Formwork installation certificate - a document confirming that the form and specifications the structures comply with the requirements of the design documentation. The consequence of insufficient strength, rigidity and tightness of the formwork system is poor-quality concreting and related problems. Therefore, when conducting installation works it is necessary to strictly observe the instructions of the designers and the SNiP III-15-76 standards.
Assembly features
According to SNiP, formwork can be assembled from the following materials:
- wood;
- metal;
- reinforced concrete;
- plastic;
- inflatable rubberized fabric.
The composition of many designs involves the use of several materials. The main elements of formwork systems are shields, with the help of which they set the desired shape of the object to be concreted. Most often, installation is carried out directly at the construction site. It is also common to use solid blocks, which, after pouring concrete, are transferred to another place using lifting equipment.
Regardless of how the SNiP formwork is carried out, the correctness of the assembly is checked at all stages. Deviations from the design values \u200b\u200bare permissible, but they should not exceed the dimensions specified in technical documentation and standards III-15-76. For control are used measuring instruments and geodetic instruments. The reliability of the fasteners, the tightness of the joints, and the general stability of the structure are checked without fail. If at some stage of the SNiP installation of the formwork displacement or deformation is noticed, all work is stopped until the malfunction is completely eliminated. In addition to the main structure, responsible persons must control the installation of auxiliary equipment - scaffolding, scaffolding, etc.
Stripping
After the act of acceptance of the formwork of monolithic structures is signed, the object is concreted. We will talk about how to fill in the mixture correctly next time. Let's go straight to the moment when it is necessary to start dismantling the system (if it is not a disposable equipment remaining in the concrete). First of all, the side elements are removed, which do not carry a serious load. This can be done when the strength is reached, at which deformation of surfaces and corners is excluded.
The main bearing shields are removed later. The concrete mixture must harden at least 70% of the design value. This is sufficient when it comes to slabs, beams and girders with a span of less than 6 m. In the case of larger objects, the formwork SNiP provides for a strength of 80%. In areas of increased seismic activity, the parameters are determined on an individual basis. The timing of stripping is determined by a special laboratory, based on the results of the analysis of concrete samples.
Delivery of the object
The SNiP formwork act will not be of particular importance if the object to be concreted does not pass the control check of the state commission. During this procedure, the surfaces are examined and the main geometric indicators are measured. If the representatives of the commission have doubts, additional laboratory tests are assigned.
During acceptance check:
- the strength of concrete, as well as its water resistance and frost resistance, if required;
- the quality of the materials used according to the certificates, passports and test results attached to them;
- the presence of the required amount of reinforcement and the correctness of its placement (this information may be contained in the act for the formwork);
- compliance with the configuration of the object specified in the project (holes, openings and other elements are recalculated and measured);
- surface quality and correct seams.
A well-assembled formwork that meets all the instructions of the designers is an almost one hundred percent guarantee that there will be no problems with the object. Poor quality of the mixture and ignorance of technology requirements can interfere with high-quality concreting, but that's another story. At least the geometry will be respected. Our company in Moscow offers its services for the rental and installation of formwork systems for various purposes.
Commission consisting of:
Representatives of ______________________
(positions, surnames, initials)
technical supervision representative of the customer __________________________________
___________________________________________________________________________
(position, surname, initials)
made an examination and acceptance of work performed by ____________________
___________________________________________________________________________
(name of the construction company)
Commission charged:
1. Installed formwork _________________________________________________
___________________________________________________________________________
1.1. Working drawings No. ___________________________________________________,
developed by ___________________________________________________________
with the application on them of all deviations from the design, admitted during the construction process and agreed with the design organization ________________________
___________________________________________________________________________
1.2. Work log _________________________________________________________
1.4. Acceptance certificates of previous works No. _________________________________
1.5. Geodetic inspection data of the formwork from "__" ________________ 200_
___________________________________________________________________________
2. Installed fittings _________________________________________________
___________________________________________________________________________
2.1. Working drawings No. ______________________________________ developed by
___________________________________________________________________________
(name of the design organization)
with drawing on them all deviations from the project, admitted during the production of work and agreed with the design organization _____________________________________
___________________________________________________________________________
2.2. Documents specified in the list of annexes to this act. After reviewing the submitted documents and checking the installed formwork and reinforcement, the commission established:
1. As of the formwork __________________________________________________
1.1. Compliance with the project:
1.1.1. Positions of the formwork in the plan relative to the project axes _____________
___________________________________________________________________________
1.1.2. The main dimensions and marks of the formwork _________________________________
___________________________________________________________________________
1.2. Density of formwork panels _____________________________________________
1.3. Density of joints and mates of formwork elements with each other ___________
___________________________________________________________________________
1.4. Density of formwork conjugation with previously laid concrete ________________
___________________________________________________________________________
1.5. The formwork was insulated by means of ____________________________
2. According to the state of the reinforcement:
2.1. The armature is made of steel ______________ grade _______________
in accordance with working drawings No. _________________________ and installed in
___________________________________________________________________________
(design name)
with the following deviations ________________________________________________
caused by ________________________________________________________________
and agreed ___________________________________________________________
"__" ___________________ 200_ No. __________________________________________
2.2 Fastening of reinforcement bars at intersections is performed in accordance with the requirements of the current SNiP.
