PUTTING MORE INTO 2242 BACKFILLING  backfilling-large.jpg

 

Work section 2242 BACKFILLING (available in Standard, Services and Structural & Civil) has been updated, expanded and provided with a revised question and answer format. The section has been partitioned with sub headings, so as to avoid confusion where a number of similar materials may be specified but for different applications.

Earth fill material clauses have been increased to cover three distinct situations:

  • earth fill which is not required to support buildings or surfaces
  • earth fill for residential developments
  • earth fill for commercial and industrial developments

A new as built document clause has also been added to suit earth fill requirements in relation to items such as the need to record areas of ground that have not meet the required standard.

This as built document clause will automatically be recognised by Masterspec's new scheduling tool. If you have not already heard about this, then click on the link for more information on this new innovation available to Nextgen 2 users.

Some specific material options that were previously included have been removed in favour of a standards based approach. Materials such as granular fill for use under slabs are described as per NZ standard requirements (NZS3604 or NZS 4229), which allows for a number of material options, some of which are described generically. The selections will still allow for the specifiers to nominate specific compliant local materials if desired. The option of specifying granular fill material for projects requiring specific design is also available.

Information for backfilling (sub-base and basecourse requirements) in relation to pavements has been refined to give more specifier options.  A distinction is made between flexible pavements (hot laid asphaltic concrete, concrete block pavers, stone block surfacing, chip seals and the like) and non flexible pavements such as concrete slabs.  The options for flexible pavements are structured to suit the intended end use, ranging from heavy traffic roads such as would be experienced on state highways through to private residential situations.  This provides some options outside of the sections in Structural and Civil, to provide information on sub-base and basecourse aggregates which may be appropriate for situations like industrial pavements that will experience heavy vehicle loading, or office carparks designed just for car parking. For actual civil roading projects, Structural and Civil sections should be used.

Additional fill options such as expanded polystyrene foam light weight fills and self -levelling flowable materials have been added.  Self-levelling flowable materials have a number of intended applications, such as filling redundant pipes or other difficult to access voids.

The section has also been expanded to provide a typical service trench bedding and backfill option, and to expand on the available backfill material options that also provide for drainage, e.g. for use behind retaining walls.

 

Retaining walls & Groundwater drainage - Standard, Landscape, Structural & Civil

In association with the updated 2242 BACKFILLING section, modifications have been made to retaining wall sections. These retaining wall sections have been edited to remove content on backfill material and groundwater drainage (drain coils), other than where the backfill material is integral to the construction of the wall (e.g. crib retaining walls).

Retaining wall backfill and drainage materials are included in section 7441 GROUNDWATER DRAINAGE, and retaining wall backfill is also included in the updated 2242 section mentioned above.

Therefore depending on the type and scale of the project consideration should be given to which section(s) to include.  If no other backfill materials are required other than drainage material to retaining walls or basement walls, then section 7441 GROUNDWATER DRAINAGE may suffice, however if the drainage backfill material was part of a more expansive project then section7441 could be altered and reference made to 2242 BACKFILLING, so that the backfill drainage material is included in the same section with other backfill materials used in the project.

The 7441 GROUNDWATER DRAINAGE section has been updated, this section covers gravity flow groundwater drainage for items such as field drains, groundwater drains to basement walls and groundwater drains to retaining walls.

Retaining walls & Groundwater drainage - Basic

To avoid issues with duplication of information, the basic retaining wall section (8110 RETAINING WALLS)  has been edited to remove content on backfill drainage material and groundwater drainage (drain coils).  This information is contained within the basic section 7430 DRAINAGE.

