and developers of new town areas. The practise has developed an expertise in engineering solutions to a whole range of technical problems associated with building on both brown and green field sites. Residential Developers Robson Liddle Partnership offers a special service tailored to the needs of housing developers, particularly national house builders offering high quality and bespoke luxury apartments and houses. Services Include: Rapid appraisal of site viability prior to purchase; Appraisal of foundation requirements; Preparation of standard house type portfolios/ NHBC type approval; Design of substructure and super-structure, piled, raft, standard foundations and specialist foundations; Design of low rise and high rise/ mixed developments; Design of roads/ sewers and highway structures including bridges; Design of surface water storage tanks, lakes and lagoons. Historic Buildings/ Refurbishment/ Expert Witness Service From domestic structural survey and loss adjusters work to the design of major building refurbishments the practise has established a range of experience. Services Include: Structural surveys of existing buildings including preparation of defect schedules; Design and repair schemes for historic/ listed buildings; Design and detailing of structural requirements for major building conversions/ change of use; Design of underpinning systems and repairs; Design and repair scheme for pre-fabricated housing e.g. cornish units, woolaway houses etc; Expert witness work for lawyers, loss adjusters or housings developers. Commercial The practice is involved in a wide range of buildings for many branches of industry. These include shopping malls, nightclubs, warehousing, laboratories, research and development facilities, retail and mixed development schemes. Services Include Feasibility studies for refurbishment and new build; Feasibility studies for major projects including comparison of options; Detailed design of steel, concrete, composite and space structures; Detailed design of piled, raft or traditional foundations; Preparation of tender and contract documents; Service to contractors as part of design and build team; Design of roads/ sewers and major civil engineering works; Design of pumping stations, storage lagoons and balancing ponds. Geotechnical, Environmental and Urban Regeneration The practice employs a full range of staff with experience in geology, geotechnics and ground engineering. This includes experts involved with the regeneration of contaminated land and brown field sites. Services Includes Desk studies and pre-purchase land appraisa; Trial pitting, boreholes, rotary coring, dynamic probing etc.; Mining assessment; Gas monitoring; Contamination testing/ interpretation; Appraisal and determination of remediation for contaminated land; Slope stability analysis; Groundwater monitoring assessment; Full geotechnical investigation, testing and interpretative reporting with recommendations for the successful development of sites. Your project Sandbanks is a prestigious development of 24 luxury apartments arranged on four storeys with a basement (five storeys). The Sandbanks is situated on the shoreline of Poole Harbour, Dorset (southern England). It is a very significant and prominent site as it is only one of a few remaining sites along this stretch of coastline. It is believed that land prices here are about the fourth most expensive in the world with London, Tokyo and Manhattan leading the way. The development comprises of 3 blocks: 1 West Block Five storey concrete frame i.e. flat slabs, columns, podium slab and basement. 2 South Block As west block but the basement covers only about 35% of the floor area. 3 East Block This is a two storey traditional build and has not been analyzed on ESA-Prima Win. In both west and south blocks the third floor is a lightweight steel frame. The plan size of the south and west blocks is 51m x 51m arranged in an 'L' shape and has a total of 5 storeys, with the basement being 3.0m below ground level. The total mass of the two blocks is 7546 Tonnes. The site has a high ground water table and therefore positive and negative load cases had to be considered on the basement slab in both ultimate and serviceability conditions. A crack width check was carried out on the basement walls and slab (crack width 0.15mm) similar to BS8007 - Design of Concrete Structures for Retaining Aqueous Liquids. We purchased the nonlinearity module for this project to analyse the basement slab/ foundations. The slab had a negative (upwards) pressure and therefore we were inducing large tensile forces into piles when analysed linearly and therefore with the non linear module these forces were re-distributed to a point with large downward forces, hence tension piles are not used and will reduce the cost of foundations. As a novice with ESA-Prima Win and only being my second project using this software I have found it to be a long learning process. But with the assistance of 'CADS' and the 'help menu' I feel fairly confident to tackle further projects. I have been particularly impressed with the clarity of the printed output and the level of information given at the design stage. We also have 'links' to 'CADS' design software modules, the column designer 'link' is excellent whilst we still experience a few problems with the link to 'CADS' beam designer. We have also had limited success using the 'exclusive' option in the variable load cases. The modules we are already using have greatly improved our design productivity. One area that caused difficulty of input and analysis was the various steps in the floor slabs. We are now ready to invest in the module that would overcome this problem after we have seen the benefits of ESA-Prima Win. 69 SCIA User Contest Catalog
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