780 CMR 16.00 STRUCTURAL DESIGN 780 CMR 16.00 Is
780 CMR 16.00STRUCTURAL DESIGN780 CMR 16.00 is unique to Massachusetts780 CMR 1601.0 GENERAL1601.1 Scope. Provisions of 780 CMR 16.00 shallgovern the structural design of buildings, structuresand portions thereof regulated by 780 CMR.1601.2 Massachusetts Building Code for Oneand Two Family Dwellings. Where structuraldesign for buildings covered by the MassachusettsBuilding Code for One- and Two Family Dwellingsis performed by a registered design professional(RDP), said RDP may follow the structural designprovisions of the Massachusetts Basic Building Codein lieu of those in the Building Code for One- andTwo Family Dwellings, and shall follow the BasicBuilding Code for the structural design ofcomponents and systems not addressed in theBuilding Code for One- and Two Family Dwellings.780 CMR 1602.0 DEFINITIONSAND NOTATIONS1602.1 Definitions. The following words and termsshall, for the purposes of 780 CMR 16.00, have themeanings shown in 780 CMR 1602.0. Fordefinitions not contained in 780 CMR 1602.0, seeappropriate sections of ASCE 7.ALLOWABLE STRESS DESIGN. A method ofproportioning structural members, such thatelastically computed stresses produced in themembers by nominal loads do not exceed specifiedallowable stresses (also called working stressdesign).BALCONY. A floor projecting from and supportedby a structure without additional independentsupports.DEAD LOADS. The weight of materials ofconstruction incorporated into the building,including but not limited to walls, floors, roofs,ceilings, stairways, built-in partitions, finishes, cladding, and other similarly incorporated architecturaland structural items, and fixed service equipment,including the weight of cranes. All dead loads areconsidered permanent loads.DECK. An exterior floor supported on at least twoopposing sides by an adjacent structure, and/or posts,piers or other independent supports.DESIGN STRENGTH. The product of thenominal strength and a resistance factor (or strengthreduction factor).DURATION OF LOAD. The period of continuousapplication of a given load, or the aggregate ofperiods of intermittent applications of the same load.8/22/08 (Effective 9/1/08)EQUIPMENT SUPPORT.Those structuralmembers or assemblies of members or manufacturedelements, including braces, frames, lugs, snuggers,hangers or saddles, that transmit gravity load andoperating load between the equipment and thestructure.ESSENTIAL FACILITIES. Buildings and otherstructures that are intended to remain operational inthe event of extreme environmental loading fromflood, wind, snow or earthquakes.FACTORED LOAD. The product of a nominalload and a load factor.FLEXIBLE EQUIPMENT CONNECTIONS.Those connections between equipment componentsthat permit rotational and/or translational movementwithout degradation of performance.GUARD. See 780 CMR 1002.1.IMPACT LOAD. The load resulting from movingmachinery, elevators, craneways, vehicles, and othersimilar forces and kinetic loads, pressure andpossible surcharge from fixed or moving loads.JOINT. A portion of a column bounded by thehighest and lowest surfaces of the other membersframing into it.LATERAL FORCE-RESISTING SYSTEM.That part of the structural system that is consideredin the design to provide resistance to the wind andseismic forces prescribed in 780 CMR.LIMIT STATE. A condition beyond which astructure or member becomes unfit for service and isjudged to be no longer useful for its intendedfunction (serviceability limit state) or to be unsafe(strength limit state).LIVE LOADS. Those loads produced by the useand occupancy of the building or other structure anddo not include construction or environmental loadssuch as wind load, snow load, rain load, earthquakeload, flood load or dead load.LIVE LOADS (ROOF). Those loads produced (1)during maintenance by workers, equipment andmaterials; and (2) during the life of the structure bymovable objects such as planters and by people.LOAD AND RESISTANCE FACTOR DESIGN(LRFD). A method of proportioning structuralmembers and their connections using load andresistance factors such that no applicable limit stateis reached when the structure is subjected toappropriate load combinations.(Also called“strength design”).780 CMR - Seventh Edition379
