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Home My WebLink AboutXR2023-2456 - Alternative Material & Methods (4)CITY OF NEWPORT BEACH x�-ZC23 COMMUNITY DEVELOPMENT DEPARTMENT 100 Civic Center Drive I P.0 BoxDIVISION 17 8Newport Beach, CA 92658-8915 www.newl)ortbeachca.gov 1 (949) 644-3200 CASE NO.: REQUEST FOR MODIFICATION TO PROVISIONS OF TITLE 9 (FIRE CODE) OR TITLE 15 (BUILDING CODE) OF THE NEWPORT BEACH MUNICIPAL CODE (See Reverse for Basis for Approval) Fee 306 ® REQUEST FOR ALTERNATE MATERIAL OR METHOD OF CONSTRUCTION (See Reverse for Basis for Approval) (Fee $306) For above requests, complete Sections 1, 2 & 3 below by printing in ink or typing. JOB ADDRESS: SITE ADDRESS: 439 HARBOR ISLAND DR., NEWPORT BEA Owner MICHAEL AND RUTH FLETCHER Address 290 WOODED VIEW DR. LOS GATOS, CA Zip 95032 Daytime Phone (q08 ) 961-8125 FOR STAFF USE ONLY Plan Check # of Stories Occupancy Classification Q3j Use of Building gj'� Project Status rAll Ip # of Units Construction Type Verified by - No. of Items / Fee due DISTRIBUTION: Owner Plan Check Petitioner ❑ Inspector ❑ Fire ❑ Other PETITIONER: Petitioner ROBERT ROMINE (Pefrtloner to be archrfxf or a glneerJ Address 4SHETLAND TRABUCO CANYON, CA Zip 92679 Daytime Phone (949 ) 888-9511 Email: ROBt7o GREGORY-DESIGNCOM CMC 603.9 & 603.12; CRC R322.1.6 EXCEPTION Petitioner's Position PRESIDENT Signature CA Professional Lic. # M-23903 � Date: 02/07/24 FO`,RR STAFF USE ONLY DEPARTMENT ACTION: In accordance with: yi CBC 104.11/CFC 104.9 X (Alternate materials & methotls) ElConcurrence from Fire Code El CBC 104.10/CFC 104.8 (CBC Modification) Official is required. Approved ❑ Disapproved ❑ Written Comments Attached Request (DOE cDate son any fire Protection requirements, 5 Request (DOESitg-Nsen the structural integrity 'he Request is: Granted ❑❑ Denied (See reverse for appeal information) Granted (Ratification required) Print Name Posio4IFF B I ❑ING TTICiAL Date n z - £?.. -Zqs� ®� 2024 7Y OF NFyral 8'sq �-�• vv�.B�CN APPEAL OF DIVISION ACTION TO THE BUILDING BOARD OF APPEALS (See Reverse) (Signature, statement of owner or applicant, statement of reasons for appeal CASHIER RECEIPT and fling fees are required.) NUMBER: GL — 01 S'6!1 3 - Fonns\modil 08/21123 www.icc es-orna orn 118001423 6587 Effective Date: December 2023 This listing is subject to re-examination in one year. ----- 1 (562) 699-0543 A Subsidiary of the international Code Council® DIVISION: 23 00 00 — HEATING VENTILATING, AND AIR- For underground applications and at the request of the CONDITIONING (HVAC) Section: 23 31 16.16 — Thermoset Flberglass-Reinforced FSK liner. the standard duct is available without the Class 1 Plastic Ducts REPORT HOLDER: SPUNSTRAND INC. WWWsPu' nstranUcom EVALUATION SUBJECT: SPunstrand Standard and Insulated Underslab Ducts 1. EVALUATION SCOPE Compliance with the following codes: 2021, 2018, 2015, 2012, 2009 and 2006/ntemationa1 Residential Codes (I RC) 2024, 2021, 2018, 2015, 2012, 2009 and 2006 Intematronal Mechanical Coda's(IMC) • 2024, 2021, 2018, 2015, 2012, 2009 and 2006 Uniform Mechanical Codes (UMC) 2022. 2019, 2016, 2013, 2010 and 2007 California Mechanical Codes (CMC) Compliance with following standards: ICC-ES LC 1014-2016 PMG Listing Criteria for Underground Plastic Air Ducts UL 181 (11- Ed.) Standard for Safety for Factory -Made Air Ducts and Connectors NSF Protocol P374-2010, Air Duct Thermal Efficiency Performance 2. USES The Spunstrand Standard and Insulated Underslab ducts described in this report are used as Class 1 air ducts with a maximum rated positive pressure equivalent to 10-inch water column, a maximum rated negative pressure of 4. a -Inch water column and a maximum velocity of 2,500 feet per minute. 3. DESCRIPTION This report covers duds that are manufactured in 4-inch through 86-inch diameters. The 4-inch through 54-inch ducts are available in 20-foot lengths and the larger sizes in 10-foot lengths. The standard (non -insulated) duct is constructed with filament -wound, polyester resin4mpregnated, continuous fiberglass strands wound over an inner liner of a Underwriters Laboratories Inc. (UL) listed Class 1 duct liner identified as Foil -Scrim -Kraft liner. Also available is an insulated duct using the same UL listed Class 1 dud liner. The insulation is identified as isocyanurate foam and having a 1.9-pcf density and a Class 1 flame -spread classification when tested in accordance with ASTM E 84. The same filament -wound manufacturing method described above, with sandwich -type construction providing fiberglass reinforced plastic on