Lite-Span - Aluminum Covers Brochure

www.hallsten.comLite-Span Aluminum Covers®HALLSTENHALLSTENINDUSTRIAL • MARINE • ENVIRONMENTALSACRAMENTO, CA (800) 473-7440INDUSTRIAL • MARINE • ENVIRONMENTALSACRAMENTO, CA (800) 473-7440C O R P O R A T I O NC O R P O R A T I O NALUMINUM STRUCTURES BYALUMINUM STRUCTURES BYQuality•Integrity•IngenuityQuality•Integrity•Ingenuity“...the most innovative and cost effective aluminum cover on the market, period”Lite-Span®H A L L S T E N C O R P O R A T I O N • 1 - 8 0 0 - 4 7 3 - 7 4 4 0 • W W W . H A L L S T E N . C O MH A L L S T E N C O R P O R A T I O N • 1 - 8 0 0 - 4 7 3 - 7 4 4 0 • W W W . H A L L S T E N . C O Mallsten Corporation's Aluminum Lite-SpanCovers provide gaseous emissions containment forclarifiers, sludge holding tanks, bio-towers, aerationbasins and any number of other storage vessels found inprojects of environmental importance.Innovative and cost effective, the Hallsten CorporationAluminum Lite-Span Cover represents a breakthroughin modular design and structural efficiency. HallstenCorporation pioneered the use of extruded aluminumfor cover construction. Although imitated, the patenteddesign of the Hallsten Corporation Aluminum Lite-Span Cover has never been equaled. Simply put, there isno “or equal”. The Hallsten Corporation AluminumLite-Span Cover is the most innovative and cost effectivecover on the market, periodA TRADITION OF INNOVATIONThe Hallsten Corporation Aluminum Lite-Span Coveris the result of a focused effort to design an aluminumcover specifically intended for environmentalapplications. The design effort has resulted in over adozen United States Patents. These patents not onlycover the primary structural design of the HallstenCorporation Aluminum Lite-Span Cover but also manyof the unique features found only on this cover system.Included in these features are the Gear Hinged AccessHatch Panel and the Double Seal Gutter. The patentedGear Hinged Access Hatch Panel allows any individualpanel on a cover system to become a fully opening accesshatch. This effectively allows for a cover system thatprovides total access to the tank below. The Double SealGutter provides a patented continuous double seal forirregular or damaged concrete often found in basinretrofit installations. Both of these features are onlyfound on Hallsten Corporation Aluminum Lite-SpanCovers. The modular structural design allows HallstenCorporation to construct covers of any size required onprojects of this type.•••••••Air TightVisually AppealingStructurally SuperiorChemical ResistantEnergy SavingMaintenance FriendlyEasy To InstallAluminum CoversSTRUCTURALLY SUPERIORThe patented design of the Hallsten Corporation AluminumLite-Span Cover is structurally superior to any competingcover. Each modular panel can be individually constructed toprovide for high load pedestrian paths and working areas. OnlyHallsten Corporation can provide a cover with sufficientstrength to withstand concentrated loads in excess of 1000pounds without permanent deformation. Surface dishing fromconcentrated load over-stressing, so common with bent metalor inferior component based covers, is eliminated with theHallsten Corporation Aluminum Lite-Span Cover system.The panel and beam configuration allows Hallsten Corporationto design cover structures with extremely high distributed loadcapacity. The modular configuration provides for unlimitedgeometric options. Covers can be configured in any shape orsize; circular, rectangular or irregular.VISUALLY APPEALINGThe low profile of the Hallsten Corporation Aluminum Lite-Span Cover provides for a very clean aesthetic appearance. Eachcomponent of the system has been designed with an eyetowards this aesthetic. A camber is designed into every cover toassure proper drainage of rainwater. This camber can beincreased or decreased to vary the aesthetic appearance. Thestandard mill finish of the aluminum surface componentsincludes a ribbed texture that disguises the unwanted metalappearance common with bent sheet metal covers. Optionally,the cover can be sandblast finished or anodized.AIR TIGHTOnce installed, the patented double interlocking deckcomponent combined with interlocking beams form asubstantially air tight structure. Our unique fabricationtechniques and the close design tolerances assure that gases andodors are safely contained. Polymer seals are used betweenadjoining panels and at the cover perimeter. These replaceableseals allow the thermal expansion and contraction of the coverwithout compromising the integrity of the joints. Our uniquehatch and penetration details provide minimal leakage throughthese