HomeMy WebLinkAboutWTR2700098 1. S MG RESERVIOIR IN HIGHLANDS W-98
Specifications
2.11 SITE WORK
2.10 Scope
The work covered by this section includes the procurement, hauling, place-
ment and compaction of suitable borrow materials for construction of an
access ramp to thn ;Nest side of the reservoir berm and for flattening the
slope of the existink embankment from 1:2 to 1:4, rn the perimeter of the
two reservoirs as shown on the site plan. Th.a site work shall also include
minor repairs to the existing curb wall, with cement concrete.
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2.20 Fill
Tt^ corstruc tion of the access ramp and the additional fill around the
existing emhankment shall be made with materials from approved borrow
sources.
Borrow - -+al is not available at the site but is obtainable within a
two mil :..ius, or less. To be suitable, a sand containing sufficient
fines or clay for good compaction is best. Excessive clay or organic
material will not be accepts. U-. Rocks over 4 inches in diameter and F
woody material shall be removed.
The fill shall L placed in layers individually compacted by machine
travel.
Moisture shall be controlled for maximum density within practicable
lin;t s.
All surfaces shall be trimmed to smooth, straight planes of the proper
slope.
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CITY OF RENTON
ROOF FOR EXISTING 1..� M.G. RESERVOIR
PROJECT W-98
Table of Contents
6.0 STRUCMRAL STEEL AND ROOF .FOISTS
6.10 Materials
6.20 Fabrication
6.30 Erection
7.0 ROOFING AND SIDING
7.10 Materials
7.20 Fabrication and Installation
8.0 MISCELLANEOUS
8.10 Hollow Metal Doors -
8.20 Concrete Catch Basin s� ;I
8.30 Concrete Pipe -
8.40 Asphaltic Concrete Paving Y
9.0 MEASUREMENT AND PAYMENT _
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9.01 Site Work
9.02 Formed Iieinforced Concrete ;
9.03 Precast Concrete Units
9.04 Prestressed Concrete Girderi`
9.05 Structural .Steel
9.06 Roof Joists
9.07 Aluminum Siding and Roofing ^
9.08 Hollow Metal Door -
9.09 Concrete Catch Basin
9.10 Furnish and Install 6" Concrete Pipe
9.11 Asphaltic Concrete Paving yT
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CITY OF RENTON
RO"'4 FOR MSTING 1.3 M.G. RESERVOIR
PROJECT W-9S a
Table of Contents
Instructions to Bidders
Bid Proposal
General Conditions
Specifications: 1.
1.0 SPECIAL CONDITIONS
1.10 Scope of Work DA i
1.20 Time of Completion itx 'i,.iY
1.30 Protection of Existing Structures
1.40 Cleanup
2.0 SITE WORK
2.10 Scope
2.20 Fill -
3.0 REINFORCED CONCRETE
3.10 Scope
3.20 Materials
3.30 Placing and Finishing Concrete
3.40 Miscellaneous Labeddcd Steel Items
4.0 PRECASr CONCRETE UNITS
4.10 Scope
4.20 Details
4.30 Curing
4.40 Identification and Marking
4.50 Erection and Joining
5.0 PRESTRESSED CONCRETE GIRDERS
5.10 Materials
5.20 Fabrication
5.30 Identification and Marking
5.40 Frection and joining <-
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8I1) PROPOSAL
ROOF FOR EXISTING 1.5 M.G. RESERVOIR
PROJZCT W-98
Unit
It_m �antit Unit Deseri tion Price Amount
9 21,700 Sq.ft. Aluminum Siding and Roofing y
lU 2 ea. Hollow Metal Door with :raw "'` ■
11 1 ea.. Precast Concrete Catch
Basin �-
12 25 l.f. Furnish and Install 6"
Concrete Pipe
13 160 s.y. Asphaltic Concrete Paving _
SUB TOTAL S �
State Sales Tax, 4%
TOTAL BID
If awarded the contract, I agree to start work within
calendar days and to complete the work within calendar days
from date of the contract.
Attached hereto is for S payable to the
Treas.:rer, City of Renton, which amount is Amore of the bid above.
