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<td>Under-drain Piping</td>
 
<td>Under-drain Piping</td>
 
<td>ASTM D-1785 or AASHTO M-278</td>
 
<td>ASTM D-1785 or AASHTO M-278</td>
<td>8” rigid schedule 40 PVC</td>
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<td>minimum 4” rigid schedule 40 PVC</td>
<td>3/8” perf. @ 6” on center, 4 holes per row; minimum of 3” of gravel over pipes; not necessary underneath pipes</td>  
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<td>3/8” perf. @ 6” on center, 4 holes per row; minimum of 3” washed #57 stone over pipes; not necessary underneath pipes</td>  
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<td>Concrete (Castin-place)</td>
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</table>
<td>See local Standards and Specs. f’c = 3,500 psi, normal weight, airentrained; re-enforcing to meet ASTM 615-60</td>
 
<td>n/a</td>
 
<td>on-site testing of poured-inplace concrete required: 28 day strength and slump test; all concrete design (cast-in-place or precast) not using previously approved State or local standards requires design drawings sealed and approved by a licensed professional structural engineer.</td>
 
</tr>
 
<tr>
 
<td>Concrete (precast)</td>
 
<td>per pre-cast manufacturer</td>
 
<td>n/a</td>
 
<td>SEE ABOVE NOTE</td>
 
</tr>
 
<tr>
 
<td>non-rebar steel</td>
 
<td>ASTM A-36</td>
 
<td>n/a</td>
 
<td>structural steel to be hotdipped galvanized ASTM A-123</td>
 
</tr>
 
  
</table>
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<noinclude>
<noinclude>[[category:table]]</noinclude>
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[[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Sand filter, iron enhanced sand filter, media filter]]
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[[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Media, compost, and media amendments]]
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[[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Swales]]
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</noinclude>

Latest revision as of 16:49, 4 August 2022

This table shows sand material specifications.
Link to this table

Parameter specification Size Notes
Sand clean AASHTO M-6 or ASTM C-33 concrete sand 0.02” to 0.04” Sand substitutions such as Diabase and Graystone #10 are not acceptable. No calcium carbonated or dolomitic sand substitutions are acceptable. Rock dust cannot be substituted for sand.
Underdrain Gravel AASHTO M-43 1.5” to 3.5”
Geotextile Fabric (if required)

ASTM D-4833 (puncture strength - 125 lb.) ASTM D-1117 (Mullen Burst Strength - 400 psi)

ASTM D-4632 (Tensile Strength - 300 lb.)
0.08” thick equivalent opening size of #80 sieve Must maintain 125 gpm per sq. ft. flow rate. Note: a 4” pea gravel layer may be substituted for geotextiles meant to separate sand filter layers.
Impermeable Liner (if required)

ASTM D-4833 (thickness) ASTM D-412 (tensile strength 1,100 lb., elongation 200%) ASTM D-624 (Tear resistance - 150 lb./in)

ASTM D-471 (water adsorption: +8 to -2% mass)
30 mil thickness Liner to be ultraviolet resistant. A geotextile fabric should be used to protect the liner from puncture.
Under-drain Piping ASTM D-1785 or AASHTO M-278 minimum 4” rigid schedule 40 PVC 3/8” perf. @ 6” on center, 4 holes per row; minimum of 3” washed #57 stone over pipes; not necessary underneath pipes

This page was last edited on 4 August 2022, at 16:49.