Timber iQ August - September 2019 // Issue:45 | Page 11

ASSOCIATIONS
the paint or treatment specifications regarding the
application.
ADDITIONAL LOADING
Additions, such as a cooking canopy that extracts smoke
or steam from the kitchen, for example, are usually
suspended from the roof trusses. In the case of additional
loading, it is important to ensure that the load is spread
across more than one truss. The load of the item should be
established before installation and the truss design
should be checked for any added loads. Be sure to use a
professional to install new items in roofs, such as
additional ceilings, bulkheads and chimneys.
Storage in roofs is not recommended unless the design
of the roof specifically makes provision for this.
LEGAL COMPLIANCE
An A19 Certificate will be issued on compliance, which is
required by the Local Authority before issuing an
occupation certificate. An A19 Certificate is required for the
structural system as stipulated in Regulation A19 of the
National Building Regulations.
The Code of Conduct as published in the Engineering
Profession Act 46 of 2000 states that ‘a registered person
must ensure that any work approved or certified by them
has been reviewed or inspected to the extent necessary to
confirm the correctness of the approval or certification’
and that ‘registered persons must only undertake work
which their education, training and experience have
rendered them competent to perform and is within their
category of registration’.
As per the Construction Regulation 2014 Occupational
Health and Safety Act of 1993, an owner of a structure must
ensure that:
• Inspections of the structure are carried out periodically
by a competent person to render the structure safe for
continued use;
• That the inspections contemplated above are carried
out at least once every six months for the first two years
and thereafter yearly;
• The structure is maintained in such a manner that it
remains safe for continued use; and
• The records of the inspections and maintenance are
kept and made available on request to an inspector.
The roof is a structurally important and very costly component
of a building and the average cost of a roof as a portion of the
final building can easily exceed 25%. The costs associated
with repair or replacement of the same roof structure will be
even more than this due to the additional work required to
establish structural integrity. Therefore, it is imperative that a
roof structure, on residential, commercial and industrial
buildings, is regularly inspected for any anomalies and that
remedial action is promptly and accordingly taken. A roof is a
lifetime investment and should last just as long.
While it is not compulsory or a statutory requirement to
do so, the institute recommends to both the public and
trade that an ITC-SA accredited member is enlisted in the
design, manufacture, erection and inspection of any
nail-plated timber roof structure; this provides an important
safeguard for quality and compliance in the industry and
further benefits the consumer through recourse in the event
of malpractice or non-compliance by an ITC-SA member.
Additional information is courtesy of MiTek Industries SA
and International Truss Systems.
www.timberiq.co.za
// AUG / SEPT 2019
9
NATURAL AND
DURABLE LUNAWOOD
Lunawood Thermowood is the ideal
foundation and the perfect material for an
ecological and healthy way of designing,
building and living. Our every product is an
authentic piece of sustainable Nordic forest
- processed only using heat and steam.
We offer a high performance choice for
various exterior and interior applications, where
endurance and dimensional stability are required.
DOWNLOAD THE FREE LUNAWOOD BIM LIBRARY
lunawood.com/bim-library/
Lunawood Agent in Southern Africa
WWW.NPP.CO.ZA
// AUGUST / SEPTEMBER 2019
LUNAWOOD.COM
9