Address of Bidder; Signed
(Title)
Phonc Date
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61D PROPOSAL
ROOF FOR ERIbTIKG 1.5 M.G. RESIiRVOLi !�
PROJECT W-98
Ttte Honorable Mayor and Council
City of Renton
Washington
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Gentlemen:
The undersign+d hereby certifies that he has examined the site of the proposed
work and that he has read and thoroughly understa:.ds the plans, specifications,
and contract governing the work. It is further understood that the Contractor
is to furnish the materials, labor and equipment necessary for the construction
Of a complete structure except as otherwise specifically stated in the plans
and specifications, and that the costs of the same are included in the prices
quoted hereafter. Accordingly, the undersigned proposes and agrees to undertake
and complete the work as set forth, in the time and at the prices quoted as
follows:
Unit
Item Quantity Unit Descri lion
erg. _ Price Amount
1 1 l.s. Site work S �
2 75 e.y. Formed reinforced concrete
3 8 e.a. Precast Concrete Columns, 16"
x 20" in place �-
4 4 ea. Precast Concrete Struts
10" x 20" in place —�
5 6 ea. Precast Concrete Struts,
10" x 16" in place
6 12 ea. Prestressed Concretep pp
Girder, in place
7 3,900 lb. Structural Steel l�
Open Web Roof Joists
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Specifications
9.08 Hollow Metal Door (Bid Item 10)
The bid price f,�r tae hollow metal door shall include all costs of
labor, materials and equipment necessary fo: the fabrication anc
installation of the doors. It shall include the hardware and the
printing.
The basis for payment will be the numcer o` doors installed.
� 9.09 Concrete Catch Basin (Bid Item 11)
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The bid price for precast concrete catch basin shall include the cost of
all labor, materials and equipment for furnishing and installing a
concrete catch basin with cast iron frame and grate conforming to the
plans and specitieationa. It shall includ,, the excavation a-,d baekfill
as required and the connection of the drain line.
The basis for payment will be the number of catch basins installed.
9.1C Furnish z.d Install 6-inch Concrete Pipe (Bid Item 12i
The bid price for 6-inch concrete pipe shall include the cost of
furnishing, placing and jointing the p..,)e and fittings, the connection
to the existing drain, trenching and backf+.11ing and any other incident-
al work necessary for the construction of the new drain line as shown on
the plans.
The basis for payment will be the lineal feet of concrete pipe measured
.., place.
9.11 Asphaltic Concrete fav�ng (Bid Item 13)
The bid price for asphaltic concrete paving shall incl,- te the c^st of
grading the existing berm, the sterilization of the area to be
paved and the furnishing and placing of the hot mixed asphaltic con-
crete.
The basis for payment will be the square yards of paving actually
placed.
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Specifications
9.04 Prestressed Concrete Gird,-r (Dial Item 6)
The bid price for prestressed concrete girders shall include the cost of
all labor, materials and equipment for the fabrication and erection of
the girders, including steel inserts, bearing pads, and reinforcing
steel connections. It shall also include the additional reinforcemer'
ar.d cast-in-place concrete at the joints with the cclumn s.
The basis for payment will be the number of girders in place and
permanently joined.
9.05 Structural Steel (Bid Item 7)
The bid price for the structural steel shall include the cost of all
labor material and equipment for the fabrication and erection of the
steel members usher than the open web roof joists. It shall include
shot, and field welding, galvanizing, anchor setting and grouting as
required.
The basis for payment will be the calculated weliht in pounds of steel
in place conforming to the plans and specifications.
9.06 Roof Joists (Bid Item 8)
The lump sun bid for the open web roof joists shall include the cost of
all labor, material and equipment for the fabrication and erection of
the joists. It shall include shop and field welding, galvanizing,
outriggers, bridging and all accessories necessary to complete the
joists erection. It shall also include the cc ncrete supports and
bearing plates on the center span girders.
The basis for payment will be the lump sun bid for open web roof
joists in place conforming to the plans and specifications.
9.07 Aluminum Siding and Roofing (Aid Item 9)
The bid price for aluminum siding and roofing shall include the cost of
all labor, ma ierials and equipment fur the fabrication and installation.
It shall include flashing, fasteners, closures, painting, caulking and
(very other accessory necessary to complete the job in a workmanlike and
satisfactory way.
The basis for payment will be the computed square feet of aluminum siding
and roofing measured in place.
