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SNIP 2.01.07-85 - determination and registration of temporary and permanent loads

SNIP 2.01.07-85 * - Loads and effects.

building regulations

loads and impacts

SNIP 2.01.07-85 *

MOSCOW

2003

DESIGNED CNIISK... Kucherenko USSR State Construction Committee (Candidate of Technical Sciences A. Bach - Head of topics; Belyshev IA, Candidate of Technical Sciences VA retired, Doctor of Technical Sciences Prof. VD Raiser, AI....Zeitlin) MICE.VVKuibyshev USSR Ministry of Higher Education (cand. Tehn. Sciences LV Klepikov).

INCLUDED CNIISK.Kucherenko USSR State Committee.

prepared for approval Glavtehnormirovaniem USSR State Construction Committee (cand. Tehn. Sciences FV Beavers).

In SNIP 2.01.07-85 * amended № 1, approved by the USSR State Committee on 07.08.88, the number 132, as well as the added section.10 "The deflection and movement" developed CNIISK... Kucherenko USSR State Construction Committee (Candidate of Technical Sciences A. Bach - Head of topics;. Corresponding Member of the Academy of Sciences of the USSR NN-knit, Doctor of Technical Sciences Professor A. Zeitlin,

candidate of technical sciences in the....a. retired, EA Neustroev, Ing. Belyaev BI) NIIZhB USSR State Construction Committee (Doctor of Engineering, Professor of Sciences. Zalesov AS) and TsNIIpromzdany USSR State Construction Committee (the candidate tehn. Sciences LL. Lemysh, EN Kodysh).

With the introduction of the Section.10 'Deflections and displacements "SNIP 2.01.07-85 from January 1, 1989 are repealed paragraphs.13.2-13.4 and 14.1-14.3 SNIP II-23-81 *.

set out in the new edition of "The deflection and displacement of structural elements must not exceed the limits set by SNIP 2.01.07-85" following items:

  • 13.1 SNIP II-23-81 * «Steel Structures";.
  • 9.2 SNIP 2.03.06-85 "Aluminium constructions".;
  • paragraph 1.20 SNIP 2.03.01-84 «Concrete and reinforced concrete structures.";
  • paragraph 4.24 SNIP 2.03.09-85 "Asbestos cement structure.";
  • paragraph 4.32 SNIP "Timber structures.";
  • para. 3.19 of SNiP "treatment, industrial enterprises."

In SNIP 2.01.07-85 * amended number 2, approved by the Construction Committee of Russia on May 29, 2003 № 45.

Points tables, formulas and maps, in which the changes are marked with an asterisk.


State Committee for Construction of the USSR
(Gosstroy USSR)
Building Regulations SNIP 2.01.07-85 *
Loads and effects Instead, the head of SNIP II-6-74

These standards apply to the design of building structures and foundations of buildings and structures and establish the basic rules and regulations for the identification and registration of permanent and temporary loads and impacts, as well as combinations thereof.

Loads and effects on building structures and grounds of buildings and structures that differ from the traditional, may be determined by special technical conditions.

Notes: 1. Hereinafter, where appropriate, the term "impact" is omitted and replaced by the term "load" and the word "buildings and structures" are replaced by the word "construction".

2. During the reconstruction of the calculated load values ​​should be determined on the basis of the results of a survey of existing structures, and the atmospheric load may be taken based on the data of Roshydromet.

1. GENERAL PROVISIONS

1.1.The design should take into account the stresses resulting from the construction and operation of facilities, as well as in the manufacture, storage and transportation of building structures.

1.2.The main characteristics of the loads established in these rules, are their normative values.

load is characterized by a certain type, as a rule, a standard value.For loads of people, animals, equipment floors of residential, public and agricultural buildings, on bridges and overhead cranes, snow, temperature climate impacts is equipped with two standard values: full and reduced (injected into account, if necessary taking into account the effect of duration of load, testing the enduranceand in other cases specified in the standards for design of structures and foundations).

1.3.Estimated value of the load should be defined as the product of its normative value on the safety factor for load gf, appropriate to the limit state and received:

a) *, with respect to the strength and stability - in accordance with Nos.2.2, 3.4, 3.7, 3.11, 4.8, 6.11, 7.3 and 8.7;

b) in the calculation of endurance - equal to one;

c) in the calculation of the deformations - equal to one if the structural design standards and the grounds are not set other values;

g) the calculation of other types of limit states - according to the norms of designing structures and foundations.

