Inspection Requirements

• Determine if the soil has the minimum bearing capacity as designed. Check geotechnical test results.
• Verify that the soil in the area of the footings is consistent (No soft spots, color changes, exposed strata, debris, or water).
• Verify that weather conditions are suitable for placing concrete or that proper precautions are used to adjust for adverse conditions.
• Compare actual dimensions with those on approved drawings.
• Determine if the bottom of the footing is below the frost line; unless otherwise protected (30" below finished grade).
• Verify that the ground wire or horizontal ground rod is in place where applicable.
• Verify that reinforcement steel is placed in accordance with approved drawings.
• Verify that approved dowels are in place where required.
• Prior approval must first be obtained when professional third party inspectors are used. Submit the engineer's certification to the Building Inspections office as soon as possible. All engineer's certificatiions shall list the building address, permit number and have the engineer's original stamp and signature.

• Determine if the required base material is four inches thick and consists of clean, graded sand, gravel, crushed stone or crushed slag.
• Determine if a vapor retarder is provided and that it is a 6 mil visqueen vapor retarder with joints lapped not less than six inches and placed at the bottom of the slab.
• Determine if the slab thickness and reinforcement is in accordance with design criteria and compares favorably to approved plans.
• Verify that the concrete mix will result in a compressive strength equal to the design criteria. (Check Delivery Tickets)
• Verify that required and approved perimeter slab insulation is installed properly.
• Verify that all requirements to the approved plans have been met.

Special Note: All approved building permit drawings, manufacturers shop drawings and details, necessary certifications must be in place prior to requesting this floor and/or ceiling framing inspection.

• Compare joists species, grade, size, clear span and spacing of the joists with design specifications, approved drawings, codes, and manufacturers details.
• Compare headers and girders species, grade, size, clear span and spacing of the joists with design specifications, approved drawings, codes, and manufacturers details.
• Determine if the length of the bearing point is at least 1½ inches if the supporting element is wood or metal, or at least 5 inches if masonry.
• Determine if the joists are supported by an approved and properly installed joist header or ledger strips at least 2 inches by 2 inches, where joists are framed into the side of a wood beam or girder.
• Verify that there are no notches in the middle 1/3 of any joist span.
• Verify that notches on the ends of the joist do not exceed ¼ the depth of the joist.
• Verify that notches between the ends and middle 1/3 of the span do not exceed 1/6 the depth of the joist.
• If the top notches in the ceiling joists exceed 1/6 of the joist depth, then verify that they are located no further than the joist depth from the face of the support and that they do not exceed 1/3 of the joist depth.
• Verify that notches are not longer than 1/3 of the joist depth.
• Verify that the tension side of the member is four inches or greater in nominal thickness and is not notched, except at the ends of the member.
• Check that there are no bored holes within two inches of the top or bottom of the joist.
• Confirm that the diameters of bored holes do not exceed 1/3 of the depth of the joist.
• Check that there are no holes within two inches of another hole or notch. Determine if the joists are toe nailed to the sills or girders with at least 3-8d nails.
• If posts are used to support beams and girders, then determine if positive connections are installed.
• Determine if the joists parallel to the bearing walls above are doubled OR an equivalent beam is used as a minimum.
• Determine if the header span is greater than four feet. If so, then the header is to be at least doubled.
• Determine if approved joist hangers are used to connect the header and trimmer joists for header joist spans greater than six feet.
• Determine if the ends of the joists NOT over an intermediate support, are laterally supported by full-depth, 2-inch thick solid blocking, a header, band or rim joist, or to adjoining stud.
• Ensure that 6' - 8' minimum headroom exists in all stairways.
• Verify that floor penetrations are properly fire safed with approved materials.
• Verify that spray on fire protection for structural steel members is applied completely.
• Verify that exterior wall veneer balloon framing is properly fire stopped.
• Verify that interior shaft walls are configured per the approved plan.
• Verify that Plumbing, Electrical and Fire Protection rough-in inspections have been approved. 

Exterior Inspections

• Ensure that the bold, readily visible, street address is posted. Numbers/letters should be 6 inches minimum in height.
• Verify exits are properly identified with exit signs and have required hand / guardrails.
• Verify Handicapped accessibility is properly installed (correct slope) and identified; signs have minimum 7 foot clearance from ground.
• Collect all required structural certifications as enumerated on Plan Reviews approval letter.
• Ensure that sediment control measures are protecting adjoining properties.
• Ensure that the finished grade, down spouts, and splash blocks are directed away from the building.
• Determine that the lot improvements, i.e., paving, walks, storm water facilities, entrance culverts, landscaping, miscellaneous structures, etc., are in substantial compliance with the permit documents.
• Determine that the building is sealed against moisture penetration, i.e., painting, caulking and flashings.
• Determine that chimneys and flues are terminated in accordance with applicable codes and manufacturers instructions.
• Ensure that approved window screens are in place, where applicable.
• Ensure that no emergency vehicles or private homeowner access to the new building is hindered by construction materials or equipment.

Interior Inspections

• Ensure that all required inspection approvals have been secured, i.e., Plumbing, Electrical, HVAC, Fire Protection and Grading (when applicable).
• Verify floor levels in stair towers are properly identified.
• Ensure that the basement is DRY.
• Determine that handrails and guardrails are installed, where required, at the proper elevations with the required maximum picket/dowel spacing, and that the handrails have the proper handgrip sections, are continuous and are terminated correctly.
• Ensure that there are interconnected, approved battery backup smoke alarms in each sleeping room, outside of each area in the vicinity of the bedrooms and on each additional story of the dwelling, including the basement (when applicable).
• Determine that safety glazing is installed in all hazardous locations including hinged, fixed, sliding and storm doors, in fixed panels adjacent to doors, along walking areas (except when horizontal bar is used), in showers and tub enclosures and any glazing less than 60 inches above a drain inlet of a shower or tub.
• Ensure that the insulation package has been completed in all spaces including crawl spaces, basements, and attics.
• Ensure that 6'8" minimum headroom still exists in all stairways.

