Dimensions and Tolerances
9.1 The diameter of metallic coated wire shall conform to
Table 1 plus or minus the tolerances shown in Specifications
A 641, A 856/A 856 M, and A 809, as applicable.
9.2 The diameter of metallic-coated wire and stainless steel
wire used in the fabrication of fasteners shall conform to Table
7 plus or minus the tolerances shown in Specification A 764.
9.3 The minimum and nominal thickness of PVC coating
uniformly applied in a quality workmanlike manner shall be as
shown in Table 1.
9.4 Gabions shall be manufactured with an 8 by 10-mesh
type having a nominal mesh opening of 83 by 114 mm [3.25 by
4.5 in.]. Dimensions are measured at right angles to the center
axis of the opening ( D = 83 mm, see Fig. 4) and parallel to the
twist along the same axis.
9.5 Revet mattresses shall be manufactured witha6by
8-mesh type having a nominal mesh opening of 64 by 83 mm
[2.5 by 3.25 in.]. Dimensions are measured at right angles to
the center axis of the opening (D = 64 mm, see Fig. 4) and
parallel to the twist along the same axis.
9.6 The width, height, and length of the gabion as manu-
factured shall not differ more than 65 % from the ordered size
prior to filling. (Typical gabion sizes are shown in Tables 3 and
4).
9.7 The width and length of the revet mattress as manufac-
tured shall not differ more than 65 %, and the height shall not
differ more than 610 % from the ordered size prior to filling.
(Typical revet mattress sizes are shown in Tables 5 and 6).
9.8 Mesh Opening Tolerances?olerances on the hexago-
nal, double-twisted wire mesh opening shall not exceed 610 %
on the nominal dimension D values, as follows (see Fig. 4):
Mesh Type Nominal Dimension D Values
6 by 8 64 mm [2.50 in.]
8 by 10 83 mm [3.25 in

5th January,2010