The act of inspection of open ditches and foundation pits sample. Geological surveys: examination of the pit
EXAMPLE OF REGISTRATION OF THE ACT OF INSPECTION OF OPEN DITCHES AND PITTS
Inspection act open ditches and foundation pits
We, the undersigned,project author (or his authorized architect) | Novikov S. G. |
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constructor | Veshtort M. E. |
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customer representative | Mikhailov S.V. |
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chief construction engineer | Novikov S. G. |
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work foreman | Xiamin N.V. |
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inspected ditches and pits for the foundation of the building | quarter 25, lake Dolgoe |
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on the land plot | building 44, 44L |
and it turned out:
1. Soil at the bottom of the ditches corresponds(does not correspond) to the data of preliminary surveys, namely: rock, structure, impurities, density, humidity, chemical composition, bottom draft from five strong blows.
2. Groundwater level 0.8-1 m .
3. Planning mark for the project with filling or cutting against the existing surface of the earth on the site ±0.2 m .
4. Depth (from the planning mark, the width of ditches and pits) .
5. Accepted base for foundations sandy loam, sand cf. fineness R about =0.8 kgf/cm 2 .
6. Thickness of the base (according to preliminary surveys) 2-2,8 m .
7. Initially, the allowable pressure on the ground was accepted kg / cm 2 according to the approved project .
8. In fact, upon inspection of ditches and pits, the allowable pressure is established 90 m per pile .
9. Type of foundations adopted by the project pile foundations .
10. In the production of excavation met (not met) obstacles (old wells, piles, foundations of former buildings, cesspools, etc.).
11. The need for an artificial foundation or a special type of foundation not provided for by the project is caused (not called).
12. Additional excavation required (not required) in quantity cubic meters.
The Commission recognizes that the excavation work performed and the accepted pressure on the ground in 90 m per pile does not cause fear of deformation of the building upon its erection.
The author of the project or his authorized architect | Novikov FROM. G. |
(signature) |
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Customer representative, engineer | Veshtort M. E. |
(signature) |
|
Representative of the design organization | Mikhailov S.V. |
(signature) |
|
Work Producer | Xiamin N.V. |
(signature) |
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(Document)
n1.doc
EXAMPLE OF REGISTRATION OF THE ACT OF INSPECTION OF OPEN DITCHES AND PITTS
The act of inspection of open ditches and foundation pitsWe, the undersigned,
project author (or his authorized architect) | Novikov S. G. |
|||||||
constructor | Veshtort M. E. |
|||||||
customer representative | Mikhailov S.V. |
|||||||
chief construction engineer | Novikov S. G. |
|||||||
work foreman | Xiamin N.V. |
|||||||
inspected ditches and pits for the foundation of the building | quarter 25, lake Dolgoe |
|||||||
on the land | building 44, 44L | on st. |
and it turned out:
1. Soil at the bottom of the ditches corresponds(does not correspond) to the preliminary survey data, namely: rock, structure, impurities, density, humidity, chemical composition, bottom sediment from five strong impacts.
2. Groundwater level 0.8-1 m .
3. Planning mark for the project with filling or cutting against the existing surface of the earth on the site ±0.2 m .
4. Depth (from the planning mark, the width of ditches and pits) .
5. Accepted base for foundations sandy loam, sand cf. fineness R about =0.8 kgf/cm 2 .
6. Thickness of the base (according to preliminary surveys) 2-2,8 m .
7. Initially, the allowable pressure on the ground was accepted kg / cm 2 according to the approved project .
8. In fact, upon inspection of ditches and pits, the allowable pressure is established 90 m per pile .
9. Type of foundations adopted by the project pile foundations .
10. In the production of excavation met (not met) obstacles (old wells, piles, foundations of former buildings, cesspools, etc.).
11. The need for an artificial foundation or a special type of foundation not provided for by the project is caused (not called).
12. Additional excavation required (not required) in quantity cubic meters.
The Commission recognizes that the excavation work performed and the accepted pressure on the ground in
90 m per pile
does not cause fear of deformation of the building upon its erection.
