crown plate

crown plate

1. Same as bolster.
2. A longitudinal structural member at the apex of a roof that supports the upper ends of the rafters.
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References in periodicals archive ?
The ascending canals turn horizontally when they reach the crown plate and run in the basal parts of the growth lamellae, giving off numerous very fine dentine tubules.
There is a distinctive margin between the ledges and the main crown, which corresponds to the most lateral ridges of the crown plate.
WRU chairman David Pickering and president Dennis Gethin travelled from Cardiff to the spinal injuries unit at Southport Hospital, as well as the Triple Crown plate and a shield for the Under-20s World Cup.
The sight of Manon and Gwenan Gravell, daughters of the late, great Ray, accompanying 50-cap Ian Gough out onto the field with the Triple Crown plate warmed the heart.
The scales from the Tahula Beds in our material show traceable transitions from typical cruciform head (or rostral) scales, through scales with a flat and smooth crown plate, into elongate posteriorly ridged trunk and pinnal scales.
In one type the upper surface of the scale crown is smooth and flat, and lateral ridges occur as fine longitudinal ridgelets beneath the crown plate.
The rounded crown plate performed the best under submerged inlet conditions; the square edge performed the worst.
Tenders are invited for Repair of boiler skin casing at crown plate seal plate and scalloped bar during Unit No.
Trunk scales with rhomboidal smooth and flat crown plate, or crown surface is ridged; scales carry up to four spines posterolaterally of crown and one medial spine beneath posterior crown apex; neck as shallow groove; anterior spur-like projection present in posterior trunk scales and in those positioned posteriorly on fins.
Tenders are invited for repair of boiler skin casing at crown plate , seal plate and scalloped bar during unit 3 aoh
II BM Unit I Boiler Attending patch-up works in the air ingress area of the pent house and repairing the crown plates / seal plates around the intersection of various headers in pent house during 2016-17 overhaul Note: Prospective bidders may get the specification FREE OF COST by down loading from TANGEDCO Website
II BM Unit V Repairing of worn-out skin casing and crown plates around the intersection of radiant SH and re-heater tube area at pent house, arresting flue gas leak in extended side steam cooled wall outlet header left and right area, super heater upper side wall inlet header left and right area during 2015-16 annual overhaul