780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDSTHE MASSACHUSETTS STATE BUILDING CODELOAD FACTOR. A factor that accounts fordeviations of the actual load from the nominal load,for uncertainties in the analysis that transforms theload into a load effect, and for the probability thatmore than one extreme load will occursimultaneously.LOADS. Forces or other actions that result from theweight of building materials, occupants and theirpossessions, environmental effects, differentialmovement, and restrained dimensional changes.Permanent loads are those loads in which variationsover time are rare or of small magnitude, such asdead loads. All other loads are variable loads (seealso “Nominal loads”).LOADS EFFECTS. Forces and deformationsproduced in structural members by the applied loads.NOMINAL LOADS. The magnitudes of the loadsspecified in 780 CMR 16.00 (dead, live, soil, wind,snow, rain, flood and earthquake).NOTATIONS:D Dead load.E Combined effect of horizontal and verticalearthquake- induced forces.F Load due to fluids.Fa Flood load.H Load due to lateral pressure of soil and waterin soil.L Live load, except roof live load, includingany permitted live load reduction.Lr Roof live load including any permitted liveload reduction.R Rain load.S Snow load.T Self-straining force arising from contractionor expansion resulting from temperature change,shrinkage, moisture change, creep in componentmaterials, movement due to differentialsettlement, or combinations thereof.W Load due to wind pressure.P-DELTA EFFECT. The second order effect onshears, axial forces and moments of frame membersinduced by gravity loads on a laterally displacedbuilding frame.PANEL (PART OF A STRUCTURE). Thesection of a floor, wall or roof comprised betweenthe supporting frame of two adjacent rows ofcolumns and girders or column bands of floor or roofconstruction.RESISTANCE FACTOR. A factor that accountsfor deviations of the actual strength from thenominal strength and the manner and consequencesof failure (also called strength reduction factor).SHALLOW ANCHORS. Shallow anchors arethose with embedment length-to-diameter ratios ofless than 8.380SHEAR PANEL. A floor, roof or wall componentsheathed to act as a shear wall or diaphragm.SHEAR WALL. A wall designed to resist lateralforces parallel to the plane of the wall.STRENGTH, NOMINAL. The capacity of astructure or member to resist the effects of loads, asdetermined by computations using specified materialstrengths and dimensions and formulas derived fromaccepted principles of structural mechanics or byfield tests or laboratory tests of scaled models,allowing for modeling effects and differencesbetween laboratory and field conditions.STRENGTH, REQUIRED. Strength of a member,cross section or connection required to resistfactored loads or related internal moments and forcesin such combinations as stipulated by theseprovisions.STRENGTH DESIGN. A method of proportioningstructural members such that the computed forcesproduced in the members by factored loads do notexceed the member design strength (also called loadand resistance factor design).WALL, LOAD BEARING. Any wall meetingeither of the following classifications:1. Any metal or wood stud wall that supportsmore than 100 pounds per linear foot (1459 N/m)of vertical load in addition to its own weight.2. Any masonry or concrete wall that supportsmore than 200 pounds per linear foot (2919 N/m)of vertical load in addition to its own weight.WALL, NONLOAD BEARING. Any wall that isnot a load-bearing wall.780 CMR 1603.0 CONSTRUCTIONDOCUMENTS1603.1 General. Construction documents shallshow the size, section and relative locations ofstructural members with floor levels, column centersand offsets fully dimensioned. The design loads andother information pertinent to the structural designrequired by 780 CMR 1603.1.1 through 1603.1.8shall be clearly indicated on the constructiondocuments for parts of the building or structure.1603.1.1 Floor Live Load. The uniformlydistributed, concentrated, and impact floor liveloads used in the design and where they areapplied shall be indicated. Also, whether live loadreduction has been applied. shall be indicated.1603.1.2 Roof Live Load. The roof live loadused in the design shall be indicated (780 CMR1607.11).1603.1.3 Roof Snow Load. The ground snowload, pg, and the flat-roof snow load, pf, and, ifapplicable, the sloped roof snow load, ps, shall beindicated.780 CMR - Seventh Edition8/22/08 (Effective 9/1/08)
