1. API (American Petroleum Institute) (2014). API RP 2A-WSD: API recommended practice for planning, designing and constructing fixed offshore platforms – working stress design, 32nd edn. Washington, DC, USA: American Petroleum Institute.
2. Atkins (2010). Network electrification – new OLE foundation feasibility, Report No. GEN07, Recommendations for OLE foundations. Atkins.
3. BH (Buro Happold Engineering) (2015a). NR-working groups for electrification standards typical loading for GW series 1 TTC, 033622-BH (006/010), https://doi.org/10.5258/SOTON/D1117. Bath, UK: Buro Happold Engineering.
4. BH (2015b). Series 1 standard STC and TTC rev02, 033677, https://doi.org/10.5258/SOTON/D1117. Bath, UK: Buro Happold Engineering.
5. BH (2015c). Series 1 critical loading states for XL-TTC structures, 003677-BHP-DN-XL-TTC-001, https://doi.org/10.5258/SOTON/D1117. Bath, UK: Buro Happold Engineering.