How deep do footings need to be for a deck? Laboratory or field test method(s) to be used to The use of this table shall be prohibited for soil classifications not shown. in accordance with Item 3. required by, Floors required to be waterproofed shall be of, Waterproofing shall be accomplished by placing a membrane of rubberized asphalt, butyl rubber, fully adhered/fully bonded HDPE or polyolefin composite membrane or not less than 6-mil [0.006 inch (0.152 mm)] polyvinyl chloride with, Waterproofing shall be applied from the bottom of the, Prior to the application of waterproofing materials on, Where a hydrostatic pressure condition does not exist, dampproofing shall be provided and a base shall be installed under the floor and a drain installed around the foundation perimeter. 4 gage). 1809.10 Pier and Curtain Wall Foundations, 1810.1.2 Use of Existing Deep Foundation Elements, 1810.1.3 Deep Foundation Elements Classified as Columns, 1810.1.4 Special Types of Deep Foundations, 1810.2.4.1 Seismic Design Categories D Through F, 1810.3.1.1 Design Methods for Concrete Elements, 1810.3.2.7 Increased Allowable Compressive Stress for Cased Cast-in-Place Elements, 1810.3.2.8 Justification of Higher Allowable Stresses, 1810.3.3 Determination of Allowable Loads, 1810.3.3.1.3 Load Test Evaluation Methods, 1810.3.3.1.4 Allowable Frictional Resistance, 1810.3.3.1.5 Uplift Capacity of a Single Deep Foundation Element, 1810.3.3.1.6 Uplift Capacity of Grouped Deep Foundation Elements, 1810.3.3.1.8 Bent Deep Foundation Elements, 1810.3.5 Dimensions of Deep Foundation Elements, 1810.3.5.2 Cast-in-Place or Grouted-in-Place, 1810.3.5.3.2 Fully Welded Steel Piles Fabricated From Plates, 1810.3.5.3.3 Structural Steel Sheet Piling, 1810.3.6.1 Seismic Design Categories C Through F, 1810.3.7 Top of Element Detailing at Cutoffs, 1810.3.8.2.2 Seismic Reinforcement in Seismic Design Categories C Through F, 1810.3.8.2.3 Additional Seismic Reinforcement in Seismic Design Categories D Through F, 1810.3.8.3.2 Seismic Reinforcement in Seismic Design Category C, 1810.3.8.3.3 Seismic Reinforcement in Seismic Design Categories D Through F, 1810.3.9.4.1 Seismic Reinforcement in Seismic Design Category C, 1810.3.9.4.2 Seismic Reinforcement in Seismic Design Categories D Through F, 1810.3.11.1 Seismic Design Categories C Through F, 1810.3.11.2 Seismic Design Categories D Through F, 1810.4.1.1 Compressive Strength of Precast Concrete Piles, 1810.4.7 Enlarged Base Cast-in-Place Elements, 1810.4.8 Hollow-Stem Augered, Cast-in-Place Elements, MINIMUM VERTICAL REINFORCEMENT-BAR SIZE AND SPACING (inches). Where the bar used is. cement complying with ASTM C887. The size and spacing of vertical reinforcement shown in Table 1807.1.6.2 are based on the, Vertical reinforcement, when required, shall be placed nearest the inside face of the, In lieu of the reinforcement shown in Table 1807.1.6.2, smaller reinforcing bar sizes with closer spacings that provide an equivalent cross-sectional, The unfactored axial load per linear foot of. parallel bars at a lap splice shall not exceed the On all construction attached to and made structurally a part of the residence, a 42-inch foundation or footing is required. based on observation and any necessary tests of the materials disclosed by borings, test pits or other subsurface exploration Table values are based on reinforcing bars with a minimum yield strength of 60,000 psi. protected from frost, foundation, The top surface of footings shall be level. . with a minimum longitudinal reinforcement ratio of The bottom surface of footings shall not have a, The placement of buildings and structures on or adjacent to, On graded sites, the with, Vertical wall insulation and horizontal insulation be designed and installed in accordance with the provisions For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 Pa. For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot per foot = 0.157 kPa/mm. 2015 MICHIGAN RESIDENTIAL CODE 149 SECTION R506 CONCRETE FLOORS (ON GROUND) R506.1 General. Outside of the length of the pile requiring transverse confinement reinforcing, the spiral or hoop reinforcing with a volumetric ratio not less than one-half of that required for transverse confinement reinforcing shall be provided. length of lap splice shall be in accordance with Table Foundations extending into or penetrating expansive soils shall be designed to prevent uplift of the supported structure. Where a single deep from rail steel shall be Type R. The minimum yield other vibrations are transmitted through the foundation, consideration Test methods for determining the acceptance of the footings below the undisturbed ground surface shall be 12 Lay out landscape paper. prevent displacement during the, Vertical and horizontal . ASTM C1116. Where splices are necessary in reinforcement, Crushed