|
I
<br /> ,, , �. �� �TRENC�I AND BED W�RKSHEET
<br /> ' 1. AVERAGE DESIGN FLOW ' (,Y��-��� ����� i
<br /> A-1: Estimated Sewage Flows in Gallons per Day
<br /> ' A. Estimated �.,�C� gpd(see figt�re A-1) �����L,�!,�� num er o
<br /> or measured_x 1.�(s�fety factor) =_gpd bedroor�s aau i ciou u ciass ui ciass iv
<br /> B. Se tic tank ca aci uv j al(see ur�G1)ta��x14.- Ch1�w►Q+�� 2 ' 300 2zs ieo ao�
<br /> p p ty �ig fi� 3 i 450 3D0 218 ofthe
<br /> �����'d' ' 4 ' 600 375 256 values
<br /> 2. SOILS (Site evnliiation dnta) ' S � �so aso 29v ��rnz
<br /> I �S'.+�WYE-:a Fit�1'fN'��fA"5�'� 6 i 900 525 332 Clossl.
<br /> C. Depth to restricting layer= 55,�•.S� ft 1'�"��w�u ��v���.�,,.g��� � � ioso aoo s�o n,o�m
<br /> D. Max depth of system Item 2C t 3 ft= �sS.S ft a 3 ft= �!�`• ft e I 1200 675 aos columns.
<br /> E. Texture Lo�wt Percolation rate /(�--3c� MPI I
<br /> F. Soil Sizing Factor(SSF)/.to� �Sqft/gpd(see figure D-15) c-�: s� tie Ta�ik Ca acities iin eallons�
<br /> Ci. °/o Land Slope ^"� % � "iumber of A(inimum Liquid Liquid capuciry�w�ith Liquid capaciiy
<br /> i Bedrooms C�PBCIf)' �:Ifb:i�`C dI5POS8I N����SPOS�IS
<br /> i lil'�inside
<br /> �or less I 750 I 1'_5 �S�
<br /> 3. TRENCH or BED BOTTOM A iEA 3 0�, � i000 isoo ,�
<br /> H. For trenches with 6 inches of ro�k below the pipe: �Ss o69 I ;Soo�o 3o�'a°o 30°°
<br /> A x F= gpd x sq�t/gpd= sqft ,
<br /> I. For trenches with 12 inches of rdlck below the pipe: i
<br /> D-I5: Soil Characteris[ics and Soil Sizing
<br /> A x F x 0.8= gpd x i sqft/gpd x 0.8= sqft Fac�or(SSF)(>3'sepantion)
<br /> For trenches with 18 inches of r ,ck below the pipe: �'°«°�°���^R�« Soil Sizing Faclor
<br /> 1 minules prr inch $oil Texture .yuurc feet/�;aliun
<br /> A x F x 0.66=_�pd x ' sqft/gpd x 0.66= sqft '��� �� rr duv(. «�• ,,,
<br /> faste�[han 0.1' Cuorsr sand 0.63
<br /> K. For trenches with 24 inches of ro�ck below the pipe: o.���s Medium yand o.s3
<br /> ���.,�„y.�„d
<br /> A x F x 0.6= gpd x I sqft/gpd x 0.6= sqft �.��ti,s•• Finrzand ,.b;
<br /> � 6 to 75 Sandy loam �
<br /> L. For gravity beds with 6 or 12 inches of rock below the pipe; 76[u30 L„�,��� ,.6;
<br /> 1.5 x A x F=1.5 x__gpd x�sqft/gpd = sqft ' s"'
<br /> 46 hi 60 Clav luam 2.20
<br /> � Sa�idya�lay
<br /> For pressure beds with 6 or 12 inches of rock below the pipe; ; s;,�.�.��a,•
<br /> ovrr�61 to 120'•' Cla�• 4.20
<br /> A x F=�gpd x/.�.�qft/gpd=J 2S3 sqft , sa,;d���a,•
<br /> i s;ir.•�i.
<br /> !I 7l b J c�ov,p.ehal,tzo»•• >•
<br /> 4. DISTRIBUTION(Clieck nll thaf a�pl�) -u.�,Y��r�„� �r rapidl��prrmrable suilx:
<br /> prcssurr diatributiun or serial dixtribution with
<br /> i `/ na tr'r�uh>25".:of thr totul avytr�n.