Design values ​​of loads in the presence of the statistics may be determined directly by a given probability of exceedance.

When calculating the structures and foundations for the conditions of the construction of buildings and facilities design values ​​of snow, wind, ice loads and temperature climate impacts should be reduced by 20%.

If necessary, based on the strength and stability under fire conditions, when the explosive effects, collision of vehicles with parts of structures reliability coefficients for all load into account when it loads should be equal to unity.

Note.For loads with two standard values ​​corresponding to the calculated values ​​should be determined with the same coefficient of reliability for the load (for the considered limit state).

(Revised edition. Chg. Number 2).

CLASSIFICATION OF LOADS

1.4.Depending on the duration of the load action should distinguish between permanent and temporary (long, short, specific) load.

1.5.Stresses arising in the manufacture, storage and transport structures, and in the construction of buildings, should be considered in the calculation as a load transient.

Made
CNIISK.Kucherenko
USSR State Construction Committee approved


decree of the USSR State Committee on

construction works on August 29, 1985 № 135
Term
introduction

into effect January 1, 1987

stresses arising at the stageoperation of facilities, should be considered in accordance with paragraphs.1.6 - 1.9.

1.6.For constant loads should be included:

a) weight parts of buildings, including weight bearing and enclosing structures;

b) the weight and pressure of soils (embankments, fillings), rock pressure.

saved in the design or based on the efforts of prestressing to be taken into account in the calculations as the efforts of the permanent loads.

1.7 *.For long-term loads should be included:

a) the weight of temporary partitions, gravies and podbetonok for equipment;

b) fixed equipment weight: machinery, apparatus, engines, tanks, piping with fittings, parts support and insulation, belt conveyors, permanent lifting machines with their ropes and guides, as well as the weight of liquids and solids, filling equipment;

c) the pressure of the gases, liquids and granular materials in tanks and pipelines, excess air pressure and vacuum that occurs when a mine ventilation;

d) the load on the overlap of the stored goods and storage equipment in warehouses, cold stores, granaries, storerooms, archives and similar areas;

d) the impact of thermal processing on stationary equipment;

e) a layer of water on the weight of the water-filled flat surfaces;

g) the weight of industrial dust deposits, if it is not possible accumulation of relevant activities;

h) load of people, animals, equipment floors of residential, public and agricultural buildings with reduced standard values ​​given in Table.3;

and) vertical load on the bridge and overhead cranes with a reduced standard value determined by multiplying the total of the normative value of the vertical load from a crane (see section 4.2) in each building to span ratio:.. 0.5 - Group operating modes 4Q cranes-6K;0.6 - for a group mode 7K cranes;0.7 - for a group mode 8K cranes.Groups accepted modes of cranes in accordance with GOST 25546-82;

to) snow loads with a reduced estimated value determined by multiplying the total estimated value by a factor of 0.5;

l) the impact of climate temperature with reduced standard values ​​determined in accordance with the instructions of paragraphs.8.2-8.6 on condition q1 = q2 = q3 = q4 = q5 = 0, DI = DVII = 0;

m) the impact caused by deformations of the base, is not accompanied by fundamental changes in the structure of the soil, as well as thawing permafrost;

n) effects caused by humidity change, shrinkage and creep of materials.

Note.In areas with an average January temperature of -5 ° C or higher (on the map 5 Annex 5 to SNIP 2.01.07-85 *) snow loads with a reduced design value is not set.

(Revised edition. Chg. Number 2).

1.8 *.For short-term loads should be included:

a) the load on the equipment, resulting in puskoostanovochnom, transitional and test modes, as well as its rearrangement or replacement;

b) the weight of people, repair materials in the areas of maintenance and repair of equipment;

c) load of people, animals, equipment floors of residential, public and agricultural buildings with full normative values, except for the forces in paragraph 1.7, a, b, d, e.;

g) load from the mobile handling equipment (forklifts, electric vehicles, stacker cranes, hoists, as well as bridges and overhead cranes with full standard value);

d) snow loads with a full design value;

e) temperature climatic effects with full standard value;

g) wind loads;

h) ice load.

(Revised edition. Chg. Number 2).

1.9.The special stress should be included:

a) seismic effects;

b) explosive impact;

c) load caused severe disturbance of the process, a temporary malfunction or equipment failure;

g) the impact caused by deformations of the base, accompanied by fundamental changes in soil structure (for soaking the soil subsidence) or settling it in the areas of mining and in karst.

load combinations

1.10.Calculation of structures and foundations for the limiting conditions of the first and second groups should be carried out taking into account the unfavorable combinations of loads or their respective efforts.