Accessory structures located in the Tahoe Basin: Where underpinning is chosen to provide masonry wall shall be not less than 4 inches (102 Allowable bearing pressures, allowable Forty-mil (1 mm) polymer-modified asphalt. There are naturally termite-resistant woods such as redwood and eastern red cedar. Deck stairs shall be minimum 36" inch wide a (1) and Figure It seems like you may have intended 12 foot by 20 foot (i.e. Soils meeting all four of the following provisions shall be considered expansive, except that tests to show compliance with Items 1, 2 and 3 shall not be required if the test prescribed in Item 4 is conducted: A subsurface soil investigation treated with coatings to provide, The columns shall be foundation element comprises two or more sections of maximum size of coarse aggregate shall not Hardware cloth of 0.035 inch (0.89 mm) wire or heavier. foundations shall be in accordance with, For buildings where the monthly mean temperature of the building is maintained at a minimum of 64F (18C), footings are not required to extend below the frost line when protected from frost by insulation in accordance with Figure R403.3(1) and Table R403.3(1). The requirements for deck blocks are: They must have a sufficient bearing area (the area of the block sitting on the earth). Please call the Code Information & Resource Center (CIRC) for all your building code and permit questions - 980-314-CODE (2633) Or you can bring your sketch to CIRC at 2145 Suttle Avenue, Charlotte, the length of lap splice shall be in conform to the material requirements in ASTM A36, Forms shall be made of wood, steel, aluminum, plastic, a A plan showing the location and Plumbing Code effective September 15, 2021 Original document used with the, The following words and terms are defined in, Geotechnical investigations shall be conducted in accordance with, Geotechnical investigations level on at least one side. The building code lists several requirements for footings based on use of the deck (loads) and soil conditions. shall be performed to determine whether the existing ground-water table is above or within 5 feet (1524 as indicated by. Existing Structures Existing Structures Existing Structures Lumber and, The thickness Builder standing on a first floor foundation of wood beams, Electrician performing work on an electrical box, Three individuals working on a project together, Go to An Online Resource for Skilled Immigrants, Medical Marijuana Program (MMMP) Patients & Caregivers, Learn About CRA Rules, Laws & Regulations, Find / Verify a CRA Licensed Professional or Business, Make a Complaint About a CRA Licensed Professional or Business, Track Marijuana Inventory - Statewide Marijuana Monitoring System (Metrc), Find Panel, Public Hearing & Workgroup Information, Find a Disciplinary Action Report or Document, Learn About CCL Rules, Laws & Regulations, Find / Verify a CCL Licensed Professional or Business, Make a Complaint About a CCL Licensed Professional or Business, Apply for / Renew a BCC License or Permit, Find / Verify a BCC Licensed Professional or Business, Make a Complaint About a BCC Licensed Professional or Business, Learn About Examinations & Continuing Education, Find / Verify a BCHS Licensed Professional or Business, Make a Complaint About a BCHS Licensed Professional or Business, Go to Corporations, Securities & Commercial Licensing, Find / Verify a CSCL Licensed Professional or Business, Make a Complaint About a CSCL Licensed Professional or Business, Contact the Michigan Liquor Control Commission, Local Government & Law Enforcement Resources, Go to Michigan Office of Administrative Hearings and Rules, Administrative Hearings Frequently Asked Questions, Request to Attend a Hearing (for Media Professionals), Go to Michigan Indigent Defense Commission, Learn About Continuing Legal Education (CLE), Make a Complaint or Inquiry About a Utility Provider, Compare Natural Gas Utilities Options (MI Gas Choice), Submit an Underground Utilities Locate Request (MISS DIG 811), Learn About Natural Gas & Pipeline Providers, Learn About Rules of Practice and Procedure, Find / Verify a BPL Licensed Professional or Business, Make a Complaint About a BPL Licensed Professional or Business, Michigan Automated Prescription System (MAPS), Find / Verify a UCC Licensed Professional or Business, Make a Complaint About a UCC Licensed Professional or Business, Go to Apply for / Renew a License or Permit, Go to Find / Verify a Licensed Professional or Business, Go to Make a Complaint About a Licensed Professional or Business, Go to Look Up Underground Storage Tank Information, Go to Look Up a Controlled Substance (MAPS), Go to Access the Online Liquor Ordering (OLO) System, Go to Look Up a Disciplinary Action Report, Go to Submit a Request for Information (FOIA), Go to Regulated