305 322
305
MASONS SUPPLY COMPANY
Oregon (800) 537-3407 ♦ Washington (800) 537-6216
Clackamas | Eugene | West Eugene | Hillsboro | Medford | Portland | Salem | Wilsonville | Ridgefield | Seattle | Tacoma | Woodinville
M A S C O . N E T
GENERAL & TECH INFO
GLOSSARY OF TERMINOLOGY
LINER
Any sheet or layer of material attached directly
to the inside face of the forms to improve
surface quality, alter the texture, or to imprint
specific architectural patterns on the finished
concrete.
LIVE LOAD
The total weight of workers, equipment, buggies,
vibrators and other loads that will exist and move
about due to the method of placement, leveling
and screeding of the concrete pour.
LOAD EQUALIZERS
A system of equalizing sheaves designed to
distribute the load equally to each form lift point
when multiple-leg slings are used to lift a form.
MODULAR FORMWORK
Prefabricated all-metal or metal-supported-
plywood systems in standard sizes with an
integral provision for tie and connecting
hardware.
MONOLITHIC
Concrete placement technique in which the
slab, the beams, the columns, and the walls or
any combination of the above elements
are poured at the same time.
MUDSILL
A plank, or concrete slab, on the ground, to
provide a level surface and support to concrete
forms.
MULTI-LIFT
The vertical stacking of forms in tiers for any
height wall. A wall requiring more than one row
of forms is generally referred to as multilift.
NAILER
Strip of wood or other material attached
to or set in concrete or attached to steel to
facilitate making nailed connections.
OFFSET
A displacement or abrupt change in line or the
distance between two parallel lines; such as a
change in wall thickness which will create
a vertical offset.
ONE-SIDED
A wall formwork system having only one forming
FORMWORK
side, requiring special provisions for tieing and
support. Commonly required when placing
concrete against sheet pile, slurry walls, soldier
beam embankments, and existing concrete or
concrete block walls.
PANEL
A section of form sheathing constructed from
boards, plywood, metalsheets, etc., that
can be erected and stripped as a unit. Panels
can be built on jobsite or prefabricated factory
built.
PAN-JOIST
A light slab with ribs normally 24 to 36 inches
on center acting as beams. The joists or ribs run
at right angles to primary beams or girders.
PARAPET
Part of a wall that extends above the roof level.
PENCIL ROD
Metal rod (wire), usually about ¼" diameter,
used in conjunction with special bearing clamps
to perform as a wall form tie.
PENETRATION
Any concrete embedment device that must
pass through the form face (such as anchor
bolts, rebar, or dowel rods).
PERMANENT FORM
Any form that remains in place after the
concrete has developed its design strength. The
form may or may not become an integral part
of the structure.
PILASTER
Column built with a wall, usually projecting
beyond the wall face.
PLATE
A flat horizontal member such as a 2 x 4 placed
on the footing for leveling and upon which the
forms are set, sometimes referred to as a “shoe.”
PLUMB
Vertical or the act of making vertical.
POST-TENSIONED
Reinforced concrete in which, after the
CONCRETE
concrete has set and sufficiently hardened, the
desirable distribution of stress is achieved by post
tensioning steel tendons, bars or wires.
PRECAST CONCRETE
Concrete units (such as beams, joists, deck
panels, or wall panels) cast elsewhere than
its final position and then set in place.
PRESTRESSED
A system for utilizing the compressive strength of
CONCRETE
concrete by producing required compressive
stresses with highly stressed tension rods, tendons
or wires.
REBAR
Abbreviation for “Reinforcing Bar.”
RETAINING WALL
A wall, which is designed to resist horizontal
loads such as those imposed by soil or water.
RIBS
Parallel structural members backing sheathing in
a prefabricated form. Same as crossmembers.
RIGGING
Suspension components, such as chains,
shackles, connecting links and eye hooks
used to suspend formwork gangs or components
from a crane or similar lifting device.
RUSTIFICATION
A groove in the concrete formed by securing a
strip to the face of the formwork. Also referred to
as a “feature strip.”
SAFETY FACTOR
See Factor of Safety.
SCAB
A small piece of wood fastened to two formwork
members to secure a butt joint.
SCAFFOLD BRACKET
A premanufactured cantilevered bracket
designed to attach to formwork gangs and
support scaffold planks that are used for a work
platform when placing and vibrating concrete.
SCAFFOLDING
An elevated platform supporting workers, tools,
and materials, either attached to wall forms or
free standing.
SCREED
The tool used to control the top surface
elevation of freshly placed concrete.
SHEATHING
The material forming the contact face of forms,
also called lagging or sheeting.
SHE-BOLT
The outer unit of a three-piece wall tie that
contains female threads to engage the
external threaded inner unit (rod). SHIM
Thin pieces of material used to bring abutting
members to an even, level bearing.
SIDERAIL
Perimeter frame member of prefab form panel
which is perpendicular to crossmembers.
SILL
Horizontal bearing member as a plate.
See Plate.
SKIN PLATE
The steel form face of an all-steel form brace.