• Determine if the soil has a minimum bearing capacity of 2000 psf or if the footing is designed to engineering standards.
• Verify that the soil in the area of the footings is consistent (No soft spots, color changes, exposed strata, debris, or water).
• Verify that weather conditions are suitable for placing concrete or that proper precautions are used to adjust for adverse conditions.
• Compare actual dimensions with those on approved drawings.
• Determine if the bottom of the footing is below the frost line; unless otherwise protected (30" below finished grade).
• Verify that the ground wire or horizontal ground rod is in place where applicable.
• Verify that reinforcement steel is placed in accordance with approved drawings.
• Verify that approved dowels are in place where poured foundation walls are used.
• Prior approval must first be obtained when professional third party inspectors are used. Submit the engineer's certification to the Building Inspections office as soon as possible. All engineer's certifications shall list the building address, permit number and have the engineer's original stamp and signature.

• Determine if the required base material is four inches thick and consists of clean, graded sand, gravel, crushed stone or crushed slag.
• Determine if a vapor retarder is provided except for slabs located in a detached garage, utility building, or unheated accessory structure.
• If a vapor retarder is required, then determine if it is a 6 mil visqueen vapor retarder with joints lapped not less than six inches and placed at the bottom of the slab.
• Determine if the slab is a minimum of 3½ inches thick.
• Verify that interior concretes compressive strength at 28 days is at least 2,500 psi and 3,000 psi air entrained, when exposed to weather conditions. (Check delivery tickets)
• Check and note how the radon depressurization method will be vented: Gas tight “T” into aggregate or through the sealed sump cover.
• Verify that required and approved perimeter slab insulation is installed properly. 

Framing

Special Note: All necessary certifications and new home wall check drawings must be received at the building inspection office prior to requesting a frame inspection. All approved plans, roof and floor truss drawings and manufacturers specifications must be on site for the frame inspection.

• Compare joists species, grade, size, clear span and spacing of the joists with design specifications, approved drawings, codes, and manufacturers details.
• Compare headers and girders species, grade, size, clear span and spacing of the joists with design specifications, approved drawings, codes, and manufacturers details.
• Determine if the length of the bearing point is at least 1½ inches if the supporting element is wood or metal, or at least 5 inches if masonry.
• Determine if the joists are supported by an approved and properly installed joist header or ledger strips at least 2 inches by 2 inches, where joists are framed into the side of a wood beam or girder.
• Verify that there are no notches in the middle 1/3 of any joist span.
• Verify that notches on the ends of the joist do not exceed ¼ the depth of the joist.
• Verify that notches between the ends and middle 1/3 of the span do not exceed 1/6 the depth of the joist.
• If the top notches in the ceiling joists exceed 1/6 of the joist depth, then verify that they are located no further than the joist depth from the face of the support and that they do not exceed 1/3 of the joist depth.
• Verify that notches are not longer than 1/3 of the joist depth.
• Verify that the tension side of the member is four inches or greater in nominal thickness and is not notched, except at the ends of the member.
• Check that there are no bored holes within two inches of the top or bottom of the joist.
• Confirm that the diameters of bored holes do not exceed 1/3 of the depth of the joist.
• Check that there are no holes within two inches of another hole or notch. Determine if the joists are toe nailed to the sills or girders with at least 3-8d nails.
• If posts are used to support beams and girders, then determine if positive connections are installed.
• Determine if the joists parallel to the bearing walls above are doubled OR an equivalent beam is used as a minimum.
• Determine if the header span is greater than four feet. If so, then the header is to be at least doubled.
• Determine if approved joist hangers are used to connect the header and trimmer joists for header joist spans greater than six feet.
• Determine if the ends of the joists NOT over an intermediate support, are laterally supported by full-depth, 2-inch thick solid blocking, a header, band or rim joist, or to adjoining stud.
• Ensure that 6' - 8' minimum headroom exists in all stairways.

Roof Framing Inspections

Special Note: All approved building permit drawings, manufacturers shop drawings and details, necessary certifications and prior approval of location survey submission must be in place prior to requesting this roof framing inspection.