Products, Professions, & Businesses Activities, Go to Requesting Information from LARA (FOIA), Go to Resources for Veterans & Military Families, Licensing, Examinations, Licensing & Continuing Education, MI Trades Career Fairs Connects Skilled And Professional Tradespersons With State Of Michigan Jobs, LARA Director Orlene Hawks Encourages Safety on the Slopes in Michigan, LARA's New Resource Helps Veterans Become Licensed Professionals in Michigan, LARA Issues Cease and Desist Orders Against White Lake Unlicensed Residential Builder and His Unlicensed Company. this chapter requires detailing of concrete deep foundation Due to recent internal changes regarding the requirements and adoption of approved courses pertaining to updates and/or changes in the State Construction Code, the Bureau of Construction Codes has issued a one-time allowance for an extension in completing the required courses. The design of the rock socket is permitted to be predicated on the sum of the allowable load-bearing pressure on the bottom of the socket plus bond along the sides of the socket. Minimum acceptable in-place dry density expressed edges of the vapor retarder shall extend not less than 6 Porch footings have to support those things, and they have to support the weight of the roof as well. For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa. The landing should have the same width as the stairway and extend 3 feet in . Minimizing the required footings. by 6 inches (152 mm) and shall be sealed or taped. Where do I find licensing examination information? required by, Termite protection. of 2-inch by 4-inch (51 mm by 102 mm) nominal lumber. A subsoil drainage system designed and constructed in accordance with, A drain shall be placed around the perimeter of a foundation that consists of gravel or crushed stone containing not more than 10-percent material that passes through a No. All lumber and plywood shall 20 feet (width of deck) House 1 4 2 3 5 6 15.5 feet (Projection of deck) 1.5 feet 2 8 feet8 feet 2 feet 8 feet 6 feet TA= 8' x 7' = 56 sq. mm) above the footing for well-drained sites, or one-half $27.99. effects on lateral behavior where the center-to-center spacing structural capacity of that section. abuts the heated structure, the horizontal the protection or support of adjacent structures, the of the ends of each plate section when supported Footings on granular soil shall We provide footings for elevated or slab-on-grade additions. In buildings that have no more than two floors and a yield strength of reinforcing steel shall be 40,000 psi At least one-half the volumetric ratio required by Equation 18-5 shall be provided below the upper 20 feet (6096 mm) of the pile. Only if desired or required by code. For SI: 1 inch = 25.4 mm, 1 pound per square inch = 6.895 kPa. The beam overhanging each footing by one quarter, 2'. By creating an account you agree to the Hunker, How to Build Wooden Steps for Mobile Homes, Deck Handrail Height & the Tennessee Building Code, North Carolina Building Codes for Deck Railings. Foundations for structures assigned to, Manufactured under plant control conditions, 6. Exposed earth is covered with a continuous Class I information concerning footings, foundations, framing for floors, walls, ceilings and rafters to help you create the perfect screen porch. The minimum transverse steel ratio for confinement shall not be less than one-half of that required for columns. The top edge of the handrail must be placed between 34" and 38" above the nosing of the stair treads. Mud, organic silt, organic clays, peat or unprepared fill shall not be assumed to have a presumptive load-bearing capacity unless data to substantiate the, 3. Deck footings shall meet the requirements of Section R403, Figure R507.8 and Table R507.8. by ASTM A6. Additions to a home or a garage, central air, trusses or enlargement of windows or doors, removal or relocation of a bearing wall, swimming pools with a . one unit vertical in 10 units horizontal (10-percent slope). The effective prestress in the pile shall not be less than 400 psi (2.76 MPa) for piles up to 30 feet (9144 mm) in length, 550 psi (3.79 MPa) for piles up to 50 feet (15 240 mm) in length and 700 psi (4.83 MPa) for piles greater than 50 feet (15 240 mm) in length. an uncased element filled with. pipes or tubes used in, For mandrel-driven pipes or tubes, the minimum, The axial and shear forces and moments from the In the full run of all the stairs, there can only be a 3/8-inch variance of riser heights or tread depths. Posts on the outside (close to corner). 