1. (Conventional Vibrated Concrete), in addition
to all necessary upstream and downstream
facing formwork using climbing formwork at
the upstream face and stepped formwork at
AL-WEHDAH DAM, IRBID, JORDAN
Strength against forces
the downstream face and for gallery
construction.
B
The very tight schedule for construction
demanded the use of special climbing
formwork and scaffolding – plus a 24-hour
BR Network Member, Marwan Alkurdi & Partners has been working on a
working cycle, as the RCC work was carried
technically demanding construction project for the new Al-Wehdah Dam.
out in a continuous 24-hour operation. In just
The site is in the northern part of the Hashemite Kingdom of Jordan on the
72 hours, we had completed the formwork
Yarmouk River which forms the border between Jordan and Syria in this location.
for the grouting gallery – approximately 1,170
liner meters of three meter high galleries of
The Al-Wehdah Dam is a roller-compacted widths varying from 1.5 m to 2.4 m. The
concrete (RCC) dam, designed for PT bar technology helped us gain time and
construction in two stages. The first stage enough strength to deal with the great forces
takes it to 70 m high to a crest elevation of induced by the RCC placement and the
116 m, and the second stage involves raising working equipment. l
it by 30 m to a crest elevation of
approximately 146 m. TEAM & TECHNOLOGY
The owner required that provisions should be OWNER The Ministry of Water and Irrigation,
Jordan Valley Authority
included to permit the raising of the dam at a
MAIN CONTRACTOR Ozaltin Construction
later stage. The dam was constructed using Trade & Industry Co.
grout-enriched RCC (GERCC) facing on both tower with three intakes at heights of 70 m, DESIGNER Montgomery Watson Harza (MWH)
the upstream and downstream surfaces. 80 m and 90 m – along with two concrete- CONCRETE WORKS Marwan Alkurdi &
A grout curtain cut-off was constructed at the encased 3 m diameter steel conduits and a Partners Co. Ltd.
upstream foot of the dam and the abutments discharge structure – was constructed in the (Nominated Subcontractor)
were extended to a depth sufficient to left abutment. TECHNOLOGY PT bar; climbing formwork
accommodate second stage construction. Our scope, as nominated subcontractor, BBR NETWORK MEMBER Marwan Alkurdi &
The multi-stage intake structure consisting of a consisted of the construction of all the CVC Partners Co. Ltd (Jordan)
TRIATHLON VIP ZONE, LONDON, UK
First for temporary PT structure
UK-based BBR Network Member, Structural Systems has
been busy assisting with preparations for the 2011 Hyde
Park’s Dextro Energy Triathlon ITU World Championship by
constructing a temporary structure which forms the Tata
Steel VIP zone.
The pavilion is constructed from ‘post-tensioned steel technology’
which is an innovative solution and believed to be the first of its kind
to be applied to such a temporary structure in the UK.
TEAM & TECHNOLOGY
Structural Systems has been working in collaboration with S2 – an
OWNER TATA Steel
Australian company wihich specializes in the design and construction
MAIN CONTRACTOR TATA Steel
of large span steel solutions. The structure comprises a post-
DESIGNER S-Squared Corporation Pty Ltd
tensioned structural steelwork hollow section latticed arch that is
pinned at each corner. l
BBR NETWORK MEMBER Structural Systems (UK) Ltd
78 CONNÆCT