• Compare rafter size, span, species, grade, and spacing with design specifications/drawings and code.
• Examine rafter lumber four inches and wider to verify that there are no notches on the tension side EXCEPT at either end.
• Examine rafters to verify that there are NO notches in the middle 1/3 of the span, and notches located in the top or bottom of the rafters do NOT exceed 1/6 the rafter depth. Verify that notches are no longer than 1/3 of the rafter depth.
• Examine end notches to determine that they do NOT exceed ¼ the depth of the rafter.
• Examine rafters to determine that there is NO bored hole within two inches of the top or bottom of the rafter or within two inches of another hole or notch.
• Examine bored hole (more than two inches from the top OR bottom of the rafter) to determine that the hole diameter does NOT exceed 1/3 the depth of the rafter.
• If there are notches on cantilevered rafters, verify that the remaining portion of the rafter is not less than four inch nominal and the length of the cantilever is not more than 24 inches.
• If rafter ties are used, then verify that:
• 1. Rafter ties are not more than 4' - 0" on center;
  2. Face nailed to rafter with 3-8d nails;
  3. Tie is a minimum of a 1 x 4. 
• Determine that roof rafters are toe nailed to plate with 2-16d nails.
• Examine the ridge board to determine that the thickness is at least one inch nominal AND that the depth is not less than the cut end of the rafter.
• Determine that the roof rafters are toe nailed to ridge board with 4-16d OR face nailed with 3-16d nails. If there is no ridge board, then the rafters must be framed together with a gusset plate.
• If there are hip and valley rafters, then determine that the thickness is not less than two inches nominal and that the depth is not less than the cut end of the roof rafter.
• Determine if the roof rafters are toe nailed to hip and valley rafters with 4-16d nails or face nailed with 3-16d nails.
• Determine if the end of each rafter has at least 1½ inches of bearing on wood OR three inches of bearing on masonry.
• Determine if the rafters having a depth to thickness ratio exceeding 5:1 have lateral support at bearing points to prevent rotation.
• If the rafters have a nominal depth to thickness ratio exceeding 6:1, determine if the rafters are laterally supported by either solid blocking, diagonal bridging (wood or metal), OR 1 x 3-inch bridging nailed to the rafter at intervals no more then 8 feet.
• If the header in the roof opening is greater than four feet, then determine if the header and trimmer rafters are doubled and approved joist hangers are used to connect the header to rafters.
• Determine if the roof truss is built and installed to comply with the manufacturers design truss drawings.
• Determine if the roof truss is braced per truss design drawings.
• Check that NO roof truss member is cut, notched, drilled, spliced OR altered, unless approved by a registered design professional.
• Determine if the trusses are bearing at the proper bearing points marked on the truss.
• Determine that the girder trusses are fastened together to comply with the manufacturers design.
• Ensure that a minimum 22" x 30" attic access is provided and that an elevated platform and catwalk is provided for equipment maintenance with the service areas 30" x 30" minimum, when applicable.

Wall Framing Inspections

Special Note: All approved building permit drawings, manufacturers shop drawings and details, necessary certifications and prior approval of location survey submission must be in place prior to requesting this wall framing inspection.

• Compare bearing studs (size, spacing, grade, and species) to the requirements indicated on the approved plans and code tables.
• Determine that exterior walls have a top plate that is doubled and overlapped at the corners and intersects with the bearing walls. The top plate end joints must have a 24 inch minimum offset.
• If a single top plate is used, check that it is tied at joints, corners and intersecting walls with a 3-inch x 6-inch x 0.036-inch-thick galvanized steel plate nailed to each wall with 8-16d nails AND rafters or joints are centered within one inch of supporting studs.
• Determine that the cripple walls are less than 14 inches in height and are sheathed with plywood or structural panels on at least one side and attached to both top and bottom wall plates or constructed of solid blocking.
• If the foundation cripple walls exceed four feet in height, determine if the stud framing complies with the size requirements for an additional story by code.
• If the notches in the top plates exceed 50 percent of their width, then verify that the top plate is reinforced with a galvanized metal tie not less than 0.054 (16 gage) inch thick and 1.5 inches wide fastened across the cut plate with 6-16d nails (three at each end).
• Compare the actual headers and spans to the building code table for maximum spans allowed.
• Determine if a 1 x 4-inch let-in or approved metal strap bracing is located at each corner (end) AND at least every 20 feet on center.
• Determine if each 1 x 4-inch brace is:      
  1. Placed at an angle from horizontal between 45 and 60 degrees.
  2. Let into both top and bottom plates and adjoining studs.
  3. Correctly fastened. Correctly fastened.
  4. If metal bracing is used, then verify that the metal braces are installed and mounted in accordance with the manufacturer’s specifications and/or installation instructions. 

• Determine if drain tiles or pipes are installed at or below the area to be protected.
• Determine if drain tiles or pipes discharge into an approved drainage system (sump pit or daylight).
• Determine if drain tiles or pipes are covered by at least six inches of gravel.
• If interior drain tile is used in lieu of exterior, ensure that 2" diameter pipes 4' on center are extended through foundation into a filter material covered stone filter on the exterior side.
• Determine that all exterior drain tile and gravel is protected with filter material prior to backfill.
• Determine that adequate crawl space ventilation is provided.
• Verify that required and approved emergency escape and rescue window(s) or exterior door(s) are provided in all new basements. 

• Ensure that insulation is applied to the band/rim board above the basement walls.
• Determine that crawl space is adequately ventilated and the floor system is insulated to R-19 with the vapor barrier facing the warm side.
• Ensure that all basement walls exposed to the exterior temperatures are insulated to R-10 and faced with an approved vapor barrier.
• Ensure that all penetrations in the basement walls and ceiling are sealed with approved sealants.
• Ensure that any access to crawl space is sealed with a tight fitting gasketed panel.
• Ensure that any plumbing pipes projecting into the crawl spaces are protected against freezing and all duct work within the crawl spaces are properly insulated.
• Ensure that all exterior walls are insulated to R-20.
• Ensure that all wall penetrations, i.e., windows, pipes, etc., are chinked and sealed.
• Ensure that all fire stopping is in place, i.e., between floors, bulkheads, under tubs, fireplace flues, pipes, etc.
• Ensure that ventilation baffles are installed for blown-in insulation and where cathedral ceilings are used.
• Determine that adequate attic ventilation is provided, i.e., gable end vents, ridge venting, soffit venting, mechanical venting, etc.
• Ensure that sprinkler pipes are blanketed.
• Ensure that roof is insulated to R-49 and that mechanical equipment and ducts do not hinder this performance requirement.
• When an attic area exceeds 30 square feet and has a clear height of 30 inches or more, then determine if a readily accessible attic access opening measuring at least 22 by 30 inches has been provided.
• Verify that insulation shields are installed around all class A & B flue vents and extend at least 2" above the insulation in the attic. 