2.3. Embedded parts are installed in the places provided for by working drawings No. ______________________ and have a steel grade ________________________________
2.4. Welded joints of reinforcement made _____________________________________
___________________________________________________________________________
(joint type and welding method)
and are located in the places provided for by working drawings No. ________________
2.5. Brand of electrodes and their coating ________________________________________
2.6. Welding was carried out at an ambient temperature of _____________ ° С
2.7 Results of external examination of welded joints ________________________
___________________________________________________________________________
(indicate the conformity of the actual dimensions of seams and overlays with the design ones, the presence of visible
___________________________________________________________________________
undercut defects, lack of penetration, slag inclusions, pores, cracks, etc.)
2.8. Results of quality control of welded joints by mechanical method or physical methods (ultrasound, gamma ray transmission) _____________
Based on the above, the Commission decided:
1. Accept work on the installation of formwork, fittings and embedded parts __________
___________________________________________________________________________
(designation of structures)
2. Quality of work performed _____________________________________________
___________________________________________________________________________
3. On the basis of the foregoing, it is permitted to carry out concreting works
___________________________________________________________________________
___________________________________________________________________________
Applications:
1. Executive diagram of the main dimensions of the formwork, its position relative to the project axes and the location of the main elements.
2. Factory certificates No. ___________________ of reinforcing steel and electrodes.
3. Acts No. ___________________________________ of control mechanical tests of reinforcing steel in cases provided for by the current SNiP and GOST.
4. Acts No. _____________________________________________ tests of welded joints of reinforcement, performed during the manufacture of reinforcement.
5. Acts No. ______ of acceptance of fittings manufactured at the plant or in workshops.
6. Acts No. ______ of tests of welded joints of reinforcement, performed at installation.
7. List of welders with the number and date of each diploma.
8. Copies or list of the document on permission of changes made to the working drawings.
_______________________________________
_______________________________________
(Document)
n1.doc
ACT OF INSPECTION AND ACCEPTANCE OF THE ESTABLISHED FORMWORK "___" _____________________ 19 ____
Commission consisting of:
Representatives _________
(positions, surnames, initials)
Customer's technical supervision representative ___________________
_______________
(position, surname, initials)
Conducted survey and acceptance of works performed by ____
_______________________
(name of the construction company)
Commission charged:
1. Installed formwork
_________________________________________________________
1.1. Working drawings Nos.
Developed by __________________________________________
With the application on them of all deviations from the project, admitted during the construction process and agreed with the design organization _____________________________ _________________
_________________________________________________________
1.4. Acceptance certificates of previous works No. _________________
1.5. Geodetic inspection data of the formwork from "__" _____ 19__
_________________________________________________________
2. Installed fittings ________________________________
_________________________________________________________
2.1. Working drawings No. _____ developed by __________________
_________________________________________________________
(name of the design organization)
With drawing on them all deviations from the project, admitted during the production of work and agreed with the design organization _________________________________________________________
_________________________________________________________
2.2. Documents specified in the list of annexes to this act.
After reviewing the submitted documents and checking the installed formwork and reinforcement, the commission established:
1. As of the formwork _________________________________
1.1. Compliance with the project:
1.1.1. Positions of the formwork in the plan relative to the design axes _________________________________________________________
_________________________________________________________
1.1.2. The main dimensions and marks of the formwork _________________
_________________________________________________________
1.2. Density of formwork panels _____________________________
1.3. Density of joints and mates between formwork elements ____________________________________________________
1.4. Density of conjugation of formwork with previously laid concrete __________________________________________________
_________________________________________________________
1.5. The formwork was insulated by means of ____________
2. According to the state of the reinforcement:
2.1. The armature is made of steel ________, grade ______
In accordance with working drawings No. ____ and installed in ______
_________________________________________________________
(design name)
With the following deviations _______________________________
Called by _______________________________________________
And agreed __________________________________________
"____" __________________________ 19 ___ No. _________________________________
2.2. Fastening of reinforcement rods at intersections is performed in accordance with the requirements of the current SNiP.
