Rammed Earth Forms

Rammed earth australia use both straight edge formwork and flexi form when we are employed for the construction of rammed earth walls with each job s formwork customised to ensure quality and productivity.

Rammed earth forms. About 10 percent water is added in modern practice. Ironheaded rammers roller mounted forms pneumatic rammers and hydraulic mass production block presses have been used. Forms are used to hold the dirt mixture used in the process of ramming. There is nothing in the way.

They are removed after the wall has set to reveal a natural texture. The quality design allows the forms to be reused from wall to wall with simple construction and can be sold on after completion of your building ensuring that they will not go to waste. We have added two things. It is an ancient method that has been revived recently as a sustainable building method.

Once the earth is mixed however it needs to go straight into the walls before it hardens and dries. The whole idea behind forms for rammed earth is to get everything out of the way so the tampers can easily go where they are needed and have nothing to hit. While earthen mixtures can be mixed by hand it s more common to use a tractor or a tiller. Straight edge formwork is also available to purchase either in pre designed kit form or by custom order.

In addition to rammed earth integral color synthetic stucco was used for the exterior walls. The author describes his experiences in the 1940s building a rammed earth house an oddball decision at the time and how well the structure has served him since then. A dramatic roof overhang with douglas fir soffits and rammed earth walls frame the entrance. These are like the buckets.

Good compressive strength is characteristic of rammed earth. 1 a 3 strip of hdo attached to the inside edge of each end of the formfaces as stops to support the endboards. That is the beauty of the rew box. Rammed earth formwork can be simple or complex formwork is the basis of rammed earth.

Formwork allows a loose material to be placed directly into a wall with no intermediate steps apart from mixing. Learn more about how to build your own cob house join the online cob workshop classroom. The soil used must be high in sand and low in clay 70 percent and 30 percent being the usual proportions. Before mixing builders need to assemble a set of wooden forms.