The authority said the aim was to "raise the bar within the sector and act as a showcase for UK plc". Learning Legacy: London 2012 is billed as a blueprint for sustainable, safe and successful construction.
A representative said: "This is a collaborative approach between the ODA, contractors, professional institutes, government bodies and academia. It marks the first time a construction project in the UK has sought to capture intellectual capital on this scale."
Ten design themes with research and case studies cover sustainability, masterplanning, design, health and safety and supply-chain management.
The section on sustainability, for example, includes a 20-page case study on parklands and green infrastructure. The Olympic Park helped the ODA meet biodiversity and ecology targets by creating a species-rich habitat across 45ha.
The authority also relocated species such as bats, reused demolished materials and cleaned more than a million cubic metres of soil.
Companies could contribute to the website to make it a comprehensive online library, maintained chairman John Armitt.
"This embodies a new benchmark that has been created to deliver Europe's largest construction project to the ultimate deadline and within budget," he said.
"The scale and speed of the coordinated UK effort is unprecedented, and the knowledge gained will benefit the industry."
Culture secretary Jeremy Hunt added: "We want companies to win contracts off the back of this showcase for the best of British design, engineering and construction."