1、September 2016 English price group 5No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 91.010.20; 93.020!%sv“2568083ww
2、w.din.deDIN 18305German construction contract procedures (VOB) Part C: General technical specifications in construction contracts (ATV) Groundwater lowering,English translation of DIN 18305:2016-09VOB Vergabe- und Vertragsordnung fr Bauleistungen Teil C: Allgemeine Technische Vertragsbedingungen fr
3、Bauleistungen (ATV) Wasserhaltungsarbeiten,Englische bersetzung von DIN 18305:2016-09Cahier des charges allemand pour des travaux de btiment (VOB) Partie C: Clauses techniques gnrales pour lexcution des travaux de btiment (ATV) Travaux dpuisement des eaux,Traduction anglaise de DIN 18305:2016-09Supe
4、rsedesDIN 18305:2015-08www.beuth.deDocument comprises 9 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.11.16 DIN 18305:2016-09 2 A comma is used as the decimal marker. Foreword This document has been prepared by the Deutscher
5、Vergabe- und Vertragsausschuss fr Bauleistungen (DVA) (German Committee for Construction Contract Procedures). Amendments This document differs from DIN 18305:2015-08 as follows: a) the document has been editorially revised; b) the references to VOB/A have been updated; c) the normative references h
6、ave been updated as of 2016-04. Previous editions DIN 18305: 1955-07, 1958-12, 1974-07, 1979-10, 1988-09, 1996-06, 2000-12, 2010-04, 2012-09, 2015-08 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its applicati
7、on. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. DIN 1960, German construction contract procedures (VOB) Part A: General provisions relating to the award of construction contracts DIN 1
8、961, German construction contract procedures (VOB) Part B: General conditions of contract relating to the execution of construction work DIN 18299, German construction contract procedures (VOB) Part C: General technical specifications in construction contracts (ATV) General rules applying to all typ
9、es of construction work DIN 18300, German construction contract procedures (VOB) Part C: General technical specifications in construction contracts (ATV) Earthworks DIN 18301, German construction contract procedures (VOB) Part C: General technical specifications in construction contracts (ATV) Drill
10、ing work DIN 18302, German construction contract procedures (VOB) Part C: General technical specifications in construction contracts (ATV) Borehole sinking operations DIN 18308, German construction contract procedures (VOB) Part C: General technical specifications in construction contracts (ATV) Lan
11、d drainage and infiltration management works DIN 18305:2016-09 3 Contents Page 0 Details required for drafting the specification of works . 3 1 Scope 6 2 Materials and components . 6 3 Execution of work 6 4 Associated tasks and special tasks 8 5 Settlement of accounts 9 0 Details required for drafti
12、ng the specification of works The following information supplements 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
13、part of the contract. The specification of works shall, in particular, include the following information as and when applicable. 0.1 Site information 0.1.1 Depths and types of foundation of structures likely to be affected by ground water lowering operations. 0.1.2 Proposed measures to establish the
14、 original condition of structures and other installations affected by the operations prior to starting work. 0.1.3 Types, design, location, number and constructional details of wells, drainage elements, groundwater gauging stations and the like. 0.1.4 Form of excavations. 0.1.5 Geological and hydrol
15、ogical data in the zone affected by the operations. Properties of the water. DIN 18305:2016-09 4 0.2 Details of execution of work 0.2.1 Objectives and scope of ground water lowering, technique to be used, drawdown levels and size of zone affected by the operations. 0.2.2 Hydrostatic water level and
16、levels to which ground water lowering is to be effected, delivery rate of pumps and maximum permissible quantities of water to be pumped per unit time. 0.2.3 Permissible maximum drawdown levels where ground water lowering is effected by infiltration. 0.2.4 Any required permissions and licences and e
17、xperts opinions to be taken into consideration in doing the work. 0.2.5 Operating schedule of ground water lowering system, including standby periods. 0.2.6 Type, location and number of pumps to be installed, and their delivery rate. 0.2.7 Type, location, number and sizes or dimensions of pipes, wel
18、l heads, pump sumps and the like to be provided. Any system components to be left in place. 0.2.8 Information on any perched and spring water to be dealt with, infiltration or surface water to be removed, and any other work to be carried out, e.g. tapping and removing water from wells, surface seali
