ML13317A216
| ML13317A216 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 01/11/1965 |
| From: | BECHTEL GROUP, INC. |
| To: | |
| Shared Package | |
| ML13317A213 | List: |
| References | |
| NUDOCS 8207130528 | |
| Download: ML13317A216 (7) | |
Text
SPECIFICATION FOR CONCRETE BLOCK MASONRY AT SAN ONOFRE NUCLEAR GENERATING STATION, UNIT NO.
1 SPECIFICATION NO.
BSO-112 September 10, 1964 Revised January 11, 1965 JOB 3246 BECHTEL CORPORATION
- VERNON, CALIFORNIA BAC/ek BECHTEL CORPORATION S27ENGINEERS CONSTRUCTORS 8207130528 E20709 SAN FRANCISCO LOS ANGELES PDR ADOCK 05000206 P
SPECIFIC CONDITIONS 3.01 GENERAL A. SCOPE OF WORK: The work covered by this specification consists of furnishing all labor, materials, and equipment, and performing all operations required for the complete installation of concrete block masonry work as indicated on the drawings and specified herein.
- 1. Work Included. The work of this section includes, but is not limited to the following items:
Hollow concrete masonry units.
Special units as required for bond beams, lintels, pilasters, jambs, corners, etc.
Reinforcing steel Installation only of inserts, anchors, bolts, flashing, reglets, expansion joint neoprene seals, pipe sleeves, miscel laneous iron, etc.
Adequate bracing, forming, and shoring Furnishing and installing wall ties, metal lath and grouting appurtenances.
- 2. Work Not Included. The following associated items will be provided by the Contractor:
Inserts, anchors, bolts, seals, reglets, flashing sleeves, etc.
Door and louver frames and the installation
'thereot Foundation dowels and the installation thereof Utilities and facilities in accordance with paragraph 1.07 Stone masonry B. BUILDING CODE: All concrete block masonry, unless specified herein, shall conform with the requirements of the latest edition of the Uniform Building Code. All references herein are to the latest edition thereof.
C. STORAGE:
The concrete block masonry subcontractor shall confine the storage of material, tools, and equipment within the limits and locations assigned by the Contractor.
3-1 BSO-112
3.01 GENERAL (Continued)
D. START OF WORK:
Different portions of the work of the subcon tract are scheduled to begin as tabulated hereinafter. The dates listed are tentative. Actual starting dates shall be established by the Construction Superintendent and the Subcontractor after award of the subcontract.
- 1. Control-Administration Building March 15, 1965
- 2. Fuel Storage Building June 15, 1965 3.. Fire Hose Houses March 1, 1966
- 4. Shop and Warehouse July 1, 1966
- 5. Turbine Area Enclosure Walls July 1, 1966 E. DRAWINGS: The following drawings illustrate the work of this subcontract. Additional drawings will be issued to give more detailed information during the progress of the work.
CONCRETE BLOCK MASONRY Drawing No.
Rev.
Title 567681-0 Turb. Area Enclosure Wall - Plans 567682-0 Turb. Area Enclosure Wall - Elevations and Sections 567683-0 Turb. Area Enclosure Wall - Wall Sections and Details 567689-2 Control -
Administration Bldg. -
First Floor Plan 567690-2 Control - Administration Bldg. -
Second and Third Floor 'Plans 567693-0 Control - Administration Bldg. - Elevations 567694-0 Control - Administration Bldg. - Building Sections 567695-0 Control -
Administration Bldg. - Wall Sections 567698-0 Control - Administration Bldg. -
Locker Room and Toilets First Floor Plan and Details 567676-0 Fuel Storage Building - Plans and Elevations 567677-0 Fuel Storage Building - Elevations and Building Sections 567679-0 Misc. Buildings -
Hose House Plans and Elevations 567714-0 General Drawings -
Door and Window Details 567715-0 General Drawings -
Room Finish Schedule 567892 0
General Notes 567948 0
Heater Support Structure -
Steel Framing Sections and Details -
Sheet 1 568133-5 Fuel Storage Building -
Foundation Plan 568134-
- 2.
Fuel Storage Building -
Plans at El. 20 ft. -0 in.
and El. 42 ft. -0 in.
568135-5 Fuel Storage Building -
Sections and Details-Sheet 1 568138-3 Fuel Storage Building -
Sections and Details-Sheet 4.
568139-2 Fuel Storage Building -
Sections and Details-Sheet 5 568140-4 Fuel Storage Building - Sections and Details-Sheet 6 568141-
- 2.
Fuel Storage Building - Sections and Details-Sheet 7 568145-1 Fuei Storage Building - Roof Framing Plans 3.2 Revised 1/11/65 BSO-112
3.02 EXISTING CONDITIONS. The Subcontractor shall carefully inspect existing construction performed by others for conditions which might ad versely affect the concrete block masonry and report all such items to the Contractor's Construction Superintendent.
The Contractor will be respons ible for having all defective work corrected. The starting of the installation of concrete block masonry of any portion of the work of the subcontract indicates the Subcontractor's acceptance of the conditions of existing work by other trades at that portion, as satisfactory.
3.03 MATERIALS A. GENERAL: All materials shall be new and of the type, quality, and shape suitable for the work shown on the drawings, and in conformance with the requirements specified herein.
- 1. Handling. All materials shall be delivered, stored and handled in a manner to prevent damage by breakage, water or moisture, or the inclusion of foreign particles.
- 2. Packages. Packaged materials shall be delivered in unbroken packages with the manufacturer's name, brand, and applicable data plainly marked thereon.
- 3. Storage. No materials shall be dumped or stored on the ground. Bulk materials shall be stored on a clean surface or platform as required and shall be protected from deterioration and foreign matter.