Exterior Inspections

• Ensure that the street address is posted. Numbers/letters should be 3 inches in height minimum.
• Ensure that sediment control measures are protecting adjoining properties.
• Ensure that the finished grade, down spouts, and splash blocks are directed away from the building.
• Determine that the lot improvements, i.e., paving, walks, storm water facilities, entrance culverts, landscaping, miscellaneous structures, etc., are in substantial compliance with the permit documents.
• Determine that the building is sealed against moisture penetration, i.e., painting, caulking and flashings.
• Determine that chimneys are terminated in accordance with applicable codes and manufacturers instructions.
• Ensure that no emergency vehicles or private homeowner access to the new home is hindered by construction materials or equipment.
• Determine that all required hand and guard rails are properly installed.

Interior Inspections

• Ensure that all required inspection approvals have been secured, i.e., Plumbing, Electrical, HVAC, Fire Protection and Grading (when applicable).
• Ensure that the basement is DRY.
• Determine that handrails and guardrails are installed, where required, at the proper elevations with the required maximum picket/dowel spacing, and that the handrails have the proper handgrip sections, are continuous and are terminated correctly.
• Ensure that there are interconnected, approved battery backup smoke alarms in each sleeping room, outside of each area in the vicinity of the bedrooms and on each additional story of the dwelling, including the basement.
• Determine that safety glazing is installed in all hazardous locations including hinged, fixed, sliding and storm doors, in fixed panels adjacent to doors, along walking areas (except when horizontal bar is used), in showers and tub enclosures and any glazing less than 60 inches above a drain inlet of a shower or tub.
• Ensure that the insulation package has been completed in crawl spaces, basements, and attics.
• Ensure that the enclosed accessible space under the stairs is protected with ½ inch drywall on the enclosed side.
• Ensure that 6' 8" minimum headroom still exists in all stairways.
• Ensure that stairs have 8¼ inch maximum risers and 9 inch minimum treads.
• Ensure that sump pit and crawl space access are sealed and that the radon vent pipes are labeled “Radon Reduction System” both in the basement and attic.
• Ensure that a required fire separation wall for an attached garage is complete. 

Fireplaces

Special Note for Masonry Fireplaces: See accompanying Howard County Building Code, Figure R1003.1 and its corresponding Table R1003.1 for Masonry Chimney details.

• At the throat inspection, determine that required materials, thicknesses, and air space between the flue liner and the interior face of the masonry chimney wall are in place prior to starting up with the flues and the chimney.
• Ensure that the job supervisor and the mason are aware of the requirements for clearances to combustibles, and the termination dimensions outlined in the chimney details in the code.
• Determine that there is a proper chimney clean out in the chimney-only construction.
• Determine that the thimble is secure and does not extend beyond the wall of the liner.
• Ensure that the combustible concrete forms under the hearth have been removed.
• Determine that the adequately sized exterior combustion air supply is delivered through a listed combustion air duct, taken from below the firebox floor level and delivered to within 24 inches of the firebox opening on or near the floor.
• All masonry fireplace throat shall be parged smooth.

Factory-Built Fire Place and Chimney Inspections

• Determine that factory-built fireplaces and chimneys are listed, labeled, installed and terminated in accordance with the conditions of the listing and the manufacturers instructions.
• Ensure that the required floor-to-floor fire blocking is secure and tight.
• Ensure that clearances to combustibles are addressed. 

Deck Footing Inspections

• See Deck Guide.
• Determine that the footings are a minimum of 30 inches below the finished grade, and in compliance with the deck attachment and construction guidelines issued with your permit by the Howard County Permits Office and the Howard County Building Code.

Deck Framing Inspections

• Determine that all materials are pressure treated or are otherwise weather proof, and that beams, columns, joists, decking, bolts, nailing, connections, and attachments are placed in accordance with the deck attachment and construction guidelines issued with your permit by the Howard County Permits Office and the Howard County Building Code.
• Decks, exceeding the parameters of the issued guidelines, must have prior approval from the Howard County Plan Review Division.
• Determine that all nails, screws, bolts/washers and nuts, hangers, connectors and flashing used with AZQ pressure treated products are proper.

Deck Final Inspections

• Determine that all guardrails, handrails, stairs, landings, flashings, attachments, and spacing is in accordance with the deck attachment and construction guidelines issued by the Howard County Permits Office and the Howard County Building Code.

