DIN 18321-2016 German construction contract procedures (VOB) - Part C General technical specifications in construction contracts (ATV) - Jet grouting work《德国建筑包工合同程序 (VOB) 第C部分 建筑包.pdf

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7、 l b e c o n s i d e r e d a u t h o r i t a t i v e .11.16 DIN 18321:2016-09 2 A comma is used as the decimal marker. Foreword This document has been prepared by the Deutscher Vergabe- und Vertragsausschuss fr Bauleistungen (DVA) (German Committee for Construction Contract Procedures). Amendments T

8、his document differs from DIN 18321:2015-08 as follows: a) the document has been editorially revised; b) the references to VOB/A have been updated; c) the normative references have been updated as of 2016-04. Previous editions DIN V 18321: 2002-07 DIN 18321: 2002-12, 2010-04, 2012-09, 2015-08 Normat

9、ive references The following documents, in whole or in part, are normatively referenced in this document and are indispens-able for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments)

10、applies. DIN 1960, German construction contract procedures (VOB) Part A: General provisions relating to the award of construction contracts DIN 1961, German construction contract procedures (VOB) Part B: General conditions of contract relating to the execution of construction work DIN 4020, Geotechn

11、ical investigations for civil engineering purposes Supplementary rules to DIN EN 1997-2 DIN 4023, Geotechnical investigation and testing Graphical presentation of logs of boreholes, trial pits, shafts and adits DIN 4123, Excavations, foundations and underpinnings in the area of existing buildings DI

12、N 4094-4, Subsoil Field testing Part 4: Field vane test DIN 18122-1, Soil, investigation and testing Consistency limits Part 1: Determination of liquid limit and plastic limit DIN 18123, Soil, investigation and testing Determination of grain-size distribution DIN 18126, Soil, investigation and testi

13、ng Determination of density of non-cohesive soils for maximum and minimum compactness DIN 18321:2016-09 3 DIN 18128, Soil Investigation and testing Determination of ignition loss DIN 18136, Soil Investigation and testing Unconfined compression test DIN 18137-2, Soil, investigation and testing Determ

14、ination of shear strength Part 2: Triaxial test DIN 18196, Earthworks and foundations Soil classification for civil engineering purposes DIN 18299, German construction contract procedures (VOB) Part C: General technical specifications in construction contracts (ATV) General rules applying to all typ

15、es of construction work DIN 18301, German construction contract procedures (VOB) Part C: General technical specifications in construction contracts (ATV) Drilling works DIN 18309, German construction contract procedures (VOB) Part C: General technical specifications in construction contracts (ATV) G

16、round treatment by grouting DIN EN 1997-2, Eurocode 7: Geotechnical design Part 2: Ground investigation and testing DIN EN 1997-2/NA, National Annex Nationally determined parameters Eurocode 7: Geotechnical design Part 2: Ground investigation and testing DIN EN 12716:2001-12, Execution of special ge

17、otechnical works Jet grouting DIN EN ISO 14688-1, Geotechnical investigation and testing Identification and classification of soil Part 1: Identification and description DIN EN ISO 14688-2, Geotechnical investigation and testing Identification and classification of soil Part 2: Principles for a clas

18、sification DIN EN ISO 14689-1, Geotechnical investigation and testing Identification and classification of rock Part 1: Identification and description DIN EN ISO 17892-1, Geotechnical investigation and testing Laboratory testing of soil Part 1: Determi-nation of water content DIN 18321:2016-09 4 Con

19、tents Page 0 Details required for drafting the specification of works . 4 1 Scope 6 2 Materials and components . 6 3 Execution of work 8 4 Associated tasks and special tasks 10 5 Settlement of accounts 11 0 Details required for drafting the specification of works The following information supplement

20、s the general information specified in DIN 18299, clause 0. Without this information, a specification of works as required in 7 ff., 7 EU ff. or 7 VS ff. of VOB/A (DIN 1960) cannot be properly drawn up. This information does not form part of the contract. The specification of works shall, in particu

