To cover a space with a

In architecture, a vault is a self-supporting arched form, usually of stone or brick, serving to cover a space with a ceiling or roof. As in building an arch, a temporary support is needed while rings of voussoirs are constructed and the rings placed in position. Until the topmost voussoir, the keystone, is positioned, the vault is not self-supporting. Where timber is easily obtained, this temporary support is provided by centering consisting of a framed truss with a semicircular or segmental head, which supports the voussoirs until the ring of the whole arch is completed.

Peter E. \"Sneaky Pete\" Kleinow was an American country-rock musician and animator. He was a member of the band the Flying Burrito Brothers, and worked extensively as a session musician, playing pedal steel guitar for Joan Baez, Jackson Browne, The Byrds, Leonard Cohen, Joe Cocker, Rita Coolidge, Eagles, The Everly Brothers, Ringo Starr, John Lennon, The Steve Miller Band, Joni Mitchell, The Rolling Stones, Stevie Wonder, Spencer Davis, Little Richard, Linda Ronstadt, Jimmie Spheeris and many others. He is a member of the Steel Guitar Hall of Fame.