both sides of the insulation, is used for the insulated ducts. All duct sizes listed in this report were evaluated for the following: R—Value— lue Duds with insulation values of R-4, R-6, R-71 R-81 R-10 and R-12, when tested in accordance with ASTM C518, are standard products that are covered in this evaluation and listing. Thermal Distribution Efficiency ?DE7 When tested to NSF Protocol P374, the Spunstrand Standard, non4nsulated dud, in 10 inches in diameter and greater, exhibited equivalent TDE to a spiral steel reference dud surrounded on all sides with R-10 rated insulation. Straight sections of the dud are joined by using a 6-inch-wide internal sheet metal sleeve of No. 26 gage to No. 22 gage (0.0187 inch to 0.029e inch thick) galvanized steel, depending upon the duct size. The sleeve is first screw -attached to one section of pipe to be joined using no fewer than three equally spaced sheet metal screws for ducts through 24-inch diameter, 5 screws for duds through 36-inch diameter and 16 screws for ducts larger than 36 inches. A bead of Presetite No. 579.6 Waterproof Mastic is applied around the circumference at the end of the duct. The adjacent section of duct is slipped over the sleeve and pressed tightly against the mastic, forming a waterproof seal. Sheet metal screws then secure the second section of dud to the sleeve. Finally, the joint is wrapped with Nashua Type 357 duct closure tape. As an altemate to the Nashua 357 duct tape, a single wrap of 4-inch-wide Polyken 260 Foilastic tape with P-29 primer provided by Spunstrand Inc. may be used. If ground water causing any hydrostatic loading is possible or anticipated, the mastic and tape portions of the above instructions must be replaced by a rigid fiberglass joining system. Surfaces of the dud to be joined must be clean and Property sanded prior to application of the fiberglass joining materials. Manufacturer's specific instructions for application of this material must be strictly adhered to. At the engineer's Option, couplings may be used in lieu Of intemal sheet metal sleeves and wet lay-up joints_ Couplings 2 - 24 inches in diameter shall be filament wound to a minimum thickness of the duct diameter's structural layer. Listings orc aatto br connrurdes rzprrsmnng.sthractar mryath¢r amrburrs not sprnfirn(l} addretred nor ore yrrr• rob¢ ajtbr subjra ojrhe axdng or o recommendodan joy in rite Th:re is no xnrmrrn by IP dfi a14o dd Srnire. LLC cO�'v¢das an rndonrmmr ` arhermatrerin drtrlisting, or ¢smum'poAmr cm ¢ndby the lining. TPns or mipb'rd ntm um•fmd,'n or i�� A17116 8 CoPyright C 2023 ICC Evaluation Service, LLC. All rights reserved. °age 1 of 2 ESR-1681 I Most IMdely Accepted and Trusted Page 2 of 2 An internal seat shall keep the coupling from sliding past center and align both sides equally. Sealing adhesive is to be a 2-part epoxy -based system that cures permanently and water -tight. Couplings have been factory tested to an internal design pressure of 5 psi for one hour. To confirm a 5 to 1 safety factor, couplings were tested by an accredited laboratory to a pressure of 25 psi and showed no signs of leakage or failure after 5 minutes. Couplings are manufactured by Spunstrand under two (2) trade names: Strand-Tite — for use with underslab FSK, TDE and all insulated ducts. Strand -Lock — for use with SMACNA thermoset industrial ducts Standard fittings similarly constructed, such as elbows, wyes, tees, crosses, branches, and concentric and eccentric reducers are available. Attachment procedures of these fittings are similar to those for straight sections. Trenches are dug for the duct on the desired locations, allowing for cover around the duct for a minimum of 4 inches of pea gravel or other select fill material approved by the building official. After all joint connections are made as described above and the duct system is lowered into position, backfilling is completed, and the concrete slab is poured on top. The top of the duct should be a minimum of 21/2 inches and a maximum of 5 feet below the concrete slab, 4. INSTALLATION 4.1 General: Installation must be in accordance with the manufacturer's published installation instructions and Section 603 of the International Mechanical Code®(IMC). Ducts evaluated in this report shall only be installed underground or embedded and shall not be used in exposed applications. 4.2 Duct Sizing: Ducts must be sized in accordance with Section 603.2 (Duct Sizing) of the International Mechanical Codee(IMC). 