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The Terra Aqua Reno mattress is a mattress shaped container
manufactured from heavily galvanized wire to form a flexible
and effective surface protection to defend against erosion
and scouring. The flexible wire mesh will accommodate
significant deformation without failure. The base and
sides of the Reno Mattress are made of a single sheet
of wire mesh (main panel). Partition panels (diaphragms)
are made of the same wire mesh as the main panel and are
attached to the base of the main panel dividing the Reno
Mattress into 3 foot cells. The lid is formed either by
a single sheet or in rolls of a specified length from
the same wire as is in the main panel.
The mesh shall be woven into a hexagonal pattern with
the joints formed by twisting each pair of wires through
three and a half turns. Because of this appearance, the
joints are often termed triple twisted. The mesh opening
shall be hexagonal in shape and uniform in size measuring
21/2 inches by 31/4 inches.
All wire used in the fabrication of the Reno Mattress
and in the lacing operations shall conform to Federal
Specification QQ-W-461H, Class 3, Finish 5, soft, and
have an average tensile strength in accordance with the
current ASTM A 641, Table 2, measured before fabrication
of the netting. The nominal diameter of the wire used
in the fabrication of the netting shall be 0.0866 inches
minimum, subject to diameter tolerance in accordance with
the current ASTM A 641, Table 3.
Tests shall be conducted on the wire before fabrication
on the Reno Mattress on a sample 12 inches long. Elongation
shall not be less than 12%.
All wire used in the fabrication and construction of the
gabions shall be galvanized according to ASTM A 641, Table
1. The minimum weight of the zinc coating shall be according
to the table following when tested in accordance with
ASTM A 90.
| Description |
Nominal
Diameter of Wire |
Minimum
Weight of Coating |
| Mesh and Lacing |
0.0866
inches (2.2mm) minimum |
0.70
ozs / sq ft |
| Selvedge |
0.106
inches (2.7mm) minimum |
0.80
ozs / sq ft |
Adhesion of the zinc coating to the wire shall be capable
of being wrapped in a close helix at a rate not exceeding
15 turns per minute around a cylindrical steel mandrel
having a diameter 3 times the nominal wire diameter being
tested. After the wrap test is completed, the wire shall
not exhibit any cracking or flaking of the zinc coating
to such an extent that any zinc can be removed by rubbing
with bare fingers.
All edges of the Reno Mattress including end panels and
the diaphragms, shall be mechanically connected in such
a way as to prevent unraveling of the mesh and to develop
the full strength of the mesh. The wire used for the selvedge
shall have a diameter greater than that of the wire used
to form the mesh.
Sufficient lacing and connecting wire shall be supplied
with the mattress for all wiring operations. The nominal
diameter of lacing wire shall be 0.0866 inches minimum.
According to engineering and design requirements the Reno
Mattress shall incorporate internal diaphragms to form
cells having a nominal length of three feet. The internal
diaphragms shall prevent rock migration within the reno mattress unit.
The Terra Aqua Heavy Duty Reno Mattress was designed specifically
to accommodate stone size of 3 to 6 inches (75 -105mm).
Only hard durable stone shall be used as mattress fill.
On channel slopes, the mattress shall be placed perpendicular
to the flow in the channel with the shorted dimensions
of the diaphragm going up and down the slope. On the channel
bed, the mattress shall be placed so the flow runs parallel
with the short dimension of the mattress compartment,
while the width of the mattress runs across the channel
bed. An approved corner closure tool shall be used to
adjoin adjacent mattresses to insure a tight, neat seam
and minimize mattress wire joint deformation.
* Terra Aqua Gabions reserves the right to amend these
specifications without notice.
Terra Aqua reno
mattress gabion material is manufactured according to
ASTM A975-97 guidelines for Double Twisted Hexagonal Wire
Mesh Gabions
| Reno
mattress unit size |
Capacity
cubic yard |
No.
of internal cells |
| 9'x6'x6" |
1 |
3 |
| 12'x6'x6" |
1.333 |
4 |
| 9'x6'x9" |
1.5 |
3 |
| 12'x6'x9" |
2 |
4 |
| 9'x6'x12" |
2 |
3 |
| 12'x6'x12" |
2.666 |
4 |
*Unit sizes are listed length x width
x depth.
*Tolerances- All reno
mattress dimensions shall be within a tolerance limit
of plus or minus 5% of the manufacturers stated dimensions.
*Standard reno
mattress units are available with unit or roll top lids.
| Reno
mattress lengths |
Reno mattress widths |
Reno mattress depths |
| 15', 18', 21', 24', 27', 30' |
3',
6' |
6",9",1" |
*Tolerances- All custom reno
mattress dimensions shall be within a tolerance limit
of plus or minus 5% of the manufacturers stated dimensions.
*Custom jumbo reno
mattress units are available with unit or roll top lids.
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