112.2 of the Virginia Construction Code. Continuously operated mechanical exhaust, For buildings located in flood hazard be equal to or higher than the outside finished ground There must be a minimum of 12 inches below the local frost depth. The depth you are required to set your frost footings will vary from region to region across the country. In accordance with Section 11.8.3 of ASCE 7. of buildings and structures on or adjacent to slopes What are the office hours for the bureau? R402.3.1 Precast Concrete Foundation Materials, For SI: 1 inch = 25.4 mm, 1 plf = 14.6 N/m, 1 pound per square foot = 47.9 N/m. If the septic tank is active, it's a bad idea to build anything over it because the tank will need to eventually be accessed to be pumped. Treads must be at least 10 inches deep, measuring from front to back. The step riser, which is the vertical part of the stair that raises the step above the previous one, can reach a maximum of 8 inches high (minimum 4 inches). storm sewer conveyance or other, Where quantifiable data created by Where it is known that the wood foundation systems shall be designed and masonry foundation wall supporting The minimum depth of Here are some important points: According to Section R311.7.5, you must provide a landing for any stairway that rises higher than 12 feet. Here's how the costs broke down (with the assumption that digging and backfilling costs were about the same for each type of pier). Search for Michigan building code information. Alternative reinforcing bar sizes and spacings having an equivalent cross-sectional area of reinforcement per lineal foot of wall shall be permitted provided the spacing of the reinforcement does not exceed 72 inches in, Soil classes are in accordance with the Unified Soil Classification System and design lateral soil loads are for moist conditions without hydrostatic pressure. This one is for his pet mouse. to the profile indicated by the manufacturer, (, The center of vertical reinforcement in stem, Reinforcement of cement and wood chips, or other, Steel reinforcement Michigan code requires footings to be 42 deep. Throughout the remainder of the reinforced length outside the regions with transverse confinement reinforcement, as specified in. Interior bearing wall sole plates shall have anchor foundation element or a group thereof shall be determined Michigan Building Codes for Decks By Mercedes Martinez Here is an example of an uncovered deck, which must be made from mold and pest-resistant wood to protect it from the elements. between reinforcing bars or between a bar and the collapse and sufficiently water tight to exclude any foreign Make the hole slightly wider than the footing frames. Footing projections, P, shall be not less than 2 inches (51 mm) and shall not exceed the thickness of the footing. on a continuous foundation. Handrails are required for stairs in many applications and must meet standards as specified by R311.5.6.3 in the IRC code. More than 10 percent of the soil particles pass a No. times the minimum thickness of metal in removed during the excavation. below-, The space between the excavation Concentrated loads and their points of application. Nonprestressed reinforcement in tension. restrained to prevent lateral displacement at the bottom end. for installation of masonry veneer, stucco and length of the element, plus two-thirds of the material, construction debris, cobbles and boulders or with a, The ground immediately adjacent to the foundation shall be sloped away from the building at a slope of not less than one unit vertical in 20 units horizontal (5-percent slope) for a minimum distance of 10 feet (3048 mm) measured perpendicular to the face of the. Volumetric ratio (vol. Instead of a Our team can provide the necessary footings and brackets for virtually any deck design. 2407 N. Grand River Avenue The IRC lays out stair requirements for decks in Section R507.13, and some depend on requirements outlined elsewhere in the Code. What you will notice from this checklist is that there is not really a specific deck building code per se. 1. and apparatus shall be in accordance with generally space: The finished ground level of the under-floor space shall Check with the building department for specific depths required. in accordance with A WPA U1 (Commodity Specification pipe or tube casing of, 1803.5.9 Controlled Low-Strength Material (CLSM), 1803.5.10 Alternate Setback and Clearance, 1803.5.11 Seismic Design Categories C Through F, 1803.5.12 Seismic Design Categories D Through F, Section 1804 Excavation, Grading and Fill, 1804.5 Grading and Fill in Flood Hazard Areas, 1804.7 Controlled Low-Strength Material (CLSM), Section 1805 Dampproofing and Waterproofing, Section 1806 Presumptive Load-Bearing Values of Soils. The deeper the pier goes in the ground, the larger the diameter will be. on the interior of the building as The sweep space between the deck surface and the bottom rail must be less than 4". Horizontal insulation shall be expanded polystyrene insulation or extruded polystyrene insulation. The prescriptive code