5. CONDITIONS OF USE Spunstrand Standard and Insulated Underslab Ducts described in this report comply with, or are suitable alternatives to what is specified in, those codes listed in Section 1 of this report, subject to the following conditions: 5.1 Ducts must be installed in accordance with manufacturers published installation instructions. 6.2 The maximum temperature for air conveyed by the ducts in this report shall be 150 °F (66°C) at the discharge of the unit entering the system. 5.3 Ducts shall have a minimum slope of 1/8 inch per foot (10.4mm/m) to allow drainage to a point provided with access. 5.4 The design of concrete slabs with embedded air duct pipe is beyond the scope of this report. 5.5 Underground air duct located below the base flood elevation shall be designed and installed to resist hydrostatic and hydrodynamic loads and stresses, including the effects of buoyancy, during the occurrence of the flooding to the design floor elevation, in accordance with Section 603,13 (Flood hazard areas) of IMC. 5.6 The maximum depth Below Flood Elevation at which the duct can be installed, based on testing in accordance with Section 4.3.2 of LC1014. 5.7 Spunstrand Standard and Insulated Underslab Ducts and Couplings are under a quality control program with annual surveillance inspections by ICC-ES. 6. IDENTIFICATION 6.1 Each piece of The Spunstrand Standard and Insulated Underslab Ducts must be permanently and legibly marked at intervals of not greater than 10 feet (3.0 m) with following items: • Manufacturer's name or trademark The rated air velocity The rated negative and positive pressure ICC-ES PMG mark of conformity. 6.2 The report holder's contact information is the following: SPUNSTRAND INC. 3731 N. Ramsey Rd., Suite 105 Coeur d' Alene, ID 83815 www.sounstrand.com Re: Spunstrand duct design for hydrostatic conditions Mike Schaeffer <margaux56@aol.com> Mon 1/29/2024 9:47 AM To:Kirk Nelson <kirk@spunstrand.com>;caitlin@gregory-design.com <caitlin@gregory-design.com> Cckurt@urbanslab.net <kurt@urbanslab.net>;Aaron Molina <aaronm@spunstrand.com>;dani@gregory-design.com <dani@gregory-design.com>;Nicole Thompson <nicole@brandonarchitects.com> Caitlin, Spunstrand has two different joint systems we recommend for Below Flood Elevation (BFE) applications. All diameters are approved for the butt and wrap wet lay-up method, and from 4" O to 24" H we also offer couplings that are similar to pipe couplings in PVC and some FRP applications. We could not find any test labs that would test external pressures and safety factors we desired for BFE pressures and applications. With the ICC and RADCO we adopted a pipe test procedure as an alternate that would give us a safe working pressure with a 5 to 1 safety factor instead of 2 to 1 as in LC1014. In 65 years of direct bury FRP duct applications, we have not seen any jobsites that exceeded 11' of water column pressures with the top of the duct 6" below bottom of slab, and bottom of duct exceeding 11'6" below bottom of slab. Therefore, we converted the 11.5' of possible water column to 5 PSI and used that as our pressure test parameter. After passing 5 PSI for a minimum of one hour, we tested to 25 PSI for another hour to get the 5 to 1 safety factor. RADCO observed this test for the ICC, and agreed that it held much higher results than the 2 to 1 BFE rating. We reran this test again last week to try out a new putty system for our couplings. We tested a coupling that was sanded on one side and not sanded on the other. This time we tested to 10 PSI for an hour, and then again at 25 PSI with no leaks. After the test we ran it up to 30 PSI, and the non -sanded side developed a pin hole leak, but that is higher than any duct system will ever see and above the 5 to 1 safety factor. We will in our amended instruction continue to suggest sanding the duct end going into the coupling, and the sanded side on the test went up to 60 PSI. Obviously these are much higher pressure than we will ever see on a duct job, but it makes us comfortable in BFE applications. The ICC would be willing to add that our duct complies with the LC1014 requirements with a higher safety factor. I would like to see this more in our market, as you can still see in Blue Duct literature they recommend a test to 2" of WC, which in our estimate is maybe half to a third of it's total capability, and they do not have any published pressure ratings or 3rd party observed testing. I hope that helps, and I will discuss with the ICC how we could adopt this into our report. Please feel free to contact me if you have any questions, Thanks, Mike Mike Schaeffer Presidenrt