normally troublesome components.HALLSTENHALLSTENINDUSTRIAL • MARINE • ENVIRONMENTALSACRAMENTO, CA (800) 473-7440INDUSTRIAL • MARINE • ENVIRONMENTALSACRAMENTO, CA (800) 473-7440C O R P O R A T I O NC O R P O R A T I O NALUMINUM STRUCTURES BYALUMINUM STRUCTURES BYQuality•Integrity•IngenuityQuality•Integrity•IngenuityCHEMICAL RESISTANTThe Hallsten Corporation Aluminum Lite-Span Cover isfabricated entirely of 6061–T6 alloy corrosion resistantaluminum extrusions. Every seal used between adjoiningpanels is of a corrosion resistant polymer. Even the patentedconnector between the beam and the panel is a structuralpolymer that is chemical resistant and will not weaken orcorrode. A mechanical and replaceable Santoprene seal isolatesthe cover perimeter from the concrete or steel tank wall. Nofoam tape or caulk is used.ENERGY SAVINGA flat cover, when used with odor control units such asscrubbers and other air handling equipment significantlyreduces energy costs. By reducing the volume of the enclosedgases, the size of blowers, fans, ducts and scrubbers can bereduced with a proportional savings in power consumption.This creates an overall savings, both in initial construction costand operation. If required, the Hallsten CorporationAluminum Lite-Span Cover can be provided with insulation tominimize heat losses in thermally sensitive processes.MAINTENANCE FRIENDLYThe modular design of the Hallsten Corporation AluminumLite-Span Cover makes maintenance substantially easier thanour competitors bent metal or inferior component basedcovers. The Hallsten Corporation Aluminum Lite-SpanCover's modular sections can be easily removed because thereare no corroded sheet metal screws, frozen nuts or wedged sealsto hinder access. Each panel can be lifted by hand with only theforce of its weight unlike some of our competitors units thatrequire special lifting equipment to pry each panel loose. EachHallsten Corporation Aluminum Lite-Span Cover is as easy toremove as it is to install assuring total access to processequipment. An optional temporary handrail system is availableto protect maintenance workers.The Hallsten Corporation Aluminum Lite-Span Coverincludes an integral non-skid surface. Every panel and beam,regardless of position or load capacity, incorporates this surface.Slip resistance is critical to the safety of all personnel.EASY TO INSTALLThe installation of bent metal and inferior component basedcovers is labor intensive and demands intricate field assembly.By combining fewer parts with modular panel design, HallstenCorporation is able to reduce installation costs significantlyover competitor's designs. This results in a tremendoussavings, not only during initial installation, but also in long-term maintenance. A cover that is initially easy to install is alsoeasy to remove and reinstall by plant maintenance personnelshould the need ever arise.H A L L S T E N C O R P O R A T I O N • 1 - 8 0 0 - 4 7 3 - 7 4 4 0 • W W W . H A L L S T E N . C O MH A L L S T E N C O R P O R A T I O N • 1 - 8 0 0 - 4 7 3 - 7 4 4 0 • W W W . H A L L S T E N . C O MThe combination of superior structural design, unique features and easy installation makes the Hallsten Corporation AluminumLite-Span Cover the most cost effective cover system available. Structural efficiency, born as a result of the rigorous competitionfound in municipal projects, results in a design that maximizes performance while considering the bottom line cost to construct.Efficient and cost effective, the HallstenCorporation Aluminum Lite-Span Cover is truly aninnovation in structural technology. This uniquesystem, the result of years of development, has beenawarded numerous United States Patents. Eachcomponent has been carefully designed to assuremaximum performance. Unique manufacturing and assemblytechniques, including the use of specialized adhesives, provide theoptimal use of aluminum's special physical properties. This proventechnology is a direct descendent of the weld less aluminum structural systemdeveloped and patented by Hallsten Corporation for use in the rugged marine environment. With proven performance since 1966,the quality of Hallsten Corporation engineering has passed the test of time.The Hallsten Corporation Aluminum Lite-Span Cover utilizes the efficiencies and simplicity of modular design. Although eachcover is individually engineered, each shares a family of common components. This allows Hallsten Corporation to manufacture thecover system in a factory environmentemploying assembly line techniques andbatch processing. The primary structuralcomponents, the beams, are sized anddesigned using computer analysis