Statement of the need for building materials. Working hours of the enterprise

1. Sample. Vedomosti needs for materials and cost calculation materials by object and sections of the estimate (form No. 4-mat)

   Financial statements, Accounting→ Sample. Bill of material requirements and calculation of the cost of materials for the object and sections of the estimate (form No. 4-mat)

   Appendix 5 to the letter of the State Construction Committee of the Russian Federation dated 04.06.93 no. 12-146 form no. 4-mat bill needs for materials and cost calculation materials by object and sections of the estimate + - + no.codes material-name of material ...

2. Sample. Vedomosti accounting for balances materials in a warehouse. Form No. m-14

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   2.89 no. 241 sample 1st page of the form + - + (company, organization) code for okud warehouse (storeroom) + - + bill accounting for balances materials in stock for 20 g. materially person in charge (position, etc., about., surname) ...

3. Sample. Vedomosti № 11

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4. Sample. Vedomosti № 5

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5. Sample... Payment bill... Form No. 253

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   model form no. 253 organization building shop - to calc. statements no. billing department bill no. for issuance for 20 years - last name, first name, patronymic name, receipt amount ...

6. Sample. Vedomosti № 1

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   bill no. 1 for the debit of account no. 50 "cash" from the credit of accounts + - + balance at the beginning of the month rub. + - cash register date line 46 ...

7. Sample. Vedomosti № 2

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8. Sample. Vedomosti № 2.1

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9. Sample. Vedomosti № 13

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10. Sample. Vedomosti № 10

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11. Sample. Vedomosti № 15

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Ministry of Education Russian Federation

"Perm State Technical University"

Faculty of Civil Engineering

Department of Building Materials and Special Technologies

COURSE PROJECT

in the discipline "Technology of reinforced concrete products"

“Designing a workshop for the production

free-flow pipes "

Completed by: Fedoseeva O.A.

Group PSK 05z

Checked by: Shamanov V.A.

Perm 2010

Introduction. ………………………………………………………………… .... 3

Main characteristics of the product ……………………………………… ... 5

Requirements for materials …………………………… ..... 8

Calculation of the composition of concrete ... ... ... ………………………………………………… ..9

Enterprise mode ………………………………………………………… 9

Bill of material requirements ………………………………………………………………………………………… 11

Selection and justification of technology ……………………………………… ... 11

Short description technological process…………………………..14

Technological calculation …………………………………………………… .16

Operational control ……………………………………………… ..

Bibliography………………………………………………………...

INTRODUCTION

The course project is the final part of the study of the subject, it is independent work student, in which he systematizes, deepens and consolidates his knowledge. During the writing of the course project, the student acquires the skills of using educational, reference and normative literature, performing calculations and graphic works. Course design must meet a single goal - the training of a technician-technologist who is able to independently solve specific technological problems of the factory production of reinforced concrete products and structures.

The purpose of this term paper is the project of a workshop for the production of non-pressure pipes and selection technological equipment for the manufacture of non-pressure reinforced concrete pipes with a capacity of 1754.0 m 3 per year.

Tasks include:

study of the requirements for this product in accordance with regulatory documents,

selection and justification of the technological process for the production of non-pressure pipes,

justification and calculation of the operating mode of the pipe production workshop, as well as determination of the dimensions of the workshop,

calculation, selection and layout of technological equipment for the manufacture of reinforced concrete products.

Tubular reinforced concrete products used for engineering networks (pipes, supports, well rings, etc.) are manufactured on specialized installations using different ways compaction of concrete mix.

According to the calculated internal pressure of the liquid in the pipeline, reinforced concrete pipes are divided into pressure and non-pressure.

The course project considers non-pressure reinforced concrete pipes in accordance with the requirements of GOST 6482-88. They are designed for laying underground pipelines transporting household liquids and atmospheric wastewater, as well as groundwater and production fluids that are not aggressive to reinforced concrete and rubber sealing rings.

PRODUCT CHARACTERISTICS

Pipes should be manufactured in accordance with the requirements of GOST 6482-88 "Non-pressure reinforced concrete pipes".

Pipes are designated with grades in accordance with the requirements of GOST 23009. The grade of pipes consists of alphanumeric groups separated by a hyphen.

The first group contains the designation of the type of pipe, its nominal diameter in centimeters and the effective length in decimeters. In the second group, the bearing capacity is indicated, denoted by an Arabic numeral.

Main dimensions - table 1 and sketch - figure 1.

Picture 1

Pipe type TB

TB - cylindrical socket-type with a thrust collar on the butt surface of the sleeve end of the pipe and butt joints sealed with rubber rings.