780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDSSTRUCTURAL DESIGN1603.1.4 Wind Load. The following informationrelated to wind loads shall be shown, regardless ofwhether wind loads govern the design of thelateral-force resisting system of the building:1. Basic wind speed (three-second gust), milesper hour (km/hr).2. Wind importance factor, IW, and buildingcategory.3. Wind exposure. If more than one windexposure is utilized, the wind exposures andapplicable wind directions shall be indicated.1603.1.5 Earthquake Design Data.Thefollowing information related to seismic loadsshall be shown, regardless of whether seismicloads govern the lateral design of the building:1. Seismic importance factor, IE, and seismicuse group.2. Mapped spectral response accelerations SSand S1.3. Site class.4. Spectral response coefficients SDS and SD1.5. Seismic design category.6. Basic seismic-force-resisting system(s).7. Design base shear.8. Seismic response coefficient(s), CS.9. Response modification factor(s), R.10. Analysis procedure used.Where the information along different horizontalaxes of the building is different, the informationfor both orthogonal axes shall be show.1603.1.6 Flood Load. For buildings located inflood-hazard areas, the design flood elevation andwhether or not the construction is subject to highvelocity wave action shall be indicated. Thefollowing information, referenced to the datum onthe community’s flood insurance rate map(FIRM), shall be shown, regardless of whetherflood loads govern the design of the building:1. In flood-hazard areas not subject to highvelocity wave action, the elevation of proposedlowest floor, including basement.2. In flood-hazard areas not subject to highvelocity wave action, the elevation to whichany nonresidential building will be dryfloodproofed.3. In flood-hazard areas subject to highvelocity wave action, the proposed elevation ofthe bottom of the lowest horizontal structuralmember of the lowest floor, includingbasement.1603.1.7 Special Loads. Special loads that areapplicable to the design of the building, structureor portions thereof shall be indicated.1603.2 Structural Designs under the Control ofthe Construction Contractor. When structuralcomponents, assemblies, or systems are designed bydesign professionals under the control of thecontractor, and said designs are not included with theapplication for permit, said designs shall be8/22/08 (Effective 9/1/08)submitted to the building official with an applicationfor amendment of the permit.780 CMR 1604.0 GENERAL DESIGNREQUIREMENTS1604.1 General. Building, structures, and partsthereof shall be designed and constructed inaccordance with strength design (also known as loadand resistance factor design), allowable stressdesign, or empirical design, as permitted by theapplicable material chapters.1604.2 Strength. Buildings and other structures,and parts thereof, shall be designed and constructedto support safely the factored loads in loadcombinations defined in 780 CMR withoutexceeding the appropriate strength limit states for thematerials of construction. Alternatively, buildingsand other structures, and parts thereof, shall bedesigned and constructed to support safely thenominal loads in load combinations defined in780 CMR without exceeding the appropriatespecified allowable stresses for the materials ofconstruction.Loads and forces for occupancies or uses notcovered in 780 CMR 16.00 shall be subject to theapproval of the building official.1604.3 Serviceability. Structural systems andmembers thereof shall be designed to have adequatestiffness to limit deflections and lateral drift.1604.3.1 Deflections.The deflections ofstructural members shall not exceed thelimitations of 780 CMR 1604.3.2 through1604.3.5, as applicable; however, under nocircumstance shall the deflections from gravityloads on floors or roofs exceed 1/240th of the span,nor shall the deflections of walls due to lateralloads exceed 1/180th of the span.1604.3.2 Reinforced Concrete. The deflection ofreinforced concrete structural members shall notexceed that permitted by ACI 318.1604.3.3 Steel. The deflection of steel structuralmembers shall not exceed that permitted by AISCLRFD, AISC HSS, AISC 335, AISI -NASPEC,AISI-General, AISI-Truss, ASCE 3, ASCE 8SSD-LRFD/ASD, and the standard specificationsof SJI Standard Specifications, Load Tables andWeight Tables for Steel Joists and Joist Girders asapplicable.1604.3.4 Masonry. The deflection of masonrystructural members shall not exceed that permittedby ACI 530/ASCE 5/TMS 402.1604.3.5 Aluminum.The deflection ofaluminum structural members shall not exceedthat permitted by AA-94.1604.4 Analysis. Load effects on structural members and their connections shall be determined bymethods of structural analysis that take into account780 CMR - Seventh Edition381