to optimize structural efficiency for each cover. The stacked beam assembly technique provides theability to individually optimize each beam on every unique cover structure. Along with the patented Gear Hinged Access HatchPanel, deck penetrations and other cover accessories are designed and constructed as an integral part of the cover structure. Deckpenetration kits can be field installed to assure that there are no mistakes in the coordination of the trades. Course of constructionchanges can be easily accommodated with this combination of modular factory construction and field installable accessories andpenetrations. The Hallsten Corporation Aluminum Lite-Span Cover system has been designed and is manufactured with real worldconstruction in mind.Efficient design results in cost savings. Savings are realized not only in the initial cost ofthe cover but also in the installation and maintenance. The Hallsten CorporationAluminum Lite-Span Cover is less expensive to install and maintain because it has;No expensive threaded structural fasteners or rivetsNo special labor-intensive installation or removal techniques or equipmentNo independent support system to install or assembleNo specially trained personnel needed to install or remove the coverBottom line, the Hallsten Corporation Aluminum Lite-Span Coveris less expensive to purchase, install and maintain.®EFFICIENTCOST EFFECTIVE••••SPEC — BID — BUILD, COMPETITIONMAKES US COST EFFECTIVEHALLSTENHALLSTENINDUSTRIAL • MARINE • ENVIRONMENTALSACRAMENTO, CA (800) 473-7440INDUSTRIAL • MARINE • ENVIRONMENTALSACRAMENTO, CA (800) 473-7440C O R P O R A T I O NC O R P O R A T I O NALUMINUM STRUCTURES BYALUMINUM STRUCTURES BYQuality•Integrity•IngenuityQuality•Integrity•Ingenuitygeometric configurations; square, round and irregular. Thisoriginal patent has been supplemented with over a dozenadditional patents that have added features and accessories tothe original tank cover structural system.Hallsten Corporation, in partnership with EnviroQuip ofAustin, Texas, has developed and been awarded a United StatesPatent for a cover system with integral air distribution for theaeration of wastewater. This AirBeam cover integrates theinnovative TransMax aeration system of EnviroQuip into theAluminum Lite-Span Cover. The beams of the cover structurebecome the air distribution plenums for the aeration system.Additionally, the air-metering orifice of the EnviroQuipaeration system is located above the cover surface. This locationmakes the diffusers truly non-clogging and extremelyaccessible. Aeration system maintenance can be performedfrom the slip resistant deck of the cover surface.Hallsten Corporation has developed and patented a modularbiofiltration support system for the construction of largeBiofilters used in the elimination of odors for waste treatmentprocesses. The Bio Floor modules can be quickly assembled toform a biofilter cell of any width and length. The system assuresthe even distribution of air emitted through the floor withminimal head losses. The floor system supports heavy wheelloads for the use of equipment to service the media beds.Hallsten Corporation has also developed and patented aModular Containment System For Hazardous Materials. Likethe Biofilter the Containment System, primarily used for thesecondary containment of potentially hazardous materials, iscomprised of polyethy lene components . Theseinterconnectable berm members can be configured to formvirtually any desired containment perimeter.Hallsten Corporation has established a reputation for ourunique ability to create products that employ modularstructural systems. These products allow Hallsten Corporationto engineer specific structures utilizing a family of predesignedcomponents. The result is high performance, efficientstructures at very competitive prices. Hallsten Corporationcontinues to provide design-build structures to a variety ofindustries. In addition to covers for wastewater and watertreatment plants, Hallsten Corporation provides aluminumand steel structures for marine and industrial applications.Typical of these are marine access gangways, floating docks andstructures, industrial mezzanines, stairways and man ways,conveyor crossovers and bridging structures as well as steeltruss bridges for pedestrian and light vehicular use.