2.3. Embedded parts are installed in the places provided for by working drawings No. _____ and have a steel grade ________________
2.4. Welded joints of reinforcement made _____________________
_________________________________________________________
(joint type and welding method)
And located in the places provided by the working drawings No. __
2.5. Brand of electrodes and their coating _________________________
2.6. Welding was carried out at an ambient temperature of _______ ° С
2.7. Results of external examination of welded joints ________
_________________________________________________________
(indicate the compliance of the actual dimensions of the seams and overlays with the design ones, the presence of visible defects, undercuts, lack of penetration, slag inclusions, pores, cracks, etc.)
2.8. Quality control results welds by mechanical means or by physical methods (ultrasound, gamma ray transmission) _____________________________________________
Based on the above, the Commission decided:
1. Accept the work on the installation of formwork, fittings and embedded parts ____________________________________________________
(design name)
2. Quality of work performed _____________________________
_________________________________________________________
3. On the basis of the above, it is allowed to carry out concreting work ____________________________________________
_________________________________________________________
Applications:
1. Executive estimate of the main dimensions of the formwork, its position relative to the project axes and the location of the main elements.
2. Factory certificates No. _______ of reinforcing steel and electrodes.
3. Acts No. ___ of control mechanical tests of reinforcing steel in the cases provided for by the current SNiP and GOST.
4. Acts No. ________ tests of welded joints of reinforcement, performed during the manufacture of reinforcement.
5. Acts No. _______ of acceptance of fittings manufactured at the plant or in workshops.
6. Acts No. ______ tests of welded joints of reinforcement, performed at installation.
7. List of welders with the number and date of each diploma.
8. Copies or list of the document on permission of changes made to the working drawings.
________________________________
________________________________
(signatures)
Appendix 33
JOURNAL No. ____ OF REGISTRATION OF THE DELIVERY OF REINFORCED STEEL
Started "____" _________ 19___
Completed "____" ________
19 ___
Responsible
For keeping a log
Laboratory boss________________________
(surname, initials, signature)
Head of production
(surname, initials, signature)
Place of printing
Construction organization
Appendix 34
JOURNAL No. ___ REGISTRATION OF TEST RESULTS OF REINFORCED STEEL
Responsible for logging
Laboratory boss ____________________________________
(surname, initials, signature)
Started "____" _______________ 19___
Completed "____" ___________ 19___
Input | Batch number | Number, | Test date | Type and brand | GOST | Arma class | Diameter, | Cross area | Yield point MPa (kgf / mm 2) |
||
laboratory number | t | tany | become | turn steel | mm | section, mm 2 | standardized | load (kgf) | in sample |
||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
Temporary | Relative extension, % | Test for | Other | Zak- | Under- |
||||||
tensile strength MPa (kgf / mm 2) | standardized | initial length | length after time | in the sample | cold bend or bend | other types of test | release | laboratory assistant letter |
|||
standardized | load (kgf) | in the sample | snatch, mm | standardized degrees, s - mandrel thickness, D - diameter of a rod, bends (bends) | actually kinks or kinks | tany | |||||
13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
This magazine laced
And numbered _______________________ pages
Head of production
Technical department ____________________________
(surname, initials, signature)
Place of printing
Construction organization
"____" _______________________ 19___
Appendix 35
Building company
__________________________________
Construction _____________________
__________________________________
(name and
__________________________________
Location, km, PC)
ACT OF INSPECTION OF REINFORCED BEAMS
"____" _________________ 19 ___
Commission consisting of: ______________________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________
(positions, surnames, names, patronymics)
Drew up this act in that a set of reinforcing beams in the amount of ________ pcs. for block No. ______________ of superstructure No. ________________ ______ ______________________ under load __________________________________________________
Most (overpass) ________________________________________
_________________________________________________________
Made of wire (twisted strands) GOST ___________________
And equipped with anchors in accordance with the working drawings No. ____
Developed by ____________________________________________
(name of the design organization)
_________________________________________________________
_________________________________________________________
And current regulations with the following basic data:
According to the project | In reality |
|
Wire diameter (twisted strands), mm | ||
Tensile strength (according to certificate No.), kg / cm 2 | ||
The number of wires (strands) in a bundle | ||
Bundle design (double-loop, single-loop, etc.) | ||
Anchor design (anchor blocks, frame or frame-rod) | ||
Total number of anchors | ||
Anchor sprocket diameter, mm | ||
Anchor spiral diameter (internal), mm | ||
Spiral wire diameter, mm | ||
Number of turns in a spiral | ||
Coil winding step, mm | ||
Concrete composition for anchors | ||
Strength at the time of installation in the formwork, kg / cm 2 | ||
Availability shrinkage cracks in anchors |
Replacement of __________ with _____________________________ agreed
FROM_________________________ _______________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________
(cm. ___________ __________________________________________ )
Isolation of the non-working parts of the beams (behind the anchors) from adhesion to concrete made ________________________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________
Deviation from the project does not exceed the permissible
Signatures __________________________________
__________________________________________
__________________________________________
__________________________________________
__________________________________________
__________________________________________
Note. The act is signed by: the contractor (head of the shop), shift foreman, persons who control the quality of work (factory inspector, head of the laboratory, head of the VET).
