Morganton_Point_Campground_Bathhouse_Plans.pdf

PROJECT LOCATION

PROJECT LOCATION

1. Precast Concrete Septic Tanks The following are minimum standards of design and construction for precast reinforced concrete septic tanks:

a) The minimum requirement for the liquid depth is 36 inches.

b) A minimum of nine inches freeboard is required, the freeboard being the air space between the top of the liquid and the bottom side of the lid or cap of the tank.

c) The length of the septic tank shall be at least one and one half (1½) times the tank width.

d) There may be a maximum of three-inlet opening knockouts in the tank: one opening or knockout shall be on the tank inlet end; knockouts on sidewalls of the inlet end are optional. Any knockout(s) shall leave a minimum concrete thickness of one inch in the tank wall. They shall accommodate a minimum of four- inch or a maximum of six-inch pipe. No knockouts or openings shall be permitted below the tank liquid level. Any inlet opening or knockout shall be positioned such that at least a one (1) inch clearance will exist between the top of any inlet tee and the bottom surface of the tank top or access opening insert. Both the inlet and outlet openings may have seals cast into the tank.

e) All plastic plumbing, appurtenances and fittings including the inlet and outlet tees and extension piping shall bear the certification mark of the National Sanitation Foundation International (NSF) certification mark for drain, waste and vent or sewer applications. Company products bearing the NSF mark demonstrate their continual compliance with NSF Standard 14 entitled, “Plastic Piping System Components and Related Materials”. As a minimum standard, all plastic pipe used in conjunction with the septic tank shall be type I schedule 40, polyvinyl chloride (PVC) meeting ASTM standard 2665 and bear the NSF certification mark for drain, waste and vent or sewer applications. Inlet and outlet pipes shall be sealed through use of a cast in place low-pressure pipe seal or equivalent neoprene gasket, flexible silicon adhesive or cement.

f) The tees shall extend down a minimum of 25% and a maximum of 50% of the total liquid depth. It shall extend at least 5 inches above liquid level. The installer shall be responsible for proper installation of the tees. The invert of the outlet tee shall be at least two inches lower in elevation than the invert of the inlet tee.

g) The minimum capacity of a septic tank shall be 1000 gallons with manufacturer tolerance of plus (+) or minus (-) four percent (4%). All tanks shall be provided with a concrete partition so that the tank contains two compartments. Tanks without cast in place partitions shall be provided with a concrete partition so that the tank contains two compartments.

At the intersection of the partition, for the type with a slip-in partition, the wall thickness at the intersection of the side wall may be reduced to two inches. The partition shall be located at a point not less than two-thirds (2/3) nor more than three-fourths (3/4) the length of the tank from the inlet end.

The partition shall provide adequate space for air or gas passage between compartments. The partition shall be cast in such a manner to leave a water passage equal to or greater than the inlet pipe. The passage shall be located below the liquid level a minimum of 25% and a maximum of 50% of the total liquid depth. The partition shall be reinforced through use of six inch by six-inch number 10 gage-welded wire. The reinforcing wire on cast in place partitions shall be bent to form an angle of 90 degrees on the ends in order to form a leg not less than four inches long. When the wire is placed in the mold the four-inch legs should lay parallel with the sidewall wire adjacent to it. It is recognized that there are other methods of constructing a partition or two-compartment tank. Any method other than the one described will be considered on an individual basis for approval by the Department. However, the tank wall thickness must be two and one-half inches thick throughout the tank except for knockouts and at the intersection of a slip-in type partition with the side walls, where it can be reduced to two inches and the top, which must be three and one-half inches (3 1/2") thick.

h) Tank Access Openings: Adequate access openings must be provided in the tank top, which may be either one or two-piece construction. Access shall be provided for cleaning or rodding out of the inlet and outlet pipe, for cleaning or clearing the air or gas passage space above the partition, an entrance for inserting the suction hose for tank pumping, and for routine filter maintenance as needed. This shall be accomplished by properly locating access hole openings having securable, removable covers over the inlet and outlet tees with each having a minimum opening of 15 inches and a maximum of 24 inches as the opening cuts the plane of the bottom side of the top of the tank. The upper surface of the access hole may extend to finished grade or to a depth no deeper than 12 inches below the finished grade. The access hole covers shall be designed and maintained to prevent water inflow; they shall be beveled on all sides in such manner as to accommodate a uniform load of 150 pounds per square foot without damage to the cover or the top of the tank. All below grade access hole covers shall have a handle of steel or other rot-resistant material equivalent in strength to a No. 3 reinforcing rod (rebar).

