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HomeMy WebLinkAboutGrading Plans - 07/09/20187-9-18 HEM --�, �k — Dbc.►Ny�ov1 l,Aza� D N Ii�NY D�TLE ti � l NDIGAc�h � � �r� on� � I w � u, �rca-� N To NtkGN01.1L� ✓`'�i�'� C.��- qSo s�� , (p2� WE57 MAGNOLIA $TREEf .. ; �L�� _ , . (Pf'�`� — — -- r�—�------- �: 1 � ` �., �i _ : � D,S, �.. .��. ��G DRNEWAV _,'� i E)Q577NG PORCH � � �(�M� N� IMP��2.v101/5 }� o� h��l-non, �� 6aJ� G°ti�, Wa►..4� , �2-�� � � — � i 63 ---�-- — � . — — ----- — L_ --�uk INblc:�t�S (0 � I �"' P[Q'Di110M5ETBACK— — — � 5. x �.e _ - --- � � � !�2�Pc 6� Y�tR� -�_____--_ __�_I_ ¢ oLL POSSI�E ROOF GI:TTER � � �\ FLOWS ARE TO BE DIREGTE� y � NORTH TO M.�YaNOL:A STREE' � 1{�'i II EV �SO I� I 6�i 1 � �� ���� �� `:�\� � �� � �` � , ti\\\\;\\\' � � fl.s, � i i P I�N'�k� t„HI.I� 6�' `� " � '�� ; ��sRap�( To ,i ," ��fJq�{ ('f/�Q� ,. 1�!� ElQSl7NG ONE SfORY RE9DENCE I X I �''l� `� "� f"' ''„" � 621 WEST MAGNOW ST0.EEf � x � �� i I � M'��f�laQc � i� i ,�Q n,,�, 1 I x I(�T'Pt�. %� � 1 i� $ J $ �x I 9 � 8.—=� �I � E t; x 7C�"" " y 5�'r� I � I �.L'� I ; I �X il I �•� i . i ��� � x ' � � � I� � '; I �• �asnHc vnno � % � il I �x IIx ��,�) I I _� I % I 3 �x I I� ` --------'" I `ss• uGv u�a scre�cK x I 31'i I x� � m awio�r � I �^ � I � , J �Z ,,..,o ��,,, , DRAINAC�� PLAN � ;� ,,,,a �`. �_ 1/8" =1'-0" z ao5-r5-lB:�W= , amFS......E'o�:, � LEGE�D� n�q�AnnM m fBM-i . TEMopRARi" B�I.Cu�Id�IC I I TpF = TOP OF Fp�NC4TIGN � TOF� . iOP OF FII�ISHEG FLOOR TOS = TOP OF SLaB I 60L • BA^K CF WdLK I�= EXISiING ELEV4TION � � PROP09E� =LEVAi:ON � / ' ADVANCED ENGINEERING, LLC STRUCTURAL DRAINAGE DRAFTING May 15, 2017 Mr. Scott Fetters HighCraft Builders 429 S. Howes Street Ft. Collins, CO 80521 RE: Site Drainage at 621 W. Magnolia Street, Ft. Collins, Colorado Advanced Engineering, LLC Project Number 1011-230-01 B Dear Mr. Fetters: We have consulted with you regarding an addition project that is proposed at the above referenced site. The home is to have a one story addition at the west side over a crawl space, with an attached garage. Our office has reviewed the existing and proposed drainage conditions at the sit�. This review included visual observations, a limited elevation survey, and area calculations. The purpose for this review was to evaluate the impact of the proposed project on existing drainage conditions. Existing drainage conditions are poor, similar to many homes in this area of town. The lot is generally very near flat and will experience ponding in most locations during precipitation events. Drainage at the front yard and existing parking pad �enerally flow north to Magnolia Street. At the side and back yard areas drainage generally flows to the southeast corner of the lot, passing through the adjacent lot to the east, to the alley beyond. The addition is located in the side and back yards. Based on our review, the impervious azea at the site will be increased by approximately 14% above existing conditions. However, approximately 90% of the new impervious area will drain to Magnolia Street via roof gutters and downspouts. Therefore, the newly developed drainage to the southeast corner of the lot will actually be reduced from the existing conditions in the yard. Given this, it is our opinion the existing drainage will not be negatively impacted and will continue to function as it has historically. The recommendations and conclusions presented in this letter are based on a visual review of portions of the described site/structures, your plans and your directions. Our review was limited to the items described in this letter, and is not intended to cover structural, mechanical, electrical, environmental, mold, or azchitectural features of the site/buildings. Discrepancies or deficiencies revealed during construction should be brought to the attention of the engineer. Thank you for the opportunity to serve you. If you have any questions, please feel free to call. .���`��,i���tt�t��1�1l�/����� Sincerely, '� F�Vv REG/S�'''''• . Advanced Engineering, LL `,`�w:; JN �� a,f,��.�`,pm,; �__ - g�',a= - ; 3 _ Jason E. Baker, P.E. ' �� � � %`' � . ' O .��� ��� /��t.�/:\;; President � {-f! � S'S , ,C � , �� �//��I� �U�i1�'� U\������ 229 12'" Street SW, Lo��H���Colorado 80537 Telephone 970-278-1909 Project No. `O�1 r l/ �lJ r �L � AD VA N C E D Calculated by �� date �� ENGINEERING� LLC Reviewedby date STRUCTURAL DRAINAGE ORAFTING zzs i z„, sr, s.w., �,ow, co sosa� �� �o-2�� i eoe TBSk �.r14� �� � Sheet � of � V 5i �: C�Zi (/i% n�� io� �-�yre�, �� Co�<i1 S�� � ��o� �-: �� ► �-� � �-�- �St- S ,d� o� �5�,� �� . J '''� --�x; s-�; w�s-{- s � d� a,� �k � o� r�E n��,� cor�.e� � � o� �.� 1 a�. —{ic1�l� re�� rec-�- �lC�� � v�c,� � �iQu�.s �r-e� r�.no� �-v no l4 a��-r�ce-� o..�- ,,cor' ���e. Q� 10�: � � Gc� � o�-�, dYt-S ; �`� !�-►s�jc � c�(y ��� �r'at`�c5 �o S�. 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