  »GOOGLE VERIFIED
  »ENGINEERING TERMS AND CONDITIONS
  »REVISITING OUR HERITAGE
  »FURTHER CHANGES PROPOSED TO NZBC C PROTECTION FROM FIRE
  »REDUCING PARTITION WALL FAILURE IN SEISMIC EVENTS
  »BUILDING CODE UPDATED REFERENCES
  »MEDIUM DENSITY HOUSING RESOURCE PAGE
  »SPECIFICATIONS HOW-TO
  »DETAILED ENGINEERING EVALUATION TOOLS FROM SESOC
  »BIM FOR ALL - DUMMIES OR NOT
  »MASTERSPEC'S PRODUCT RANGE SUPPORTS MULTI-DISCIPLINARY TEAMS
  »SPECIFICATIONS AND CONTRACTS
  »BUILDING ACT 2004 AMENDMENTS
  »SURFACE FIRE PERFORMANCE OF INSULATION IN PLENUMS AND DUCTS
  »CHANGES TO THE BUILDING ACT – HOW DO THEY AFFECT ARCHITECTS, DESIGNERS AND DESIGN/BUILD
  »WHAT IS THE PURPOSE OF A SPECIFICATION???
  »NZBC C PROTECTION FROM FIRE - AMENDMENTS DECEMBER 2013
  »AMENDMENTS TO NZS 4211
  »STRENGTHENING NEW ZEALAND’S STANDARDS SYSTEM – TRANSITION PROJECT
  »2014 INTERNATIONAL BIM REPORT
  »UPDATED GUIDANCE FOR EXEMPT BUILDING WORK
  »TACTILE GROUND SURFACE INDICATORS (TGSIS)
  »STREAMSIDE PROTECTION AND GUIDES TO RESTORATION
  »SEISMIC RESTRAINTS FOR GAS, WATER HEATERS & APPLIANCES
  »CHANGES TO NZBC C PROTECTION FROM FIRE - 1 JULY 2014
  »CHANGES TO H3.1 FOR SOLID TIMBER FRAMING
  »FIRE SAFETY AND DESIGN – FURTHER READING
  »AS 3566.2 WITHDRAWN BY STANDARDS AUSTRALIA BUT IN E2/AS1?
  »AIR CONDITIONING REFRIGERANT SAFETY
  »WHAT IS GOING ON WITH HEALTH & SAFETY?
  »FURTHER WORKED EXAMPLES TO ACCOMPANY THE SEISMIC DESIGN OF RETAINING STRUCTURES GUIDANCE
  »PASSIVE HOUSING – GENERAL DESIGN PRINCIPLES
  »SPECIFYING FIRE BLANKETS
  »DESIGN AND BUILD - REASONS FOR CONSENT DELAYS
  »AS/NZS 2312 SPLIT UP AND AMENDED
  »FIRE PERFORMANCE OF FLOOR COVERINGS LAID OUT
  »CODEMARK CERTIFICATION POPULAR WITH PRODUCT PARTNERS
  »LOW EMISSIVE GLASS COATINGS - SURFACE 2 OR 3 – WHAT SHOULD IT BE?
  »INTERIOR NOISE CONTROL - TRYING TO UNDERSTAND ACOUSTICS
  »MASTERSPEC INTERVIEW: ANDREW MAYNARD
  »DRAINAGE, LAYING OUT THE OPTIONS
  »ELECTRONIC LEAK DETECTION OF MEMBRANES
  »INTERIOR ELEMENTS - BUILDING CODE REQUIREMENTS CHECKLIST
  »NEW GENERIC SECTION 4239 SOFFIT CLADDING
  »SECTIONS CHANGE AS SOME INSULPRO PRODUCTS REBRANDED AS MAMMOTH
  »MASTERSPEC RELEASE 12 NEW SERVICES ENGINEERING WORK SECTIONS.
  »STRUCTURALLY FIXED CAVITY BATTENS
  »CHANGES TO THE LAMINEX GROUP
  »WORK SECTION UPDATES AND DELETIONS FOR JULY 2015
  »ALTERNATIVE TEST METHODS FOR ACHIEVING NZBC C GROUP NUMBERS.
  »CONCRETE SLABS - FREE JOINTS OR SHRINKAGE CONTROL JOINTS???
  »DRAINAGE GENERAL NAME CHANGE
  »ROOF SAFETY MESH - AS/NZS 4389 UPDATED
  »PLUMBING AND DRAINAGE - AS/NZS 3500.1 AND AS/NZS 3500.2 UPDATED
  »NEW BASIC SECTION FOR PLYWOOD AND PARTICLEBOARD FLOORS
  »GREEN BUILDING REQUIREMENTS IN THE RESIDENTIAL SECTOR
  »NEW SECTIONS FOR MASTERSPEC BASIC AND INTERIORS USERS
  »HEAT PUMP WATER HEATERS NOW AN OPTION
  »WELDING GALVANIZED OR THERMAL SPRAYED STEEL
  »MAJOR CHANGES TO THE CARPENTRY BASED SECTIONS IN MASTERSPEC BASIC AND INTERIORS
  »A COLLECTION OF COUNCIL DEVELOPMENT, SUBDIVISION AND ENGINEERING GUIDES
  »NEW NZS 4407 - ONE ROAD AGGREGATE STANDARD TO UNITE THEM ALL
  »PLUGGING INTO ELECTRIC CARS
  »PUTTING MORE INTO 2242 BACKFILLING
  »AS/NZS 3500.4 HEATED WATER SERVICES UPDATED
  »MAJOR CHANGES TO THE CONSTRUCTION CONTRACTS ACT
  »AS/NZS 1668.1 VENTILATION AND AIR-CON FIRE AND SMOKE CONTROL
  »HEALTH AND SAFETY AT WORK ACT 2015 AND THE SPECIFICATION
  »COMPATIBILITY AND ADHESION OF WET SEALS AND SILL TAPES IN WINDOW INSTALLATIONS
  »JMF TIMBER WINDOW AND DOOR JOINERY CAN BE SPECIFIED ON A ‘TEST’ BASIS
  »STEEL STRUCTURES - NZS 3404.1: 1997 VERSES NZS 3404.1: 2009
  »ASBESTOS REMOVAL NEW LICENCE REGIME
  »MBIE PRODUCT ASSURANCE SEMINARS FOR SUPPLIERS/MANUFACTURERS
  »RESIDENTIAL CONSTRUCTION HANDOVER
  »A BIG MONTH OF CHANGES TO STANDARDS
  »INTERNATIONAL BIM OBJECT STANDARD TO BE RELEASED
  »NON-COMPLIANT CONCRETE REINFORCEMENT
  »TIPS FOR SPECIFYING FIXED AUDIENCE SEATING
© 2017 Construction Information Limited
Construction Information Limited Construction Information
Powered by streamSWEET CMS  
Feedback