B. CONCRETE BLOCK shall be hollow load bearing Grade A units conform ing to ASTM C-90,of the size indicated on the drawings.
- 1. Certificate.
The Subcontractor shall submit to the Contractor, duplicate copies of a notarized certificate executed by both the manu facturer and himself, stating that all hollow concrete masonry units delivered to and used in the project meet or exceed the requirements of A.S.T.M. C90.
C. CEMENT shall be Type I Portland Cement conforming to A.S.T.M.
C150.
D. MORTAR shall be freshly prepared and uniformly mixed in the ratio of 1 part Portland Cement, 1/4 part minimum to 1/2 part maximum hydrated lime, damp loose sand not less than 2-1/4 and not more than 3 times.the sum of the volumes of the cement and lime used, and shall conform with A.S.T.M.
C270. Mortar shall attain a minimum compressive strength of 2000 psi at 28 days.
Red Label Suconem admixture shall be added at a ratio of one pint per sack of cement.
E. GROUT shall be of fluid consistency for pouring without segrega tion of the constituent parts.
3-3 Revised 1/11/65 BSO-112
(7.
3.03 n4TERIALS (Continued)
- 1. Grout for spaces having a least dimension of less than 3 inclies shall consist of 1 part Portland Cement and 2-1/4.parts minimum to 3 parts maximum of damp loose sand by volume.
- 2. Grout for spaces having a.least dimension of 3 inches or more shall be mixed in the ratio by.volumes of 1 part Portland Cement, 2 parts minimum to 3 parts maximum damp loose sand, and 2 parts coarse aggregate.
- 3. All grout shall attain a minimum compressive strength of 2000 psi at 28 days.
F. HYDRATED LIME shall conform to A.S.T.M. C207.
G. AGGREGATE for mortar shall conform to A.S.T.M. 0144 and aggregate for grout with A.S.T.M. C404.
H. ADMIXTURE shall be Red Label Suconem.
I. WATER shall be free from deleterious quantities of acids, alkalies, and organic materials.
J. REINFORCING shall be intermediate grade steel conforming with A.S.T.M.
A15. 'Bars -shall be deformed in accordance with A.S.T.M.
A305. All reinforcing shall be clean and free of loose rust scale or any coatings that will -reduce bond except where specifically required.
3.04 WORKMANSHIP A. GENERAL. All masonry shall be laid true, level, plumb, and in strict accordance with the drawings and details, by workmen exper ienced in the trade.
Units shall be accurately cut to fit around all penetrations as required and any necessary patching shall be neatly done to match adjoining work. Extreme care shall be taken to avoid visible grout and mortar stains.
B. UNITS shall be sound, dry, clean and free from cracks or spalling when placed. Wetting units prior to placing shall not be permitted except in hot dry weather when the units are warm to the touch and then the surface only may be.wetted with a light fog spray.
C. MIXING of mortar and grout shall be done by placing one-half of the water and sand in the operating mixer, then adding the cement, lime, and the remainder of the sand and water. After all ingredients 3-4 Revised 1/11/65 BSO-112
3.04 WORKMANSHIP (Continued) are in the mixer they shall be mechanically mixed for not less than three minutes. Any mortar not used within 1-1/2 hours from the initial mixing time shall be discarded.
D. BONDING. Bonding pattern shall consist of running or stacked bond as indicated on the drawings.
Top of foundation shall be cleanwith laitance removed and aggregate exposed before starting masonry. All intersecting walls and corners in stack bond shall be bonded by the use of steel ties at 24 inches on center maximum. Corners, at running bond, shall have a standard masonry bond by overlapping units and shall be solid grouted.
E. JOINTS. All exterior joints shall be tooled concave except con tinuous vertical joints. The continuous vertical joints shall be raked 3/8 inch deep then tooled concave. All interior joints shall be filled flush then sacked to produce a dense surface without sheen when painted.
Joints generally shall be 3/8" with full mortar coverage on face shells and on webs surrounding cells to be filled.
F. REINFORCING bars shall be straight except where bends occur, around corners and as detailed. Bars shall be lapped 30 bar diameters minimum at splices and shall be separated one bar diameter or wired together.
G. GROUTING. Reinforcing steel shall be secured in place and inspected before grouting begins.
Vertical cells to be filled shall have vertical alignment to maintain a continuous unobstructed cell area of not less than 2 x 3 inches. Cells containing reinforcement shall be solidly filled with grout and pours shall be stopped 1-1/2 inches below the top of a course to form a key at pour joints.
The tops of unfilled cell columns under horizontal beams shall be covered with metal lath or special bond beam units employed. All bolts, anchors, etc. shall be solidly grouted in place, and spaces around openings, knock-out panels, and built-in items shall be filled solidly with grout or mortar.
- 1. Low lift grouting method shall be employed with pour heights limited to heights of four feet or less.
Clean out holes shall be provided in all cells containing vertical reinforcement and mortar projections or droppings shall be washed out of the grout space and off reinforcement prior to grouting.
3.05 TESTS.
Specimens of mortar and grout shall be prepared for test ing by the Contractor as required by the General Notes of Drawing No.
S20-567892. Such specimens will be tested by and at the expense of the Contractor. Work installed with mortar or grout of less than the speci fied requirement shall be.removed and replaced at the expense of the Subcontractor.
3-5 Revised 1/11/65 BSO-112
3.06 INSPECTION. All work of this subcontract will be subject to continuous inspection by the -Contractor or Owner.
3.07 CLEAN-UP. At the conclusion of each unit of the work, the Sub contractor shall clean all masonry, remove all scaffolding and equipment used and remove all debris and surplus material from the premises. Cleaning of surfaces shall include the use of a 10% maximum solution of nuriatic acid when and as directed by the Contractor.
3-6 Revised 1/11/65 I S-112