®Hallsten Corporation has developed a full line of structuralaluminum products. These products are based on a structuralsystem that has evolved through our experience in the designand fabrication of metal structures since 1966. These variousproducts are used in marine, industrial and environmentalapplications. The basis for the structural system is a unique setof interlocking aluminum components. The use of thesecomponents provides a structural system that is very versatile,can be used in a variety of structures and provides unmatchedstrength and durability.In the early 1970's Hallsten Corporation pioneered the use ofaluminum components for the construction of structures to beused in a marine environment. The extreme corrosionresistance of aluminum in combination with the inherentstrength of aluminum extrusions provided the basis for amarine structural system that provided unmatched quality andvalue. These early structures were fully assembled with weldedconnections. Hallsten Corporation continued to refine thedesign of these structures and by the 1980's had eliminated themajority of the welds required to assemble the components.The welded connections were replaced with details thatincluded specialized adhesives as well as nonthreadedmechanical connectors. Where welds were retained, the weldswere designed to minimize the effect of fatigue induced in theheat effected areas. These welds were located in areas withminimal cyclical loading. Additionally, the remaining weldedconnections were designed with longer individual welds, whichtend to be more fatigue resistant. The weldless design proved tobe highly fatigue resistant as well as much more structurallyefficient than a fully welded design due to the elimination ofthese heat effected areas and their corresponding allowablestress reductions.The weldless structural design resulted in the issuance of UnitedStates Patent number 5,050,361, “Deck Structure”. Thisstructural system is comprised of panels that include theprimary structural beam section as a frame member for thedecking system. When assembled, the structure becomes self-framing as well as self-supporting.The application of this structural system as a tank cover becameevident to the engineers at Hallsten Corporation. A specificdesign was developed and subsequently United States Patentnumber 5,325,646, “Tank Cover Structure”, was awarded. Ourdesign provides for a cover system with integral support beamsas well as a panel system that allows for spanning capacity tomeet the needs of any field application. This structural systemhas been used to construct tank covers of all sizes and in allHALLSTEN CORPORATIONA Technical OverviewH A L L S T E N C O R P O R A T I O N • 1 - 8 0 0 - 4 7 3 - 7 4 4 0 • W W W . H A L L S T E N . C O MH A L L S T E N C O R P O R A T I O N • 1 - 8 0 0 - 4 7 3 - 7 4 4 0 • W W W . H A L L S T E N . C O MTHE MOST EFFICIENT AND COST EFFECTIVE ALUMINUM COVER ON THE MARKETHALLSTENHALLSTENINDUSTRIAL • MARINE • ENVIRONMENTALSACRAMENTO, CA (800) 473-7440INDUSTRIAL • MARINE • ENVIRONMENTALSACRAMENTO, CA (800) 473-7440C O R P O R A T I O NC O R P O R A T I O NALUMINUM STRUCTURES BYALUMINUM STRUCTURES BYQuality•Integrity•IngenuityQuality•Integrity•IngenuityREPLACED• Concrete• Fiberglass• Checkerplate• Bent Sheet MetalHallsten Aluminum Lite-Span Covers Replace:®ConcreteFiberglassCheckerplateBent Sheet Metal••••THE HALLSTENADVANTAGESPECIFICATION FOR ALUMINUM ACCESS COVERSIII. QUALIFICATIONS1. MANUFACTURER:2. ERECTOR:3. WELDERS:Shall be acompany specialized in providingengineered aluminum covers forwastewater treatment tanks/troughsfor at least ten (10) years. Whenrequested by the Engineer, submitwritten evidence to show experiencequalifications and adequacy of plantc a p a b i l i t y a n d f a c i l i t i e s f o rperformance of contract requirements.Regularly engagedfor at least ten (10) years in the erectionof aluminum covers for wastewatertreatment tanks.Qualified within thepast two (2) years in accordance withAWS.detailed shop drawings. Preliminarydrawings shall be stamped by covermanufacturer's PE. Final Drawings andcalculations shall bear the stamp oflocal state PE if required.Manufacturer's standard guarantee.A letter of certification signed andsealed by a registered Professional Civil(b)(c)Engineer confirming that thealuminum cover is in fullcompliance with the plans andspecifications including any testingprovisions included therein.H A L L S T E N C O R P O R A T I O N • 1 - 8 0 0 - 4 7 3 - 7 4 4 0 • W W W . H A L L S T E N . C O MH A L L S T E N C O R P O R A T I O N • 1 - 8 0 0 - 4 7 3 - 7 4 4 0 • W W W . H A L L S T E N . C O MII. ENGINEERINGI. GENERAL1 . SPECIFICATION:2. SCOPE OF WORK:T h i sspecification is for a fully engineered,substantially airtight, aluminum coverstructure comprised of panels, andbeams as manufactured by HallstenCorporation, P.O. Box 41036,Sacramento, California 95841, (800)473-7440. This specification shall beregarded