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Specifications
9.0 MEASUREMEFT AND PAYMENT
9.01 Site Work (Bid Item 1)
The lump :ium bid for site work shall include the cost of all labor,
materials and equipment for procurement, hauling, plac.ment, rnmpaction
of borrowed materials, and fine grading, for the construction of the
access ramp and for flattening the slope of the existing embankment.
It shall also inc Jude minor repairs to the exist:ng concrete curb wall
■ and any other work incidental to the completion of the job not speci- ■
fically included in other bid items.
The basis for payment will be the lump sum bid for .site work.
9.02 Formed Reinfor-ed Concrete (Did Item 2)
The bid trice for formed reinforced concrete shall include the costs of
breaking existing concrete work as required, excavation, form work,
reinforcing steel, concrete, stripping, finishing, curing, backfill
and protection and every other accessory necessary to complete the
concrete wo-k in a workmanlike and satisfactory way.
It shall specifically include the furnishing and setting of miscellaneous
embedded steel items, dowels and bolts, the construction of expansion
joints, the roughening of the existing concrete surfaces and the
connection of the new work to the exi-ling struct•re. It shall also
include the replacement of joint sealing cumpound and the repair of the
existing concrete work where removed or damaged because of the new
construction..
The basis for payn.-nt will be the computed cubic yards of concrete in
place to the dimensions shown on the plans or subsequent modifications
thereof.
9.03 Precast Concrete Units (bid Items 3, 40 5)
The bid prices for precast concrete column and struts shall include the
cost of all labor, materials and equipment for the fabrication and
erection of the preca•:t members, including steel inserts, bolts and
dowels, temporary shoring and bracing and reinforcing steel connections.
The r-ice for the column shall also include the grouting, the rein-
forcement and cast-in-place concrete collar at the joint wi-:h the
spread footing. The price for the 10-inch by 20-inch strut shall also
include the additional reinforcement, the cast-in-place concrete and
the welding at the joint with the abutment.
The basis for payment will be the number of columns and struts in
place and permanently joined.
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Jpecifications
8.40 Asphaltic Concrete Paving
The existing berm shall be graded and sloped to a 3•foot gutter and
paved with 2 inches of hot mixed, hot lai.l asphaitic concrete as saown
on the plans. The North side gutters shall slope to the existing
paved area, and the South side gutter shall slope to a concrete catch
basin.
The asphaltic concrete mixture, and placing, shall conform ti State
Highway Department Specifications for Type I-1. The material shall be ■
compacted by rolling while hot, with addition or removal of material as
necessary to obtain a smooth draining surface.
The areas to be paved shall be sterilized with a permanent poison,
"Pentex" or equal, before laying the asphaltic concrete paving.
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Specifications
6.0 MI SC-1d.uVJFA)W
8.10 Hollow Metal Doors
A 6-foot by 4-foot, 1-3/4-inch hollow metal swing double door, flush
type, shall be installed at each end wall of the reservoir as shown
in the drawings.
The doors shall be as manufactured by Fenestra, Inc. , Detroit, Michigan,
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or equal. ■
Hardware shall be bronze US26D fir:.;�, and shall include 1-1/2 pair
5-inch by 4-1/2-inch hinges per leaf, tvp and bottom bolts for inactive
leaf, tee latch and padlock hash.
Doors shall receive one shop clat of baked-on metallic primer and two
finish coats of oil paint. D, Ors shall be set plumb, square and true,
and adjusted to operate perfectly.
8.20 Concrete Catch Basin
A precast concrete catch basin, 2-feet by 2-feet approximately, with
cast iron frame and grate shall be installed on the existing reservoir
embankner# : the location shown on the drawings.
8.30 Concrete Pipe
The drain line from the embankment catch basin shall be constructed of
6-inch concrete pipe.
The concrete pipe and fittings shall be of dense, impervious, high
strength concrete materials, well-vibrated and with a smooth interior
unreinforced and shall conform to latest ASTM - C 14. Joints for the
concrete pipe shall he made with cement mortar.
Trench shall have a uniform grade to provide support alung the barrel of
the pipe. Bell holes shall be provided. Trench shall be free of water
until b.ackfilled. Selected soil, free of large rorl.s, shall be tamped
under the pipe up to the springline and the pipe covered with 12 inches
of selected backfill before the remainder of the backfill is placed. If
moisture conditions make good compaction for support impossible to
the Contractor shall provide pit-run sand backfill to the middle of the
pipe.
