Sub-divided commercial properties

Sub-divided commercial properties

Part 2 – an ancient specimen

While investigating the hardware in our client’s half-century old warehouse we came across this vintage sprinkler.

Kraft Crt Broady

Image 3 – sprinkler fitting on sprinkler branch line, running just under the roof


Note the older style trigger device. Metal tabs made of lead  (Pb) are set to soften at the trigger temperature, allowing the valve to open under the constant water pressure.

Stamped on the sprinkler head is 160 degrees. This would be the trigger temperature, in degrees Fahrenheit, at which the lead tabs would give way – equivalent to about 75 degrees Celsius.



This item indicates its date of manufacture, 1966, which is consistent with our understanding of the age of the original part of the warehouse.

Look out for Sub-divided commercial properties – Part 3

Talking book articles from ME mag

Talking book articles from ME mag

Drew is interested in providing regular Blog posts for the benefit of our clients. He also wants to provide some reference to trade magazines; such periodicals as The Master Electrician, Facility Perspective (for Facility Managers and their support contractors) and Fire Australia (from FPA). Send us an email with your feedback. So here is my idea – Talking book articles from ME mag … and others. You can use these like a podcast, which you may find more accessible than reading the magazine itself.

Here goes

Firstly From the Oct2017 issue of The Master Electrician magazine

  • The Contents list SDR_0003
  • Article about AS3000 revision due out soon : SDR_0004
  • Article about Tesla FarmsSDR_0007

Here is a link to Fire Australia, the FPA magazine site

And from the Facility Perspective – relevant to our Essential Safety Measures area of business.

  • Article about Non-compliant claddingSDR_0006

Once again here is that familiar image.




Send an email to request for to tell us what other articles to record.



Sub-divided commercial properties

Sub-divided commercial properties

Part 1

Last month we were called to investigate the fitness for purpose of the fire protection equipment – wet side – in a property our client has owned for several years.

Kraft Crt Broady

Image 1 sprinkler valve manifold

The building had originally been built half a century ago as an East-West running warehouse. Over the years a number of substantial extensions had been added at each end. A sprinkler isolation manifold was required and was added to, as can be seen – Image 1. Our client’s property looks like it was part of the original build.

About a decade ago the entire building was sub-divided and sold-off as separate compartments, isolated by closing off doorways in the existing North-South walls, and adding new walls where required. This happened a couple of years before our client bought in.

Kraft Crt Broady

Image 2 – the hydrant and sprinkler mains run overhead

The original building featured a 200 NB hydrant ring main and 150 NB sprinkler supply – both lines run East -West inside the North and South building walls, just under the roof line – Image 2. As each major extension was built, it appears the ring main piping had also been extended, to the East or the West as required. Today, these ring mains are common to all the new owners.

Our initial area of focus was investigation of the adequacy of this protective equipment for our client’s ongoing business. It also quickly became apparent that routine servicing and testing of this equipment would need to involve all the current owners.

No drawings & drawing conflicts

Disappointingly but not unusually, there are no available drawings of where these lines run, how they connect to the mains supply or interconnect to the hydrant branches or sprinkler water distribution lines. Concerningly there are at least two versions of the block drawings for the sprinkler isolation valve manifold – and they are not in agreement. This means that time and water could be wasted trying to establish partial isolation during a fire event.

Look out for Sub-divided commercial properties – Part 2