i) Tank Reinforcing: Where steel reinforcing is used, a minimum of six-inch by six-inch No. 10 gage welded steel reinforcing wire shall be used in the bottom, ends, and sides of the tank; in the top, three eigths inch (3/8") reinforcing rods shall be used with a spacing of 12 inches on center each way extending to a minimum distance of two and one half inches (2 1/2") and a maximum distance of three inches from the outside edge of the tank. The reinforcing wire shall be lapped at least six inches. Concrete cover shall be required for all reinforcement. Reinforcement shall be placed to maximize the structural integrity of the tank. The tank shall be able to withstand a uniform live loading of 150 pounds per square foot in addition to loads to which an underground tank is normally subjected. Examples of this are: the dead weight of the concrete and soil cover, active soil pressure on tank walls and the uplifting force of the ground water. Additional reinforcement shall be required when the loads on a concrete tank are exceeded by subjecting it to vehicular traffic or when the top of the tank is placed deeper than three feet below the finished grade.

It is recognized there are methods of reinforcing concrete with fiber in lieu of reinforcing wire; however, when fiber is used, the reinforcing in the top must contain 3/8 inch steel rods (rebar) as specified in the paragraph above. When used, fiber reinforcing shall be 100% virgin polypropylene; fibrillated fiber containing no reprocessed olefin materials, and it must be manufactured specifically for use as concrete secondary reinforcement. Volume per cubic yard shall equal a minimum of 0.1 percent (1.5 pounds). Fibers are for the control of cracking due to drying shrinkage and thermal expansion/contraction, reduction in permeability, increased impact capacity, shatter resistance, abrasion resistance and added toughness. Fiber lengths shall be graded as per manufacturer with a maximum length of two inches. Fibrous concrete reinforcement materials used shall produce concrete conforming to specifications where concrete is tested in accord with ASTM C-1116 TYPE III 4.15 and ASTM C-1116 (reference: ASTM C-1018) performance level 15 outlined in Section 21, Note #17.

j) The ends, sides and bottom of the tank must have a minimum thickness of two and one-half inches (2 1/2"). The top must have a minimum thickness of three and one half inches (3 1/2").

k) Compressive strength: A minimum 28-day concrete compressive strength of 4,000 pounds per square inch shall be used in the construction of the septic tank. The concrete shall achieve minimum compressive strength of 3,000 pounds per square inch prior to removal of the tank from the place of manufacture. It shall be the responsibility of the manufacturer to certify that this condition has been met prior to shipment.

A septic tank shall be subject to testing to ascertain the strength of concrete prior to its being approved for installation. Recognized devices for testing the strength of concrete include a properly calibrated Schmidt Rebound Hammer or Windsor Probe Test. Accelerated curing in the mold by use of propane gas or other fuels is prohibited, except in accordance with accredited methods and upon prior approval of The Department.

l) After curing, tanks manufactured in two sections shall be joined and sealed at the joint by using a mastic, butyl rubber, or other pliable sealant that is waterproof, corrosion-resistant, and approved for use in septic tanks. The sealant shall have a minimum size of one-inch nominal diameter or equivalent.

Before sealing, the joint shall be smooth, intact and free of all deleterious substances. Tank halves shall be properly aligned to ensure a tight seal. The sealant shall be provided by the manufacturer. Other methods of waterproofing tanks may be used as specifically approved in the plans and specifications for the tank.

m) Tank Markings: All tanks shall bear an imprint, cast or stamp in the wall at the right of the outlet within six inches of the top of the wall. It shall identify the manufacturer and indicate the liquid capacity of the tank in gallons.

n) Tank Figures: Figures DF-1, DF-2, and DF-3 provide specifications that meet or exceed minimum septic tank design requirements.

2. Precast Concrete Shiphon/Dosing Tanks Pump tanks shall meet the construction requirements for septic tanks with the following differences. See also Section E, Pages E-1 through E-6 and figures EF-4 through EF-10 of the Manual for On-site Sewage Management Systems.

a) Tanks shall be cast with a single compartment, or, if a partition is provided, the partition shall be cast to contain a minimum of two four-inch diameter circular openings, or equivalent, located no more than 12 inches above the tank bottom.

b) There shall be no requirement as to tank length, width, or shape, provided the tank satisfies all other requirements of this Section.

c) The invert of the inlet openings shall be located within 12 inches of the tank top. No freeboard shall be required in the pump tank.

d) After joining, tanks manufactured in two sections shall be sealed along the joint by using a mastic, butyl rubber or other pliable sealant that is waterproof, corrosion resistant and approved for use in septic tanks. The sealant shall have a minimum size of one-inch diameter or equivalent.

