ДСТУ EN 252:2022 Метод полевых испытаний для определения относительной защитной эффективности консерванта для древесины при контакте с землей (EN 252:2014, IDT)

ДСТУ EN 252:2022
(EN 252:2014, IDT)

Метод польових випробувань для визначення відносної
захисної ефективності консерванту для деревини
у разі контакту з землею

 
   
 
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

Foreword

Introduction

1 Scope

2 Principle

3 Wood specimens

3.1 Wood species

3.2 Wood quality

3.3 Characteristics and dimension of stakes

3.4 Number of stakes

3.5 Labelling of stakes

4 Sample of wood preservative

5 Conditioning and treatment of the stakes

5.1 Conditioning

5.2 Treating process

5.3 Determination of retention of wood preservative product

5.4 Range of preservative retention

5.5 Post treatment conditioning of stakes

6 Reference stakes

6.1 Reference preservative

6.2 Alternative reference preservative

7 Untreated control stakes

8 Condition of the test field

9 Installation of the stakes in the test field

10 Inspections

11 Evaluation

11.1 General

11.2 Attack by microorganisms

11.3 Attack by termites

11.4 Simultaneous attack by microorganisms and termites

12 Duration of the test

13 Conditions for the validity of the test

14 Test report

Annex A (informative) Guidance for the testing of wood or wood based products that have not been treated with a wood preservative

Annex В (informative) Characterization of the field test site

Annex C (informative) Example of pattern for setting up field stakes into the ground

Annex D (informative) Determination of strength characteristics in wood stakes through measuring Modulus of Elasticity

Annex E (informative) Example of a test report

Bibliography