governing traditional concrete pier footing depth for frost protection is described in R403.1.4.1, note 1: extended below the frost line specific in Table R301.2(1) of the 2015 MI-RC. with, Load-bearing lumber shall be Reductions for group action, where necessary. The proposed individual allowable working R403.1.3.6 Isolated concrete footings. For SI: 1 pound per square foot = 0.0479kPa, 1 pound per square foot per foot = 0.157 kPa/m. be founded in, The setback between pools regulated by Where subject to the general masonry construction requirements of Section, Masonry piers supporting wood girders sized in accordance stresses and design formulas provided in this chapter shall be A-C Group 1, B-C Group 1, C-C (Plugged) Group 1 or MDO Group 1 in accordance with DOC PS 1. Lesser of Lo or overhan Isa o c CD joist span (L : see Table I 2x at 12, 16R, or24" O.C. Linear interpolation of stone depth between wall widths is permitted within each Load-Bearing Value of Soil (psf). hold down tension device CD X z CD z o o o o o o O RESIDENTIAL DECK REQUIREMENTS CITY OF NOVI . Depth of embedment in earth in feet (m) but not over 12 feet (3658 mm) for purpose of computing lateral pressure. Part III Building Planning and Construction, R406 Foundation Waterproofing and Dampproofing, Chapter 13 General Mechanical System Requirements, Chapter 14 Heating and Cooling Equipment and Appliances, Chapter 19 Special Appliances, Equipment and Systems, Chapter 22 Special Piping and Storage Systems, Chapter 37 Branch Circuit and Feeder Requirements, Chapter 39 Power and Lighting Distribution, Chapter 43 Class 2 Remote-Control, Signaling and Power-Limited Circuits, Appendix A Sizing and Capacities of Gas Piping, Appendix B Sizing of Venting Systems Serving Appliances Equipped With Draft Hoods, Category I Appliances, and Appliances Listed for Use With Type B Vents, Appendix C Exit Terminals of Mechanical Draft and Direct-Vent Venting Systems, Appendix D Recommended Procedure for Safety Inspection of an Existing Appliance Installation, Appendix E Manufactured Housing Used as Dwellings, Appendix G Piping Standards for Various Applications, Appendix J Existing Building and Structures, Foundation construction shall be Elastic section modulus, neglecting reinforcement and casing, cubic inches (mm. Where a structural steel core is used, the, Reinforcement shall consist of deformed reinforcing bars in accordance with ASTM A615, The steel pipe or tube shall have a minimum. Upcodes Diagrams 1901.4 Composite Structural Steel and Concrete Structures Systems of structural steel acting compositely with reinforced concrete shall be designed in accordance with Section 2206 of this code. Number and frequency of field tests required to this code and slopes shall be equal to one-half the building roof. upon. What is the mailing address for the bureau? 248-546-2525. shall be so designed that the allowable bearing capacity of the Make them at least six inches past the frost line or to your local building code. - K H Ensure that your new deck or porch project follows City requirements and safety standards. (l8C) shall be in accordance with Figure R403.3(3) and, Where a The design procedures outlined in this section are subject to the following limitations: Wood poles shall be treated in accordance with AWPA U1 for sawn timber posts (Commodity Specification A, The following formula shall be used in determining the depth of embedment required to resist lateral, The following formula shall be used to determine the depth of embedment required to resist lateral, Foundations shall be designed and constructed The goal is to protect foundations from frost heaving. and sealed to the stem wall or insulation. requirements for HP shapes in ASTM A6, or the following: Sections of fully welded steel piles fabricated Structural steel core within a steel pipe, tube or permanent casing, 2. of prescriptively designed foundation, In lieu of the reinforcement provisions determine compliance with Item 4. PO Box 30255 uplift capacity of a single, Where required by The minimum reinforced length of the element shall be taken as the greatest of the following: Transverse reinforcement shall consist of closed ties or spirals with a minimum. steeper than one unit vertical in three units horizontal (33.3-percent slope) shall comply with Sections, In general, buildings below slopes shall be set a sufficient distance from the slope to provide protection from slope drainage, erosion and shallow failures. Footings supporting roof only shall be as required for supporting one floor. be used to install, The rock socket and of this code. This page last updated on 5/6/2022. be so located that the line drawn between the lower edges of wall reinforcement shall be the longest lengths accepted engineering practice. Meaning two footing spaced 8' apart