Table 1

Pipes type TB

D y, mm	Pipe size	Pipe dimensions, mm															Reference pipe weight, t
		d i	d e	d 1	d 2	t	t 1	but	l	l 1	l 2	l 3	l 4	h	h 1	h 2
400	TB40.50	400	500	531	684	50	76,5	44		5145	145	365	102	92			0,95
500	TB50.50	500	620	651	834												1,5
600	TB60.50	600	720	751	934												1,7
800	TB80.50	800	960	991	1210	80	109,5					482		125			3,0
1000	TB100.50	1000	1200	1231	1498	100	133,5					590		149			4,8
1200	TB120.50	1200	1420	1451	1740		144,5	69		5170	170			160			6,3
1400	TB140.50	1400	1620	1651	1946		147,5	74		5175	175			163			7,3
1600	TB160.50	1600	1840	1871	2196	120	159	84		5185	185	654	125	178			9,0

Non-pressure pipes are made of heavy concrete that meets the requirements of GOST 26633-91, compressive strength class: for collectors - B-25; for road crossings - B-30. In addition to increased strength indicators, reinforced concrete pipes for road crossings are made of concrete with frost resistance Mrz300 and water resistance grade W6 (the concrete grade for frost resistance is standardized depending on the operating conditions in accordance with the requirements of SNiP 2.03.01-84 and SNiP 2.03.11-85 chapters). The pipes themselves are watertight and withstand an internal test hydrostatic pressure of 0.05 MPa. The pipes must be strong and crack-resistant. Cracks on the pipe surfaces are not allowed.

For pipe reinforcement, use: bar hot-rolled reinforcing steel classes A-I and A-III in accordance with GOST 5781; wire of class Вр-I according to GOST 6727.

Embedded products designed to protect pipelines from electrocorrosion are installed at the request of the consumer. In the manufacture of pipes with embedded products, the total steel consumption per pipe should be increased by 0.3 kg.

Shape and dimensions of reinforcement products Figure 2.

Picture 2

Reinforcement of pipe type TB

Frame KP63 - 1pc, table 2.

table 2

Material consumption for one pipe of TB 50.50-2 grade table 3.

Table 3

REQUIREMENTS FOR MATERIALS

List of materials	Name and number regulatory document	Technical requirements	Storage method
Portland cement	GOST 10178-85	NG 22-27	Silo warehouse or other closed containers
		N. skv. not earlier than 45 minutes
		K. skhv. no later than 10h After mixing with water
		R compressed 29.4MPa (300 kgf / cm²)
		Fineness of grinding - sieve residue 15%
Quartz sand	GOST 22551-77	MK 1.9	Specialized warehouse
		Total sieve residue 10-30%
		R compressed not less than 60MPa
Granite crushed stone	GOST 8267-93	Fraction size 10-20mm	Specialized warehouse
		Total sieve residue up to 15%
		Clay content in lumps is not more than 0.25%
		Content of dust and clay particles 1%
	GOST 23732-79	Content of surface-active things. no more than 10mg / l
		Oxidizability of water no more than 15 mg / l
		pH not less than 4 and more than 12.5
		The maximum allowable content of soluble salts is 2000 mg / l; Ions SO -2 4 600 mg / l Ions Cl -1 350 mg / l Suspended particles 200 mg / l
Armature: A240 (AI)	GOST 5781	Profile diameter 6mm Steel grade St3ps Yield strength 24kgf / mm² Elongation 25%	Covered warehouse equipped with crane racks. Bays
B500 (BpI)	GOST 6727	Wire diameter 5mm Breaking strength 1085kgs Elongation 3% Number of bends 4 Linear density no more than 0.144kg
Additive С-3	GOST 24211-91 TU 5745-004-43184789-05	Dark brown aqueous solution, concentration not less than 32%	Metal or plastic barrels, cans. Additives warehouse

CALCULATION OF CONCRETE COMPOSITION

Consumption of materials for 1m 3 of concrete mix, table 4.

Table 4

OPERATING MODE OF THE ENTERPRISE

The mode of operation is determined by the number of working days per year, the number of work shifts per day and the number of hours per shift. By the product of these three indicators, the nominal annual fund of the enterprise's work time is determined. The degree of use of its fixed assets depends on the mode of operation of the enterprise. When assigning the number of shifts, it is necessary to take into account the need for a reserve of time during the day for the current inspection and repair of equipment, the nature of the work of the main units of the shop, in addition, when assigning the number of shifts, it is also necessary to take into account the possibility of providing all shifts with the required number of workers. Table 5.6.

We accept the mode of operation of the enterprise: 3-shift work (TVO) with 260 working days a year.

The duration of the shift is 8 hours.

The annual fund of working time (GFRV) - 6072 hours.

Table 5

Working hours of the enterprise *

* Note: Except for the molding department.

The operating mode of the molding department is 1 shift, the duration of the shift is 8 hours (without lunch), the annual fund of working time is 2024 hours.