Backfilling of concrete pipe shall nut be permitted until cement in pipe
joints has completely set.
Connections to the existing 10-inch concrete pipe drain line shall be
made in a neat workmanlike manner.
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Specifications
7.0 ROOFING AND S101'VG
7.10 Materials
Aluminum roofing and siding shall be .ilcoa V-3eam 4-7/6-inch pitch by
i-.,/4-inch depth by 41-1/8-inch width, 0.040-inch thick, stccro finish,
natural color. Flasbine shall be formes .:itn flat industrial aluminum
Sheets 0.040-inch thick, stucco finish, natural color. Perforated flashing
shall be formed with aluminum perforated sheets, 0.024-inch thick, stucco
finish, natural color.
Closures shall be aluminum or preformed rubber as manufactured by
Fabricated 7roducts Company, 'Nest Newton, Pennsylvania, or approved equal.
Fasteners for securing aluminum roofing and siding to the structural
supports shall be c 305 stainless steel self-tapping screws, No. 14 by
1 inch with hexagonal head Type "B" and 5/8-inch O.D. composite aluminum
and neoprene washer.
Fasteners for side laps and for securing flashing shall be aluminum sheet
metal screws No. 12 by 3/4-inch, slotted panhead Type "A".
Where fastening to concrete is required, expansion shields shall be used.
All materials shall be subject to the Engineer's approval.
7.20 Fabricati,m and Installation
Shop drawings giving all necessary information for the fabrication and
erection of the roofing, siding and flashing shall be submitted for
approval.
and laps for roofing shall be 9-inch; side laps shall to one corrugation.
Flashing side Iaps shall be 4 inches minimum.
Fasteners to structural supports shall be at every valley for sheet end
supports and at every other V valley for intermediate supports. Siding
and flashing fasteners shall be at 12-inch maximum spacing. Formed
flashing sha.l have a minimum bend radius of 1/16 inch.
All aluminum surfaces in contact with concrete shag: be back painted with
a heavy coat of bituminous paint. Keep aluminum from direct contact with
ungalvaniaed structural steel by means of an asphalt impregnated tape.
Closures shall be installed wherever required to prevent oirds and animals
from entering the reservoir.
dluminc,a sheets shall be stored on end in a dry place to avoid condensation.
They shall be kept clean of materials whit! might cause staining such as
mud, concrete, cement, lime and strong chemicals.
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Specifications
6.0 STRUCTURAL STEEL AND ROOF JOISTS
6.10 Materials
All structural steel shall conform to nSTM-A7 for structural grade.
Gpen web roof joists shall be Bethlehem "S" series as fabricated by
,rc Melding Manufacturing Co., Seattle, or approved equal, and shall
conform to the Steel joist Institute requirements and have current
approval of the Steel Joist Institute. The Contractor shall furnish
evidence of such approval, if rtquired.
Arc welding electrodes shall conform to the American Welding Society
Specification's latest edition.
6.20 Fabrication
Shop drawings shall be submitted for t.,e approval of the Engiueer. Shop
drawings shall give all the necessary information and details for the
fabrication, erection, and finishing of the structural steel members
and roof joists and shall be based on A.I.S.C. Specifica.ions. Shop
connections shall be welded.
Structural steel units, roof joists and accessories shall be hot dip
zinc galvanized after fabrication as per Seattle City Light Company
stanuards. Materisl and workmanship at all times shall he subject, tc
the inspection of the Engineer. The Contractor shall allow full
facilities for shop inspection.
6.30 Erection
Handling and erection shall conform to the A.I.S.C. specifications and
code of standard practice for the structural steel members ann to the
Steel loibt Institute requirements for the open web .foists.
iRoo. oists shall be connected to the steel bearing plates at the
supports by two 1/2-inch stud bulls.
Bridging shall consist of continuous horizontal 1/2-inch round bars,
one bar at top chord and one bar at bottom chord, attached by welding,
or W equal mechanical means at the locations shown on the drawings.
Touch up all abrasions of galvanized surfaces with approved zinc
chromate primer and paint.
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Specifications
5.20 Fabrication (contd.)
All pertinent provisions of ;;ection 3.0 of these specifications shall
apply to the prestressed girders.
