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Glossary

Armature: Wire, reinforcing steel and fibers which reinforce concrete. May be tied, sewn or welded.

Center Post: A post in the center of the reservoir which may be temporary or permanent.

Concrete Mortar: Plaster, mortar, concrete plaster (herein). Cure: Hardening process. A chemical reaction occurs as the mixture becomes hard. This process requires time and water. Twenty-eight moist days is the standard. The time period is effected by temperature. Warmth accelerates the process. The process stops if the concrete is dry; it will not start again.

Ferro Cement: ferrocement, ferrociment, ferrocemento, ferrocimento, ferrozement.

Hog Rings: "C" shape which is compressed with a tool to "O." Large rings are used in agriculture to pierce pig nostrils in order to lead them by the nose. Approximately two centimeters is the size used used to attach wire layers together. Usually found at wholesale upholstery supply stores.

Layer: Strata of wire or reinforcing steel. Metal lath: Also called expanded metal. It is used on one side of a vertical wall and the surface of a ceiling. It can be used on both sides of a vertical wall but is difficult to force plaster through. Thin gauge, painted metal lath is best for ferrocement work. Galvanized expanded metal is less convenient but holds wet plaster equally well as thin gauge lath. This material is very sharp where it has been cut.

Pneumatic hog ring gun cannot attach heavy gauge, galvanized expanded metal.

Plaster Proportions: 2 - 3 dry measures of sand to one measure of cement. Test to for 550 - 850 kgf/cm2 concrete plaster.

Approximate reinforcing steel diameters:

#2 = 0.60 centimeter = 2/8"
#3 = 0.95 centimeter = 3/8"
#4 = 1.25 centimeters
#5 = 1.60 centimeters

Reinforcing steel: reinforcing steel rod, re-bar, reinforcing steel bar (herein) Welded Wire: Manufactured in many wire sizes and spacing. Ten gauge wire creating fifteen centimeter squares is common for ferrocement. Ten gauge = 0.357 centimeters.

Wire Cloth: Galvanized welded wire available in various widths and grids. A grid of approximately 1.25 centimeters is used for vertical ferrocement walls, on one side. This grid allows easy penetration of plaster yet holds it well.

Premium quality welded wire is also available in this size. This wire is better steel and is not galvanized.

Sponge float: A trowel with a sponge surface. A wood float is a trowel made of wood.

Stanchion: A supporting post or pole.


Business Model:


Reservoir manual. Glossary. (edited versions on this website: Spanish, French, Portuguese and English)

Equipment: Plaster mixer, small truck, welding torches, roof support rafters, masonry tools, hoses, cutters, hog ring pliers, and benders.

Optional equipment: Arc welder, pneumatic hog ring gun, concrete pump nozzle (Though manual work --- mixer to cargo to application --- is the best method). A rented concrete pump facilitates lifting concrete to large roofs.


Felix Candela, photo section

Fundamental Business:

1) Construct homes, compost toilets, water reservoirs, aqueducts, tornado shelters, animal shelters, and work area shade. Fire safe structures. Earthquake safe homes. Tornado safe cellers.


ferrocement.com, ferrocement tank construction manual, Chapter 7

Add to business use and sales inventory (between jobs):

2) Prefabricate reservoir hatches (for water and septic)
3) Prefabricate various size septic reservoirs and tornado shelters (for sale and installation).
4) Prefabricate road drainage catch basins (for sale and installation).
5) Large plant containers (for hotels and parks).
6) Water for animals.
7) Expand roof brace inventory.


ferrocement.com, ferrocement house construction manual, Chapter 6