W 113 Technical Rule - Standard 03/2001
Determination of gravel-pack diameter and hydrogeological analysis of grain size distribution for purposes of well construction ++ PDF file ++
- Herausgeber/Verlag: DVGW
- Format: 21 pages
- Material: available as PDF only
- Ausgabe: 3rd edition 2001
- Hinweis: German version W 113
- Verkaufseinheit: 1
- Mindestabnahme: 1
- Artikel-Nr.: 510251
59,59 €*
1 Scope
2 Definitions
3 Introduction
4 Sampling and selection of samples
5 Determination and illustration of grain size distribution
5.1 General
5.2 Sieving analysis
5.2.1 Sieving machine
5.2.2 Analysis sieves
5.2.3 Sieving
5.2.3.1 General
5.2.3.2 Dry sieving
5.2.3.3 Wet sieving
5.3 Representation of the grain size distribution
6 Evaluation of grain size distribution
6.1 Determination of the required gravel-pack diameter (DS)
6.1.1 General
6.1.2 Determination of the decisive grain diameter (dg)
6.1.3 Determination of the filter coefficient (Fg)
6.1.4 Selection of gravel-pack category
6.2 Determination of coefficient of hydraulic conductivity and of porosity
6.2.1 General
6.2.2 Coefficient of hydraulic conductivity (kf value)
6.2.3 Porosity
7 Examples
8 Technical rules and literature
Annex A: Data sheet for sieving analyses (examples)
Annex B: Cumulative and distribution curves (examples from Annex A)
Annex C: Form for sieving analyses acc. to DVGW Technical Bulletin W 113
Annex D: Form for cumulative and distribution curves