3
Structural design and elements (03 1xxxx)
3.1
Works (03 11xxx)
03 11001
half-timbered building
timber framed building (01) in which the spaces (01) between the exposed timber (01) components (01) are filled with another material (01)
3.2
Parts (03 12xxx)
03 12001
slender beam
beam (01) with a slenderness ratio (01) exceeding a prescribed limit
03 12002
rib
continuous projection at right angles to a flange (01) or slab (01), increasing resistance to bending
03 12003
bearing surface
surface that transmits direct compressive load (01) from one structural member (01) to another
03 12004
panel
distinct portion of a building element (01) surrounded by a frame (01) or other components (01) of the same type
03 12005
flat
rolled-steel section (01) of rectangular cross-section, whose thickness (01) exceeds one-tenth of its width (01)
03 12006
strand
assembly of wires or fibres of considerable length (01) spun helically in one or more layers around a core (01)
03 12007
hollow pot floor
in-situ reinforced concrete (09 33032) ribbed floor (01), spanning in one or more directions, where voids (03 28003) between the ribs (03 12002) are formed by cellular blocks (01) made of fired clay (BS EN 12670) or lightweight concrete (BS EN 206)
03 12008
filler joist floor
03 12009
coffer slab
concrete slab (01) spanning in two directions and containing recesses on its underside
03 12010
waffle slab
coffer slab (03 12009) with recesses that are curved on plan (BS ISO 10209-1)
03 12011
hammer beam
short horizontal structural member (01) at the foot of a principal rafter (03 12018)
03 12012
straining beam
upper horizontal structural member (01) of a queen post truss (03 12047) connecting the heads of the queen posts (03 12035)
03 12013
trimmer
03 12014
flitch beam
composite beam (01) consisting of one or more pieces of timber (01) of rectangular cross-section and one or more steel plates (01) bolted together parallel to the major axis
03 12015
common rafter
timber (01) rafter (01), not forming part of a truss (01), that extends between eaves (01) and ridge board (06 32033)
NOTE Sometimes given intermediate support by purlins (01).
03 12016
jack rafter
03 12017
hip rafter
03 12018
principal rafter
inclined structural member (01) of a roof truss (01), in compression (01), connected to a tie beam (03 12030) and posts (01) and to which struts (01) are connected
03 12019
valley rafter
structural member (01) in the line of a valley (01)
03 12020
trimming rafter
rafter (01) of larger cross-section but the same length (01) as and parallel to common rafter (03 12015)
03 12021
trimmed rafter
rafter (01) of the same cross-section as a common rafter (03 12015) supported by a trimmer (03 12013)
03 12022
trussed purlin
purlin (01) in the form of a lattice girder (01)
03 12023
furring piece
03 12024
curb rafter
03 12025
heel strap
u-shaped, steel strap placed over the top of a principal rafter (03 12018) and bolted into the tie beam (03 12030) near the wall plate (01)
03 12026
sprocket piece
short, tapered piece of timber (01) fixed to the lower end of a common rafter (03 12015) to reduce the slope (01) of a roof (01) at the eaves (01)
03 12027
dead shore
vertical shore (01)
03 12028
flying shore
03 12029
raking shore
inclined shore (01) that provides lateral support
03 12030
tie beam
structural member (01) connected to, and providing lateral restraint for, structural members (01) that are otherwise unrestrained
03 12031
straining sill
structural member (01) on the upper surface of a tie beam (03 12030), between posts (01) to take thrust from struts (01)
03 12032
tie rod
03 12033
string
horizontal tie (01) in a lattice truss (03 12048)
03 12034
king post
central post (01) in a king post truss (03 12046)
03 12035
queen post
one of a pair of posts (01) extending from the point of intersection of principal rafters (03 12018) and straining beam (03 12012) to the tie beam (03 12030)
03 12036
king rod
03 12037
collar
horizontal structural member (01) tying a pair of principal rafters (03 12018) in opposite slopes (01)
cf. collar (03 44029)
03 12038
column head
enlargement at the top of a column (01)
03 12040
blockwork
03 12042
bowstring truss
roof truss (01) in the form of a simple arch (01) tied between its springings (01) and with bracing (01) between the arch (01) and the tie (01)
03 12043
Belfast truss
bowstring truss (03 12042) with lattice bracing (01)
03 12044
half truss
roof truss (01) whose shape (11 27004) is half a normal roof truss (01), partly supported by a main roof truss (01) and at an angle, usually 90 degrees to it on plan (BS ISO 10209-1)
03 12045
hammer beam truss
03 12046
king post truss
pitched roof truss (01) that has a single main post (01)
03 12047
queen post truss
pitched roof truss (01) having two queen posts (03 12035)
03 12048
lattice truss
lattice girder (01) for a flat roof (01)
03 12049
wind girder
girder (01) with its major axis horizontal to resist wind action (01)
03 12050
friction grip connection
act or state of being joined with a high strength friction grip
bolt (03 12051)
03 12051
high strength friction grip bolt
high tensile steel bolt (01), used with a high strength nut (06 72092) and hardened steel washer (06 72096), tightened to a predetermined shank tension (03 15002) so the clamping effect thus provided will transfer loads (01) in connected structural members (01) by friction
03 12052
shear connector
03 12053
stud
small projection from the face of a component (01) to facilitate connection with another component