as a minimum standard fordesign and fabrication.Furnish alllabor, materials, and equipment toprovide a complete, installed system offixed and removable, custom fit, flataluminum covers. The Tank Coversystem includes cover panels, structuralsupports, and attaching hardware.A submittal shall be provided to theengineer prior to the beginning offabrication. The submittal shallinclude:Complete structural calculationsshowing the governing stresses inall members and connections, and(a)IV. PERFORMANCE1. SPAN:2. WIDTH:3. DISTRIBUTED DESIGN LIVELOAD AND DEFLECTION:4. CONCENTRATED LIVE LOAD:5. DESIGN STRESSES:6. SKID RESISTANCE:The clear span length of thecover shall be as noted in the scope ofwork.The inside width of thecover shall be as noted in the scope ofwork.All structural components shall bedesigned to support the dead weight ofthe structure, plus a live load of 50pounds per square foot of surface. The maximum deflection ofany component under this load shall not exceed L/240 of thespan of that component. In no event shall the dead loaddeflection exceed the rise of any component in order to avoidsurface ponding.The structuralcomponents shall be designed to support a 400-pound load ona 6" X 6" area located anywhere on the surface of the structurewithout permanently deforming the tested area.All allowable design stresses instructural aluminum shall be in accordance with the"Specifications for Aluminum Structures" for building-typestructures by the Aluminum Association.The cover shall possess an integralnon-skid surface and no exposed area of cover system widerthan one inch shall be without ribs/non-skid surface. Thealuminum-decking surface of the structure shall be Hallsten'sDeck Slat, which is ribbed to provide an aggressively non-skidsurface. The edges of adjacent deck slats shall double interlockso that the slats shall act together. The decking surface shall bemanufactured form 6061-T6 alloy. The Manufacturer of thenon-skid surface shall demonstrate in writing satisfactoryperformance for a minimum period of 10 years in thewastewater industry for the intended purpose. This surface shallnot be achieved by the use of paint, adhesive tapes, sand blastingor any other meanse other than an extruded process.Panels shall be fabricatedentirely of 6061-T6 corrosion resistant aluminum extrusions.Every panel to beam connection shall be chemical resistant andwill not weaken or corrode and will interlock. A mechanical andreplaceable Santoprene seal shall isolate the cover perimeterfrom the concrete wall. No foam tape or caulk shall be allowed.Thealuminum cover shall be composed ofpanels and beams. All panels shallinterlock with the adjoining beam andpanels without the use of threadedfasteners. Uplift of each panel will beresisted with the use of an integral latchsystem. The weight of an individualpanel shall not exceed 150 pounds.Each removable panel shall be easy toremove without disruption of adjacentpanels and the lifting force requiredshall not exceed the dead weight of thepanel.7. CHEMICAL RESISTANCE:8. CONFIGURATION:HALLSTENHALLSTENINDUSTRIAL • MARINE • ENVIRONMENTALSACRAMENTO, CA (800) 473-7440INDUSTRIAL • MARINE • ENVIRONMENTALSACRAMENTO, CA (800) 473-7440C O R P O R A T I O NC O R P O R A T I O NALUMINUM STRUCTURES BYALUMINUM STRUCTURES BYQuality•Integrity•IngenuityQuality•Integrity•IngenuityVI. FABRICATION &WORKMANSHIP1. WORKMANSHIP:2. EXPERIENCE:3. PREPARATION FOR WELDING:4. WELDING PROCEDURES:The quality ofworkmanship shall be equal to the bestgeneral practice in modern structuralfabr icat ion shops. Workmanship,fabrication, and shop connections shall bein accordance with the latest edition ofANSI/AWS D1.2 "Structural WeldingCode - Aluminum".The manufacturermust furnish adequate evidence of aminimum of ten (10) years of ongoingexperience in the manufacture of similarstructures.All components to be welded shall be free ofdirt, grease, and other contaminants andshall fit up properly for sound welding.Surfaces to be welded may not be cut withoxygen. Sawing, shearing, or machiningmay be used.Allwelding shall be with an inert gas shield arcprocess. Machine settings shall bedeveloped with test welds of the samematerial, alloy and geometry as the workpieces and samples will be testeddestructively.6. ACCESS HATCH PANELS:Access to any location under the covershall be gained through integral gearhinged access hatches. The AccessHatch Panels shall have the identicalproperties as the rest of the aluminumcover including loads, deflection andslip resistance specifications. Theaccess-hinged panels shall be the fullpanel width. The length of the accesspanel shall be