Spunstrand Inc ph 206-726-8435 cl 206-954-7044 margaux56@aol.com On Thursday, January 25, 2024, 11:49:28 AM PST, caitlin@gregory-design.com <caitlin@gregory-design.com> wrote: Hi Kirk, Thank you for completing these calculations so quickly and for your thorough response. We will incorporate this information in our resubmittal and it should be enough to satisfy the plan checker. For future, the Spunstrand ICC report may need to be updated. As I read the LC1014 and the ICC report, it appears the ICC report is still missing the depth it was tested to below the BFE. LC1014, Section 5.0 for listing recognition states: 5.7 The listing shall state the maximum depth Below Flood Elevation at which the duct can be installed, based on testing in accordance with Section 4.3.2. Section 4.3.2 requires certain parameters for testing but leaves it up to Spunstrand to determine what depth they will test at (see verbiage of 4.3.2 below). This depth should be specifically called ICC report for listing recognition. out on the 4.3.2 For Use Underground, But Below the BFE: For recognition of installation below the BFE, a minimum of four fittings shall be attached to five lengths of straight duct sections in accordance with the manufacturer's installation instructions. The ends shall be sealed. The duct assembly noted shall be externally tested with water to a pressure equivalent to two times the pressure exerted by the depth for which recognition is sought. Water shall not enter the assembly for the 24-hour test period. Thanks, Caitlin Gregory GOM Gregory Design 4 Shetland - Trabuco Canyon, CA 92679 Office (949) 888-9511 10/30/23, 12:42 PM Parcel Report - Newport Beach GIB Assessor Parcel Number: Approximate Lot Size: Council District: Community Association: Refuse Collection Day: Refuse Collection Agency: Sanitation District Area: School District: Special Fire Protection Area: Fire Hazard Severity Zone: Flood Zone: 050 471 08 13,611 SQUARE FEET 5 - NOAH BLOM 439 HARBOR ISLAND DR NE\11FORT BEACH. CA 92660 City Property: TUESDAY NEWPORT BEACH CNB NEWPORT\MESA UNIFIED X - 0.2 PCT ANNUAL CHANCE FLOOD HAZARD AE, B FT Lot: 7 Map Source: Document: 050 471 08 Date: Previous Map Source: TRM_03283 Document: MM_101_33-34 Date: 11/06/1957 Previous Map Source: IRV SUB Document: MM_001_88 Date: 4/13/1899 Planning Documents Building and Public Works Permits Permits: CHECK FOR PERMITS NO Business Improvement District: Leaf Blower Exempt: Water District: NB Water Meter Zone: 2-195 Cable Provider: SPECTRUM Document Information Block: Planning Information General Plan Land Use: RS-D Single Unit Residential Detached Statistical Area: G1 Charter Section 423: NO LAND USE ELEMENT AMENDMENTS Zoning District: R-1 Single -Unit Residential Set Back Map: S-7 Local Coastal Program Coastal Zone: YES Categorical Exclusion Area: NO Coastal Land Use: RSD-A SINGLE UNIT RESIDENTIAL DETACHED - (0.0 - 5.9 DU/AC) Coastal Zoning District: R-1 SINGLE -UNIT RESIDENTIAL Overlay District: First Public Road and the Sea: YES Additional Parcel Related Information Census Tract: 630,05 https://nbois.newr)ortbeachca.aov/aisDub/ParcelRenortPublicldefaultnsnx?LJNIOLJF TAh=944A7(:1R n19 fn SUPPLY DUCT, SIZE AND LOCATION PER MECH FLOOR PLANS FAN COIL, SEE EQUIPMENT SCHEDULE LINED RETURN PLENUM OUTLET (VERIFY WITH MFR.) SEISMIC STRAP TX2"X14' GA. ANGLE, 6" L, SET AT THE TOP i FILTER FRAME FOR MERV 13 AND BOTTOM; OF UNIT. DISPOSAL FILTER ANCHOR TO THE 2X6 DISCONNECT SWITCH E D—STRUCTURAL WALL WITH 3/8" DIA. LAG SCREWS. ATTACH TO AIR HANDLING UNIT REFRIGERANT LIQUID & SUCTION WITH 2 #12 TECS (TYP.) LINES TO HEAT PUMP CONNECT UNDERGROUND 3/4" CONDENSATE LINE (ROUTE UD FRP DUCT TO UNIT WITH ALONG WALL) TO NEAREST J SQ. TO RND. TRANSITION. PLUMBING FIXTURE D 18X18 ACCESS DOOR TO CONDENSATE PUMP, IF REQUIRED DRAINAGE ACCESS POINT INSTALL ABV. B.F.E. OF 8.0 IN DUCT RISER. (ALL EQUIPMENT TO BE ABV. B.F.E.)' SERVICE OUTLET, ABV. B.F.E. BRACKET CONDENSATE PUMP TO FLOOR AND WALL, IF REQUIRED SLAB BY STRUCTURAL NAVD88 D.F.E. +9.0' NAVD88 B.F.E. +8.0'— no _ N o = PORTABLE SUMP PUMP It TO REMOVE WATER UNDERGROUND DUCT. SLOPE BACK - (IF REQUIRED) TO DUCT RISER MIN. eSPUNSTRAND" PER FT. CONCRETE ENCASEMENT AT PEA GRAVEL OR DRY SAND — ALL RECTANGULAR DUCT (4" MIN. ENCASEMENT) -� — UNDERGROUND SPUNSTRAND WEEP FILTER FABRIC AND WATER RING OR LINKSEAL =III —III PROOFING AS REQ. BY SOILS (TYP. ALL CONC. ENGINEER AND WATER PENTRATIONS) PROOFING CONSULTANT. SPUNSTRAND STAND-TITE MOISTURE SENSOR COUPLINGS W/ FRP PUTTY AT ALL S.M. OR SPUNSTRAND FRP TAPS NOTE: I. MAINTAIN CLEARANCES AROUND UNIT AS RECOMMENDED BY THE MANUFACTURER. 