• Determine that bonding and grounding have been inspected and approved by an electrical inspector prior to allowing any concrete placement for foundations, walls, decks and slabs.
• Ensure that all reinforcement is in-the-clear and free from mud and dirt, when applicable.
• Determine that permanent or portable spas and/or hot tubs have adequate structural support.
• Ensure that the barrier requirements listed below are complied with:
  1. The top of the barrier shall be at least 48 inches (1219 mm) above grade measured on the side of the barrier which faces away from the swimming pool. The maximum vertical clearance between grade and the bottom of the barrier shall be 2 inches (51 mm) measured on the side of the barrier which faces away from the swimming pool. Where the top of the pool structure is above grade, such as an above ground pool, the barrier may be at ground level, such as the pool structure, or mounted on top of the pool structure. Where the barrier is mounted on top of the pool structure, the maximum vertical clearance between the top of the pool structure and the bottom of the barrier shall be 4 inches (102 mm).
  2. Openings in the barrier shall not allow passage of a 4-inch diameter (102 mm) sphere.
  3. Solid barriers which do not have openings, such as a masonry or stone wall, shall not contain indentations or protrusions except for normal construction tolerances and tooled masonry joints.
  4. Where the barrier is composed of horizontal and vertical members and the distance between the tops of the horizontal members is less than 45 inches (1143 mm), the horizontal members shall be located on the swimming pool side of the fence. Spacing between vertical members shall not exceed 1.75 inches (44 mm) in width. Where there are decorative cutouts within vertical members, spacing within the cutouts shall not exceed 1.75 inches (44 mm) in width.
  5. Where the barrier is composed of horizontal and vertical members and the distance between the tops of the horizontal members is 45 inches (1143 mm) or more, spacing between vertical members shall not exceed 4 inches (102 mm). Where there are decorative cutouts within vertical members, spacing within the cutouts shall not exceed 1.75 inches (44 mm) in width.
  6. Maximum mesh size for chain link fences shall be a 2.25 inch (57 mm) square unless the fence is provided with slats fastened at the top or the bottom which reduce the openings to not more than 1.75 inches (44 mm).
  7. Where the barrier is composed of diagonal members, such as a lattice fence, the maximum opening formed by the diagonal members shall not be more than 1.75 inches (44 mm).
  8. Access gates shall comply with the requirements of Items 1 through 7 above, and shall be equipped to accommodate a locking device. Pedestrian access gates shall open outward away from the pool and shall be self-closing and have a self-latching device. Gates other than pedestrian access gates shall have a self-latching device. Where the release mechanism of the self-latching device is located less than 54 inches (1372 mm) from the bottom of the gate, the release mechanism and openings shall comply with the following:
     1. The release mechanism shall be located on the pool side of the gate at least 3 inches (76 mm) below the top of the gate, and
     2. The gate and barrier shall have no opening greater than 0.5 inch (12.7 mm) within 18 inches (457 mm) of the release mechanism.
  9. Where a wall of a dwelling serves as part of the barrier, one of the following conditions shall be met:
     1. The pool shall be equipped with a powered safety cover in compliance with ASTM F1346; or
     2. All doors with direct access to the pool through that wall shall be equipped with an alarm which produces an audible warning when the door and its screen, if present, are opened. The alarm shall sound continuously for a minimum of 30 seconds immediately after the door is opened and be capable of being heard throughout the house during normal household activities. The alarm shall automatically reset under all conditions. The alarm system shall be equipped with a manual means, such as touch pad or switch, to temporarily deactivate the alarm for a single opening. Such deactivation shall last for not more than 15 seconds. The deactivation switch(es) shall be located at least 54 inches (1372 mm) above the threshold of the door; or
     3. Other means of protection, such as self-closing doors with self-latching devices, which are approved by the governing body, shall be acceptable so long as the degree of protection afforded is not less than the protection afforded by Item 9.1 or 9.2 described above.
  10. Where an above ground pool structure is used as a barrier or where the barrier is mounted on top of the pool structure, and the means of access is a ladder or steps, then:
      1. The ladder or steps shall be capable of being secured, locked or removed to prevent access, or
      2. The ladder or steps shall be surrounded by a barrier which meets the requirements of Items 1 through 9 above. When the ladder or steps are secured, locked or removed, any opening created shall not allow the passage of a 4-inch diameter (102 mm) sphere.
• When alarms are needed under Section 9, Howard County Inspections have approved three manufacturers model types; Poolguard door alarm (www.poolspa.com/poolguard),Yardguard gate alarm and S.T.I. Safe Pool Alarms (www.sti-usa.com).
• Determine that the electrical final inspection and plumbing final inspection (for when pool heater is installed) are approved prior to the final approval. 

• If masonry foundation walls enclose habitable or usable space, then verify that they are covered with 3/8 inch thick parging made of Portland cement from the top of the footing to finished grade.
• When parged masonry or concrete foundation walls enclose habitable or usable space, then verify that dampproofing of approved material is applied from footing to finished grade over the concrete or parged masonry walls.
• If a high water table or other severe soil water conditions exist, then verify that an approved waterproofing membrane was applied from the footing to the finished grade over the concrete or parged masonry footing walls. Membrane joints must be lapped and sealed.
• Determine that, if anchor bolts are used to secure the plate to the foundation wall, they are not more than six feet on center, not more than 12 inches from the end of each plate, and at least ½ inch in diameter.
• If other foundation anchorage is used, determine if it is an approved type and that it is installed per the manufacturers installation manual.
• Verify that required and approved emergency escape and rescue window(s) or exterior door(s) are provided in all new basements.
• Verify that crawl space is adequately ventilated.
• Ensure that the proper access is provided into the crawl-space; either 18 x 24 inches through the floor or 16 x 24 inches through the wall.
• Ensure that if the elevation inside the crawl-space is lower than the exterior finish grade that an approved drainage system has been installed.
• Verify using section R-404 of the International Codes that the masonry or concrete foundation wall supporting unbalanced fill are designed and installed properly

Sheathing

Special Note: Advise the job Supervisor that flashings and weep holes are required in all masonry walls, at foundations, over doors and windows, and as a protection for attached wood trim and decks.

