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Big Block Retaining Wall Engineering

Engineered to Last!

Below are links to the mechanical drawings for the complete line of Big Block retaining wall blocks. You’ll see that we lead the way in retaining wall engineering.

Block Details

Block Type DWF DWG PDF
24” Bottom Block DWF DWG PDF
24” Middle Block DWF DWG PDF
24” Top Block DWF DWG PDF
42” Bottom Block DWF DWG PDF
42” Middle Block DWF DWG PDF
60” Bottom Block DWF DWG PDF
60” Middle Block DWF DWG PDF
72” Bottom Block DWF DWG PDF
24” Left Full Bottom Block DWF DWG PDF
24” Left Full Middle Block DWF DWG PDF
24” Left Full Top Block DWF DWG PDF
24” Right Full Bottom Block DWF DWG PDF
24” Right Full Middle Block DWF DWG PDF
24” Right Full Top Block DWF DWG PDF
24” Half Middle Block DWF DWG PDF
24” Half Top Block DWF DWG PDF
24” Half Left End Top Block DWF DWG PDF
24” Half Right End Top Block DWF DWG PDF
Reinforced Soil Retaining Wall Section PDF

Standard Gravity Design Charts

Gravity Wall Design Charts
4 Degree PDF
4 Degree Slope PDF
4 Degree 250 PDF
7 Degree PDF
7 Degree Slope PDF
7 Degree 250 PDF

The information contained in the charts below were compiled by Big Block, Inc. and represents the product use in the application illustrated to the best of our knowledge. The charts are for estimating purposes and conceptual reference only. Big Block accepts no liability for improper use or actual construction utilizing these charts. A qualified professional engineer with knowledge of actual site conditions and materials should perform specific wall design.

Notes:
1.Design calculations follow NCMA standards as outlined in Design Manual for Segmental Retaining Walls (2nd Ed).
2.Minimum safety factors are 1.5 for sliding, 1.5 for overturning and 2.0 for bearing capacity.
3.Global stability analysis has not been addressed in the charts.
4.Unit weight of soils is assumed to be 120 pcf.
5.The phi angle of the retained and foundation soil is assumed to be the same for chart calculations. See typical base block detail for leveling pad recommendations.
6.Wall installations shall follow Big Block guidelines plus any additional requirements of the engineer of record, site specifications and
pertinent documents.