Table 6

Production program of the enterprise

STATEMENT OF MATERIALS NEEDS

Name	Unit rev	In year	Per month	Per day	Per shift	At one o'clock
	Kg	339293	28274,4	1346,4	448,8	56,10
	m 3	139,10	11,59	0,552	0,184	0,023
	Kg	435456	36288	1728,0	576,0	72,0
	m 3	278,89	23,24	1,106	0,368	0,046
	Kg	827730	68977,44	3284,64	1094,88	136,86
	m 3	586,65	48,888	2,328	0,776	0,097
Additive	Kg	2419,20	201,60	9,60	3,20	0,40
Water	Kg	77172,48	6431,04	306,24	102,08	12,76
Armature	Kg	81345,6	6778,8	322,8	107,6	13,99

Materials are accounted for with losses: cement - 2%, aggregates - 3%, reinforcement - 4%, additive - 0.5%.

Bulk density materials: cement - 2500 kg / m 3, sand - 1560 kg / m 3, crushed stone - 1400 kg / m 3, water - 1000 kg / m 3.

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The list of requirements for material and technical resources is the main document for planning and organizing work on a construction site. On its basis, the duration of each work is calculated, the need for materials, machines and mechanisms, labor resources is determined. The list of requirements for materials and equipment is compiled in the following sequence:

1. On the basis of the bill of quantities of work, a list of works to be performed is drawn up;

2. From the collections of resource-estimate norms, the norms of labor consumption of workers per unit of volume (man-hour), norms of operation of machines and mechanisms (mash-hour), norms of consumption of materials for each work are written;

3. The consumption of materials, labor costs and the operating time of machines and mechanisms for the performance of a given volume for each work are calculated.

Determination of the need for material and technical resources is given in table 3.

Development of options for organizational and technological schemes for the construction of an object

The construction of almost any object can be carried out according to different organizational and technological schemes (OTC), which will ultimately lead to different results in terms of duration, labor intensity, and cost. Anticipating these results and choosing the most optimal construction option long before the start of construction is the most important task. scheduling... OTCs include:

1. Spatial division of the building into areas and areas.

2. The sequence of the construction of the building with an indication of the technological sequence of work on the seizures and areas, the selection and placement of the main assembly mechanisms.

3. Characteristics of the main methods of building the object.

Based on the analysis of space-planning and design solutions of the project, we will consider several possible options for organizational and technological construction schemes (sequential construction of a building; parallel construction with two grips using two cranes; continuous construction with three grips) and choose the most optimal one. An integrated construction schedule is being developed for each option.

After the development of enlarged network diagrams for each considered organizational and technological scheme for the construction of a specific object, a graph of the need for labor resources per day is built, the value of the coefficient of uneven movement of workers is calculated, the duration of construction is set according to the option under consideration (the length of the critical path is determined).

Choice the best option

The main TPE for the construction of an object are the coefficient of change in the number of workers, duration (actual and standard), cost, and each of them can be considered by its components.

It is always necessary to consider and evaluate several options for OTS for the construction of an object and choose an option with a shorter duration.

If the construction conditions in different versions are incomparable (more or less mechanisms, a different number of workers performing the same processes and other differences), then in this case, simultaneously with a change in the duration of construction, costs (material, labor, cost) may also change; comparing the options in this case only by the criterion of the duration of the construction of the object turns out to be inappropriate.

You can also consider options for the construction of facilities with a different number of construction machines, labor resources, but then, in order to select the optimal option, it will be necessary to determine and compare the cost costs of additional resources with the economic effect of reducing the duration of construction.

The main indicators for each enlarged network schedule are summarized in a comparison table (Table 4) and their assessment is carried out to select an option that satisfies stakeholders(customer).

Table 4

Comparison table

where E z. - operating costs (delivery of the crane; laying of crane runways; installation, dismantling of the crane; the cost of a machine shift).

In the example under consideration, according to the “duration” criterion, option No. 2 was the most preferable, assuming the shortest construction duration - 7 months, with the standard duration - 9.5 months.

In the course project for further study, we choose option number 3 (flow construction).

Development of a detailed network schedule for the selected option

Dignity network methods are as follows:

Absolutely reliably through the system of events and technological dependencies, one can see the accepted interdependence of works;

You can identify critical and non-critical work, and, accordingly, find the critical path, as the longest, characterizing the duration of construction;

Elements of the network model (graphics):

Work- This manufacturing process, requiring expenditures of working time, material resources, expenditures of computer time.

Event Is the fact of the completion of one or several works of previous works and the beginning of one or more subsequent works. In any network model, events establish the technological and organizational sequence of works.

Technological dependence(fictitious work) shows the dependence of the beginning of the execution of any subsequent work on the end of one or several previous ones and does not require either time or resources.

Expectation- a process that only requires time and does not consume any material resources. Expectation is, in essence, a technological or organizational break between work directly performed one after the other.

Critical path Is the longest path (in days) from the start to the end event.

Rice. Scheme of designation of the main elements of the network model