2. FINISH SUPPLY AND RETURN PLENUMS TO MATCH FAN COIL. 3. SEE PLUMBING DRAWINGS FOR CONDENSATE PIPING BY PLUMBER. 4. INSTALL ALL UNDERGROUND DUCT PER MANUFACTURER'S RECOMMENDATIONS. I VERTICAL FAN COIL (UNDERGROUND DUCT) SCALE 4 D N N rn O 7 O O 3 STANDARD SPECIFICATIONS FOR SPUNSTRANDO INC. UNDERSLAB AIR DUCT Part 2 - Products 2.01 GENERAL A. Underground ductwork, including fittings, shall be constructed of fiberglass reinforced plastic manufactured by Spunstrand® Inc., 620 North Post Street, Post Falls, ID 83854. 208.777.7444 ph, 208,777.7445 fax. All duct and fittings shall be designed and constructed to meet the applicable requirements of Uniform Mechanical Code, Chapter 6 and be listed with ICC-ES for direct burial application. All ductwork and fittings shall include labels certifying the actual code listings and report number, and shall be installed in strict accordance with the manufacturer's instructions. 2.02 MATERIALS A. Resin - The resin used shall be high grade polyester, tested to meet the requirements of Uniform Mechanical Code, Chapter 6 and suitable for corrosion against all normal soil and moisture conditions. Resin systems with fillers exceeding 5% shall not be approved. 1. Plastic (HDPE/PVC) ductwork and / or PVC coated galvanized steel ductwork shall NOT be acceptable. B. Inner Lining - All duct and fittings shall have a UL listed Class 1 inner liner for both flame spread and smoke developed ratings. C. Structural Layer - The structural layer shall be filament wound of resin and glass to meet the specified working pressures and depth of burial requirements. 2.03 INSULATION A. Underground ductwork shall be factory pre -insulated including all fittings. The duct shall be ICC-ES listed and installed in strict accordance with the manufacturer's instructions. The insulation value of the duct shall be R-8 as selected. Insulation values shall be tested per ASTM C-518 in an independent lab with a minimum of five years experience performing testing to this standard. B. R-values must be tested and approved in accordance with ASTM C518. ANY other test methods will not be acceptable and will be rejected during submittal review. 1. TIDE equivalence" testing is NOT to be accepted. C. For product information please contact your local Spunstrand Rep: Representative: Kurt Polchow Company: Urban Slab Phone: (818) 967-8231 Email: kirtlo urbanslab.net 2.04 ACCESSORIES A. Fittings - Fittings shall be fabricated from straight duct and have the same working pressure and shall also be corrosion and moisture resistant. Reducers shall be filament wound as specified for the duct. B. Joints - Field joints are to be watertight by using Strand-Tite by Spunstrand coupling system. The joints shall be installed in strict accordance with the manufacturer's instructions. This includes thoroughly cleaning and sanding areas to be joined and using manufacturer supplied polyester resin and Strand-Tite couplings. C. Register Boots - Register boots, if constructed of galvanized sheet metal with a flange 620 North Post Street • Post Falls, ID 83854 • 208.777.7444 Dh 208.777 7d45 ra.. secured to the duct with sheet metal screws, must be encased in concrete covering well around the joint. Preferred Option: Underground supply and / or return air plenums shall be made of the same material as the duct. They shall be of one-piece construction including the stub outs for connecting to the ductwork. INSTALLATION INSTRUCTIONS FOR SPUNSTRAND® INC. UNDERSLAB AIR DUCT Part 3 - INSTALLATION 3.01 GENERAL A. Spunstrand@ Inc. duct is a semi -rigid reinforced thermosetting resin product designed to deflect approximately 5% under external load without structural damage. The performance of the duct is affected by the amount of strain introduced into the duct wall from internal pressure, external loads and the resulting deflection of the duct with respect to its wall thickness. B. It is important to recognize the need for care in handling the duct during the installation process and to properly provide uniform support for the duct by carefully placing the backfill material under and around the duct. Large diameter duct will usually require internal support during the backfilling process and until all external soil loads have stabilized. When installed underground, the load of the soil above the duct tends to flatten the duct and make it wider. As the duct tries to widen, the walls push into the soil at the sides developing a resistance that helps support the vertical load. The higher the soil resistance the less the duct will deflect. Proper installation techniques are necessary to prevent excessive deflections and potential duct buckling. C. Heavy Equipment Procedure — Heavy equipment shall not be allowed to pass over the duct without proper bridging. Where heavy floors are anticipated, the floor slab should be reinforced over the duct area or a crown of poured concrete poured over the duct in lieu of backfill material. Where ducts are parallel to a wall or foundation, it should be spaced to provide a minimum of 4" for the backfill material. D. Where the ducts must pass directly under a load bearing wall, reinforcement over the duct may be required. 