Timbrel Vaulting in South Africa by Peter Rich Architects

Mapungubwe 12 Reader Sergio Carratalá informs us of yet another recent example of timbrel vaulting – a medieval building method that we described extensively in “Tiles as a substitute for steel“.

It concerns the Mapungubwe Interpretation Centre in South Africa, designed by Peter Rich Architects from Johannesburg. The project won the World Building Award at the World Architecture Festival (WAF) held in Barcelona last month.

The Mapungubwe Interpretation Centre, which is built to house artifacts from the region’s prehistory, was constructed using local materials and using the skills and labour of local people. Unemployed South Africans were trained in the manufacture of earth tiles and in building the
timbrel vaults.

Mapungubwe 17 Timbrel vaulting (or “Catalan vaulting”) is being rediscovered as an ecological building technique because it saves large amounts of building materials and thus embodied energy. This also makes it a cheap building method, at least in regions were hand labour is affordable. Via Sergio Carratalá.

More pictures below (courtesy of Peter Rich and the WAF).

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Windmills and Wind Motors – How to Build and Run Them (1910)

windmills DIY

“I have endeavoured in the following pages not only to interest the practical amateur in a branch of mechanics unfortunately much neglected, but also to present a series of practical original designs that should prove useful to every reader from the youngest to the most advanced.”

Chapter 1 : windmill evolution
Chapter 2 : a small working model windmill
Chapter 3 : a small American type windmill
Chapter 4 : a small working windmill
Chapter 5 : a practical working windmill
Chapter 6 : production of electricity by wind power

Windmills and wind motors – how to build and run them (1910).

Related:

Online Multimedia Museum of Machine Motion

steam turbine

Reader Mathew Lippincott (check out his mutoscope) points us to Kinematic Models for design (KMODDL), an open access, multimedia resource for learning & teaching about kinematics and the history & theory of machines.

The core of this wonderful museum is the Reuleaux collection of mechanisms and machines, a set of 19th century models built to demonstrate the elements of machine motion (more collections here). Also of interest are the tutorials and this extensive list of online references.

KMODDL also has 3D-printable models (see the multimedia section) and some of these have stereolithography files. They can be viewed with Meshlab. Thank you, Mathew!

Floating Citadels, Powered by Wind and Water Mills

floating citadels

This engraving, published in 1798, shows the gigantic St. Malo raft, designed in 1791 during the French Revolution. The engraving informs us that this extraordinary structure was 600 feet long by 300 broad, mounts 500 pieces of cannon, 36 and 48-pounders, and is to convey 15,000 troops for the invasion of England. In the midst is a bomb-proof, metal-sheathed citadel.

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507 Mechanical Movements (1908)

507 mechanical movements

507 Mechanical Movements, embracing dynamics, hydraulics, hydrostatics, pneumatics, steam engines, mill and other gearing, presses, horology, and miscellaneous machinery, and including many movements never before published, and several which have only recently come into use“. Henry T. Brown, 1908. Via Doug Berch.

Plastics in the World of Tomorrow – Plastics in the World of Today

plasticsPlastics in the world of tomorrow (1944).
Plastics in the world of today (October 2009).