clearly indicated ondrawings. Hinged panel componentsincluding hinges, decking and liftinghandles shall be extruded 6061-T6.While in the closed position the hatcheswill be completely flush thereforeposing no tripping hazard. In the openposition the panel shall lie flat on thecover and will not need a hold opendevice.7. HANDLES: Handles shall be anintegral flush mounted aluminum andincorporated into the non-skid deck slat.H A L L S T E N C O R P O R A T I O N • 1 - 8 0 0 - 4 7 3 - 7 4 4 0 • W W W . H A L L S T E N . C O MH A L L S T E N C O R P O R A T I O N • 1 - 8 0 0 - 4 7 3 - 7 4 4 0 • W W W . H A L L S T E N . C O MV. MATERIALS1. ALUMINUM:2. WELDING ELECTRODES:3. FASTENERS:4. STEEL ACCESSORIES:5. SEALS:All aluminum usedin the fabrication of cover shall be alloy6061-T6. All plate shall be alloy 6061-T6. Material shall be new and of topquality.Welding shall be with electrodes of analloy, which shall produce welds withstrength and corrosion resistantcharacteristics compatible to the basemetal.All fastenersbetween aluminum components shallbe stainless steel or structural plastic.Aluminum shall be isolated fromdissimilar materials by means of astainless steel spacer or an elastomericisolator. Beams and panels shall befastened to concrete using stainlesssteel drill in place anchor bolts.Nocarbon steel components shall be used.A mechanical andreplaceable Santoprene seal shall isolatethe cover perimeter from dissimilarmaterials such as concrete and steel.No foam tape or caulk shall be allowedfor isolation of cover system.VII. TESTING1. LOADS:2. PREQUALIFIED SHOPTESTING:After installation the covers t ruc tu re wi l l be t e s t ed forconformance with the deflection limits.A load of 400 pounds will be placed asdirected by the Engineer and themaximum deflection created by theload will be measured.MANUFACTURERshall perform a prequalified shop airtightness test and certification for thecover components proposed. This testshall be performed in accordance withthe “Procedural Standards for Testing,Adjusting and Balancing of Environment System” as publishedby the National Environmental Balancing Bureau (NEBB) oncover components of not less than 80 square feet. Said test shallbe conducted and witnessed by a NEBB certified technician.The method of testing, test apparatus and proposed contents ofthe test report shall be submitted to the ENGINEER forapproval. Subsequent to the receipt of ENGINEER'S approval,the MANUFACTURER shall set up testing protocol andschedule the test. The MANUFACTURER will provide theENGINEER with at least 72 hours notice prior to thescheduled test. A report of the test shall be prepared by thecertified technician and shall be sealed with the NEBB seal. Thereport shall include a description and illustration of the testcomponents, a description and illustration of the test apparatusand a report of the results. The cover shall maintain an airintrusion leakage rate not to exceed 0.2 cfm per square foot at anapplied negative pressure of 0.2 inches of water column for a 5-minute duration.VIII. DELIVERY & INSTALLATION1. DELIVERY:2. STORAGE:3. INSTALLATION:4. CONTRACTOR INSTALLATION:5. O & M MANUAL:Delivery of the components of the structureshall be made to a location nearest the site that is accessible toover the road trucks, unless otherwise specified.The manufacturer shall be responsible forjobsite storage of the delivered components. The componentsshall be stored off the ground on level surface in such a manneras to prevent damage.The manufacturer shall furnish suchpersonnel, tools, equipment, and materials as required to installthe cover using the recommended procedure.The covermanufacturer can provide installation instructions, on sitesupervision, and inspection if desired.The manufac-turer shall provide an O & M Manualthat includes drawings, maintenanceinstructions, and removal andreplacement instructions for theinstalled cover.HALLSTENHALLSTENINDUSTRIAL • MARINE • ENVIRONMENTALSACRAMENTO, CA (800) 473-7440INDUSTRIAL • MARINE • ENVIRONMENTALSACRAMENTO, CA (800) 473-7440C O R P O R A T I O NC O R P O R A T I O NALUMINUM STRUCTURES BYALUMINUM STRUCTURES BYQuality•Integrity•IngenuityQuality•Integrity•IngenuityHALLSTENHALLSTENINDUSTRIAL • MARINE • ENVIRONMENTALSACRAMENTO, CA (800) 473-7440INDUSTRIAL • MARINE • ENVIRONMENTALSACRAMENTO, CA (800) 473-7440C O R P O R A T I O NC O R P O R A T I O NALUMINUM STRUCTURES BYALUMINUM STRUCTURES BYMAILING ADDRESS:P.O. Box 41036Sacramento, CA 95841Tel: (916) 331-7211Fax: (916) 331-7223PLANT ADDRESS:6944 34th StreetNorth Highlands, CA 95660Quality•Integrity•IngenuityQuality•Integrity•Ingenuitywww.hallsten.com