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EXAMPLE A EXAMPLE B EXAMPLE C - a - i. C. t.7f• C.i i.yf• C.#.34" r . RSpd ♦ . 1tspA T . "fid H. L1� __T}H f /�. E /�. ,./�� etiu iron 36 - faK tib WIL •. - '., ♦.it ,., t3lpel NOTES: 1. Sample designs to be used for preliminary design only when actual Boit, geometry and surcharge conditions are conservatively represented by the assumptions shwa. in ail s(tuatians, the final as -built design should be pertormed by a qualified engineer using actual design conditions for the proposed site. 2 MINIMUM FACTORS OF SAFETY.. t S for internal reinforcement pullout and tensile overstress. 1.5 for external sliding and ZO for external overturning and bearing capacity. No provision or analysis Included for global stability. 3. Sample designs require adequate drainage provisions for both the reinforced wall fill and retained backfill. CONSTRUCTION . 'Stonewall' is engineered to be a simple to ' construct wall that requires no mortar or footin s.. , - The easy to handle 45 lb. units are light in the hand, but heavy in the wall. Through advanced hollow - core design, the engineer is given the tools to -.. design walls up to 12 foot and higher, while the installer is given a unit which is a joy to work with. " As they are stacked, the mortarless units . automatically set back 314' per vertical foot:. Consistent and accurate construction is assured by,'- use y,:use of the non -deteriorating pins. IMSE: —ils four foot or less: 4' deep, overfour" foot: 6'- deep, of 95% compacted granular fill. Level base side to side and front to back. The number of ` :,- courses below finished grade will Vary depending . on height, soil and application. Allow 18' minimum base depth. F. - BUILDING THE WALL: 1. First course is the most important. Level block in all directions using a string to guide the placement:,: 2. Backfill and compact with granular well -draining fill after each 8' course. Tamp the fill into the cores, into the voids between the block, and IT behind each unit. Clay and organic topsoil are not recommended. A 3/4' - 0 gravel is recommended. 3. Install alignment pins in holes. Clear the holes first with a punch if necessary. 4. Attach geogrid near the face of the block and pull the geogrid taut behind the units (see geogrid chart for placement requirements). 5. Be in next course bv straddlingg_two lower units and staggering the vertical joints. -Place the trough over the pins and pull the unit forward establishing ' the 1/2' setback. NOTE: Curved and serpentine walls: • Base must be level • Convex: Leave 1' gap between units -at first course " • Concave: Walls require an overlap of edges at the .dmftt course ' age systems should be considered for all wall ns. Tiered wall design can create greater stresses on the wall than equal height single tier. Tiered wall design must be carefully considered. g\m,ls� OR% CONVEX CONCAVE GENERAL GUIDELINES • Walls under four foot, without excessive loads, slopes but good soil, generally require no geogrid tieback. Wails over four foot, generally require an engineered geogrid tieback based on site conditions. • Soil conditions, site geometry and surcharge on the retained earth are the major factors affecting design. • Walls under 4 ft. require four inches of base. Those over 4 it. require 6 inches of base. Allow 18' minimum base depth. • Bury one unit below grade for every six feet of wall height. Walls three feet and under, bury one half of a unit. • The face area of each block is 2/3 of a square foot. To estimate the number of blocks needed, multiply the actual square footage of the wall by 1.62. PRODUCT BENEFITS 1. 'Light in the hand', hollow core design keeps the unit a light 45 lbs. 2. Less fatigue at 45 lbs. per unit means injury risk is decreased and output is increased. 3. `Heavy in the wall% hollow core design allows a greater per cubic foot weight in the wall than semi hollow units. 4. Trough alignment design allows a continual connection to the pins, benefiting the installer and reassuring the designer. 5. Friction Lock Pin (Patent Pending) means no wasted expense on through unit pins. The 2 1/4' long 'Super Tough Nylon' pin is a mighty midget. NOTEII These procedures are not to be construed as construction detail. Soil and application variations effect engineering detail of the wall. Consult local engineer for details.