780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDSTHE MASSACHUSETTS STATE BUILDING CODEequilibrium, general stability, geometriccompatibility, and both short- and long-term materialproperties.Members that tend to accumulate residualdeformations under repeated service loads shall haveincluded in their analysis the added eccentricitiesexpected to occur during their service life.Any system or method of construction to be usedshall be based on a rational analysis in accordancewith well-established principles of mechanics. Suchanalysis shall result in a system that provides a complete load path capable of transferring loads fromtheir point of origin to the load-resisting elements.The total lateral force shall be distributed to thevarious vertical elements of the lateral-forceresisting system in proportion to their rigiditiesconsidering the rigidity of the horizontal bracingsystem or diaphragm. Rigid elements that areassumed not to be a part of the lateral-force-resistingsystem shall be permitted to be incorporated intobuildings provided that their effect on the action ofthe system is considered and provided for in design.Provisions shall be made for the increased forcesinduced on resisting elements of the structuralsystem resulting from torsion due to eccentricitybetween the center of application of the lateral forcesand the center of rigidity of the lateral-forceresisting system.Every structure shall be designed to resist theoverturning effects caused by the lateral forcesspecified in 780 CMR 16.00. See 780 CMR 1613for earthquake, 780 CMR 1609.0 for wind, and780 CMR 1610.0 for lateral soil loads.1604.5 Importance Factors. Importance factorsshall be in accordance with ASCE 7.1604.6 In-situ Load Tests. The building official isauthorized to require an engineering analysis or aload test, or both, of any construction whenever thereis reason to question the safety of the constructionfor the intended occupancy. Engineering analysisand load tests shall be conducted in accordance with780 CMR 1624.0.1604.7 Preconstruction Load Tests. Materials andmethods of construction that are not capable of beingdesigned by approved engineering analysis or that donot comply with the applicable material designstandards listed in 780 CMR 35.00, or alternativetest procedures in accordance with 780 CMR 1625.0,shall be load tested in accordance with 780 CMR1626.0.3821604.8 Overturning, Sliding, and Anchorage.1604.8.1 General. Anchorage of the roof to wallsand columns, and of walls and columns tofoundations, shall be provided to resist the upliftand sliding forces that result from the applicationof the prescribed loads. Foundations shall becapable of resisting applied uplift and slidingforces.1604.8.2 Concrete and Masonry Walls.Concrete and masonry walls shall be connected tofloors, roofs and other structural elements thatprovide lateral support for the wall. Suchanchorage shall provide a positive directconnection capable of resisting the horizontalforces specified in 780 CMR 16.00 but not lessthan a minimum horizontal force of 190 poundsper linear foot (2.77 kN/m) of wall for allowablestress design, and 280 pounds per lineal foot (4.09kN/m) of wall for strength design. Walls shall bedesigned to resist bending between anchors wherethe anchor spacing exceeds four feet (1219 mm).Required anchors in masonry walls of hollowunits or cavity walls shall be embedded in areinforced grouted structural element of the wall.1604.9 Application and Posting of Live Loads.1604.9.1 Restrictions on Loading. It shall beunlawful to place, or cause or permit to be placed,on any floor or roof of a building, structure, orportion thereof, a load greater than the capacity ofthe floor or roof determined in accordance withthe requirements of 780 CMR.1604.9.2 Live Loads Posted: All buildings inUse Groups F and S shall be conspicuously postedfor