This month has kicked off with some wild weather. Intense rainfall has sent the state of New South Wales into havoc. In fact, it was the wettest weekend Sydney has seen since 1998.
After months of devastating fires, you would expect reprieve in the wake of waters presence. However, the capacity of water seems to be doing more damage than good. And conditions are getting out of hand.
"Evacuation warnings have been issued by the SES as emergency services beg people to stay off the road and work from home", news.com.au.
As water is gushing down roads, we hope that you are keeping safe - and dry! And, if you're not dry in the safety of your own home, then that's where BellMont can help. If you're experiencing leaks or flooding, it's likely that there's a failure in your membrane barrier. Check out our waterproofing services here and call us out for an inspection today.
Read some of our waterproofing case studies here.
When it comes to buildings that have been damaged by water, there are three methods of repair an engineering consultant can use, these are either a membrane, cavity flashing or damp proof course. Not sure what any of these are? Read on to find out!
A waterproofing membrane is a thin layer of watertight material that is laid, injected into or sprayed onto a surface to prevent water from passing through. There are three different types of membranes that can be used, these are sheet, liquid and injectable, which all achieve the same outcome but through different applications.
This type of waterproofing method involves a continuous sheet of waterproofing material that is installed across the gap of a cavity wall. Cavity flashings run along the length of a wall, diverting water out through weep holes, thus keeping the structural integrity of the building intact.
Damp Proof Courses:
And finally, Damp Proof Courses. DPCS are a layer of waterproof material in the wall of a building near the ground, to prevent rising damp. DPCS help to prevent excess moisture entering the building which in turn prevents serious structural damage and issue such as wet rot, dry rot, timber decay, rising damp and black mould.
And that’s it for solutions to waterproofing issues within your building. So now if an engineer comes to inspect your building in response to water damage within your building you’ll know exactly what they’re talking about!
One of the first buildings to be constructed on the highest point of Kings Cross Rd, Francis Hall, is a multilevel residential building of Heritage Significance. The façade is dominated by intricate corbels, features and cantilevered balconies surrounded by impressively detailed mouldings.
Bellmont was engaged to provide professional services for the façade refurbishment which involved repairs to delaminating render, lintels, windows, replacement of structural supporting beams and façade coating works. MDP Group was the contractor on site. During the works, it was established that the cantilevered balconies to the southern elevation were under-reinforced and corrosion of the steel reinforcing bars was well progressed.
In order to minimise effects on the project program, Bellmont designed new reinforced concrete balconies reliant in port on the shear mass of the existing structure above to support the new balconies. The design incorporated hot dip galvanised reinforcement and pre-bagged polymer modified concrete to achieve the high early strength required for early dismantling of temporary supports.
Original mouldings and corbels were measured and moulds taken in order to allow replicas to be constructed and reinstalled prior to project completion. The façade will be completed with a high quality elastomeric membrane and the new balconies waterproofed to provide added protection against water and chloride ion ingress for many years to come.
3 - 5 Darley Street Darlinghurst is effectively two majestic old brick fronted buildings constructed in the early 1900’s. Having been well maintained for many years, the roof membrane had now exceeded its service life and was due for renewal. Additional structural distress was also noted on the ground level brick facade requiring structural restrengthening works.
A Scope of Works was prepared by BellMont addressing structural restrengthening works and the installation of a new membrane compatible with the existing. Owing to the original construction of the building roof area, the new membrane was required to be detailed into the building parapet walls and continue over the parapet to ensure a continuous waterproof seal. The further requirement dictating the selection of the membrane system was the minimal time frame available for installation and curing. As such, the Emer-Clad liquid trafficable membrane system was specified for the roof membrane system.
Structural restrengthening to the façade was undertaken utilising a combination of reinforcing bars systems supplied by Helifix. The structural intent of the strengthening was to form a single structural panel at the lower levels by tying the brickwork together.
As work progressed, it was noted that while the original membrane had indeed failed, it was not the only source of water penetration—many hidden and empty service lines service lines to the laundry were found to be filled with water and draining beneath the membrane.
Over the years the pipes from the wet areas had corroded, been updated or partly disconnected so that the waste water now flowed into various uncontrolled locations. These issues were also addressed as a part of these works allowing for hydraulic design services to be provided by BellMont.
The Owners Corporation and Strata Manager quickly moved to renew all such service lines and allow the project to be completed. Record rainfall levels since completion have not resulted in any water penetration since completion.