• Determine from the grade mark if the span rating and joists spacing are adequate.
• Determine if the panels are continuous over two or more spans and if the long dimension is perpendicular to the supports.
• Determine if the unsupported edges have tongue and groove joints OR blocking with lumber UNLESS a ¼-inch underlayment is installed OR a ¾-inch wood finish floor is used.
• If the panel is ¾ inch thick or less, then determine if 6d deformed nails or 8d common nails are spaced 6 inches on center at edges and 12 inches on center at intermediate supports.

Roof Sheathing Inspections

• Determine from the grade mark on the wood structural panel that it is an exterior type of sheathing and the span rating and joists spacing are adequate.
• Determine if the panels are continuous over two or more spans.
• Determine if the panel long dimension is perpendicular to the supports.
• Determine if the panel edges are supported with solid blocking or an approved edge support (panel clips).
• Check for grade mark and proper installation of fire-retardant-treated plywood, taking strength reduction factors into consideration.
• If the panel is 5/16 inch to ½ inch thick, then determine if 8d common nails spaced 6 inches on center at the edges, and 12 inches on center at the intermediate supports are in place.

Wall Sheathing Inspections

Special Note: Advise the job Supervisor that flashings and weep holes are required in all masonry walls, at foundations, over doors and windows, and as a protection for attached wood trim and decks.

• Determine from the grade mark if the particle board or plywood is designated for use as wall sheathing on the exterior.
• Determine that the maximum stud spacing is 16 inches for particle board and complies with the grade mark for plywood.
• Determine if all panel edges are supported.
• Determine if the particle board wall sheathing has 1/16-inch expansion gaps between each adjoining panel edge.
• Determine if 6d common nails spaced 6 inches on center at the edges and 12 inches on center at the intermediate supports are in place.
• If the panels are to be used for wall bracing, then determine if the type, locations, and amount of bracing is per Section R-602 of the IRC Code.

• Ensure that the building sanitary drains and fixture branches are correctly sized, joined, graded, trapped and supported; that they are of approved materials, properly bedded, and supported prior to backfill.
• Ensure that building storm and condensate drains are correctly sized, joined, adequately graded, properly bedded, and supported prior to backfill.
• Ensure that the means to remove storm water/condensate is provided (sump pump, daylight, or other approved means).
• Ensure that any in-ground building water lines are sized correctly; are of approved material and are joined properly; are adequately protected against contamination and corrosion; and meet the separation requirements of the Plumbing Code.
• Ensure that backwater valve protection is provided, when required.
• Ensure that sump pumps and sewage ejectors , when required, are accessible for maintenance; are properly vented and discharge to an approved watercourse.

• Ensure that the building main sanitary drain, branches, and venting systems are sized adequately, graded and properly supported; protected from damage, and installed in accordance with the approved plans.
• Ensure that trap arms for drains, lavatories and sinks are the proper lengths.
• Ensure that storm/condensate drains are sized adequately; of approved materials and joints; supported and protected from damage, and directed to an approved outfall.
• Ensure that the water distribution system is sized adequately; of approved materials and joints; supported and protected from damage and freezing, complete with all the required valves and access, and is installed in accordance with the approved plans.
• Ensure that cleanouts are provided where required on all drain systems and are accessible.
• Ensure that all the materials used are compatible with each other (pipe, hangers, nail plates, joints, etc.).
• Ensure that the washing machine and water heater drain pans, when required, have an indirect drain with a suitable discharge location.
• Ensure that, when required, the pressure reducing valves are in the proper place.
• Ensure that, when required, backflow prevention devices are installed in accordance with the approved plans and that they have been tested and certified by an approved licensed technician.

Exterior Inspections

• Ensure that the Construction Inspection Division of the Department of Public Works has provided certification of proper installation of site utilities under their jurisdiction.
• Determine that sanitary sewer cleanouts and water valve curb boxes are of approved materials, are properly located, and are installed flush with finished grade.
• Ensure that required gas meters and regulators are in place.
• Ensure that all required vacuum breakers and approved backflow prevention devices are installed on hose bibbs, yard hydrants, lawn sprinkler systems, etc.
• Ensure that the sump pump discharges onto a splash block at a properly graded outfall.
• Determine that all flue terminations are installed in accordance with the manufacturer's recommendations, the Howard County Plumbing Code, and the Howard County Mechanical Code.

Interior Inspections

• Ensure that all plumbing fixtures have been properly set, are damage free, clean, properly caulked and function properly.
• Ensure that all plumbing fixtures are properly connected, trimmed out, trapped, valved, leak free, and that hot and cold are not reversed.
• Ensure that, when required, the washing machine and water heater(s) are properly installed including drain pans and drain pan discharge lines if required.
• Ensure that dishwashers are installed in accordance with the manufacturer’s instructions, are properly valved, and discharge via an air cap, high drain loop, or other approved method.
• Ensure that all gas appliances have an approved shut-off valve within 6 feet of the appliance, sufficient combustion air, and are installed in accordance with the manufacturer’s instructions left on site.
• Ensure that all plumbing lines, water, sewer, ventilation, gas, sprinklers, etc., are properly supported with the approved devices, are protected from damage and are leak free.
• Ensure that backwater valves and backflow preventors, where required, are of the approved type, properly installed and accessible.
• Ensure that elevated pressure gas regulators and manifolds are properly installed.
• Ensure that the water meter, pressure reducing valves, and isolation valves are all installed properly, are of approved materials, and are supported adequately.
• Obtain and complete water and sewer triangulation forms, and backflow device certifications, when applicable.
• Ensure that condensate drains and water heater temperature/pressure release valves are properly conveyed to an approved outfall.

