HomeMy WebLinkAboutFile Documents.234 W Francis St.0118-2020-BRES (65) Engineering 1 _0118-2020-BRES_234 W Francis
40.Drainage Report.20201022.pdf(8)
ting drainage pattern is to the north,northeast and drainagAuthor: pjm
n the property are minimal at I.S-nercentannroximately. File Name: 40.Drainage Report.20201022.pdf Confirm soil _ rt' geotech.
Confirm soil type with
geotech. The revised geotech report specifies the soil -
Is`s`of construction°fanappr°x`mat•ly 3,472 square foots`ng'' depth as gravel and sand. Thi •_. - T I the
existing residence,remodel of the existing guest house,f p
andscaping and stormwater convey. ce and management faci MRCS descriptio -- r•- -•rained with
mo:- _ = T igh to high permeability.
p locates thi ite in the Type"B"soils area. Ilt, - •• S y
es within m.,.in u.it .-1=v,cai -Mergel com
Soil Conserva..•1 i`ce.eScrt.es a so,as well-drained a
. -ea.ility,and very low water storage capacity.The
.u. a.,m.°ae ea,a.=rn" Author: pjm
° File Name: 40.Drainage Report.20201022.pdf The analysis of hi •
cond. '•• ould be
. m �,a , n °^rho - ° Paragraph has been revised to describe a historic, predevlopment, and empty lot,
undeveloped condition. per the URMP checklist for
"°^•== "°` "- " " major projects. Revise this
,.. . .,.;... n,..�R e,•e..,a,.. paragraph.
Author: pjm Per Checkli ajor projects
File Name: 40.Drainage Report.20201022.pdf
STORM SEWER CALCULATIONS MP, calculate the storm
Downstream capacity has been calculate st sewer capacity for the next two
Per St(EX-P1), and the end of F (EX-P2)and downstream drainage structures
neereconsir (max velocity of 20ft/sec,
for Prolate In to
rmsewnt°ca it added to the a s. 50%full and max capacity minimum velocity 5 ft/sec at half
Edw �aamdrainage flow as been highlighted on the report grid for full conduit flow).
vefoclry�(max full
°45 each pipe.
Naec at half.
Author: pjm What infrastructure does this
File Name: 40.Drainage Report.20201022.pdf
co urtd to? Use a consistent
What infrastructure"' Callouts have been added to label the storm se naming scheme for the
Channel Report doeesm o eapont
° e°t rounds. The "West Roof Storm S rves roof infrastructure.
naming scheme fo
nverenowa Yve r,.unmonrorau mcwiv Na infrastructure.
,,,EAST STORM 100-YR, the pipes on the Plan downspouts on the e of the residence. The
y
`erEhI N areshownat4"antl Hi.hI "Eastewer" The pipes on the plan are shown
6"on the east sitle of serves the driveway trench
Diameter(ft) -- the property. Dept!
°r rain, mech. area, patio, eastern downspouts, and at andon the east side of
Invert Elev(ft) =788384 Valor the property.
Slope(%) we. downspouts on the north side of the cabin.
N-Value =0.012 Crit C
Top V
n„ Author: pjm COMM Oat tlle File Name: 40.Drainage Report.20201022.pdf Conf' at the storm pipes
ere sized so that the design
a,.IN During the 100-yr event, the east storm is depth does not exceed 80%of
""Po approximately 56% full. the diameter of the pipe. Is that
a parameter in the program used
" _______ for this calculation?
„... _
RECEIVED
05/20/2021
ASPEN
BUILDING DEPARTMENT
Author: pjm
File Name: 40.Drainage Report.20201022.pdf asin is considered in
TRENCH STORM?
Hydrology Report The trench storm is serving the co avement
which goes from the a garage. This area is
TRENCH STORM 100-YR', Vc basinls included i R-1.
TRENCH STORM?
HytlrograpM1 type =RaOonal eak tliscM1
5lorm frequency(yrs) =100 Time inie
Drainage area(ee) =0.010
Rainfall Inian(inlM1r) = Tc by User
IDF Curve =ASPS Rec Ilmbfa
Author: pjm
File Name: 40.Drainage Report.20201022.pdf Drywells used o QCV
need ount fora factor of
Drywell modeling has been updated to account for safety of 1.5 per the URMP.
volume factor of safety of 1.5. The re ui V Confirm the drywell has
2is 83.8cf, the detention volu or drywell adequate capacity.
—FE°cr,n a sizing is 125.7cf.
Author: pjm
File Name: 40.Drainage Report.20201022.pdf Acco a g to the site plan,this
area has a walkway and a mech.
