bld201301404_McGinness_ENG1.pdf
City of EdmondsBLD20131404
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.edmondswa.gov
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
PermitApplication:Date:
#BLD201301404February 12, 2014
Project Name/Address:
McGinness –726 Sprague St
Contact Person/Address, Fax or E-mail:
Chris McGinness –cmcginness@frontier.com
Reviewer: JENNIFERLAMBERTDivision:
ENGINEERING
During review of the subject submittal, it was found that the following information, corrections, or
clarifications would need to be addressed. All Handouts referred to in these commentscan be accessed at
our website: www.edmondswa.govunder City Government / Development Services Department /
Engineering Division then scroll down to Handouts:
ROAD & DRAINAGE PLAN
GENERAL
1)Consistentwith EdmondsCommunity DevelopmentCode(ECDC)18.90, a sidewalkis requiredon
Sprague St. Please show a 5’ sidewalk along the frontage of the subject parcelinstalled per Edmonds
Standard Detail E213.
a.Since the sidewalk slopes towards the street, the impervious surface runoff from the sidewalk
does not have to discharge to the onsite stormwater management system. However the area of
sidewalk needs to be calculated into the impervious surface calculations
2)Please clearly distinguish between the existing improved portion of the alley (gravel/paved area) and the
proposed alley improvements.
a.The area of the alley that is being improved for this development will need to be included in the
impervious surface calculations. Please revise the impervious surface calculations accordingly.
b.Please show how the surface water runoff from the new improved portions of the alley will be
directed to the onsite stormwater management system.
3)Please note that if the impervious surfaces are greater than 5000sqft the stormwater management system
will need to be designed by a licensed engineer and will not be able to be designed from the chart
provided in Handout E72A.
4)Please clearly label the roof lines.
DATE E-MAILED2/12/2014PAGE (1)
City of EdmondsBLD20131404
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.edmondswa.gov
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
5)Please show the proposed grading contours.
6)Per ECDC 18.80.060, pleaseshow that the driveway slope does not exceed 14%.
7)The slope for the alley shown on ‘Profile Section “A-A”’ (on sheet 1 of 3)and ‘Alley Section –B-B’ (on
sheet 3 of 3) arenot consistent. Please revise the plans to show the alley with no greater than a 2% cross
slope.
8)The maximum driveway width for a 3 car garage is 30’ (see Edmonds Standard Detail E2.26). Please
revise the plans accordingly.
9)Please show the alley being paved 12’.
10)Please add a note that compaction reports showing 95% compaction has been achieved in the alley prior
to paving is required.
11)Plans indicate that 232 cy of fill is required for the alley.
a.Please provide a response as to why that much fill is needed.
b.Please show on the plans how the elevation changes from the fill effects the adjacent properties.
12)A rockery detail is shown on the plans. However, if there is a surcharge on the rockery (by the driveway
or structures), an engineered retaining wall is required.
a.Please provide bottom and top of retaining wall/rockery elevations.
b.Please provide engineering calculations if required.
DRY UTILITIES
1)Please show the location of the dry utilities on the plans (i.e. power, cable, phone, gas, etc.)
a.A minimum of 3’ separation is required between the dry utilitiesand sewer, water, and storm.
Please show that the separation can be achieved.
b.Please add a note on the plans that all utilities must go underground.
SEWER
1)Please show the invert elevation of the sewer at the connection to the City Sewer Main line.
DATE E-MAILED2/12/2014PAGE (2)
City of EdmondsBLD20131404
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.edmondswa.gov
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
2)Please show the invert elevations at each of the cleanouts so that pipe slope and coverage over the pipe
can be verified.
3)Please show the sewer lateral (the portion of the sewer from the main to the property line) being a 6”
pipe and note what pipe material will be used.
4)Please show a 6’ cleanout at the property line.
a.Please add a note that the 6” cleanout at the property line will be 12” cast iron lamphole cover
and ½” hexbolts.
5)Please note what size pipe and pipe material will be used for the side sewer (the portion of the sewer
from the property lineto the house).
6)Please show a cleanout within 2’ of the house.
