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Reinforced aerated autoclaved concrete planks found on pitched roof of 1990s hospital building
A building constructed in the early 1990s has been found to contain reinforced aerated autoclaved concrete (RAAC) planks. This date is important since it is much later than the previously thought last significant use of RAAC in buildings in the UK and potentially affects the scope of buildings that could require screening for RAAC problems.
26 August 2022
CROSS Safety Report
Report ID: 1125
Region: CROSS-UK
Unstable concrete blocks
A reporter from a consulting firm was called to a site where the blocks in a retaining wall were found to be expanding and falling apart.
1 April 2010
CROSS Safety Report
Report ID: 174
Region: CROSS-UK
Gain in strength of mortar slower than concrete
A masonry wall settled and cracked after four courses of Engineering grade B bricks were substituted (not by the designer) for the original in-situ concrete padstones on cost and handling grounds.
1 April 2010
CROSS Safety Report
Report ID: 177
Region: CROSS-UK
Composition of new precast concrete blocks
A UK firm has raised concerns over a new large precast concrete block range which seems to use a wide range of secondary recycled aggregates in its mix, including some potentially hazardous waste.
1 July 2014
CROSS Safety Report
Report ID: 380
Region: CROSS-UK
Brick wall removed to leave precast panels unsupported
Precast concrete slabs were left unsupported after a supporting brick wall was removed during demolition works.
1 July 2014
CROSS Safety Report
Report ID: 384
Region: CROSS-UK
Failure of precast concrete 'L' shaped retaining wall
A recent incident occurred on a site, where a temporary precast retaining wall failed leading to a pile of clay approximately 3m high spilling through the wall.
1 July 2014
CROSS Safety Report
Report ID: 433
Region: CROSS-UK
Failure of cast-in lifting anchor on precast twin-wall
A precast reinforced concrete twin-wall panel was being lifted when one of the cast-in lifting anchors suffered a brittle failure.
1 January 2018
CROSS Safety Report
Report ID: 637
Region: CROSS-UK
Failure of cast-in lifting eye on L-shaped wall
During a routine lifting operation of a L-shaped wall unit, one of the legs on a cast-in lifting eye which was located on top of the unit pulled out of the concrete.
1 January 2018
CROSS Safety Report
Report ID: 638
Region: CROSS-UK
Partial failure of precast concrete tank unit on installation
Concerns are raised after the foot of a precast concrete unit failed during installation, making the unit unstable.
1 April 2017
CROSS Safety Report
Report ID: 626
Region: CROSS-UK
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