19、ng, discharging surface water. 0.2.9 Any changes to the system as the work proceeds. 0.2.10 Any provisions to permit the ground water lowering system to be extended. 0.2.11 Type and sizing of any back-up system (e.g. emergency power supply, back-up pumps, alarm systems). 0.2.12 Provision of receivin
20、g water, method of discharge (via open conduits or pipes), and any auxiliary structures required (e.g. pipe bridges, pipe drive-overs, ditches). 0.2.13 Any particular requirements regarding discharge or infiltration of pumped water. 0.2.14 Type and scope of examinations and checks of pumped water. 0
21、.2.15 Any required installation of water meters, water quality meters and data acquisition systems. 0.2.16 Any protection of structure against uplift as a result of an unscheduled rise in water level. 0.2.17 Any precautions to protect property, structures, vegetation and the like in the zone affecte
22、d by the operations. 0.2.18 Any further precautions (e.g. set-up of emergency call-out service). 0.2.19 Decommissioning and removal of ground water lowering systems. DIN 18305:2016-09 5 0.2.20 Type and extent of any necessary water treatment. 0.2.21 Type and scope of documentation, establishing the
23、route of pipelines, any preparation of as-built drawings, any identification marking of pipeline routes or cable lines. 0.3 Details 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 d
24、escribed separately and clearly in the specification of works. 0.3.2 Such specifications may be of particular relevance in subclause 3.2.1, if the ground water lowering system is not to be designed by the contractor. 0.4 Details of associated tasks and special tasks No details are required supplemen
25、tary to those given in DIN 18299, subclause 0.4. 0.5 Accounting of works In the specification of works, accounting of works shall be based on the following: installation and removal of, and alterations to, ground water lowering systems, accounted for separately according to delivery rate: by number,
26、 provision of ground water lowering systems, accounted for separately according to delivery rate: by the day (d), operation of ground water lowering systems, accounted for separately according to delivery rate: by the hour (h), installation and removal of, and alterations to, sumps, well chambers, p
27、umps, electrical generators, power distributors, and meters: by number, installation and removal of, and alterations to, pipework and its accessories, accounted for separately according to sizes, and of/to open conduits and their accessories: by length (m); provision of wells, sumps, well chambers,
28、ground water level gauging stations, pumps, electrical generators, power distributors, and meters: by number and by the day (d), operation of wells, sumps, well chambers, ground water level gauging stations, pumps, electrical generators, power distributors, and meters: by number and by the hour (h),
29、 provision of pipework and its accessories, accounted for separately according to sizes, and of/to open conduits and their accessories: by length (m) and by the day (d), supply of operating personnel when the system is ready for service: by the hour or the day (d), supply of pipes and fittings for p
30、ermanent installation: by length (m), supply of ground water lowering system components for permanent installation: by number, supply, installation and decommissioning of well heads: by number, quantity of water pumped: by volume (m3). DIN 18305:2016-09 6 1 Scope 1.1 This standard deals with the ins
31、tallation, removal and operation of, and alterations to, ground water lowering systems where the water is discharged by way of open conduits or pipes. 1.2 This standard does not cover earthwork (see DIN 18300), drilling operations (see DIN 18301), the sinking of boreholes (see DIN 18302), or land dr
32、ainage and infiltration management (see DIN 18308). 1.3 DIN 18299, clauses 1 to 5 shall also apply. In cases where the specifications of DIN 18299 contradict the present standard, DIN 18305 shall take precedence. 2 Materials and components No details are required supplementary to those given in DIN
33、18299, clause 2. 3 Execution of work The specifications of DIN 18299, clause 3 shall be supplemented as follows: 3.1 General 3.1.1 Reservations according to VOB/B (DIN 1961), 4, clause 3 could involve in particular the following: any inadequate location of wells, any risk of hydraulic ground heave,
34、any risk of parts of the structure uplifting or subsiding or of any excessive drawdown harmful to neighbouring properties. 3.1.2 The contractor shall provide all technical documentation required to obtain official approval for the operation of the dewatering system and for the discharge of the pumpe