WATER
1)It appears that a fire sprinkler system is required for this property. The existing water service line from
the watermain to the meter is not the appropriate size and a new tap will be required.
a.Please show the new linefrom the watermain to the house.
b.Please show the water meter located at the property line.
c.Please add a note that a 1” meter is to be installed.
d.Please label the water service line as 1 ½” andnote the pipe materialwith tracer wire.
STORM
1)Impervious surfaces:
a)In the ‘Drainage Design Parameters Narrative’it states that the total regulated impervious areais
3,000 s.f (page 2). On page 4 of the report the regulated impervious area is stated as 3,750 s.f.
b)On the ‘Road & Drainage Plan’ (sheet 1 of 3) it is stated that the regulated impervious area is
3,917.35.
c)On the ‘Profiles, Notes, and Details’ (sheet 3 of 3)it is shown that the total impervious area is
3,750 s.f.
a.Please revise all documents/pagesto be consistent.
b.Please revise the sizing of the detention system accordingly.
DATE E-MAILED2/12/2014PAGE (3)
City of EdmondsBLD20131404
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.edmondswa.gov
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
2)Please show all storm lines (private and public) that exist within the alley.
3)The catchbasin that the subject parcel’sonsite stormwater management system is proposing to discharge
th
to is aprivatecatch basinand flows towards 7Ave, not as depicted on the plans.The City cannot
permit thesubject parcel to connect to that catch basin. The outfall line (west)from the private catch
basin (PD8-19) is a Citystormline.
a)Please show the installation of a catch basin at connection to the City System.
b)Please provide rim and invert elevations for all pipes connected to the new catch basin.
4)It appears that theimproved portions of the alley and a portion of the driveway may not be included in
the impervious surface calculations. Please check and revise the impervious surface calculations and
chart accordingly.
DATE E-MAILED2/12/2014PAGE (4)
City of EdmondsBLD20131404
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.edmondswa.gov
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
5)Per the City’s Handout E72A a 12” minimum catch is required in the control structure. The plan
provided shows 9” minimum.
a)Please revise the detail shown on the plans.
b)Please revise the invert elevations accordingly.
6)Please revise the note onthe plansto “If the depth from top of thecatch basinsto invert exceeds5’ a
Type II catch basin is required”.The original comment implies that this requirement only applies to type
1L’s instead of also applying to Type 1’s.
7)Please show where the footing drains will discharge to.
8)The City does not require a concrete gutter to collect surface water runoff from the driveway. The water
may also be collected by sloping the driveway such that the slope directs the runoff to a catch basin.If
you choose to direct the runoff via sloping the driveway, please show directional flow arrows on the
plans.
TESC AND GRADING PLAN
GENERAL
1)
Please show the proposed grading contours.
TESC
2)Please show the location of the construction entrance on the plans. The construction entrance shall be
located on private property, not within the right of way.
3)Please show the location of the silt fence on the plans. The silt fence shall be located such that all
digging is on the upslope of the silt fence. Pleaseensure that the location of thesilt fence is such that it
captures the installation of the sewer and dry utilities.
CONSTRUCTION SEQUENCE NOTES
1)Pleaseremove note 1. A pre-construction meeting is not required for a new single family residence.
2)Please remove note 6. There are no existing structuresand therefore the note does not apply.
DATE E-MAILED2/12/2014PAGE (5)
City of EdmondsBLD20131404
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.edmondswa.gov
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
PROFILES, NOTES, AND DETAILS
1)Please revise note 1 to state that the 2012 WSDOT/AWQA standard specs…instead of 2010.
2)Please revise the ‘Alley Section -B-B’ detail to show the following:
a.The alley sloping to one side instead of an inverted crown.
b.The alley being paved 12’.
Please resubmit 3 copies of the revised plansand associated documents with a written response to each
item to a Permit Coordinator. Please contact me at 425-771-0220ext 1321or by e-mail at
jennifer.lambert@edmondswa.govif you have specific questions regarding these plan corrections.
DATE E-MAILED2/12/2014PAGE (6)