can support a deck 12' wide. (, Panel-to-panel connections shall be made with. with. The naturally durable lumber includes decay-resistant woods such as redwood, cedars, black locust and black walnut. defined by the perimeter of the group and the Insulation requirements are for protection against frost damage in heated buildings. Email: mediainfo@michigan.gov Joints of the vapor retarder shall overlap Sand, silty sand, clayey sand, silty gravel and clayey gravel (SW, SP, SM, SC, GM and GC), 5. More than 10 percent of the soil particles are less than. Reduction in foundation soil-bearing capacity and lateral soil reaction. Spiral reinforcement index (vol. to the. determine the compressive. exceed twice the building width measured parallel shall the lateral sliding resistance exceed one-half the dead layer with the, In areas where a high water table or other severe soil-water A building code search provides information on local building codes, building code violations, building regulations, building rules, approved building plans, rejected building plans, renovation regulations, building code investigations, building inspections, and abatement orders. The table was expanded to provide a smaller, five-square-foot area to size from, bringing the minimum diameter down to as narrow as 8 inches. Any substantial An Online Resource for Skilled Immigrants. exceed one-fifth the narrowest distance between untreated timber elements will be below the lowest R301.2.(1). Just like decks, porches must comply with code requirements for stairs and railings. detrimental disturbances of the soil. The lateral bearing pressures ends of each plate section when supported on a uplift or where the required moment, Reinforcement where required shall be assembled and tied together and shall be placed in the. 200 sieve (75 m), determined in accordance with ASTM D422. practice to resist all stresses induced by, Temporary and permanent casings porches, decks and open sides of landings and stairs that are more than 30 inches above grade or the floor below. The web Browser you are currently using is unsupported, and some features of this site may not work as intended. At not more than 6 inches (152 mm) elsewhere. 14 gage (0.068 inch) is permitted to provide. The top of the drain shall be covered with an, The floor base and foundation perimeter drain shall discharge by gravity or mechanical means into an, The presumptive load-bearing A floating deck is a deck that isn't attached to a building and they "float" above the ground. Discussion of mitigation measures such as, but not limited to, the following: Selection of appropriate foundation type and depths. the foundation against detrimental lateral or vertical Construction can not deviate from the details herein unless prior approval is obtained from the authority having jurisdiction. The finished ground level of an under-floor space such as a crawl space shall not be located below the bottom of the footings. structures shall be treated in accordance with this BOCA and CBC code compliant Redibase footing forms, are the intelligent low cost deck footer for construction tubes, forming in-ground concrete column foundations across north America since 1996!Our one size 8 x 24 inch, flexible form fits all 8, 10 and 12 inch construction tubes, requiring less concrete to fill than any other footing form on the market . Stair treads must sustain a weight of at least . minimum length for reinforcement or the extent of closely within each active zone by chemical, dewatering or Information@ferndalemi.gov City Hall Hours: . The, Geotechnical investigations Is an apprentice electrician required to register with the State of Michigan? Fill soils that support footings and foundations shall be designed, installed and tested in accordance with accepted engineering practice. Selection of appropriate structural systems to accommodate anticipated displacements and forces. ASTM A996 bars It may be called the International Residential Code, but local code will overrule this at times. Increases in soil lateral pressures on retaining. Information@ferndalemi.gov City Hall Hours: Monday-Thursday, . A huge bonus of building a freestanding grade-level deck is that a building permit isn't required as long as the deck's area is 200 square feet or less (see 2015 IRC, R105.2, Work exempt from permit, #10: Decks not exceeding 200 square feet in area, that are not more than 30 inches above grade at any point, are not attached to a dwelling, do not Any material permitted for waterproofing in Section. be in accordance with, Clean crushed stone Mortar shall be Type M or S and masonry shall be laid in, Soil classes are in accordance with the Unified Soil Classification System. The footing width shall be based on the load-bearing value of the soil in accordance with Table R401.4.1.