3.02 TRENCH CONSTRUCTION A. The surface at the bottom of the trench should be continuous, smooth, and free of rocks to avoid point loading on the duct. Where this cannot be accomplished the trench bottom should be over excavated to allow a minimum of 4 inches of bedding material under the duct. B. Trench width should not be greater than necessary to provide adequate room for joining the duct in the trench and for compacting the backfill in the bedding zone and at the sides of the duct. The minimum distance between the duct and the trench is four (4) inches; maximum recommended trench width is twice the diameter of the duct. C. Dewatering should be provided when there is a risk of flooding the trench during installation. Dewatering shall continue from the time the duct is first placed in the trench, until backfill or encasement is completed. Damage can occur when the duct is floated during a water uplift event. D. Water Table Procedure — When water is encountered within the trench zone it should be removed by suitable means and the trench maintained in a reasonably dry condition until the duct has been installed enough and backfill placed to prevent any flotation. The gradation of 620 North Post Street • Post Falls, ID 83854 • 208.777.74" ph 208.777.7445 fax • www.spunstrand.com the backfill in the duct trench shall be such that the fines from surrounding soils will not migrate into the backfill and cause lack of sidewall or foundation support. As an alternative the use of filtration fabric can be considered for this purpose. In either case, the assistance of a soils engineer should be sought. 3.03 JOINING THE DUCT A. Because of its relatively low weight per foot, Spunstrand@ Inc. duct can be joined before lowering into the trench thus minimizing the number of in -trench joints required during installation. Field joints require Strand-Tite couplings by Spundstrand installed in strict accordance with the manufacturer's instructions. This includes thoroughly cleaning and sanding areas to be joined. 3.04 INSTALLATION A. Installation shall be in strict accordance with the manufacturer's instructions including but not limited to the following: duct to be installed in a trench with provision for good drainage and an allowance for a minimum of 4" pea gravel or dry silica sand to completely encase the duct. The top of the duct shall be at least 2 1/2" below the top of the concrete slab. D. Store and handle the duct so as to prevent damage. Carefully inspect each length before installation. If long sections are to be assembled alongside the trench then lowered into Position, the duct run should be supported along its length to avoid strain and potential overstress or buckling of the duct or damage to the joints. Lay the duct in the trench so that it bears evenly on the bedding or bottom of the trench throughout its entire length. Arrows on the duct clearly mark the direction of airflow. A minimum thickness of 2 %" of concrete is recommended where duct protrudes through the concrete. The maximum depth of burial for standard Spunstrand® Inc. underslab air duct allows for 5 feet of backfill cover. Deeper burial is possible; however, your Spunstrand® Inc. representative must be contacted for special recommendations that may be required. If the duct is not underslab it should be below the frost line. If the duct must pass directly under a load / weight bearing wall or under a road, reinforcement over the duct may be required. Again, please contact your Spunstrand® Inc. representative for specific requirements if your application meets these referenced, or any other custom considerations. (See Drawing No. 2 on the following page.) 3.05 BOOT TAKEOUTS (BOOT REGISTERS) A. Use Spunstrand@ Inc FRM register boot encased in concrete per detail in Drawing No. 2 on the following page. 3.06 TESTING A. Contractor to perform 0 leakage pressure test at 4" W.C. prior to backfilling. 