Inspection by the Engineer of the plant, materials and workmanship,
before and during fabrication of the girders is required. The Contrac-
tor shall give proper notice and allow full facilities for this inspec-
tion.
5.30 Identification and Marking
All prestressed girders shall be plainly marked to indicate their
'':cation and orientation in the structure. Identification marks
shall be duplicated on the planing plan.
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5.40 Erection and joining -
Prestressed girders shall be kept in an upright position at all times }.
and lifted by means of the lifting loops. After installation on the `1
bearing pads the girders shall be positioned true to line and PILMb. q
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The top reinforcement at the column joints shall be connected by well- 1
ing with backup steel angles to secure continuity in the joined
girders. The ,joint shall be completed with cast-in-place concrete as
specified in paragraph 4.50. ' f _,t'i
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specifications
5.0 PRESTRESSED CONCRETE. GIRDERS
5.10 Materials
Prestressed concrete shall have a minimum compressive strength of 6000 psi
at 28 days and of 4800 psi at the time of transfer of stresses.
Pretension steel shall be 3/8-inch seven-wire strands, uncoated and
stress-relieved, conforming to ASTM A416.57T. Post-tendon steel shall
be uncoated, stress-relieved, high-carbon round wires conforming to i
ASTM A421.58T.
Unprestre:sed reinforcing steel shall be intermediate or hard grade bars
deformed ii accordance with ASTM A305.
Concrete and grout admixtures shall be approved by the Engineer. Calcium
chloride admixtures shall not be permitted.
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The bearing pads for the end supports shall be neoprene rubber, 5/8-inch
thick minimum of the dimensions shown on the drawings.
5.20 Fabrication
The girders shall be fabricated in a plant having previous experience on
comparable structures and approved by the Engineer.
Fabri ition drawings shall he submitted for approval. The drawings shall
show all the structural features of the girders, the method of Drestresa-
ing, and post-tensioning, the strand release sequence, the steel inserts
and the lifting loops. 'they shall also show the size, location and
number of strands and wires.
The manufacturer shall submit to the Engineer certified copies of tests
on each day's concrete and on each lot of steel used for the girders'
fabrication. The manufacturer shall also furnish certificates on all
prestressing operations including tension and elongation of steel.
The size of the gird-,rs shall be as shown in the drawings with steel
location tolerance t1/4 inch, cross section dimer„ional tolerances of
:1/8 inch, lenath tolerance =1/4 inch. Add 0.008 inch per foot of p
length of the girders to compensate for the shortening due to prestress C
and shrinkage.
Steel plates 1/2 inch thick, or dowels for support of roof joists shall
be set on the girder extrados as shun on the drawings. `p
Lifting lcops provided at the ends of the girders shall be of the same 4
size, material and strength as prestressing strands. They shall have a
lifting angle of 4.io minimum and shall extend to within 3 inches clear of
the bottom of the girder. The ends of the prestressing steel shall be
recessed in the girder, and the recess filled with a waterproof compound
and covere,, with mortar.
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Specifications
4.0 PRECAST CONCRETE (.NITS
4.10 Scope
The work covered by this section includes the fabrication an,. installation
of precast concrete columns and struts.
All provisions of Section 3.0 of these specifications shall apply to precast
concrete except as specified hereafter.
4.20 Details
Fabrication and placing drawings shall be submitted for approval. All
urtails of jointing, inserts and anchors shall be as shown on the plans. f
Fabrication tolerances shall be; main reinforcement location '- 1/4-inch. -
cross section t 1/8-inch, length ~ 1/4-inch.
4.30 Curing 'AM
Curing by steam or other accepted process may be employed to accelerate the srhardening of tileconcrete andto reduce the required time of curing "provided that the compressive strength ,d the concrete at the time of r „�!
erection be at least 2,500 pni. -
4.40 Identification and Marking
All precast concrete units shall be plainly marked to indicate the top of
the member and its location and orientation in the structure. Identification
mart.: shall be duplicated on the placing plan.
