is parallel to the building, the distance between the parallel building and the distance from the vertical foot to the building vertex can be measured;
e) When using the analytical method to draw the as-built drawing, it is necessary to pull the flag and mark the coordinates of each point.
f) Pipeline buried depth measurement accuracy requirements: the measurement error of the direct measurement method is generally not more than ±3cm, the maximum individual point is not more than ±5cm, and the intersection of the pipeline (upper and lower crossing points) should be measured at the same time The buried depth of the two pipelines at the point;
g) the reference of the bolt point: the use of obvious permanent buildings as the reference of the bolt point, when there is no permanent building around and the use of pole bolt point, the number of the pole should be indicated, shall not use non-permanent buildings, trees and water supply pipeline itself facilities as the reference of the bolt point, (except for special circumstances) especially the terrain, name, house number around the gate well, fire well and other facilities must be marked completely;
h) When the pipeline equipment points and feature points are too concentrated, the schematic diagram of the bolt points should be drawn one by one, and the form and number are the same as the node sample diagram. (For the node sample drawing, see the standard content of the node sample drawing)
2. Annotation of incremental distances
a) The starting and ending points of the newly laid pipeline, various equipment points along the line, feature points and the whole 50 meters should be marked with the incremental distance of the pipeline, increasing from the starting point to the end point, marked from left to right on the map, marked above the pipeline at the whole 50 meters, and made a station mark (0.6 mm thick, 1 mm high) on the pipeline, the equipment point and the feature point are marked in the opposite position, and the incremental distance should be marked at the position of the longitudinal upper and lower reverse elbow of the pipeline, and the mark should be made on the as-built plan, as shown in the figure below;
b) The branch of the same project should be added from the branch point to the direction of the branch in another row, and add a capital English letter before the incremental distance (see the diagram above), and the point dense place can be marked with the incremental distance;
c) When laying more than two pipelines on the same road, if drawn on the same map, one of the pipelines should be added to the normal arrangement of the incremental distance, and the other pipelines should also be added with English letters before the incremental distance in the other row.
3. The drawing standard of the node large sample drawing
a) All parts of pipes and fittings above DN75 (except for large body sleeves) should be drawn with independent node drawings, and the plotted orientation is consistent with the plan;
b) The pipeline in the node sample drawing should be pushed to the edge of the circle, indicating the tangent position of the pipeline (see the figure below);
c) The node sample drawing should draw the symbol of the pipe fittings and the form of the installation combination, each pipe fitting should be marked with its specifications, name, material, gate to indicate the style, the cross gate of the gate should also indicate the specification and style, steel parts, cast plastic conversion parts, plastic parts should be specially indicated, cast iron pipe and ductile ink pipe and plastic pipe to be distinguished. When the vertical eye of DN 100 or more is played, the gate is added and the well is not built, the elevation node diagram or the three-dimensional projection node sample drawing should be drawn, and when the gate is marked, indicate "XX gate is directly buried after opening", and mark the relevant dimensions that cannot be reflected by the plane;
d) The short pipe used to connect the pipe fittings in the node sample drawing should indicate its specifications, name and material, especially the length, and the relationship dimension that cannot be reflected in the plan drawing should be marked in the node diagram (see the above figure);
e) Node sample number: the number of the node sample drawing is made by the incremental distance of the pipeline, marked below the circle of the node sample drawing, and a double solid line of 0.3mm is drawn below the number, (see the upper right corner of the figure) When the node diagram reflects a section of pipeline parts, it should be represented by 0+×××~0+×××, and the incremental distance of the starting point is marked in the node.
f) The upper and lower parts of the water supply pipeline intersecting with other pipelines or crossing the underground obstacles, the air holes above DN 75 on the large pipelines, manholes and other special positions, the elevation node should be drawn in a large drawing, and the obstacles crossed and the related positions and relationship dimensions should also be reflected;
g) The circle of the node diagram should be selected according to the difficulty of the node parts, and should be arranged neatly from front to back in the order of increasing distance on the drawing surface, and the layout should be reasonable, and the node diagram should maintain a corresponding relationship with the position reflected by it, and be drawn in the same diagram;
h) Multiple fire hydrants and other facilities with the same node and the same direction on the same pipeline in the same diagram can be replaced by a node, but the first one should be taken as an example in the order of increasing distance, and the latter should be marked with the former xxx station node;
i) In case of double-row pipelines drawn on the same map, the node diagram and bolt point diagram along the line should be arranged separately according to the upper and lower sides;
j) Under special circumstances, when it is necessary to draw a large sample of the node separately, the drawing number of the map sheet should be added before the number of each node to facilitate comparison.
