- counterpaddle
- counterpoise
- countersink2
- countersunk bolt
- countervailling
- counterweight cable
- counterweight cantilever
- counterweight traveler
- counterweighted window
- country
- country house
- country type
- country-side
- coupled columns
- coupled roof
- coupler
- coupling
- coupling bolt
- coupling box
- courier
- coursed masonry
- courtyard
- cove
- cove ceiling
- coved vault
- covenant
- cover
- cover page
- cover-joint
- coverage
- covered electrode
- covered way
- covering capacity
- covering slab
- coverstrip
- cowl
- cown mold
- crack
- crack length
- crack opening
- crack pattern
- crack resistance
- crack stress
- crack tip
- crack width
- cracked condition
- cracking moment
- cracking resistance
- cracking stress
- crackled glass
- crackling varnish
- cradle
- cradle vault
- cradling
- craking tar
- cram
- crane barge
- crane beam
- crane bucket
- crane chain
- crane excavator
- crane girder
- crane leg
- crane pulley
- crane runway
- crane span
- crane track
- crane trolley
- crank circle
- crank radius
- crankscrew
- crankshaft
- crash landing
- crawl
- crawl space
- crawler crane
- create directory
- create envelope
- create style
- create TOC
- creating documents
- cowardly
- coy
- coyote hole
- CPU clock
- crab
- crack control
- crack pouring
- crack restraint
- crack scaling
- cracked section
- cradle block
- cradle conveyor
- cradle machine
- craft
- cramp
- crane
- crane bridge
- crane hook
- crane load