21、lar, include the following information as and when applicable. 0.1 Site information 0.1.1 Objectives of jetting operations (e.g. permanent or temporary structure). 0.1.2 Any obligations and conditions imposed as a result of approval. 0.1.3 Geotechnical conditions, with details as in DIN EN 12716:200

22、1-12, clause 5, and location of, for instance, any temporary structures left in the ground. 0.1.4 Depth and types of foundation and constructional details of, and loads from, neighbouring structures. 0.1.5 Working space available for jetting operations and space for treatment of spoil return. DIN 18

23、321:2016-09 5 0.2 Details of execution of work 0.2.1 Description and classification of soil, rock and other materials in accordance with clause 2. 0.2.2 Results of probes to determine density/compactness. 0.2.3 Types, location and dimensions of jet grouted elements. Permissible deviations. Working s

24、equence, where relevant. 0.2.4 Requirements regarding strength, permeability and chemical resistance of grouted elements. 0.2.5 Any special measures to protect neighbouring land and structures during jetting operations. 0.2.6 Strength, permissible deformations and stability of neighbouring structure

25、s and building elements affected by drilling and jetting operations. 0.2.7 Permissible deformation of the ground and permissible movement of structures, and any measures for monitoring deformation. 0.2.8 Any special requirements to be met by the parts of boreholes that are not to be grouted, unless

26、hardened grout residue is permitted to remain. 0.2.9 Any special requirements regarding the form grouted structures are to take, and tolerances to be met. 0.2.10 Type and condition of working levels. 0.2.11 Directions regarding deadlines for handing over logs, records and other documents. 0.3 Detail

27、s not included in the specifications of this standard 0.3.1 If specifications are to be made that are not included in the specifications of this standard, they shall be described separately and clearly in the specification of works. 0.3.2 Such specifications may be of particular relevance in: subcla

28、use 3.1.2, if the choice of jetting technique is not to be left to the contractor, subclause 3.2.1, if the jetting system, jet grouting parameters or the working sequence are not to be left to the contractor. 0.4 Details of associated tasks and special tasks The following are especially likely to re

29、quire separate itemization in accordance with subclause 0.4.1 of DIN 18299: moving the grout preparation and jetting equipment from one injection hole to another (see subclause 4.1.5). DIN 18321:2016-09 6 0.5 Accounting of works In the specification of works, accounting of works shall be based on th

30、e following units, accounted for separately according to homogeneous zone and soil type, and mix of grouting material: making grouted elements: by jetting length (m), performance of tests, grouped according to method used, removal of any excess material: by area of exposed surface (m2), disposal of

31、spoil return: by volume (m3) or mass (kg, t), removal of soil containing hardened grouting material from working levels: by number, grouped according to working sections, moving equipment from one injection hole to another grouped according to distance: by number, making preliminary elements, includ

32、ing tests: by number. 1 Scope This standard covers jet grouting operations for the purpose of enhancing the water impermeability of soil, rock and backfill. 1.2 This standard does not cover the associated drilling work (see DIN 18301), grouting other than jet grouting (see DIN 18309). 1.3 DIN 18299,

33、 clauses 1 to 5 shall also apply. In cases where the specifi-cations of DIN 18299 contradict the present standard, DIN 18321 shall take precedence. 2 Materials and components The specifications of DIN 18299, clause 2 shall be supplemented as follows: 2.1 General The materials used for jet grouting s

34、hall conform to the specifications of DIN EN 12716. 2.2 Materials The contractor shall ascertain that the raw materials and the suspensions used for jetting comply with the requirements specified in DIN EN 12716:2001-12, clause 6, and provide proof of such if requested by the client. DIN 18321:2016-

