RSJ

Abbreviation for: Rolled Steel Joist.

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Rabbet
Radiant Heating
Radiation
Raft Foundation
Rafter
Rail
Railway Sleeper
Rainscreen
Rake
Rake Fascia
Rake Siding
Ranch
Ranging Rod
Ready Mixed Concrete
Rebar
Redline Prints
Reducer
Reflective Insulation
Register
Reglaze
Reinforced Concrete
Reinforcement Bar
Reject
Relief Valve
Relieving Arch
Remote
Render
Retaining Wall
Retention
Return
Reveal
RFI
Rib Band
RIBA
Ribbon
Ribbon Board
Ridge
Ridge Board
Ridge Rafter
Ridge Tile
Ridgepole
Rigging
Rigid Bed
Rigid Joint
Rim Joist
Ring Main
Rise
Riser
Riser & Panel
Road Base
Rock 1, 2, 3
Rock Faced
Roll
Roll Roofing
Romex
Roof Jack
Roof Joist
Roof Pitch
Roof Run
Roof Sheeting
Roof Span
Roof Truss
Roof Valley
Rough Cill
Rough Opening
Roughing-In
Royal Institute of British Architects (RIBA)
RSJ
Rubble
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