Annex 41
EXAMPLE OF REGISTRATION OF THE CERTIFICATE CERTIFICATE OF HIDDEN WORKS
Certificate of inspection of hidden works« 21 » April 199 8 G.
Commission consisting of:
representative of the design organization (in cases of implementation of designer supervision of the design organization in accordance with the requirements SP 11-110-99)
and drew up this act as follows:
1. The following works have been submitted for certification | ||
The device of sand bedding under the foundations in the axes 12-23, A-F |
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(name of hidden works) |
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2. The work was carried out according to the design and estimate documentation | JSC "LENNIIPROEKT", |
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workshop No. 1, 13017 - KZh, sheet 12, 12.96 |
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(name of the opening organization, number of drawings, date of their compilation) |
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3. When performing work, applied | coarse sand h = 70 mm |
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(name of materials, products with reference to certificates or other documents confirming the quality) |
4. When performing work, there are no (or allowed) deviations from the design and estimate documentation
Commission decision:
The works were performed in accordance with the design estimates, standards, building codes and regulations and meet the requirements for their acceptance.
Based on the foregoing, it is allowed to carry out subsequent work on the device (installation)
Before proceeding with the construction of a house, the developer must assess whether the soil will withstand the additional load. Practice shows that one should not rely entirely on the result of engineering and geological surveys carried out the day before. It is necessary to personally verify the impeccability of the calculations. If you do not pay due attention to the procedure for examining the bottom of the pit, you may face irreversible consequences in the future, up to the collapse of the building. Objects located in areas with significant traffic, for example, close to the subway, are at the greatest risk. In such conditions, even a slight flooding of the building promises to turn into a disaster.
Examination of the foundation pit of a built house
It is possible to make a decision to inspect the bottom of the pit and draw up an act based on its results, even if the house has been commissioned for a long time. This need arises:
- due to changes in the design of the new building or its foundation in the period after the completion of construction;
- with a sharp change in the hydrometeorological factors of the territory (for example, an increase in the level of groundwater or the formation of landslides).
Often, a survey of the pit is carried out several years after the delivery of the house. And if the situation is not in the best way, urgent measures are taken to strengthen the foundation or divert water.
Secure Foundation
Examination of the soils of the base of the excavation ensures the accuracy of calculations in the design, and as a result - the safety of the building. The survey will help determine:
- whether the breeds indicated in the technical report are identical and the actual layers of the cut;
- where is zero level excavation, and whether this point corresponds to the parameters of the prepared project;
- whether the levels match the control marks.
Excavation survey procedure
Examination of the pit is carried out with the help of a geologist, and the result of the work is accepted by a special commission consisting of a representative of the customer, contractor and government agencies engaged in control and supervision in the field of construction.
Examination of the pit by a geologist is carried out in several stages:
- introductory examination;
- assessment of spatial characteristics and their possible dynamics;
- study of the physical parameters of soil samples (a specialist takes samples from the walls of the excavation being examined);
- comparison of the results obtained with the indicators recorded in the technical report;
- preparation of an act of examination of the pit, which contains data on the characteristics of the soil, occurrence groundwater, correspondence of foundation laying points and so on.
The result of the survey becomes the basis for the decision of the commission: to start construction at the design levels or an offset is required.
Complications and risks for builders
Examination of the pit can bring very unpleasant surprises. Often the procedure is complicated by a number of circumstances:
- The area is regularly flooded and there is a need to pre-drain it.
- The site is experiencing an increased load in the form of old engineering networks or foundations. In this case, when surveying the bottom of the pit, additional soil samples will have to be taken.
- There are significant inconsistencies between the results of the survey of the pit by a geologist and the design data. This situation requires new engineering and geological surveys, the composition and scope of which will be determined by the commission. Based on the results of additional studies, the construction project is adjusted.
Pit inspection certificate
The final document of the survey is the certificate of examination of the pit, provided for by SNiP. It contains comprehensive information about the studied soils and the features of the pit itself. The act is executed in several copies: for the customer, contractor, geological company that conducted the survey, as well as state supervisory authorities.