620 North Post Street • Post Falls, ID 83854 • 208.777.7444 ph 208.777.7445 fax • www.spunstrand.com Wol- 0m.og No 2 Slab p l!2 mn-n]'ma .'.i-- / �--'.,"• .. 1. \Pea j / 2 5/M Repu Boot aNbterlitwoi egkter gbt ton[rafe C'ocosement for Reclgna Raol, and PNn1,ms fin'n Slob iovel,. ay Wi,d 1l qtm� // �` Spunmontl tLarkt oua IT — — ��Spunslrund fbergbss CucMoh 4 SaM l<'min) 4.01 LIMITATIONS Spunstrand® Inc. underslab duct is rated and code approved for the following: Temperature = 250 degrees continuous Pressure = 10" W.G. Positive, 4.8" W.G. Negative Air Velocity = 2,500 FPM Installation must be in accordance with the published installation instructions. Spunstrand® Inc.must approve any deviation. 620 North Post Street • Post Falls, ID 83854 • 208.777.7444 ph 208.777.7445 fax • www.spunstrand.com 10 Commercial Underslab Duct DIRECT BURIAL UNDERSLAB DUCT Standard Installation Defined Spunstrand® Inc. underslab duct products are versatile in many ways, and can accommodate a variety of field conditions with appropriate engineering and design. This document is intended to provide a snapshot of a standard installation, and jobsite conditions that require a factory or engineering review prior to installation. If Spunstrand® Inc. duct is installed with materials or methods outside of the parameters of a standard installation without factory approval, the factory warranty will be null and void. This document applies to both our insulated and non -insulated underslab round ductwork. Spunstrand® Inc. is designed to be direct buried underneath a concrete slab. The duct is not considered structural, and the concrete slab must be designed to span the width of the duct trench if the slab is expected to bear significant loads, otherwise the slab may crack. The standard depth of burial allows for up to 5 feet of cover over the top of the duct. As our installation instructions state, fill material should be carefully dispersed into the trench around the duct, and dumping full loads of sand or gravel directly onto the duct may result in damage or collapse. A normal trench will accommodate one run of duct. If two runs of duct are going to occupy the same trench area, or if duct runs will cross over each other, the manufacturer must be notified, and special instructions will be provided if necessary. Trenches should have vertical sidewalls of engineered soil to provide support for the backfill material and stabilizing the duct. In some cases, this is not possible, and the manufacturer should be notified. Special instructions will be provided if necessary. Approved Backfill Material Approved backfill materials are pea gravel or dry silica sand. These materials will achieve 95% compaction without the use of mechanical compaction. Rodding and hand tamping are the only approved compaction methods over the top of the duct. A minimum of 4" of pea gravel or dry silica sand must completely encase the ductwork. Spunstrand® Inc. duct is designed to handle hydrostatic loading if all of the above criteria are met. If ground water or high water table may occur in the area the duct is installed, wet joint material must be used as the joining system. Hydrostatic pressure could cause some movement of the duct and use of this joining method will help ensure a rigid system that can withstand these forces. Other non -rigid sealing systems may be water -tight, but could tear if the duct were to move. It is also recommended that the duct be anchored to the slab if the possibility of soil erosion exists. If soil erosion occurs and the duct or the slab is damaged, this is outside the scope of our warranty. Provisions should be made by the engineer or contactor to keep a water table from threatening the building, slab, and ductwork. Concrete Encasement Concrete encasement is not a standard method of installation, but can be accommodated with special provisions. If concrete encasement is being considered, it must be done in two to three lifts depending on diameter and trench conditions, with provisions to prevent floating. Please contact the manufacturer for specific instruction on how to do this without damaging the duct. Duct hold down system for encasement should be designed by a mechanical engineer and confirmed with Spunstrand® Inc. for potential pounds of float / uplift per lineal foot per diameter. Spunstrand® Inc. Specification - 10/2014 Version: 1.3 11 Commercial Underslab Duct Rectangular Plenums, Register Boots and Transitions Rectangular ducts, plenums, register boots and transitions are often