• Ensure that the building sanitary drains are sized correctly; are of approved materials; joints, and traps; are adequately graded, properly bedded, and supported prior to backfill.
• Ensure that the building storm and condensate drains are sized correctly; are of approved materials; joints and traps; are adequately graded, properly bedded, and supported prior to backfill.
• Ensure that the means to remove storm water/condensate is provided (sump crock and pump, daylight, formal system).
• Ensure that any in ground building water lines are sized correctly; are of approved material and joints; and are adequately protected against contamination, corrosion and the separation requirement of the Plumbing Code.
• Ensure that backwater valve protection is provided, when required.
• Ensure that sewage ejectors are provided when required.

• Ensure that the building main sanitary drain, branches, and venting systems are sized adequately, graded and properly supported and protected from damage.
• Ensure that trap arms for drains, lavatories and sinks are the proper lengths.
• Ensure that storm/condensate drains are sized adequately; of approved materials and joints; supported and protected from damage, and directed to an approved outfall.
• Ensure that the water distribution system is sized adequately; of approved materials and joints; supported and protected from damage, complete with all the required valves and access.
• Ensure that cleanouts are provided where required on all drain systems.
• Ensure that all the materials used are compatible with each other (pipe, hangers, nail plates, joints, etc.).
• Ensure that the washing machine drain pans, when required, have a direct drain with a suitable discharge location.
• Ensure that, when required the septic system relief vent pipe is installed.
• Ensure that, when required, the pressure reducing valves are in the proper place.

Exterior Inspections

• Ensure that sanitary sewer cleanouts and water valve curb boxes are of approved materials, are properly located and are installed flush with finished grade.
• Ensure that required gas meters and regulators are in place.
• Ensure that all required vacuum breakers and approved backflow prevention devices are in place on hose bibbs, lawn sprinkler systems, etc.)
• Ensure that the sump pump discharges onto a splash block or other approved point at a properly graded outfall.
• Ensure that all flue terminations are installed in accordance with the manufacturer's recommendations, the Howard County Plumbing Code, and the Howard County Mechanical Code.

Interior Inspections

• Ensure that all plumbing fixtures have been properly set, are damage free, clean, properly caulked and function properly.
• Ensure that all plumbing fixtures are properly connected, trimmed out, trapped, valved, leak free, and that hot and cold are not reversed.
• Ensure that, when required, the washing machine and water heater(s) are properly installed including drain pans and drain pain discharge lines if required.
• Ensure that the dishwasher is installed in accordance with the manufacturer’s instructions, is properly valved, and discharges via an approved method. (Air gap, high drain loop)
• Ensure that all gas appliances have an approved shut-off valve within 6 feet of the appliance, sufficient combustion air, and is connected in accordance with the manufacturer’s instructions left on site.
• Ensure that all plumbing lines, water, sewer, ventilation, gas, sprinklers, etc., are properly supported with the approved devices, are protected from damage and are leak free.
• Ensure that backwater valves and backflow preventors, where required, are of the approved type, properly installed and accessible.
• Ensure that 2 pound gas regulator and manifold are properly installed.
• Ensure that the water meter, pressure reducing valve, and isolation valves are all installed properly, are of proper materials, and are supported adequately.
• Obtain and complete water and sewer triangulation forms, and any activated plumbing express permit (post card) permits, when applicable. Also leave backwater valve BWV location on the electrical panel.
• Ensure that condensate drains and water heater temperature/pressure relief valves are properly conveyed to an approved outfall.

• Ensure that Maryland State licensed personnel have installed the gas system.
• Conventional pressure gas piping (low pressure) - Ensure that all appliances are installed in accordance with the manufacturer’s installation instructions:
  • Ensure that appliances comply with NFPA 54/58 regarding btu load, size, clearances, venting, materials and category type.
  • Ensure that all appliance(s) are labeled specific to gas type delivered. Failure to label a conversion appliance shall result in a failed inspection.
  • Ensure that pipe hangers and supports, specific to pipe size and directional change, are provided.
  • Ensure that underground gas piping is protected by sleeves, mill wrapping, or as directed by NFPA 54/58 and that exterior above ground gas piping is protected from the elements as directed by NFPA standards.
  • Ensure that a 20 pound gas test has been provided on 30 minimum-60 maximum pound gauge for at least 12 hours before inspection, indicating a leak free system. Test gauge may not be damaged in any way.
• Elevated pressure gas piping (2 pound, 5 pound, etc.):
  • Ensure that all appliance(s) are installed in accordance with the manufacturer’s installation instructions and also comply with NFPA 54/58 regarding btu load, size, clearances, materials and category type.
  • Ensure that all appliance(s) are labeled specific to gas type delivered. Failure to label a conversion appliance shall result in a failed inspection.
  • Ensure that piping is supported, protected and installed in accordance with manufacturer’s specific instructions.
  • Ensure that underground gas piping is protected by sleeves, mill wrapping, or as directed by NFPA 54/58 and that exterior above ground gas piping is protected from the elements as directed by NFPA standards.
  • Ensure that a 20 pound gas test has been provided on a 30 minimum-60 maximum pound gauge for at least 12 hours before inspection, indicating a leak free system. Test gauge may not be damaged in any way.
  • Corrugated stainless steel tubing must strictly follow the manufacturer's installation instructions for length.

• Ensure that all flues are installed in accordance with both the manufacturer’s installation instructions and NFPA Subsection concerning exhaust gases.
• Ensure that both ventilation and combustion air is provided as set forth in the manufacturer's installation instructions and NFPA standards. 