Order of work Library Prices Contacts
Home / Geology /
Examination of the pit
Each developed the pit is being examined by geologists, after which it is accepted by a commission with the participation of a representative from the customer. Examination of the excavation is carried out in order to establish the conformity of indicators between the already opened soils, as well as those adopted in the project according to the results of engineering and geological surveys. A positive result of the acceptance of the excavation is the Examination Certificate of the excavation. Which is made in 4 copies. Architectural and geotechnical supervision, contractor and geological organization that directly performed the quality assessment soil in the pit, receive one separate copy.
Features of the excavation survey procedure
Examination of the excavation begins with a geologist visiting the site for a preliminary acquaintance with the excavated excavation, as well as a description of the soils that were uncovered in its walls. Previously conducted engineering and geological surveys with the developed Technical Report on the study of the territory are the basis for clarifying and detailing new indicators for the pit. The dimensions and elevations of the pit, its actual bedding, as well as the quality of the soils must match the geological section given in the project. The commission, also relying on the data on the project, establishes the possibility of laying the foundation slab at the design level or changed for any reason.
Visual inspection of the fully open excavation is carried out by a geologist. He is also engaged in the description of the soils exposed in the walls, and on the basis of this description he will testify the quality of the soil on the walls of the pit. The geotechnical engineer compares the information received with the data that are available in the technical report on engineering and geological surveys. After completing the entire list of necessary work, the engineer draws up a certificate of examination of the pit. In it, he describes the exposed soils, indicates the fact of the presence or absence of exposed ground water , analyzes the compliance of the actual marks of the pit with those that appear in the project, and also indicates other additional information.
It is important to examination procedure was carried out with a dry surface of the base. Often enough engineering survey for this work are subject to some complications. So, for example, in urban conditions (with an increased building density) complications of a man-made nature arise: when digging a new foundation pit, fragments of old foundations and communications, as well as areas of man-made soils, are encountered. In this case, additional soil sampling and its study are carried out for a more accurate study of the building site.
In case of significant discrepancies in the results of the control soil sample with the accepted final engineering and geological results in the project, then they are assigned to this site additional engineering and geological surveys. The volume of these studies should be sufficient to make the necessary changes to the project. If this recommendation is not adhered to, then the existing differences may lead to a change in the decisions made in the project or the opening of soils for which there are no data in the engineering-geological report.
Examination of the excavation is completed upon receipt of the Act on the performance of work, which describes in detail the excavated soils in the area under study, groundwater if they are present (absent), the correspondence of the actual elevations of the excavation to the design elevations and other information.
Components of the documentation for the survey of the excavation
The final documentation must contain the following components:
working drawing of the foundation, foundation pit and fixtures (if any were changed during the construction process);
acts of geodetic breakdown of the pit;
list of permanent benchmarks;
individual acts of performing hidden works (bearing capacity of soils, backfilling, properties of foundation soils);
act of examination of the pit (which is drawn up by a geologist on site).
This documentation is accompanied by design plans and executive plans, as well as sections of the pit with reference to the axes of the foundation; control drilling indicators indicating both design and actual characteristics in terms of soil conditions; test report bearing capacity soils (during their implementation). In some cases, additional drawings of the pit fencing, if any, are attached.
In fact, the survey of the boiler room is an assessment of the work performed for their safety during operation. This assessment is carried out at the initial stages, since after the start of the subsequent work, the elimination of various defects that are identified during the survey will be impossible.
Examination of the pit - this is a control procedure, participation, in some cases, can be taken by representatives of the relevant state bodies that supervise the construction industry, as well as independent experts, if necessary. All participants in such work are notified by their performer in advance. If, as a result of acceptance of work, any defects are found, the developer or customer has the right to demand their elimination at a certain time.
Today, in order to maintain financial statements, it is mandatory to draw up certain documents accordingly. Such papers are called "documents strict accountability».
These include various kinds of acts, including hidden works. This kind of work must be carried out with the fulfillment of certain requirements.
The very act of this type allows you to simultaneously decide enough a large number of tasks. Therefore, you should carefully read the rules for its preparation.
This will avoid a large number of various troubles. Since such documents are necessarily checked by the tax authorities. They may also be required to protect their own interests in court, other bodies.