Before sealing, the joint shall be smooth, intact, and free of all deleterious substances. Tank halves shall be properly aligned to ensure a tight seal. The sealant shall be provided by the manufacturer. Other methods of waterproofing tanks may be used as specifically approved in the plans and specifications for the tank.

e) Tanks shall be vented and accessible for routine maintenance.

A watertight access with removable cover shall be provided over the pump with a minimum diameter of 24 inches.

The cover shall be beveled on all sides in such manner as to accommodate a uniform load of 150 pounds per square foot without damage to the cover or the top of the tank. All below grade covers shall contain at least a handle made of steel or other rot resistant material equivalent in strength to a number (No.) 3 reinforcing rod (rebar). The access cover should extend to finished grade or to no deeper than 12 inches below finished grade. The covers shall be designed and maintained to prevent surface water inflow. Larger or multiple access covers shall be provided when two or more pumps are required. There must be a threaded union on the pump discharge pipe that will allow pump removal without entry into the tank. Access lids and electrical controls shall be secured against unauthorized opening or ingress. Access risers shall be joined to the tank top and sealed in accordance with Paragraphs 1(l) and 2(d) of this Section.

f) Pump Tank Markings: All pump tanks shall bear an imprint, cast or stamp in the wall at the right of the outlet within six inches of the top of the wall. It shall identify the manufacturer and indicate the liquid capacity of the tank in gallons.

A

B

FLOOR PLAN

B

A

B

FOUNDATION PLAN

FRONT ELEVATION

END ELEVATION

REAR ELEVATION

111013 10

219A

22A

14A

13A

A-1

USDA FOREST SERVICE

SOUTHERN REGION

NO. DATEDRAWING NO.

DATE

DESIGNER

1 MAY 2015

B

SECTION

14A

LAV PLAN

LAUNDRY PLAN

SEAT

1 2

BLOCK VENT

HEAD

SILL

JAMB

BEAM

JAMB

A-2

USDA FOREST SERVICE

SOUTHERN REGION

NO. DATEDRAWING NO.

DATE

13A

SECTION

A

B

ELEVATION

LAVATORY SECTION

STEEL BRACKET

DETAIL

RIDGE VENT24

A-3

USDA FOREST SERVICE

SOUTHERN REGION

NO. DATEDRAWING NO.

DATE

JAMB

JAMB

JAMB

13A

JAMB

JAMB

HEAD

14A

HEAD

JAMB

JAMB

SILL

SILL

SILL

SECTION

SECTION

SILL

BEAM CONNECTOR

JAMB

9A

SECTION

22A

HEAD

JAMB

PORCH ROOF BEAM

25A

PORCH ROOF BEAM

A-4

USDA FOREST SERVICE

SOUTHERN REGION

NO. DATEDRAWING NO.

DATE

A-5

USDA FOREST SERVICE

SOUTHERN REGION

PLUMBING FIXTURE SCHEDULE

EQUIPMENT SCHEDULE ELECTRIC PANEL

PANEL SCHEDULE: PANEL A

NOTES

TOILET ROOM ACCESSORIES SCHEDULEDOOR & HARDWARE

1 2

15 16

EXTERIOR FINISHES

INTERIOR FINISHES

SHEETREVISIONS

NO. DATEDRAWING NO.

DATE

DESIGNER

1 MAY 2015

21 22 23 24

ROOF PLAN

25A

FRONT VIEW

FRONT PORCH TRUSS DETAIL

PORCH COLUMN DETAIL

A-6

USDA FOREST SERVICE

SOUTHERN REGION

SHEETREVISIONS

NO. DATEDRAWING NO.

DATE

ELECTRICAL PLAN

PLUMBING PLAN

PLUMBING PLAN

LEGEND

SHEET

U-1

REVISIONS

USDA FOREST SERVICE

SOUTHERN REGION

NO. DATEDRAWING NO.

DATE

DESIGNER

D.W.V. SCHEMATICWATER PIPE SCHEMATIC

SHOWER DRAIN SCHEMATIC (TYP.)