35、09 7 2.3 Description of soil and rock For the identification and description of soil and rock the following apply: DIN 4020 DIN 4023 DIN 4094-4 DIN 18122-1 DIN 18123 DIN 18126 DIN 18128 DIN 18136 DIN 18137-2 DIN 18196 DIN EN 1997-2 DIN EN 1997-2/NA DIN EN ISO 14688-1 DIN EN ISO 14688-2 DIN EN ISO 14

36、689-1 DIN EN ISO 17892-1 2.4 Classification of soil and rock into homogeneous zones Prior to the jet grouting work, soil and rock shall be classified into homogeneous zones, depending on their condition. A homogeneous zone is a limited area comprising one or more soil or rock strata that, for jet gr

37、outing work, exhibit comparable properties. If these contain substances that are of environmental relevance, these shall be taken into consideration when classifying the soil or rock into homogeneous zones. For the homogeneous zones, the following properties and characteristics together with their r

38、ange, as determined, shall be indicated. Information is given below on the standards or recommendations with which these characteristics can be verified, where applicable. If several methods are possible, one standard or recommendation shall be specified. For soil: local designation, grain-size dist

39、ribution with bandwidths according to DIN 18123, proportion of cobbles, boulders and large boulders according to DIN EN ISO 14688-1, determined by separating and measuring or sieving, then weighing and referring the results to the overall mass of excavated material, DIN 18321:2016-09 8 undrained she

40、ar strength according to DIN 4094-4, DIN 18136 or DIN 18137-2, water content (according to DIN EN ISO 17892-1), plasticity index (according to DIN 18122-1), consistency index (according to DIN 18122-1), density/compactness: definition according to DIN EN ISO 14688-2; determination according to DIN 1

41、8126, organic matter content according to DIN 18128, and soil groups according to DIN 18196. For rock: local designation, identification of rock according to DIN EN ISO 14689-1, weathering and alteration effects, stability according to DIN EN ISO 14689-1. 2.5 Description and classification of man-ma

42、de ground and other materials Fill and materials other than soil and rock (e.g. building components, recycled materials, industrial by-products, waste and soil containing foreign matter) shall normally be described and classified in accordance with subclauses 2.3 and 2.4, respectively. Otherwise, th

43、ey are to be described in terms of their suitability for use in jet grouting. 3 Execution of work The specifications of DIN 18299, clause 3 shall be supplemented as follows. 3.1 General 3.1.1 For specifications relating to underpinning and jetting operations, the following apply: DIN 4123 DIN EN 127

44、16. 3.1.2 The choice of construction schedule and the choice and deployment of equipment shall be left to the contractor. DIN 18321:2016-09 9 3.1.3 Before work commences, the contractor and the client are jointly to inspect the site to establish, and to document, the condition of structures and serv

45、ices within the injection zone (see VOB/B (DIN 1961), 3, clause 4). 3.1.4 The temporary storage and disposal of the spoil return shall be the responsibility of the contractor. 3.1.5 On the clients request, the contractor shall provide proof of having properly disposed of any residues (spoil return a

46、nd excess material). 3.2 Jet grouting 3.2.1 The choice of jetting process, jet grouting parameters and the working sequence shall be left to the contractor. Where jet grouting parameters are known from preliminary tests, these parameters shall be used. 3.2.2 If the target parameters are not achieved

47、, the contractor shall notify the client immediately. The necessary work shall be agreed between client and contractor. Unless the contractor is at fault, the work involved counts as a special task (see subclause 4.2.1). 3.2.3 If the contractor identifies any risks (e.g. to the stability of structur

48、es) as a result of jetting operations, he shall notify the client without delay. If there is imminent danger, the contractor shall immediately undertake the necessary work. The ensuing work shall be agreed between client and contractor. Provided the contractor cannot be held responsible, the action taken and the ensuing work count as special tasks (see subclause 4.2.1). 3.2.4 After completion of the jetting operations, the suspension level shall be maintained until the hardening process is complete. If there is an unexpected loss of susp