Basic information
Today there is an extensive list of strict reporting documents, links to which must be present in the accounting report. It is important to remember that they are correct.
Since such acts are often used to implement all kinds of corruption schemes. This is the reason for close attention to them from all kinds of tax authorities.
Therefore, it is worth avoiding making mistakes during registration. Since this can lead to quite serious difficulties. In particular, the imposition of a fine.
How on entity, and on . In the legislation, the issue of strict accountability is indicated in sufficient detail.
Acts of this type in some cases must be drawn up in accordance with pre-established forms. At the same time, certain situations allow organizations to develop their own formats.
To avoid various kinds of errors, misunderstandings, you need to work out several questions in advance. These today include the following:
- what it is?
- the purpose of the document;
- legal base.
What it is
Today, the very term "hidden works" refers to a list of works that are invisible to the naked eye in the finished state. Typically, hidden works are "overlapped" by subsequent stages of construction.
These currently include the following:
- waterproofing;
- laying thermal insulation;
- filling the foundation with a layer of sand;
- plastering with subsequent painting and other similar works.
As in other areas of construction, all the works indicated above and similar in features must be documented. It is for this purpose that it is compiled.
Its importance is obvious. After completion or other actions, the result of such work will simply not be visible.
Therefore, the inspection by a special commission, the preparation of the act must be taken as responsibly as possible.
For poor-quality performance of certain types of construction work, not only a fine, administrative liability, but also criminal liability is due.
For example, if as a result of non-compliance with building codes, GOSTs, serious financial damage, harm to life and health was caused. It is worth trying to avoid making various kinds of mistakes.
Purpose of the document
The act of hidden work allows you to solve a fairly large number of various tasks.
First of all, these include the following:
Reflection of relevant information in financial statements | When carrying out various business transactions, the postings indicate exactly the link to the document, its serial number |
Verification that all requirements are met | Works of this type presented for carrying out - in order to draw up an act of the type in question, a commission is required to indicate the existing shortcomings (if any) |
Protection of own interests in court | In the event of any disputes / conflicts that cannot be resolved peacefully, it will be necessary to provide an act of hidden work to the supervisory authority, to the court to confirm your innocence |
Other | — |
Also, this document can be used to solve other equally important, essential tasks. Subject to all the rules of compilation, it has significant legal force.
That is why before compiling it is worth familiarizing yourself with all the nuances of compiling such documentation. Otherwise, it will be quite difficult to use this act for its intended purpose.
The document can be used to present claims for the payment of a penalty or to perform additional work. For example, if any flaws or defects were found during the construction process.
Based on this document, it will be possible to force the elimination of various defects, defects. The basis for this is the corresponding article in the Civil Code of the Russian Federation.
Legal framework
Before proceeding with the preparation of the corresponding type of document, it is necessary to carefully study the legislation in force in this regard.
This NAP includes the following main sections:
Basic provisions | — |
Order of conduct | All executive documentation |
It is a sample documentation for capital construction | |
Requirements for maintaining as-built documentation during reconstruction at facilities various types, overhaul(sample documentation) | |
Requirements for executive-type documentation in case of performing various types of work in the areas of engineering communications, engineering support (documentation sample) | |
Basic samples, requirements for the preparation of executive documentation, samples of special acts drawn up in this case | |
Various requirements for the maintenance of as-built documentation related to work in the nuclear power industry, affecting environmental safety issues |
It is mandatory to comply with all requirements of this order. Since otherwise, when checking the documentation, even if all the work is performed in accordance with certain regulations, the construction object will not be accepted.
If possible, it is worth considering this issue in advance, working out in all directions. This will make it possible to significantly save time, since otherwise you will need to spend it on reworking documents and acts.
Considerations when going to court
In case of going to court when considering various disputable situations, this act must be drawn up in accordance with legislative requirements.
Otherwise, it will simply be recognized as insignificant, it cannot be used as evidence. You will also need to provide links to legislative acts on the basis of which the document is being drawn up.
The algorithm for drawing up an act of hidden works is quite simple. It is only important not to forget about the need to draw it up in accordance with some important legislative documents.
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