HomeMy WebLinkAboutS-2263031. Construction Safe:,
The contractor shall take all necessary precautions to protect the public and prevent nuisances while
perfori^ ; c.mstruction work on this project. Contractor shall provide temporary bracing for the structure
and structural components until all fi ^al connections have been completed in accordance with the plans.
2. Existing Lift:. ,jtian �Ad Utilities
a. Existing Lift Station: During construction the contractor shall provide temporary bracing, provide for
normal operation, and provide access to the existing lift station until the proposed lift station is
operational and oparoved in writing by the Owner.
b. All Utilities: Existing utilities indicated anywhere on the drawings have been plotted from the best
information available to the Engineer. The source of information generally consists of construction
records, utility locates, and other data obtained verbally from officials associated with the particular
utility. Owner and Engineer do not guarantee nor assume responsibility for the accuracy of this
information. It is understood that other above ground and underground facilities not shown on the
drawings ma; be encountered during the course of the work. The contractor shall verify the tr.e and
correct location of existing utilif., ; to avoid .iamage or disturbance. The contractor shall repair all
damaged utilities immediately.
3. Construction Standards
All materials, workmanship, and construction shall conform to the construction drawings, technical
specifications, U.B.C. (current edition), City of Renton Standard Plans & Specifications, and the
APWA /DOT standard specifications (1996 edition).
4. Pre-construction Conference
A pre— construction conf ^rence and twenty —four hour notice will be required pric- to starting Phosc 2 —
lift station construction.
5. Permits and Inspection
a. Permits: The contractor shall secure all necessary permits prior to starting construction. The City of
Renton will obtain all City Building Permits. See specifications for further information regarding permits.
b. Inspection: The contractor shall obtain all building department i ispections during construction. Some
of the inspection will be performed by a representative of the City of Renton. The contractor shall
notify the representative 24 hours in advance of any backfilling or covering of construction. Concrete
construction, precast concrete erection, structural steel fabrication and erection (including field welding
and high strength field bolting) shall be supervised in accordance with Section 306 of the Uniform
Building Code and the Project Specifications by a qualified testing agency designated by the Engineer.
The Engineer shall be furnished with copies of all inspection reports and test results.
6. Ma?ntaining Lift Station Operation
The existing lift station shall not be taken out of service until the proposed lift station has been
completed, tested, and approved in writing by Owner. A temporary pumping system can be installed
during construction to allow for construction for the proposed lift station to be completed. The
contractor shall provide a plan to the Owner for approval that details the proposed method of keeping
the lift station operational during the construction work. Installation of the temporary pumping system
shall not begin until written approval has been obtainer; from the Owner.
7. Dewatering
a. Dewaterina: The contractor shall determine the scope, type, size, quantity, method of installation,
operation, and removal of the dewatering system necessary to keep the excavation site dewatered to
stabilize the soils for construction. The method must meet the guidelines listed in the specifications.
b. Dewatering Discharge: The contractor shall discharge water from the dewatering system in accordance
with the requirements of state and local regulations and the requirements of these plans and
specifications. At no time shall silt laden water be discharged from the site into streams, rivers, or
lakes.
8. Contractor Initiated Changes
Changes shall be submitted in writing to the Engineer for approval prior to fabrication or construction.
Changes shown on shop drawings only, will not satisfy this requirement.
9. Design Loading Criteria
Roof Snow Load 25 psf
Mechanical Units Weights Furnished by Manufacturer
Wind Load 80 mph, Exposure "C"
Earthquake Zone 3, Rw = 6
Allowable Soil Bearing Pressure 2000 psf
UBC Occupancy Group B — 4
UBC Construction Type 5N
Lot Area = 9015 sq ft
Zoning = Residential
Building Area = 245 sq ft
Maximum capacity = Not Applicable
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10. Shop Drawings
Drawings for reinforcing steel, precast concrete, structural steel, and roofing shall be submitted to the
Engineer for review prior to fabrication of these items. Dimensions and quantities are not reviewed by the
Engineer. The purpose of providing shop drawing submittals to the Engineer by the Contractor � to
demonstrate to the Engineer that the Contractor understands the design concept by indicating which
materials they intend to furnish and install and by detailing the fabrication and installation methods they
intend to use. If deviations, discrepancies, or conflicts between shop drawing submittals and the contract
documents are discovered, either prior to or after shop drawing submittals are processed by the
Engineer, the design drawings and specifications shall control and shall be followed.
The Contractor is required to provide all construction staking on this project including the preparation of
complete as —built records.
11. Concrete
a. Concrete shall be mixed, proportioned, conveyed: and Faced in accordance with UBC Section 2604 and
ACI 301. Strengths at 28 days and mix criteria shall be as follows:
28 Day Max. Min, Cement Content
b. Type of Construction Strength (f'c) Slump Per Cubic Yard
1. Slab on grade, topping slabs,
Slab on stair landings and treads 3000 psi 5" 5 36 sacks
2. All structural concrete except walls 3000 psi 5" 5 36 sacks
3. Concrete walls 3000 psi 5" 5 'fz sacks
c. Concrete Protection (Cover) for Reinforcing Steel shall be as follows:
Footings and other components permanently exposed to earth, 3"
Formed surfaces not perm. exposed to earth (#6 bars or larger), 2" & (ij5 bars or smaller), 1 -1/2"
Column ties and beam stirrups, 1 -1/2"
Slabs and wails (interior face), 3/4"
J. Reinforcing Steel shall conform to ASTM A615 (including Supplement St).
Grade 60, fy = 60,000 psi. Reinforcing Steel shall be detailed (including hooks and bends) in accordance
with ACI 315 -80 and 318 -89. Lap splice all reinforcement as shown on the Plans. Comer bars shall be
provided at all wall and footing intersections. No bars partially embedded in hardened concrete shall be
field bent unless specifically detailed or approved by the structural Engineer. Welded Wire Fabric shall
conform to ASTM A -185. Adjacent mats must be lapped a minimum of 8" at sides and ends.