<br /> Bed(<6%slope) Drop bo�Ces(any slope) Y ROCk 'S�i I having 50%or�nurc finr Qand plux vrry fine sand
<br /> `••A,muund must br uced.
<br /> Trenches Distril�ution box <3%
<br /> � � Chamber "'dn o[hrr or prrfurmancr+v�tem muvt br u:�ed
<br /> � Pressure Gravit;y Gravelless �
<br /> I �
<br /> D-9: Soil Characteristics and Soil sizin
<br /> 5. SYSTEM WIDTH�LENGTH and�VOLUME j factors(SSF�for Gravellass Pipe g
<br /> M. Select trench width= a.e� I ft Petmlation ratc lincal fc�t/
<br /> (nlnutc¢/in:h) suillexturc gallun/day
<br /> N. If using rock,divide bottom are by width: (H,I,J,K or L)=M= F,�«<<�,a���.�• c�,.u5��d _
<br /> � O.1tu5 MediumSnnd 0.26
<br /> Li�s2_sqft��_ft=�'�lin al feet Loamy Sand
<br /> I 0.1 to 5 Finc Sand•• 0.6
<br /> _ Rock depth below distrib tion p pe plus 0.5 foot times bottom area: , ����s Sandy Lnam �,.a�
<br /> teto3lt l.oam n.56
<br /> Rock depth in feet+6:5' eet x A�ea(H,I,J,K,or L) I 3���as Silt Luam o.b�
<br /> t [ [ si�
<br /> �lt�-�lf X) $ !t= '46tu60 ClayLi�.im(CL) 0.74
<br /> (1_ ) ��o q Jt,3l�d cuft i s,,�,a,�c�
<br /> Silh•CL
<br /> V olume in cubic yards=cuft+27 s���;��•��»,���•- c�.,� ---
<br /> s,�,dy�t,,y
<br /> r���� �uft=z�- c 9c� �uy�s i s;��>.��rY
<br /> 5oi1�uo coarvc fur wwa•c tmaMmnt.
<br /> Weight of rock in tons=cubic yds x 1.4 U.�systems for rapid�y F�crmcablu Yuilx.
<br /> � •5oil having 50'Y,or morc iinc sand+vcry(inc sand.
<br /> ___�(Lcuyds x 1.4=�_tons "5oi with tuo high a perecnta�;c of elny(ur
<br /> � ins allatiixi of a xtvidard inground;cyrtem.
<br /> O. If using 10"Gravelless Pipe, I'lQw(A)x Gravelless SSF(see figtire D-9) �
<br /> gpd x lineal feet = � o;- r;.� `'"""'".""
<br /> P. If ��Pf lineal feet _ i ,:,�ze= , .. �ra,,,<,..a
<br /> using Chambers,H,I,J,or K(based on hieght of chamber slats) • ; �' •�4is� j < <�
<br /> wi d t h o f c ham ber in fee t(M) i ; -`:,;�I c - ��-��°�^`� I �y uw a o,:�
<br /> � `:aa;: �~•,:o e�e
<br /> sqft- ft= � lineal ft _ ��°""•��`�:'
<br /> j ' <�°.a::<;,oSb::p;
<br /> -e:
<br /> %t§iP�;g�q:^"p�:<s:: 624"Rock t I
<br /> , I a�: :...A:�'e�a.s 3/4-21/2 ��
<br /> 6. LAWN AREA ! , �,�;�;�.�; o 0
<br /> I I ...e�A�i4���::O�iR.
<br /> °"q�e'e ZiP.b::`•'�...°:
<br /> Q. Select trench spacing,center to c nter= feet � ����a�a�e�••s:o-��
<br /> ux-wr�n
<br /> R. Multiply trench spacing by linea feet R x Q=sqft of lawn area ;
<br /> ft x ft= sqft
<br /> 7. Include a drawing with scale(oneiinch=�_ft). Show pertinent boundaries,right of way,easements,
<br /> location of house,garage,driveway,�11 other imporvements,existing or proposed so�il treatment system,well and
<br /> dimensions of all elevations,setback�and separation distances.
<br /> I
<br /> I �
<br /> I hereby certify that I jave cg�plet�d this work in accordance with applicable ordinances, rules and laws.
<br /> ��- � � I
<br /> � ' � / `---'--�� --- (signature) 3�i � (license#) � B-'/S-U') (date)
<br /> �
<br /> I� I
<br /> , i
<br />
|