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In this guide, we’ll delve into essential specifications for rammed earth structures, ranging from R-value and U-value to foundation design, wall thickness, structural properties, joints, and more. R-value and U-value: Balancing Thermal Performance
The standard thickness of rammed earth walls is generally 300mm. In instances where niches and recesses are required for fireplaces, heater boxes etc. walls can be constructed to alternative thickness as required by the project. The minimum structural thickness for load-bearing earth wall is 250mm. And, for a non-load bearing walls is 200mm.
18 Αυγ 2023 · Overall heights of Rammed Earth Walls are commonly between 8’-24’ (2.44-7.32 m) with wall lengths of 12’-32’ (3.66-9.75 m). Each layer of rammed earth has a thickness between 2.5”-6” (6-15 cm).
11 Φεβ 2022 · The effective thickness of rammed earth solid wall is equal to the wall thickness, but for cavity walls it can be taken as (2 ÷ 3)(t 1 + t 2), as followed for the masonry walls in the absence of data on the structural behaviour of cavity rammed earth walls.
Compressive strength is a function of wall slenderness ratio (Sr), load eccentricity (e), material compressive strength ( fc), and wall section dimensions breadth (b) and thickness (t ). Slenderness ratio (Sr) is given by: Sr = hef /t where the effective height is a function of lateral restraints at the base and top of the wall as follows:
techniques available to stabilize or protect earth walls from water damage and shrinkage. This document aims to show that, with adequate control and protection, buildings built in rammed earth can achieve high standards. The document will set down definitive standards by which rammed earth buildings and building techniques can be judged.
The structural design of a rammed earth building encompasses (a) design of walls for compression, bending and shear (b) stability of the building against horizontal loads and (c) seismic safety. The design concepts for compression and bending, and stability are discussed in the following sections.