35、d water. 3.1.3 The client shall be notified without delay of any ground or water conditions that differ from those declared in the specification of works. The necessary work shall be agreed between client and contractor. The work involved counts as a special task (see subclause 4.2.1). 3.1.4 If the
36、risk of any harmful rise of ground water level or of hydraulic ground heave becomes evident during the work, the contractor shall immediately take any action necessary to prevent damage, and notify the client. Any further action required to prevent or repair damage shall be agreed between client and
37、 contractor. The action taken and the ensuing work count as special tasks (see subclause 4.2.1). 3.1.5 The client shall be notified immediately of any damage that may be due to the ground water lowering operations. DIN 18305:2016-09 7 3.2 Design of ground water lowering system 3.2.1 The contractor s
38、hall design the ground water lowering system (scope, efficiency, output and safety) to suit the particular application, taking into account any information and documentation of the client regarding the local hydrological and geological conditions. Upon request, the contractor shall provide proof tha
39、t the system is adequately designed by providing information on, in particular: its general layout, the location of sumps, drainage elements or wells (with details of type, location, elevation and depth), the siting of pumps and their capacity, the type of energy used and the energy requirement, the
40、 routing, size and length of pipes, the type of monitoring and documentation, the proposed safety features (e.g. emergency power supplies, back-up pumps, emergency call-out service, alarm systems). Subsequent significant deviations from these specifications are only permitted with the clients consen
41、t. 3.2.2 If provision of a back-up system has been agreed, this shall be kept ready in such a way that operation can continue without any detrimental interruption. 3.3 Pumping and removal of water 3.3.1 The quantity of water pumped and its soil particles content shall be established. The pumped wate
42、r shall be checked visually and by its odour. The findings shall be documented. Any further tests count as special tasks (see subclause 4.2.1). 3.3.2 If springs are encountered, the method used to tap them and to remove water shall be agreed. The necessary work counts as a special task (see subclaus
43、e 4.2.1). 3.4 Rise in water level 3.4.1 Once the water level has been lowered, the contractor shall not allow it to rise again, except with the clients consent. 3.4.2 Any measures agreed against an unscheduled rise in water level shall be prepared so that they can be put into immediate action when r
44、equired. The client shall be notified without delay of any circumstances liable to involve a dangerous rise in water level. The necessary work shall be agreed between DIN 18305:2016-09 8 client and contractor. Unless the contractor is at fault, the work involved counts as a special task (see subclau
45、se 4.2.1). 4 Associated tasks and special tasks 4.1 In addition to those specified in DIN 18299, subclause 4.1, in particular the following also count as associated tasks: 4.1.1 Establishing the condition of roads, of the ground surface, of receiving waters, etc., in accordance with VOB/B (DIN 1961)
46、, 3, clause 4. 4.1.2 Monitoring and recording the ground water level on site. 4.1.3 Testing the performance of the ground water lowering system, except for work specified under subclause 4.2.11. 4.2 In addition to those specified in DIN 18299, subclause 4.2, the following also count as special tasks
47、: 4.2.1 The special tasks in accordance with subclauses 3.1.3, 3.1.4, 3.3.1, 3.3.2 and 3.4.2. 4.2.2 Ground and water investigations and hydrological surveys. 4.2.3 Provision, installation, operation and removal of water meters and water quality meters. 4.2.4 Provision, installation, operation and re
48、moval of automatic data acquisition systems, and recording of data. 4.2.5 Provision, installation and removal of ground water gauging stations. 4.2.6 Monitoring and recording the ground water level outside the site. 4.2.7 Preparation of receiving water and reinstating it to its original condition. 4
49、.2.8 Alterations to parts of the ground water lowering system, except for those which the contractor needs for his own purposes. 4.2.9 Leaving system components in the ground, if the client so requests. 4.2.10 Payment of fees and charges for the use of the receiving water and its discharge. 4.2.11 Trial run of the ground water lowering system. 4.2.12 Decommissioning and backfilling of sumps. 4.2.13 Obtai