provided as part of a system. These items are not approved for direct burial unless special design considerations have been made to withstand the loading. Spunstrand® Inc. assumes these items will all be concrete encased and properly braced during pouring to withstand the loads imposed. If clarification is needed, please consult Spunstrand® Inc. No trucks or equipment may pass over the buried duct without steel plates to bridge the trench area. Equipment driving over the duct may cause cracks or potentially collapse the duct, and will result in a voided warranty. Any installation variations that are not approved by SpunstrandO Inc. will result in a voided warranty for the duct system. Not all installation considerations can be covered in this document, if there are any questions or concerns about the installation, please contact Spunstrand® Inc. for verification. Foundation Wall Penetrations Precautions need to be reviewed by the engineer on record or contact your Spunstranda Inc. representative. Spunstrand® Inc. Specification - 10/2014 Version: 1.3 MECHANICAL SUPPORT SYSTEMS, INC. BELOW GRADE ANCHOR 3600 SUPPORT with Alignment Plate Product Configuration: 300-A/FB Abrasion Shield 2" Formed (Rubber Type) Band Earth Anchor Anchor Option Pat. No. 9,347,587 Option Description: Full 3600 support includes a lower 1800 half -saddle manufactured to O.D. of pipe with welded stem for added strength. Width is determined by saddle diameter. Saddle widths are manufactured in 4", 6", or 8". Metal thickness varies from .1345" to .5" depending on load. Upper attachment is a 16ga GALV. 2" formed band. Saddles are connected with Grade 5 zinc plated nuts and bolts. Provided alignment plate allows for quick installation of 9" to 26" earth anchors. Saddle is supported on 3/4" threaded rods provided and cut to length. Support height is adjustable +/- 3.0". Upper and lower support lined with .0625" rubber type abrasion shield. Nuts and bolts provided. Available in: ASTM A36 Mild Steel, ASTM A630 G90 Steel Sheet Zinc Coated (galvanized), ASTM A480 Stainless Steel Plate and ASTM B209-10 Aluminum Plate i Earth Anchors (Included) W + 2411 1211 min CL Shield (Rubber Type) PATENT PENDING BELOW GRADE CHANNEL 3600 SUPPORT Description: Full 3600 support consists of an upper and lower 1800 half -saddle manufactured to O.D. of pipe with welded stem for added strength. Width is determined by saddle diameter. Saddle widths are manufactured in 4", 6" or 8". Metal thickness varies from .1345" to 5" depending on load. Saddles are connected with Grade 5 zinc plated nuts and bolts. Provided suspension channel allows for quick installation. Suspension channel secured in place with two (2) 9" earth anchors. Saddles suspended by 1/2" threaded rods provided cut to length. Suspended height is adjustable. Upper and lower saddles are lined with .0625" rubber type abrasion shield. Assembly hardware included. Available in: ASTM A36 Mild Steel, ASTM A653 G90 Steel Sheet Zinc Coated (galvanized), ASTM A480 Stainless Steel Plate and ASTM B209-10 Aluminum Plate Product No. 300-C 0a C rCC".''t"`t rNAlAtTcv-4zv .• '• x 00x a O N +S� kn w LAM O to �D *00 co C dn,a v„ sir w a' O ••� O Ln m OD4 b N , d C ws ,� U 96 � a t0 M O a- ao r °° E y W y p. LLI O t aM • !n n o IA p t La �a p N rl kO M N A v u •y� a'y W ,* � 61 Q 7 ♦; ( U Z s :`+i a a `a! a n M N o "L v Y a kz ( p p O $ g a m m Q '® W L o� N u wo V N^ di O.ry a 2 N 0. Q C .0 �O .0i c u V) Strand -Lock industrial couplings were developed to save labor on prep and install time, and exceed the toughest corrosion conditions. They are highly cor- rosion resistant and leak -tight under extreme hy- drostatic pressures. Strand -Lock is available in sizes 3" 0 up to 24" 0 and have all been designed and tested to 5 PSI with a 5 to 1 safety factor. Our test- ing procedures include 3`d party certifications. .11 The coupling has an internal flange stop that keeps the seating surface centered when a duct is slid into each side. There are no metal or rubber parts that will fail over time in a corrosive environment. It is sealed internally with a 2-part epoxy that we pro- vide which will be as permanent as the duct. The couplings are an upcharge option, but our cus- tomer testimonials will tell the experience of a 50- 75% labor savings, and a greatly reduced chance to leak as opposed to flanges or butt and wrap field joints. Little or no sanding or grinding is needed and most customers will dry fit the entire system and then go back and seal the joints. 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