Appendix 36
___________________________________
___________________________________
___________________________________
MAGAZINE No. ____ TENSION OF REINFORCEMENT BEAMS
Started "____" ____________ 19 ____
Completed "____" _________ 19 ____
Work manager,
in charge of tension
reinforcement beams and
logging ___________________________________
(surname, initials, signature)
Name and number of drawings
designs _________________________
Beam characteristic ________________
Design Efforts: Beam Tensions
N nk _______________________________ ts
N lane _______________________________ ts
N request ________ tf N p _________________ tf
date | №№ | Strength | Controlling the tension and condition of the beams | Qty |
|||||||
(change) | bundles (cana- | concrete in kgf / cm 2 | Actual effort under tension to | Beam lengthening in mm from effort | wire (strands) |
||||||
date | tov) | Mini- | Fact- | 0.2 N nk | N p | 0.2 N nk to N nk | torn off- |
||||
minor | cheskaya | atn | mf | atn | mf | under tension | by | them, |
|||
by act | date of testing of control samples | one side | on both sides | project | with pro-cliff |
||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
Type and numbers of jacks _______________
Where and when was taring done
Manometers __________________________
Number, date of compilation
Executive voltage circuit ______
Increased beam tension | Actual tension of the bundles (ropes) | Artist: surname, and., About. | Survey and control | Notes |
|||||
actual effort | duration, min | when pressing the anchor cone N f zapr | when installing support washers or nuts | foreman; shift master - surname, and., about., signature | tension. Control results: date, surname, etc., about. and signature | ||||
atn | mf | atn | mf | atn | mf | reviewer | |||
13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
Logging Guidelines
1. In the table of the journal, the designation of efforts is adopted:
N nk - controlled tension in the beam
N lane - the greatest (increased) tension force
N zapr - force in the bundle at which the anchor body is pressed
N p - design tensile force in the beam
The "F" index indicates the actual tension in the bundle
2. With the same values \u200b\u200bfor the value of N nk and N p in the table, efforts are put down with their indices.
3. In the table, each bundle is marked with an individual number; the position of the beam should be reflected on the executive diagram attached to the magazine.
4. Entries in the journal are made in the sequence corresponding to the order of the work on tension and installation of beams.
5. Records of the tension of the rejected beams are saved with the mark "rejected", the recording of the tension of the beams installed instead of the rejected ones is made on a free row of the table in the sequence of work with the addition of the sign "instead".
6. The number of broken wires is put down with the index "about", for example, 2 about; the number of wires with slippage is entered without an index.
This magazine laced
And numbered _____________________ pages
Site manager
(surname, initials, signature)
Head of production
Technical department ____________________________
(surname, initials, signature)
Place of printing
Construction organization
Appendix 37
Building company ___________
___________________________________
Construction ______________________
___________________________________
(name and location,
___________________________________
MAGAZINE No. ____ MANUFACTURING AND INSPECTION OF REINFORCED FRAMES FOR CONCRETING MONOLITHIC AND PRE-CONCRETE CONCRETE STRUCTURES IN CONSTRUCTION
Responsible for manufacturing
Reinforcement cages and maintenance
Journal ________________________________________
(surname, initials, signature)
Date, | Order- | Name | Brand | № | Reinforcing steel |
||||
change | frame number | product innovation | products | working drawings project | Receipt batch number | Certificate No. | Arma tours class | Type and grade of steel GOST | Date and No. of test |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
Diameter of rods, | Rebar sampling | Frame weight, | Gaba-rite | Surname, initials | The control and acceptance | Note |
||
mm | total length, r.m. | weight, kg | kg | frame dimensions a x in mm | foreman's signature | inspection results, detected defects and instructions for their elimination | acceptance mark, date and signature of the supervisor (shift master) | |
11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
Note. This journal is kept in the manufacture of all types of reinforcing cages for monolithic and prefabricated reinforced concrete at construction sites. structures, except for prefabricated reinforced concrete frames. span structures.
This magazine laced
And numbered ______________________ pages
Site manager
(senior foreman) ____________________________________
(surname, initials, signature)
Head of production
Technical department ____________________________
(surname, initials, signature)
Place of printing
Construction organization
"___" ____________________ 19___
Appendix 38
Building company ___________
___________________________________
Construction ______________________
___________________________________
(name and location,
___________________________________