These combinations are established from the analysis of real options of simultaneous action of various loads for the given stage of the construction work or the base.

1.11.Depending on the composition of the load should be taken into account to distinguish:

a) the basic load combinations, consisting of permanent, long-term and short-term;

b) special load combinations consisting of a permanent, long-term, short-term and one of the special loads.

Temporary load with two standard values ​​should be included in the combination of a long - taking into account the reduced regulatory matter how brief - taking into account the full standard value.

in special combinations of loads, including explosive impact or load caused by the collision of vehicles with parts of the plants, allowed ignore the short-term load specified in Sec. 1.8. *

1.12.When combinations of registered, permanent and comprising at least two live loads, live loads calculated values ​​or corresponding effort should be multiplied by combinations of coefficients equal to:

combinations in major loads for long y1 = 0,95;for short-term y2 = 0,9;

in specific combinations for long loads y1 = 0,95;for short-term y2 = 0,8, except as provided in the rules of designing buildings for seismic areas and in other norms of designing structures and foundations.In this particular strain to be taken without loss.

When taking into account the basic combinations that include permanent load and one temporary load (long-term or short-term), the coefficients y1, y2 should not be administered.

Note.The key combinations, taking into account three or more transient loads of the calculated values ​​may be multiplied by a factor of a combination of y2, received for the first (the degree of influence) of short-term load - 1.0, for the second - 0.8, for the rest - 0.6.

1.13.. When accounting for load combinations in accordance with the instructions of paragraph 1.12 of one temporary load should be taken:

a) load a certain kind of a source (or negative pressure in the tank, snow, wind, ice load, temperature climate impact load from a truck, electric vehicle, a bridge crane or suspended);

b) the load from multiple sources, if their combined effect is taken into account in the normative and the estimated value of the load (the equipment burden people and stored materials on one or more floors, taking into account factors yA and yn, given in paragraphs 3.8 and 3.9;. Loadfrom several bridge or overhead cranes, taking into account the coefficient of y, given in paragraph 4.17;. icing and wind load, determined in accordance with clause 7.4)..

2. WEIGHT STRUCTURES AND SOIL

2.1.The standard value of weight constructs prefabricated should be determined on the basis of standards, working drawings or passport data of manufacturers and other building structures and ground - on project size and the specific weight of materials and soil, taking into account their moisture conditions in the construction and operation of facilities.

2.2.Reliability coefficients gf load for the weight of building structures and grounds are given in Table.1.

Table 1

Construction structures and type of soil safety factor for load gf
Construction:
metal 1,05
concrete (at an average densitymore than 1600 kg / m3), concrete, masonry, reinforced masonry, wood 1,1
concrete (with an average density of 1600 kg / m3 or less), insulating, leveling and finishing layers (slabs, materials in rolls, infiltration, ties, etc.) performed:
factory 1,2
at the construction site 1,3
Soils:
innatural occurrence 1,1
bulk 1,15

Notes: 1. when checking the stability of structures on the provisions against tipping, as well as in other cases where weight reduction structures and soils may worsen conditionsstructural work, should settle, taking the weight of the structure or its load gf = 0,9 safety factor.

2. When determining the load from the ground to consider the load from stored materials, equipment and vehicles to be transmitted to the ground.

3. For metal structures in which the efforts of its own weight exceed 50% of the total effort should be made gf = 1,1.

3. LOAD EQUIPMENT, people, animals, the stored MATERIALS AND PRODUCTS

3.1.The provisions of this section apply to load from people, animals, equipment, products, materials, temporary partitions, acting on the slab buildings and floors on the ground.

Options uploading overlapping these loads should be taken in accordance with the conditions provided for the construction and operation of buildings.If the design stage data on these conditions are not sufficient, in the calculation of structures and foundations need to consider the following options for uploading individual floors:

continuous uploading adopted load;

adverse partially downloaded in the calculation of structures and foundations that are sensitive to such a scheme of loading;

no load time.

This total temporary load on the floors of multi-storey buildings in unfavorable partial uploading them should not exceed the burden under continuous uploading of overlap defined taking into account the combination of factors yn, the values ​​of which are calculated according to the formulas (3) and (4).

DETERMINING LOADS ON EQUIPMENT, MATERIALS AND PRODUCTS Stored

3.2.7;13;Chg.