Work Requiring Mechanical Permit

• Design versus actual field condition inspections:Supply and return boots placed to best suit the homes design and line drawing.
  • Correlate Manual “J8” and line drawing layout to actual composition of environment envelope. Insulation r-value, window characteristics, infiltration, grade level, chinking, and caulking will be considered.
  • Determine if duct size, length, and routing method (i.e. # elbows) meets the Manual J8. c.f.m. (cubic feet per. minute) requirement for all rooms in the home. If necessary, use an air duct calculator.
  • Match the Manual J8 and Line Drawing requirements to the actual environment.
• Thermostat is on interior wall and in close proximity to a return.
• Interior and exterior mechanical equipment are placed as described.
• Ductwork inspections:
  • If basement is to be un-finished only the boots need to be installed. Run-outs/branch ducts will be examined at final inspection. If boots are to be installed with run-outs, provide adequate protection against debris and damage by covering the boot opening.
  • Wall cavities and chases serving as returns ducts have the following items completed at close in for approval.
    1. Wall brackets must be installed.
    2. First and subsequent floors are not in the same chase.
    3. Holes must be cut in the floor or wall assemblies.
    4. Chase must be properly sealed so that no outside air can enter return cavity.
• Note: Returns cannot be taken from more than one floor via joist or wall cavities.  Supplies in unconditioned spaces shall be insulated with R8.  All other ducts in unconditioned spaces shall be insulated with R6.
• All trunk line duct are supported every 10 ft.
• Supply run outs are air tight with three screws equally spaced.
• Flex and other factory made ducts are supported in accordance with manufacturer instructions. (i.e. web strapping).
• Flexible Air connectors (non insulated duct) are less than 14 ft.
• All branch duct/run-outs are securely fastened with welds, mastics or tapes.
• Provisions are made to prevent the accumulation of condensation on the exterior of any ducts in non-conditioned space.
• Flexible and Class 1 ducts shall not pass through any walls, floors, ceilings or fire rated assemblies.
• Underground ducts are water tight, sized and installed properly.
• Kitchen stove vents and bathroom vents are installed and vented properly.
• All pre-fab flues including all fuel, b-vent, and single wall, are proper size. All clearance from combustibles are adhered to and proper height is maintained above the roof.
• Attic system inspections: (If the Manual J8 calls for a two zone system and the equipment is located on the top floor, i.e., closet or an attic, the following must be checked)
  • Copper line set run through floors to outdoor condenser are insulated and protected with nail plates.
  • Drain pan under equipment installed over finished space must be min. 1½" depth and not less than 3" larger than the units width and length.
  • Primary drain is proper size, has trap if required, and slope of ¼" per foot to discharge. Secondary drain is independent of primary to discharge in an approved drain or attic soffit, or overflow float switch is installed in low voltage circuit.
  • Control wiring to thermostat and outdoor unit is protected and placement of the thermostat is in accordance with the line drawing.
  • Attic access is adequately sized per Howard County Code.
  • A walkway plank of at least 36" is provided on the service side of the attic unit.
  • Attic has sufficient lighting and a service receptacle.

HVACR Final Inspections

• Design versus actual field condition inspection:
  • Check that equipment specified in Manual J8 matches that installed.
  • Match line drawing to field installation assuring location of all floor supply registers.
  • Set the thermostat and check for positive air flow from all supply registers and negative air flow from all return grilles.
  • Determine if manufacturers specifications for all HVAC equipment are located on site as required by law.
  • Check thermostat for proper installation, i.e., level and draft stopped.
• Ductwork inspections:
  • Check basement for supply registers and return air grilles and if present ensure basement is insulated.
  • Check return filter access for approved convenient location that is readily removable.
  • Check supply air boots for construction debris and drywall dust.
  • Check for excessive air leakage in all duct work.
  • Supply run-outs must be air tight with three (3) screws equally spaced in each joint.
  • Ducts going from conditioned to non-conditioned space are insulated as required by Howard County Code. The insulation must be vapor tight and installed on entire duct including boots.
• Humidifier Inspections:
  • Unit is level and mounted on proper pressure zone of the duct system.
  • Humidifier drains discharges water per Howard County Code.
  • Stop and Waste or equivalent valve is used to shut-off water supply.
  • Bypass humidifiers has a damper installed in the bypass duct assembly.
  • Humidstat is installed on the return duct upstream of the humidifier.
• Outdoor unit inspections:
  • Unit is positioned as to allow maximum condenser air inlet and exhaust per manufacturer installation instructions.
  • Unit is the proper distance from flue/exhaust terminations to prevent damage.
  • Disconnect within site of the unit and fused per the manufacturer’s installation instructions.
  • Slab is adequately sized to provide support and protection of the entire footprint.
  • Heat pumps are installed at least 6" above grade.
  • Condensers are above grade and level.
  • Proper btu (British thermal unit)/tonnage is installed per Manual J8 requirements.
• Evaporator coil inspections:
  • Coil is installed on a coil pan above the furnace burners and has slope to the condensate drain.
  • Coil housing box (plenum) is insulated .to prevent condensation.
  • All points of penetration thru the coil box are sealed in the appropriate manner. 
• Attic system inspections:
  • Check for condensate drainage to proper area(s) and trapping if required.
  • Equipment installed over finished living space is adequately protected by use of overflow/float switches and safety pans.
  • Ensure that equipment in attics are supplied with a light, receptacle, and accessible switch.
  • Determine if equipment is provided with approved access, walkways, and clearances.