An inlet has been added in the mech a • apture yard.Are these impervious
s " drainage from this area, wa . .r as been graded to areas? How are they treated for
tlaiteta�ti s water quality?These areas are
kN awilisigor4
a i flow to trench dr. •. q y
not discussed in the basin
i description in the drainage
report.
v"n�on�lll i
dI
40.Soils Report.20201022.pdf(5)
Author: pjm
File Name: 40.Soils Report.20201022.pdf Incorrect address, revise to be
Incorrect address, W Francis St.
revise to be W Address was updated.
Francis St.
PURE
• results of a
West Bleeker Street,-.pen,Color,
•.• ,. .• .-op recommei
in neawti ^ -toil fn
Author: pjm
File Name: 40.Soils Report.20201022.pdf Per the URMP Section 8.5.4.2
Drywells, a perc rate less than
Drywell section has been updated to reflect infiltration Sin/hour is not acce le for
rate of 30in/hr. drywells.
RECEIVED
05/20/2021
ASPEN
BUILDING DEPARTMENT
Author: pjm Infiltra ' is 2 min/in here
draining and should be suitable for surface water
t�fRt�! edinBorinQl orb File Name: 40.Soils Report.20201022.pdf
Table 2 says perc rate is 2
Infiltration rate was updated. min/in.Are these terms being
used as synonyms in this report?
Infiltration rate is 2
min/in here but Table
2 says perc rate is 2
min/in.Are these
terms being used as
synonyms in this -
report?
swardOAP-08 chill ng lM bodnys were logged by s rcpeemNliw of Kumar A Author: pjm
aura. File Name: 40.Soils Report.20201022.pdf Per the soils report requiremen
ofae, oibwereuger,w;"I''•;�.nx;m�g°spoon outlined in th ppendix
nw, odors..
Th„��um,m.; ;2m,n,e,nnon,att„ ;; Report was updated accordingly. raulic conductivity needs
w �derwIX m �°AZ:°""I"d to be included as well as the
n Ne Lop of Exploratory Boring,figure x.The samples were .Appendix",hydraulic
° needs testing method.
theltte°sti g method.as
MINIMA.CONDITIONS
n by relatively w n x y sandy
gravel
.oe n wi.probable boulders down to
ng,�nm nn mNebodng;naua�nerunlmniermn
:o the subsoils at various depths with blows from a 140 pour Author: pjm Identify the NRCS soil type.
lit is similar to then - •--°--• ebbed by AS File Name: 40.Soils Report.20201022.pdf
Identify the NRCS soil
a resistance values type. ive density a
hsat which the samples re taken and the penetration resin Soil type was included in report.
.og of Exploratory Boring,Figure 2.The samples were rent
heproj-e -
SUBSURFACE CONDITION
tfthe su eft
s shown
r about 2 feet of topsoil,consist of about 3 feet of natural,sti
90.Architectural Plans.20201022.pdf(2)
_ It Author: pjm
__ I I File Name: 90.Architectural Plans.20201022.pdf Survey mu ormed or
o$f within the last 12
== g Survey has been verified within last 12 mont months. Revise.
Author: pjm Surveyor cent' ' to shall match
File Name: 90.Architectural Plans.20201022.pdf
w own in the COA
SURVEYOR'S CERTIFICATION Surveyors certificate has been revised to Engineering Standards and call
�m a � a•�••--•m•-• include error of closure less than 1:1 out an error of closure of less
than 1 1 00
less�Rk�oRE oROE_ than
RECEIVED
05/20/2021
ASPEN
BUILDING DEPARTMENT
90.Civil.20201022.pdf(21)
_,,,rffi.. II; ;. _ma Author: pjm Water service line and drywell
File Name: 90.Civil.20201022.pdf
r r . :l •-,- -ss than 10'horizontal
% /, 00 Horiztonal separation between drywell .•• - me separation.What measures are
A'1 has been modified to 1 e' •••'-. proposed to prevent the water
q service line from freezing due to
introduction of freezing air from
Cony ° 4 ", the drywell?
. __� I_LLL Author: pjm
NV iMrFile Name: 90.Civil.20201022.pdf Call out material of proposed
frAl
. -r service line with the size.
Type K copper has been added to the c. ..
O •4"W 89.63'�� 4
t WWI , SHUTOFF uYE ilk„ O111
„I
vs Author: pjm Call out vertical separation from
File Name: 90.CiviI.20201022.pdf
the storm main I'
18-inch vertical separation, and 10' horizontal ho • separation from the
WEST FRANCIS '''`°'n°M' - separation callouts have been added. Inverts we proposed manhole.
