HomeMy WebLinkAboutEngineer Report-Stem Walls 11.18.2013CONSULTING
Mechanical &
Structural Engineering
Design & Project Management
File: G 13070-5-2002-0
November 18, 2013
Mr. Robert Anderson
Middle Fork Project Manager
Encana Oil & Gas (USA) Inc.
143 Diamond Ave
Parachute, CO 81635
Dear Mr. Anderson,
MPA Consulting Engineers, Inc.
823 Grand Avenue. Suite #200
Glenwood Springs Colorado 81602
Tel (970) 928-8536
Email don.howanick@mpa-glenwood.com
As requested, MPA Consulting Engineers conducted a site inspection of the rebar placement for the stem walls
for the Middle Fork filter/manifold building on November 13, 2013. The inspection was limited to the stem
walls and pilasters prior to placementof concrete and included measurements taken on site to verify
dimensional compliance with the design drawings and visual inspection of the formwork.
The building is approximately 66 feet long by 45 feet wide, and the stem wall goes around the perimeter of the
building. The top of the perimeter stem wall is approximately 3-1/2 feet above the floor slab around the
building, and will be used to support the floor steel and floor grating.
Dimensions were verified for the stem walls and embed plates to the extent possible. Some of the walls and
embed plates were inside of forms and were difficult to measure, but the walls appeared to be as per the design
drawings. Please refer to Appendix A for photos taken during the site inspection.
Dimensions were in compliance with the design drawings, and formwork appeared to be properly installed.
Inspection of the stem wall rebar verified the formwork and rebar placement is in accordance to the design
drawings and is acceptable.
Please call with any questions or comments.
Sincerely,
MPA Consulting Engineers, Inc.
J97/f4Uftf2
Don Howanick; M.S., P.E.
Principal Structural Engineer
Page 1 of 5
APPENDIX A
PHOTOS TAKEN DURING SITE INSPECTION NOVEMBER 13, 2013
VIEW OF CONCRETE FORMWORK FOR FILTER/MANIFOLD BUILDING
VIEW OF CONCRETE FORMWORK FOR FILTER/MANIFOLD BUILDING
Page 2 of 5
REBAR CAGE FOR CORNER PILASTER
REBAR CAGE FOR CORNER PILASTER
Page 3 of 5
EMBED PLATE WITH HEADED ANCHOR STUDS FOR BEAM CONNECTION
WALL FORMWORK AT SOUTH END OF BUILDING
Page 4 of 5
WALL FORMWORK AT NORTH END OF BUILDING
WAI,1, FORMWORK ON WEST SIDE OF BUILDING SHOWING COLUMN FOOTINGS
Page 5 of 5
COW:WONG ENGINEERS
Mechanical &
Structural Engineering
Design & Project Management
File: GI3070-5-2001-0
November 8, 2013
Mr. Robert Anderson
Middle Fork Project Manager
Encana Oil & Gas (USA) Inc.
143 Diamond Ave
Parachute, CO 81635
Dear Mr. Anderson,
MPA Consulting Engineers, Inc.
823 Grand Avenue. Suite 41200
Glenwood Springs Colorado 81602
Tel (970) 928.8536
Email don.howanick@mpa-glenwood.com
As requested, MPA Consulting Engineers conducted a site inspection of the rebar placement for the stem wall
footings for the Middle Fork filter/manifold building on November 6, 2013. The Middle Fork filter/manifold
building is located approximately 10 miles north of Parachute, Colorado at the EnCana Middle Fork Water
Treatment Facility. -1'he building will he used to enclose filters, piping, valves, and other equipment for the
facility. The inspection was limited to the lower sections of the stem walls prior to placement of concrete and
included measurements taken on site to verify dimensional compliance with the design drawings and visual
inspection of the formwork.
The foundation is approximately 66 feet long by 45 feet wide. The perimeter stens wall has a continuous
looting that varies in width at different locations from 30 inches wide to 48 inches wide. Spread footings for
the primary structural building columns are integral with the continuous stem wall footings and arc formed by
widening the stem wall footings at the column locations. The spread footings at the corners are 4 feet 6 inches
by 4 feet 6 inches square, footings along the east and west walls are 7 feet by 7 feet square, and footings along
the north and south walls are 5 feet 6 inches by 5 feet 6 inches square.
Dimensions were verified for the continuous footings under the stem walls, the corner spread footings and the
spread footings that arc along the walls. The interior footings and the upper walls were not formed yet, and
will be inspected at a future date. Please refer to Appendix A for photos taken during the site inspection.
Dimensions were in compliance with the design drawings, and formwork appeared to be properly installed.
Inspection of the lower stem wall rebar verified the formwork and rebar placement is in accordance to the
design drawings and is acceptable.
Please call with any questions or comments.
Sincerely,
MPA Consulting Engineers, Inc.
1.1
Don flowanick; M.S., P.E.
Principal Structural Engineer
Page 1 of4
APPENDIX A
PHOTOS TAKEN DURING SITE INSPECTION NOVEMBER 6, 2013
CONTINUOUS STEM WALL FOOTING AND INTEGRAL COLUMN FOOTINGS ALONG THE WEST
WALL
Page 2 of 4
SPREAD FOOTING ALONG STEM WALL
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Page 3 of 4
STEM WALL FOOTING ALONG Lor WALL
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Page 4 of 4