St John Altarpiece (Memling) St John Altarpiece (Memling) The St John Altarpiece (sometimes the Triptych of the two Saints John or the Triptych of St John the Baptist and St John the Evangelist) is a large oil-on-oak hinged-triptych altarpiece completed around 1479 by the Early Netherlandish master painter Hans Memling. It was commissioned in the mid-1470s in Bruges for the Old St. John's Hospital ("Sint-Janshospitaal") during the building of a new apse. It is signed and dated 1479 on the original frame – its date of installation – and is today at the hospital in the Memling museum. The altarpiece consists of five paintings
Hinged expansion joint joints used in piping systems are restricted to pure angular rotation by its hinges. As a pair, hinged expansion joints will function together to absorb lateral deflection. Advantages of hinged expansion joints are that they are typically compact in size and structurally rigid. Hinged expansion joint A hinged expansion joint is a metallic assembly, that can rotate in a single plane, used to absorb changes resulting from piping thermal expansion or contraction. They include hinges, attached to the expansion joint ends with a pair of pins, which allow angular movement in a single plane, restrain the pressure thrust, and prevent