4. Drawing methods and regulations of fire hydrants
a) How to draw ordinary fire hydrants and vertical fire hydrants:
b) The above-ground hydrant drawing method stipulates:
1) The symbols of the as-built floor plan (including sketch drawings and fire hydrant location plans) are adopted
Floor Plan Representation:
2) Node Sample Drawing:
3) Description: The full height of the above-ground fire hydrant is measured from the top of the fire hydrant to the top of the horizontal underground pipe, and the model of the fire hydrant is written in the description. When measuring, only the independent bolt points of the fire hydrant safety gate are marked, and the relevant dimensions of the above-ground fire hydrant and the safety gate can be marked, and the relationship size can be marked on the plan or node diagram. This above-ground fire hydrant symbol is to distinguish it from the old fire hydrant, and is only applicable to the drawing method on the as-built drawing and the location map of the fire hydrant, and the symbol and color of the large picture on the pipe network remain unchanged.
4) In case of obstacles, etc., when special measures are taken (such as up and down, etc.), the unclear node sample on the floor plan can be represented by elevation or stereoscopic projection map.
5) When the old fire hydrant in the original pipeline is changed to a new above-ground fire hydrant, the original data (including: as-built drawing, fire hydrant location map, and pipe network map) should be changed in time according to the new drawing method.
5. Regulations on the drawing of steel pipes, steel parts, plastic pipes and plastic pipe fittings
a) The connections of steel pipes, steel parts, plastic pipes, plastic pipe fittings and other pipe fittings must be clearly distinguished from other pipe fittings on the plan and node diagram, and the length of steel pipes, steel parts, plastic pipes and plastic parts can be directly read out without calculation;
b) The direct hole cutting connection part on the steel pipe should not be marked according to the finished tee, and should be written as "XX caliber steel single flange short pipe (note length) hole welding", and the material and diameter of the dry pipe should also be marked;
c) If the clip is drilled, such as the use of special steel clip tee, only note "caliber x caliber steel clamp tee" as a whole, finished parts;
d) Regarding the marking of steel single flange short pipes, regardless of the length of the short pipes, "steel flange short pipes xx meters" can be directly marked to distinguish it from the marking of iron castings;
e) steel elbow single piece or several elbows combined together on the plan and node diagram parts when the flag is marked, depending on its sparseness, at least the starting point and the end point of the incremental distance should be indicated, on the node diagram to indicate the length of the elbow breakline, and indicate the horizontal distance between the elbows;
f) The elbow of the on-site spelling should be specially marked with the words "on-site spelling" and the approximate degree should be indicated. The part of the connection between the finished steel part and the steel pipe should be marked with the solder joint in the node diagram;
g) The demarcation point of steel pipes, plastic pipes and pipes of other materials should be clearly indicated on the plan (the demarcation point between XX pipe and XX pipe should be marked with the flag), and the incremental distance and bolt point should be marked.
6. Description of the completion of the main pipe:
The as-built description is marked in the last blank space of the whole set of drawings (if there is no blank space, another one can be opened) and includes:
(1) Drawing scale
(2) The unit of size in the figure
(3) The grade, age, point number and starting data of the leveling point used in the as-built survey
(4) Pipe diameter, material and manufacturer
(5) Pipe interface form and filler
(6) Internal and external anti-corrosion of pipelines (indicate the materials used, indicate whether they are made by the manufacturer or made on site)
(7) Pipeline recovering depth: mark the average recovering depth of the pipeline, and the pipeline segments that are too shallow or too deep are marked with incremental distance segments.
(8) Indicate the diameter, material, and length of the abolished pipeline, and the specification, material, style, quantity, and whether it is discharged;
(9) In the statistical chart, the length of the newly paved pipes of various calibers and materials, and the specifications, materials, styles, quantities and manufacturers of the newly paved gates and fire hydrants.
(10) For newly installed water supply projects with multiple registration numbers, the pipe diameter, surface diameter and no meter risk corresponding to each registration number in the drawing should be explained separately.
Drawing standards for as-built drawings of profile sections:
1. Profile view scale: 1:500 transversely, 1:50 longitudinally
Plotted content:
(1) Plan the elevation of the road surface
(2) Existing pavement elevation
(3) The elevation of the outer top of the tube
(4) Pipe diameter pipe (divided into pipe sections of different diameters and materials)
(5) Incremental distance (should correspond to the incremental distance of the floor plan)
(6) Node diagram (represented by pipe fitting symbol)
2. Draw standards
a) The longitudinal section of each drawing should correspond to each point of the plane, and the reflected length should be consistent and the horizontal proportion should be consistent;
b) At the whole 50 meters of the pipeline, the position and elevation of the intersecting pipelines and obstacles should also be reflected, and the elevation data should be accurate to the millimeter;
c) The starting and ending points of the pipeline and the turning points, branch points, reducer points, variable pipe points and various ancillary facilities along the line, as well as the obstacles that cross and cross, should be marked with their specifications, names or practices at the top of the corresponding positions on the longitudinal diagram.