_r_ _ T dipped at the manholes at 2nd St a o
establish the existin v , and Francis St was Was the storm main testholed to
.=: surveyed a the existing surface. confirm depth?
Author: pjm Excavation stab'• ' pans
File Name: 90.Civil.20201022.pdf
w rovided as part of this
Excavation stabilization plans were not submittal.What is the
provided as part of this submittal.What
is the stabilization plan for the GC provided a CMP with excavatio stabilization plan for the
installation of the basement and the plan, includingengine i ization plans. installation of the basement and
drywell?Provide plans that comply with g
the checklist in the Engineering the drywell? Provide plans that
Standards.
comply with the checklist in the
Engineering Standards.
,.!7w - r .-ro.
,/A~,,� ! , p Author: pjm 2"type K copper is able to
N "'�1O"`�-` i PROPOSE
rati..•�. ���" File Name: 90.Civil.20201022.pdf accommodate"sweeping"bends
li
LTAWater service line has been modified to show rather than 90degre- •--. .
'" sweeping bends rather than 90 degree bends. Revis- • -- . s ow this.
RECEIVED
05/20/2021
ASPEN
BUILDING DEPARTMENT
° o o,,, Author: pjm
- U G O O File Name: 90.Civil.20201022.pdf This line type appears to be
1OL
130 used as storm pipes on the
Legend has been modified to remove the hatching. following page. Clarif .
Y Y This line type appears
to be used as storm
pipes on the following 1 page.Clarify.
— —SS—
PROHE N
IL EL_' �_ Author: pjm
___ ;� Include the • •- - ypes in the
■ File Name: 90.Civil.20201022.pdf
de ®A .�„ _-- . or proposed conditions
__ ___ Legend has been modified to include the light , - to clarifyhow to read this plan.
T J ..4. _s% .!:— - drain line type.
` I� g. a:s1� '.�I=,
— h.
'Po'E:N:..: 1,
I =IIZL 4 r _ Author: pjm
:ems .� I� I Note that the private
ate Pak. File Name: 90.Civil.20201022.pdf Noteinfra th e ROW will
_ A - it • "—,� `� Understood. A permanent encroachment will be ulre a revocable permanent
r �� submitted prior toCO. encroachment prior o CO.
ffirte; ,'71.I '
I I Author: pjm This trench drain ••es not
ThifiTbdrain I File Name: 90.Civil.20201022.pdf
does capture I ca it - . •' from the driveway
fOOe"fr°^"he Gradinghas been revised for drivewayto drain to
ddveway before i, .store it leaves the site, revise
ea"es`hefii`e,revise R_ ___ trench drain. Trench drain grate capaci _. ave the design. Provide capacity
capacitysl9ca Provide -
calcs for the a
'fe°°hdra' been added in the appendi _. calcs for the trench drain.
«3,25o N °
=
''''''i afia 9 ,1 ,^'
t o__ Author: pjm
-,vv. 1 �N File Name: 90.Civil.20201022.pdf Is this the grass sw- -
I mentioned in •, •rainage
I ,° This is the grass swale discussed in the report. report? ' •vide capacity calcs
1,` •m F °°° Capacity calcs have been added to the report f• e swale and a cross
iT"' appendices, a cross section has been added to the
�,,,; �I °° • pp section.
Is ar,«•tan,4i9
7I.,II�7•I�����rV ,4. details.
�r+�• Faocoseo
ABIN
�H i eo MAIN FF:7885.60 a;
RECEIVED
05/20/2021
ASPEN
BUILDING DEPARTMENT
1U eau Author: pjm
NN' �000`;FA�Fs File Name: 90.Civil.20201022.pdf Provide capacity calcs for all slot
,_- _ drains pro•o -. : e..
STORM roNRooF°°WNSP°°TED A slot drain capacity analysis has been added to the
� SaEOETRC03�Ot5FORF P�LAry. yRAIN LEADER
� rtivi��r PROPOSED slot drain detail on sheet C401.
. .I/II/I AI Prowdecapacity!
d for all slot
g I on a s proposed
wAS -
- The • . in ront of the cabin entry has been
°°° F removed.
/ ��/ FINISHED T�FL
{. El Author: pjm
p Ir • E; Per presubmittal s, this
C ar w off File Name: 90.Civi1.20201022.pdf pro' nically required to
. �N 4/ Riprap with geotextile fabric is proposed to be install C&G, however Council
- "-------: - installed at the end of the existin n gutter. has requested the no new C&G
��_ be installed. How is street
--- ,-- No modifications sed to the existing
drai erns from the street which would drainage managed? How is the
"" negatively impact the downstream property. downstream property impacted
by this.
