This page offers a collection of technical drawings, longitudinal and cross-sections. Interesting to those who are curious about the technical details of the Cruquius engine and building.


Under the following thumbnail is a longitudinal section of the entire Cruquius building. The room on the left is the boiler room, in the middle the engine room, and on the right the water level of the Haarlemmermeer. Cruquius' pump buckets lift the water from the Haarlemmermeer polder level to the drainage canal (`Ringvaart´) which encircles the polder, 15-17 ft higher.

longitudinal section cruquius building

For another, top-down, view of the Cruquius building click the next thumbnail. You'll get a cross-section of the building. You can see the large engine in the middle of the circular building. The eight pumps are arranged around the engine building. The pump buckets are suspended by chains from the ends of the beams. The beam trunnion bearings rest on the massive circular wall of the engine house which is nearly 7 ft thick at the base. The drawing also gives you a clear picture of another detail, the 74 ft long buffer vessel in the boiler room.

cross-section cruquius building

Engine room

Those who want to study the Cruquius engine room in more detail can click the next thumbnails for a longitudinal section.

longitudinal section cruquius engine room

longitudinal section cruquius engine room


For those interested in pumps follows a very old drawing of Cruquius' bucket pumps.

cruquius bucket pump


This final item is a famous drawing of one of the most characteristic features of Cruquius, the beams. Piet van Putten managed to catch all the secrets of the complex beam in the following drawing (© copyright Piet van Putten 1991)!

cruquius beam