3. Cross-sectional view
1) It is mainly used for the drawing of local as-built drawings of special projects such as pipe jacking or railway crossing, in which the relationship between the pipeline and the casing or culvert, the casing or culvert and the pavement and the roadbed is plotted, and the name and construction method of the filling of the casing are indicated (see the diagram below).
2) The distance from adjacent pipelines, structures and the center line of the road should also be indicated for special projects. (See diagram above)
Drawing standard of as-built drawings of user branches:
It is suitable for new installation, modification, meter transfer, pipe change, pipe replacement and other branch pipe projects.
1) Drawing method: the as-built drawing of the branch pipe is a non-proportional schematic diagram, topography, landform should be similar or similar to the actual situation, there should be enough terrain to explain the location of the new pipeline, intuitively reflect the relative position between the current terrain and the pipeline, around the new building, should be connected with the old building, and mark the size of the relationship between them, otherwise, the construction unit will make up the 1/500 topographic map.
2) The plotting content and requirements of the as-built drawing of the branch pipe: the node diagram number is adopted: nodes 1, 2, 3... In the form, the single-drawn bolt diagram at the dense nodes is adopted: bolt points 1, 2, 3....
3) Pipeline drawing and dimensioning:
a) The pipeline drawing method of the branch as-built drawing is the same as the requirements of the main pipe as-built drawing, except that the pipeline below DN50 does not draw the node diagram, and uses text to explain the key parts, and if necessary, draw the side view or stereoscopic projection diagram of the special part, and mark its relevant dimensions.
b) Dimensioning: The dimensioning of the as-built drawing of the branch pipe is different from the as-built drawing of the main pipe in that the incremental distance is not marked, the actual standard size along the pipeline indicates the length of the pipeline, and the dimensions of other bolt points are the same as the as-built drawing of the main pipe.
4) Marking and description of key parts:
a) The as-built drawing of the branch pipe should be used for each diameter, the material of the pipeline section, the filling diameter, the material, the buried depth, and the position can be parallel to the pipeline or marked with the flag pulling method;
b) On the completion plan of the branch pipe, the registration number of each branch pipe should be marked near the symbol of the water meter, and the non-meter risk prevention, assessment table and other water meters should be distinguished;
c) Shifting the table, modifying, changing the pipe and other projects to change the pipeline, the original pipeline should be moved, changed and recorded (referring to the blockage, closing the door, the abolition of the pipeline, etc.), and do the bolt point, pull the flag to mark its construction practice, the new drawing method according to the drawing method of the branch pipe diagram;
d) Regardless of the nature of the project, the abolition, blockage, closure of the original pipeline, the builder, the date, etc. should be recorded on the form of data retention, and bolting points should be made if necessary. The demolition piece must make a schematic diagram of the closure of the pipeline, plugging, closing the door center, and the bolt point of the meter, and make necessary explanations, and make statistics on the length and quantity of the dismantled pipeline, facilities, and water meters according to the caliber, material, and style.
5) The user record of the as-built drawing of the branch pipe and the color of the pipeline facilities:
a) The content of the user's branch management record should be filled in clearly one by one, and no items should be omitted;
b) The color of the pipeline facilities in the as-built drawings of the branch pipes: the pipeline facilities above DN75 are indicated in blue. Pipeline facilities below DN50 are indicated in red. The water meter well symbols are indicated in red (including no meter insurance).
7) Drawing of the as-built drawing of the residential pipeline
(1) The community map can be drawn with the help of the terrain of the design drawing, and the as-built drawing at 1/500 scale can be drawn, and if it does not reflect the current situation, it should be repaired. The map shows the city coordinates, the square grid and the quadrangular coordinates.
(2) The plotting content of the as-built drawing of the community shall be implemented with the relevant content of the drawing standard, and the icon shall adopt the "branch pipe completion icon".
(3) The dimensions and requirements of the as-built drawings of the community shall be implemented in accordance with the relevant content of the drawing standards of the "as-built drawings of the user branch pipe".
(4) The DN300 or more trunk pipe in the residential pipeline should be drawn separately for more than 100 meters, and the standard is the same as the main pipe completion drawing, and the boundary line between the connection between the residential area and the branch pipeline should be clearly distinguished: the dividing line between the residential area and the peripheral trunk pipe is bounded by the flange A of the main pipe three-way gate, and the flange A is represented by the branch pipeline as the community diagram, and the main pipe diagram is reflected outside the flange A (including the node sample drawing) , the boundary of the two drawings should be indicated separately see xxx diagram, the periphery of the community directly by the trunk pipe into the home branch pipe, the community diagram reflects the branch pipe to be detailed, the trunk pipe from the omission;
(5) The as-built drawings of the community should make the necessary completion instructions, especially the practice of the branch pipe hole part, and whether to add the door heart should be specially indicated.
This article comes from the Internet, compiled and edited by HVAC South Press.