Page 6 - A4 Post tensioning bar 1030

Macalloy Post Tensioning System

Stress corrosion testing has also Welding thread, when cast into concrete,
been conducted in accordance Macalloy 1030 and Macalloy or grouted into a preformed hole,
with pr EN 10138-4: 2005-2009 and S1030 must not be welded, complies with requirements for a
satisfies the requirements in full. subjected to high local heating Class 2 deformed bar. This is as per
or splashed with weld metal. 8110-1:1997 Section 3.12.8.
Under normal circumstances,
Macalloy 1030 is not susceptible Short, fully threaded bars can
to stress corrosion. Macalloy 1030 Threads be used satisfactorily for short
is, of course, subject to surface tendons and bolts, as loss of load
corrosion when exposed to A coarse thread is cold rolled due to ‘take up’ in the threads on
moisture and deep corrosion pitting directly on to the bar. Bars can be transfer of load, is minimised by
is harmful. Further data is available end threaded or fully threaded. the controlled limits on clearance,
from the Technical Department. between internal and external
The bond value of the coarse threads.

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KL8 Footbridge, near Poznan, Poland
Architect - Bartołomiej Grotte,
Contractor - Skanska / Intercor,
Engineer - Transprojekt Warszawa, prof. Henryk Zobel
Wind Turbines, Uljabuouda, Sweden
Foundation Sub-Contractor – Peikko Sverige
Turbine Manufacturer – Dynawind AB, Sweden
Client – Skellefteå Kraft AB

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