|
���
<br /> C�eos�d �'�r�eer�n9 �rts
<br /> These preengine�red tables provide an accurale astimab lor geogrid reinforcemerrt. To use Uie tables, follow Ihese simple steps:
<br /> �) Verify that the site condition of your retaining wall matches the lable being used.
<br /> 2) Verify that ihe soil condilions at your sile malch the description given.
<br /> 3) Choose the wall heighl needed for your site and read across to find the rwmber of grid layers,embedment�engUi and grid locations.
<br /> 4) Verify that excessive waler runoff, or a high water table, is not present.
<br /> Allan Bloek Geogrid System
<br /> DESIGN PARAMETERS lypfoal Seetion �T����
<br /> Faerors of Safety Assumed Weights cn=sraue
<br /> Sliding =1.5 Earth Backfill =110 Ibs/fl' (7764kg/m') ,. ,
<br /> Overturning =2.0 Filled weight o(AB =120 Ibs/ft' (1924kg/m'� gLOGK • � --(-
<br /> Grid Pullout =1.5 Allan Block =125 Ibs/fP (2004kg/m') �
<br /> Gria Rupwre =1.5 ORd,4dGE •,
<br /> General Soils '- • �`dQ�o
<br /> Proper drainage provided. Cohesion = 0 �� ���
<br /> Grid meets ASTM D 4595. 6earing Capacity 36� z 3,500 ps( (767,580Pn) '.� D3
<br /> 6earing Capacity 32� ? 3,000 ps( (743,640Pn) � , L D c7
<br /> Bearing Capaciry 27� z 2,500 psf (719,700Pn) —�-. ' ' ' _
<br /> Grid ��--ccrPnc:ec
<br /> t,ea�;_n¢enee
<br /> Long Term Ailowabte Design Strength (LTADS) z 1,000 Ibs/(t. (14,590 N/m)
<br /> i.e., Tensar UX1400, Miragrid ST, Stratagrid 300, Fonrac 35/20� 20. Sce relerence 7. 2, 3, 4,10. 27, 22
<br /> These charls should be used for eslimating grid quantilies for projects which match the site and soil descriptions provided,
<br /> and only for projects which use grid strengths of 10001bs/fl or higher. No proVision o� analysis (o�global stability.
<br /> Reference Guide
<br /> 1) ABENG.T7.7090 Testing ol A�lan Block Relaining System�University ol Wisconsin�i�atleville, Oclober 1990
<br /> 2) ABENG.T2.079� Shcar Slrengih I'roduct Testing�University ol Washing�on, Civil Engineering Depl., lan.1994
<br /> 3) ABENG.T3.0791 Gcogrid Pullo�n/Connection Sucnglh�Universi�y of Washington.Civil Engineering Depl., lan. 1994
<br /> �) ABENG.M.0580 Allan Ulock Engineering Manual, Erickwn Engineering, 1990
<br /> 5) ABENG.M7.0589 Allan Block Design Manual, May 1989
<br /> 6) ABENG.M2.0580 Allan Block Design Manua�, May 1990
<br /> 7) ABENG.M3.0883 Allan 81ock Design Manual, August 1993
<br /> 8) A6ENG.M1.0585 Allan 61ock Design Manual, May 1995
<br /> 9) ABENG.R1.0895 Allan Bbck Freeze Thaw Repon, lune 1995
<br /> 10) IC80 Report t 5087 Allan Block ICBO, Published May 1995
<br /> 71) ASTM C90-83 load Bcaring Concretc Masonry Uni�s
<br /> 12) ASTM C140-91 Sampling and Testing, Concmlc Masonry Unils
<br /> 13) UBC 27•1 Hollow and Solid Load Bearing Concre�e Masonry Units
<br /> 14) ASTM 7262 Evalualing Frecm Thaw Durabilily
<br /> 15) ACI 318-92 Builtling Code Requirements br Reinlorced Concrele
<br /> 16) FHWA•RD•88•0�3 Rein(orced Soil Svucwres Volume I. Design and Conswaion Guideiines. Nov. 1990
<br /> 17) FHWA-RD•89-0�3 Reinloreed Soil SvucWres Volume II. Summary of Research and System Informalion.
<br /> 18) lones, Colin 1fP, Lanh Reinforcement and Sail Swcwres, Bmierwonhs, London, England(1985)
<br /> 18) Miichell. 1 K, el. al. "Reinlorcemem ol Earth Slopes and Embankmenls," NCHRP Repon 290, Transponation Research Board,
<br /> Washington, DC(1987)
<br /> 20) Task Force 27, Io-Silu�il Imoroyemenl Techniaut5, "Design Guidelirms lor Use ul Extensible Rcinlorcemenls(or Mechanically SlabilizM
<br /> Eanh Walls in Permanent Applications," loirn Comminee uf AASHTO�AGGARTBA, AASHTO. Washington, DC (1990)
<br /> 21) Terzaghi, H, and Peck, R B, Soil Mechanics in Enpinrsrinfl Prac�ice, lohn Wiley and Sons. Inc., New York, NY (1967)
<br /> 22) GRI S�andard Praciice. GC�4 : Determinaiion of Long�Term Design Streng�h ol Geogrids, Geosyntheiic Research Ins�itute, Dre�el
<br /> Univcrsity, Philadelphia, PA(1991)
<br /> 27
<br />
|