09b0020Amnd6dwgs.pdf

Material Specification Size Notes Plantings see Appendix A, Table A.4 n/a plantings are site-specific planting soil sand 35 - 60% n/a USDA soil types loamy sand, sandy loam or loam (2.5' to 4' deep) silt 30 - 55% clay 0 - 12.5% mulch shredded hardwood aged 6 months, minimum; NO PINE OR WOOD CHIPS pea gravel diaphragm pea gravel: ASTM-D-448 pea gravel: NO. 8 OR NO. 9

(1/8" to 3/8") curtain drain ornamental stone: washed cobbles stone: 2" to 5" geotextile n/a PE TYPE I NONWOVEN underdrain gravel AASHTO M-43 NO. 57 or NO. 6 AGGREGATE

(3/8" to 3/4") underdrain piping F 758, Type PS 28 or AASHTO M-278 4" to 6" rigid schedule 40 PVC 3/8" perf.@ 6" on center, 4 holes per row; minimum of 3" of gravel over pipes;

or SDR35 not necessary underneath pipes. PIPE SHALL BE WRAPPED WITH

1/4" GALVANIZED HARDWARE CLOTH.

poured in place concrete MSHA Mix No. 3; 3500 psi @ 28 days, n/a on-site testing of poured in place concrete required: 28 day strength and (if required) normal weight, air-entrained; reinforcing slump test; refer to Specifications for additonal information to meet ASTM-615-60 sand AASHTO -M-6 or ASTM-C-33 0.02" to 0.04" Sand substitutions such as Diabase and Graystone (AASHTO) #10 are not acceptable. No calcium carbonated or dolomitic sand substitutions are acceptable. No "rock dust" can be used for sand.