Wednesday 16 March 2011
Block on flat retaining wall (PIC 2)
215mm reatining wall with 440mm returns. The wall was built to retain ground to create a hard stand. it was built using standard dense concrete blocks with 5:1 sand and cement mix with feb additive. it was tied into the existing structures using fir fix rails. It was built in stretcher bond with 440mm returns either end and had a return of 900mm in the centre of the wall as the client requested the wall was to be built technically in two halves. It had holes cut at ground level every 1340mm to allow for drainage and was backfilled with 10mm stone around the weep holes. work conditions were intially hazardous due to poor access and ground conditions. These were reported to the forman and risk assessments and method statements were ammended accordingly.Security also was an unforseen issue however heras fencing and lockable boxes were provided. The footings for this project needed to be dug by hand and mixed on site using a belle petrol mixer. All footings were poured and leveled by hand, and the setting out of the blockwork was done by mself onsite in accordance with the method statement. Work areas were protected by sheeting and temporary exclusion zones set up to minimise entering unecessary areas of site. All waste was disposed of in accordance with the companies policies in suitable skips.
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