4.50 Erection and Joining a ,:
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Precast units shall be so stored, transported and placed that they will not ,„t tw ;•. �i S
be over or f.am aged. Precast concrete members shall be braced and
supported during erection to insure proper alignment and safely, and Such "
bracing and support shall be maintained until there are adequate permanent
connections. The top rein` -ement
The top reinfc-cement shall be connected by welding as detailed on the
drawings. All welding of reinforcing bars shall : e perf xmed by webers
qualified by tests as prescribed by the American Welding Society. Each
cospleted connection shall be inspected and approved by the Engineer before
filling the joint with cast-in-place concret-. i
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The size of aggregate for the cast-in-place joints shall be 3/4-such a
maximum ind the slump 3-inch maximum.. p
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The roughened surfaces cf the precast members shall be coated with cement
slurry immediately before placing the fresh concrete for the joint.
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Specifications
_ .30 Placing and Finishing Concrete (contd.)
Expansion joints shall be made of 3/4 preformed expansion joint filler
sealed with hot poured asphaltic compound similar to the existing joints
sealer.
Roughening of the existing concrete slabs where required shall as accomplish-
ed by chipping hammer. The roughened surfaces shall have undulations
approximately 1/4-inch in de,th.
The chemical compound for bonding tt, new concrete steps to the •xisting
slope slabs shall be Chem Seal C5 2707 as manufactured by the (]rem Seal
Ce:.:oration of ,;merica. The bonding compound shall be mixed and appliec
st.ictly according to the manufacturer's recorsmendat ions.
3.40 Mis .ellaneous Embedded Steel Items
Steel plates 81' x 81' x 1/2" thick with 1/2-inch round bar anchors shall be
set at the top of the end walls for supporting and connecting the roof joists
as shown in the drawings.
Door frames set in the concrete wall shall be made of 8-inch steel channel
with 1/2-inch anchors at 2 feet o.c. and l" x 5/8" steel door stop.
All exposed surfaces of the steel items shall be painted with 1 coat of red
lead-linseed oil primer and 2 finish coats of oil paint.
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specifications
3.0 REINFORCED CONCRETE
3.10 Scope
The work covered by this section includes all cast-in place core rete for
column footings, girder supports at curb, abutments, end walls and con-
crete steps. Miscellaneous embedded steel items are also included, a
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1.20 Materials
Con rete: Portland cement concrete shall be proportioned with not less
t than 5-1/2 sacks of cement per cubic yard. a
Aggregates shall be clean, hard and free of weak or deleterious particles.
C.arse and fine aggregates shall be proportioned to secure a plastic
ta. -kable mix with 4-iach slump maximum. The concrete shall have a
cc..ipressivc strength of not less than 3,000 psi at 28 days.
One set of three cylinders will be taken by the Engineer from each days,
pour for testing conformance to these requirements. Any concrete found
deficient shall be removed and replaced without cost to the City.
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Reinf��orcin : The reinforcing steel shall be intermediate or hard grade
bar�rmed in accordance with ASTM-A 305. Minimum lap for reinforcing
bars shall be 24 diameters but not less than 12 inches. Bars shall be
securely fastened in place and at the designated spacing. The Contractor
shall submit placing drawings for the reinforcing steel showing dimensions,
bar schedules and bending details for the approval of the Engineer. '
Details shall be in accordance with the A.C.I. Code.
3.30 Placing and Finishing Concrete
Forms shall be of strong material firmly braced and supported, true to
line and grade as slump in the drawings and tight to prevent loss of
grout. Surfaces that will be permanently exposed shall be formed with 3/4- -
inch waterproof plywood. Chamfer all corners with beveled strips. Any
excess excavation underneath footings -hall be filled with lean concrete
to the proper grade. All water shall be removed from the excavation before
placing concrete.
Forms shall be clean and reinforcing steel shall be free from rust, scale
and oil.
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No concrete shall be placed without prior approval of the forms and of the
reinforcing by the Engineer. Concrete shall be placed in forms without
segregation and vibrated wit, mechanical vib=ators.
Newly placed concrete shall be prot- -te6 apv and properly cured.
Remove forms after concrete has properly c below grade forms be-
fore bac::filling. Cut ties 1 inch back uf d surfaces and fill,
patch and finish surface pits, gravel pock^t *••.- ..,.: an/ other
defect as directed by the Engineer.
Construction joints shall be located as shown or the drawings. ::onstruction
joints in the end walls shall have shear keys and he finished with V edges.
The construction joints in the new walls shall match the existing curb
joint.
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