Author: pjm How is the discharge rate of the
!_ 1 - SU E RRE BELOW
FINISHED INSTALL 20 MIL GRADE,TW. i File Name: 90.CiviL20201022.pdf
_ S'D
*/ -I A(C drywell impacted by this
DPE L ER
-, a IANp f�,ND a° Discharge rate of the drywell is not to be impacted by impermeable li - ?
- impermeable liner. Liner is to be placed between
,.. °R WELL i foundation and drywell, with native soils ...- - o
d
_ How is the discharge _ gravel ring.
1 ik_ rate of the drywell
impacted by this /
impermeable liner? \
Author: pjm
;.. , DISCHARGE
o AN File Name: 90.Civil.20201022.pdf Provide detail of the sump pump.
� * Sump pump has been removed. Overflow will
..11� aPERa BE EN SUMP
SUMPPO
F°°rv°A FCONNECT ill I °sE=aRM°ACE discharge out of catch basin CB-1.
°ER
M.
7SED
IN
I 1
I
IS FOR CONTINUATION
V401,1.� -1 I Author: pjm
iN coNNECT To— I File Name: 90.Civil.20201022.pdf What does CB-1 mean?
r.° '°I"�' CB-1 is a catch basin. The gravel pocket only serves It appears th ipe
I.1 � 1 light well drainage and is below CB-1, and is not gang to this gravel pocket
� w^rw�w. ma connected to CB-1. This is a limited area of does not have WQ treatment for
-- 1 F.E7u,Lr wP,e - drainage from rainfall that enter wells. the impervious area routed her.
o=���a4 g How is WQ provided?
RECEIVED
05/20/2021
ASPEN
BUILDING DEPARTMENT
�- ' .ots = -a=, —r Author: pjm
File Name: 90.Civil.20201022.pdf Provide some nar - .r the
�i' stac.-. :'.- design.
„,-4g i� — The pipes are to be stacked vertically at sta 0+39.93 rather than
%•�' � ®�v side-by-side. The lower pipe cannot be represented II • . ,ew
' �r.►wwiiaaiwii�s 'r
4�� It looks like the two pipes turn
�%� as its below the upper,therefore only on- •': s own in plan
/ /, — I view starting at the stackin. • '• . Sta 0+39.93 is the correct into one pipe on the plan view.
stacking loca..• • . .n and profile view. The basement The double stack pipes in the
. in location as represented was incorrect and has been plan view doesn't match the
adjusted to sta 0+40.43. A U-shaped channel will be formed into double stacked pipes on the
' the top of the basement slab to fit the stacked pipes and has been profile.
coordinated with structural.
Author: pjm
r File Name: 90.Civil.20201022. df In the maintenance plan
1 L p submitted for Certificate of
>E Maintenance procedures for the riser will be Occupanc ' c, include
_ _� _au developed and submitted for CO. • maintenance
—_ procedures for the"candy cane"
so that runoff doesn't bypass
1 .M ; straight to the overflow to the
o,E - — storm main if it clogs quickly.
Author: pjm
I File Name: 90.Civil.20201022.pdf Call out that the lid should be
Call out lid
thatch ea°easiso placed so that the access is out
oha"h°a"°=°'_°f Callout for lid to beplaced outside of wheelpath has • -
aw"aa'°a'" eel path of moving
� moving vosicles as
°`a'° been added. vehicles as best as possible.
-x,_ C I
Author: pjm
File Name: 90.Civil.20201022.pdf Provide profile for storm lines on
west side of the house.
Profile for storm line has been added to sheet C302.
Provide profile for (—
storm lines on west
side of the house.
--------------- r Author: pjm
1 \ File Name: 90.Civil.20201022.pdf These pipes are not included in
li the profiles shown on C301,
A inn ji Profile for storm line has been added to sheet C302. ensure all pipes have a profile
view in the plans.
• l ��
olr3 I I
imm.QS i 1
Fill' ®
--=T
tC •.i� 10.E -- 1+Q
6,
RECEIVED
05/20/2021
ASPEN
BUILDING DEPARTMENT
Author: pjm
File Name: 90.Civil.20201022.pdf Call out the drywell depth.
Call out the drywell Dr well depth has been added. Depth is also shown Provide calcs for drain
depth.Provide calcs y p p time for th per Chapter
for drain down time
for the drywell per on storm structure table sheet C300. a URMP.
Chapter 8 of the
URMP.
At the bottom of the drywell siz adsheet is the
required percolatio calculation per URMP
., cha a required percolation area for a 24hr
raindown is 83.1-sf. The percolation area provided
is 257.E-sf.
RECEIVED
05/20/2021
ASPEN
BUILDING DEPARTMENT