Arrow Storage Products Mountaineer Series Owner's Manual & Assembly Manual page 5

CONSTRUCTING A BASE...
Before you assemble your building, you must construct a base.
The length of your base, shown as "L" in the diagrams below, will depend on the length of your building. See below.
Nominal Size
10'x10' 3,0 m x 3,1 m
10'x15' 3,0 m x 4,6 m
10'x20' 3,0 m x 6,1 m
10'x25' 3,0 m x 7,5 m
10'x30' 3,0 m x 9,0 m
OPTION 1: Concrete Slab
The slab should be at least 4" (10,2 cm) thick. It must be level
and fl at to provide good support for the frame.
The following are the recommended materials for your base.
• 1 x 4's (19 mm x 89 mm) (will be removed once the concrete cures)
• Concrete • Sheet of 6 mil plastic
• We recommend for a proper strength concrete to use a mix of:
1 part cement • 3 parts pea sized gravel • 2 1/2 parts clean sand
Prepare the Site/Construct a Base
1. Dig a square, 6" (15,2 cm) deep into the ground (remove grass).
2. Fill up to 4" (10,2 cm) in the square with gravel and tamp fi rm.
3. Cover gravel with a sheet of 6 mil plastic.
4. Construct a wood frame using four planks of 1x4 (19 mm x 89 mm)
lumber.
5. Pour in concrete to fi ll in the hole and the frame giving a
total of 4" (10,2 cm) thick concrete. Be sure surface is level.
Allow 3 - 5 hours for construction and a week for curing time.
OPTION 2: Wood Platform
These are the recommended materials for your base:
• 2 x 4's (38 mm x 89 mm) Pressure Treated Lumber • 5/8" (15,5 mm) 4 x 8 (1220 mm x 2440 mm) Plywood-exterior grade
• 10 & 4 penny Galvanized Nails • Concrete Blocks (optional)
NOTE: Pressure Treated Lumber must not be used where it will make contact with your storage building. The properties of
Pressure Treated Lumber will cause accelerated corrosion. If Pressure Treated Lumber comes in contact with your storage
building your warranty will be voided.
The platform should be level and fl at (free of bumps, ridges etc.)
to provide good support for the building. The necessary materials
may be obtained from your local lumber yard.
To construct the base follow instructions and diagram.
Construct frame (using 10 penny galvanized nails)
Measure 16"/24" (40,6 cm/61,0 cm) sections to construct
inside frame (see diagram)
Secure plywood to frame (using 4 penny galvanized nails)
Allow 6 - 7 hours for construction.
# of Modules Length "L"
0 127 1/2"
1 185"
2 242 1/2"
3 300"
4 357 1/2"
For each additional module beyond the
lengths listed, increase the length of
323,9 cm
your base by 57 1/2" (146,1 cm).
469,9 cm
IMPORTANT: When deciding on a base
616,0 cm
for your building you must take into
762,0 cm
consideration use and permit requirements.
908,1 cm
A concrete base is best for most purposes,
but a wood platform may be suitable for light
use. Before beginning construction, check
local building codes regarding footings,
location and other requirements.
Note: Finished Slab dimensions, with lumber removed.
Platform/Slab will extend 2" (5 cm) beyond fl oor frame on
all four sides. Seal this 2" (5 cm) of wood with a roofi ng
cement (not included), or bevel concrete when pouring
for good water drainage.
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