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NZsurv for HP50G - called NZS50

HP48GXDetails of NZsurv, the famous NZ surveying program for the HP48GX, have been updated. This program has been developed by Nicklin Surveying & Resource Management

Parts of NZsurv have been re-written to create NZS50 to run on HP50g calculators.  The basic program is the cut down version of NZsurv - NZsurv Lite with the addition of other routines.  Note that this program does not store coordinates like the full NZsurv.  The reason for this is that most modern surveyors have inbuilt COGO in their total stations and GPS's and just need a field calculator to carry out "missing line" calculations using the same ML prigram as NZsurv.

Last Updated on Saturday, 05 December 2015 08:42
 

Why is a Geotechnical report required?

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Why is a Geotechnical report required on all subdivisions?

Most Council’s now require some certification that a suitable building site can be created on each new lot in terms of NZS 3604:1999 ‘Timber Framed Buildings’.  For an engineer to certify this, a site visit and field testing is required.  The engineer will examine surrounding slopes for stability and assess the bearing quality of the subsoils.  The inherent strength of Taupo ash derived sub soils in the Cambridge area is generally assessed as being weak and need remedial work prior to house building.  If a slab foundation is required, the engineers will often specify that subsoils are removed, replaced or re-compacted to bring them up to the strength requirements of NZS3604:1999.

The engineers tests for slope stability may require a setback from the tops of banks and specify that special foundation design is required if buildings are designed over the setback area.  Usually, this means that piles are placed at a deeper level, below any possible failure plane allowing for a suitable factor of safety.

Stormwater disposal is another of Councils concerns that was not attended to on past subdivisions.  The modern philosophy is to have the subdivision shedding stormwater at the same rate that would exist if there was no development on the site i.e. the “greenfields” flow.  This means that stormwater falling on roofs, sealed access and other hard standing areas is passed through a small orifice to restrict the rate of flow to equivalent rate greenfields rate.  This is usually accomplished by the use of stormwater tanks that are either attached to the side of dwellings, or may be buried in the ground.  

The outflow from these tanks is directed away from effluent fields and potential bank scouring.  As well as attenuating flows to the greenfields rate, the engineer will identify stormwater “overland flow paths” for larger storms that may have an impact on adjoining floor levels or other infrastructure.  This is the "stormwater management plan" requirement for subdivisions.

As well as geotechnical matters and stormwater control, part of the engineers briefing is to design a suitable effluent disposal system for the residential use.  Again, the surface soils are analysed and often a percolation test is carried out.   This results in a design capacity of the soil and a suitable effluent disposal system is selected in terms of AS/NZS 1547:2000 "On-site domestic-wastewater management".  Effluent disposal control in the Environment Waikato region must be in terms of their District Plan Water Module rules 3.5.7.4-3.5.7.7.  In many cases, an “advanced” effluent disposal system is required.  The advanced systems treat the effluent in special tanks to a much lower BOD content suitable for disposal by surface dripper lines and other means as an alternative to the traditional septic tank and rock-filled effluent trench.

Whilst some clients may balk at the additional costs of these geotechnical reports, in the light of building stability, earthquake engineering and flooding problems in recent years, it is little wonder that Councils have tightened their compliance levels for subdivisions. 

A geotechnical report is now an essential part of any subdivision application and most Councils will reject an application under s88 of the Act if they consider the report does not cover the necessary detail.

Nicklin Surveying & Resource Mangement can arrange a geotechnical report to support your subdivision.

Last Updated on Sunday, 08 January 2012 21:23
 

Cambridge Expressway

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NZ Land Transport NZ (NZLTA), have committed to start the Cambridge Bypass section of the Expressway or "the motorway".  We understand this section of Expressway will be open for traffic on 16 Decemebr 2015.

 

 

Last Updated on Saturday, 28 November 2015 20:41
 

Cambridge Environmental Ltd

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cam environ finalNicklin Surveying & Resource Management has entered into a strategic alliance with Dave Timms from DTLand Developments Ltd with the formation of Cambridge Environmental Ltd.  The two Directors of Cambridge Environmental (CE Ltd for short) are Grant Nicklin and David Timms.

Last Updated on Monday, 03 January 2011 06:39 Read more...
 

Environment Waikato Farmer's Guides

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ew_logoEnvironment Waikato has published this guide in two parts – “Farmer’s guide to permitted activities - Guide 1 and 2”.  These documents are published as two A4 documents and were mailed out to all landowners recently.  We find them a valuable resource and show the links to the relevant Regional Plan rules for various farming activities such as

Last Updated on Friday, 14 January 2011 20:27 Read more...
 




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