live loads by the owner, using durable signs.It shall be unlawful to remove or deface suchnotices.1604.10 Snow, Wind, and Earthquake DesignFactors: Ground snow load, pg, basic wind speed(three second gust speed), V, and earthquakeresponse accelerations for the maximum consideredearthquake, SS and S1, for each city and town inMassachusetts shall be as given in Table 1604.10.NOTE: Table 1604.10 Ground Sow Loads; BasicWind Speeds; Earthquake Design Factors applies,as applicable, to all use groups except for R-3One- and Two-family dwellings.For ground snow loads and basic wind speedsfor R-3 of three stories or less one- and twofamily stand alone dwellings, see 780 CMR53.00.780 CMR - Seventh Edition8/22/08 (Effective 9/1/08)
780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDSSTRUCTURAL DESIGNTABLE 1604.10 GROUND SNOW LOADS; BASIC WIND SPEEDS; EARTHQUAKEDESIGN FACTORS(For R-3 of three stories or less one- and two-family stand alone buildings, see 780 CMR 53.00 forsnow and wind ordAmesburyAmherstAndoverAquinnah (see Gay ndBurlington8/22/08 (Effective 9/1/08)Ground SnowLoadpg, psfBasic WindSpeedV, thquake Design .0620.0650.0640.0650.0680.0680.071780 CMR - Seventh Edition383
780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDSTHE MASSACHUSETTS STATE BUILDING CODETABLE 1604.10 GROUND SNOW LOADS; BASIC WIND SPEEDS; EARTHQUAKEDESIGN FACTORS(For R-3 of three stories or less one- and two-family stand alone buildings, see 780 CMR 53.00 forsnow and wind montCharltonChathamChelmsfordChelseaChesh
3. Wind exposure. If more than one wind exposure is utilized, the wind exposures and applicable wind directions shall be indicated. 1603.1.5 Earthquake Design Data. The following information related to seismic loads shall be shown, regardless of whether seismic loads govern the lateral design of the buildin
780 CMR 33.00 and NFPA-241 listed in 780 CMR 35.00 in order to safeguard against fires during construction, alterations and demolition of all buildings and structures regulated by 780 CMR. 901.7.2 Authority. In accordance with the requirements of 780 CMR 110.0 and 780
Contents iv Cisco IOS XR Command Modes Reference HSRP Interface Configuration Mode CMR-6 Interface Address Family Configuration Mode CMR-7 Interface Configuration Mode CMR-7 Interface Configuration Mode (Protocol Areas) CMR-8 Interface IGMP Configuration Mode CMR-8 Interface Management Configuration Mode CMR-8 Interface Mulitcasting Mode CMR-9 Interface PIM Configuration Mode CMR-9
314 CMR 5 10314 CMR 5.10 All groundwater is actual or potential source of potable waterpotable water Effluent limitations consistent with levels established in 310 CMR 22.00in 310 CMR 22.00 Eliminate 314 CMR 6.00 Any Class III in existence as of 3/20/09 can remainAny Class III in existence as of 3/20/09 can remain
Ahmed, Ahmed Edmonton 780-244-2995 CCFP Ahmed, Bilal Affan Edmonton 780-426-1121 DRAD Ahmed, Ghalib Edmonton 780-468-6409 CCFP Ahmed, Iftekhar Edmonton 780-440-2040 - Ahmed, Imran Edmonton 587-521-2022 - Ahmed, Khaled Masood Abdullah Calgary 403-460-5171 CCFP Ahmed, Maaz Edmonton 780-990-1820 - Ahmed, Moheddin St. Albert 780-569-5030 -
Americans (see 110 CMR 1.07), handicapped clients (see 110 CMR 1.08), and nondiscrimination (see 110 CMR 1.09). Failure to conform to such obligations shall be grounds for terminating any provider's contract. (4) All purchases of services by the Department are subject to the proposal review of the
to the AF&PA Span Tables for Joists and Rafters, or the AF&PA Maximum Span Calculator for Joists & Rafters. 5502.3.1 Sleeping Areas and Attic Joists. 780 CMR Table 5502.3.1(1) shall be utilized to determine the maximum allowable span of floor joists that support sleeping areas
780 CMR 780 CMR 7th Edition Introduced January 2007 Based on the 2003 IBC Section 907.2.12.3 addressed Fire Department Communication System –Hardwired Telephone handset two-way system –Exception: Fire Department Radio Systems Exception NFPA 72 NFPA
For AOl or A02 Transactions where abo·ve situations apply. 9 characters 853: Date (mm/dd/yy) DESCRIPTION: REQUIRED: LENGTH: ENTER: CODES DEFINED: EXAII1PLE: 033-1 c6/0084 2.105 (Rev. 05/90) ITEM 856 - DEMOTION REASON Explanation of employee's preference in voluntarily demoting or choosing a demotion other than that which was directed (e.g., layoff, reassignment, etc.). For A02 Transaction .