e. Mix Design may be changed if a concrete performance mix is submitted to the Engineer and the
Building Department for approval two weeks prior to placing any concrete. The concrete performance mix
shall include the amounts of cement, fine and coarse aggregate, water and admixtures, as well as the
water cement ratio, slump, concrete yield, and substantiating strength data in accordance with UBC
2604(c).
12. StructuralSteei
a. Structural Steel Design, Fabrication, and Erection shall be based on the AISC "Specification for the
Design, Fabrication, and Erection of Structural Steel for Buildings," latest edition, plus all referenced
codes.
b. Structural Steel shall conform to the following requirements:
c. TVOe of Member ASTM Specification F�
A. Plates, Shapes, Angles, and Rods A36 36 KSI
B. Anchor Bolts (embedded in masonry or concrete) A307
C. Connection Bolts (3/4" round, unless shown otherwis ^) A325 —X
All A -325 Connection Bolts shall be approved self load indicating (such as LeJeune tension control baits,
etc.) and shall be installed in strict accordance with the Manufacturer's published recommendations.
d. Expansion Bolts into concrete sholi be "Red Head" wedge anchors and threaded expansion insert into
concrete shall be "Red Head" non — drilling anchors, both as manufactured by Phillips Drill Company, or
approved equal. Install in strict accordance with the Manufacturer's published recommendations, including
minimum embedment requirements.
e. Cold— Formed Steel Framing Members shall be of the shape, size, and gouge shown on the Plans.
Provide minimum section properties indicated. All cold— formed steel framing shall conform to the AISC
"Specifications For The Design of Cold— Formed Steel Structural Members ".
f. Drive Pins and Other Powder Actuated Fasteners shad be standard velocity type as manufactured by
Ramset Fastening Systems or an approved equivalent in strength and embedment. Install in strict
accordance with the Manufacturer's published recommendations.
g. Welding shall be in accordance with A.LS.C. and A.W.S. Standards and shall be performed by W.A.B.O.
certified welder using E70 XX electrodes. Only prequolified welds (as defined by A.W.S.) shall be used.
UTILITY CONTACT PERSONNEL
UTILITY
UTILITY NAME
NAME
PHONE NUMBER
TELEPHONE
US WEST COMMUNICATIONS FRANK FOREST
(206) 345 -2968
WATER
CITY OF RENTON
RAY SLED
(425) 235 -2646
GAS
PUGET SOUND ENERGY
RIB HOWE
(253) 395 -6858
POWER
PUGET SOUND ENERGY
HIB HOWE
(253) 395 -6858
SEWER & STORM CITY OF RENTON
RON SCHAFFER
(425) 235 -2585
UTILITY ONE -CALL
1 -(800) 424 -5555
13. Erosion and Sedimentation Control
a. the implementation of the Erosion and Sedimentation Control (ESC) Plan and the construction,
maintenance, replacement, and upgrading of these ESC facilities is the responsibility of the Contractor
until all construction is approved.
b_ The boundaries of the clearing limits shown on these Plans shall be clearly flagged in the field prior
io construction. During the construction period, no disturbance beyond the flagged clearing limits shall be
permitted. The flagging shall be maintained by the Contractor for the duration of construction.
c_ The ESC facilities shown on these Plans must be constructed in conjunction with all clearing and
grading activities, and in such a manner as to insure that sediment laden water does not enter the
drainage system.
d_ The ESC facilities shown on these Plans are the minimum required for anticipated site conditions.
During the construction period, these ESC facilities shall be upgraded (E.G., additional sumps, relocation
of ditches and slit fences, etc.) as needed for unexpected storm events.
e. The ESC facilities shall be inspected daily by the Contractor and maintained as necessary to ensure
their continued function.
1- Any area stripped of vegetation, including roadway embankments, where no further work is anticipated
for a period of 15 days or more, shall be immediately stabilized with the approved ESC methods (E.G.
seeding, mulching, netting, erosion blankets, etc.).
g. Stabilized construction entrances and wash pads shall be installed at the beginning of construction
and maintained for the duration of the project. Additional measures may be required to ensure that all
pared areas are kept clean for the duration of the project.
h_ Where seeding for temporary erosion control is required, fast germinating grasses shall be applied at
an appropriate rate (E.G. annual or perennial rye applied at approximately 90 pounds per acre).
i. Where straw mulch for temporary erosion control is required, it shall be applied at a minimum
thickness of two inches.
ROL�L 1;6;9 F�R 299.
r_
REVISED TO CONFORM
TO CONSTRUCT ON RECORDS
MARK MILLER 10/24/00
RH2 ENGINEERING INC. DATE