**TABLE 1316.2(1)**

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(b)]

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(b)]

^{1,2}For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa**Notes:**^{1}Table entries are rounded to 3 significant digits.^{2}NA means a flow of less than 10 ft^{3}/h (0.283 m^{3}/h).**TABLE 1316.2(2)**

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(c)]*

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(c)]*

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

* Table entries are rounded to 3 significant digits.

^{3}/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa* Table entries are rounded to 3 significant digits.

**TABLE 1316.2(3)**

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(d)]*

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(d)]*

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

* Table entries are rounded to 3 significant digits.

^{3}/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa* Table entries are rounded to 3 significant digits.

**TABLE 1316.2(4)**

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(e)]*

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(e)]*

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

* Table entries are rounded to 3 significant digits.

^{3}/h, 1 pound-force per square inch = 6.8947 kPa* Table entries are rounded to 3 significant digits.

**TABLE 1316.2(5)**

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(f)]*

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(f)]*

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

* Table entries are rounded to 3 significant digits.

^{3}/h, 1 pound-force per square inch = 6.8947 kPa* Table entries are rounded to 3 significant digits.

**TABLE 1316.2(6)**

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(g)]*

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.2(g)]*

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

* Table entries are rounded to 3 significant digits.

^{3}/h, 1 pound-force per square inch = 6.8947 kPa* Table entries are rounded to 3 significant digits.

**TABLE 1316.2(7)**

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(h)]

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(h)]

^{1,2}For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa**Notes:**^{1}Table entries are rounded to 3 significant digits.^{2}NA means a flow of less than 10 ft^{3}/h (0.283 m^{3}/h).^{3}Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

**TABLE 1316.2(8)**

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(i)]

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(i)]

^{1, 2}For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa**Notes:**^{1}Table entries are rounded to 3 significant digits.^{2}NA means a flow of less than 10 ft^{3}/h (0.283 m^{3}/h).^{3}Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

**TABLE 1316.2(9)**

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(j)]

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(j)]

^{1, 2}For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa**Notes:**^{1}Table entries are rounded to 3 significant digits.^{2}NA means a flow of less than 10 ft^{3}/h (0.283 m^{3}/h).^{3}Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

**TABLE 1316.2(10)**

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(k)]

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(k)]

^{2}For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa**Notes:**^{1}Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

^{2}Table entries are rounded to 3 significant digits.**TABLE 1316.2(11)**

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(l)]

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(l)]

^{2}For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa**Notes:**^{1}Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

^{2}Table entries are rounded to 3 significant digits.**TABLE 1316.2(12)**

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(m)]

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(m)]

^{3}For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa**Notes:**^{1}Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

^{2}Where this table is used to size the tubing upstream of a line pressure regulator, the pipe or tubing downstream of the line pressure regulator shall be sized using a pressure drop no greater than 1 inch water column (0.249 kPa).

^{3}Table entries are rounded to 3 significant digits.**TABLE 1316.2(13)**

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(n)]

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.2(n)]

^{2}For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa**Notes:**^{1}Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

^{2}Table entries are rounded to 3 significant digits.**TABLE 1316.2(14)**

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2(o)]

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2(o)]

^{1,2}For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa**Notes:**^{1}Table entries are rounded to 3 significant digits.^{2}Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing to the following equation:

*L*= 1.3

*n*, where

*L*is additional length (ft) of tubing and

*n*is the number of additional fittings, bends, or both.

^{3}EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.

**TABLE 1316.2(15)**

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2(p)]

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2(p)]

^{1,2}For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa**Notes:**^{1}Table entries are rounded to 3 significant digits.^{2}Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing to the following equation:

*L*= 1.3

*n*, where

*L*is additional length (ft) of tubing and

*n*is the number of additional fittings, bends, or both.

^{3}EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.

**TABLE 1316.2(16)**

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2(q)]

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2(q)]

^{1,2}For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa**Notes:**^{1}Table entries are rounded to 3 significant digits.^{2}Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing to the following equation:

*L*= 1.3

*n*, where

*L*is additional length (ft) of tubing and

*n*is the number of additional fittings, bends, or both.

^{3}EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.

**TABLE 1316.2(17)**

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2(r)]

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2(r)]

^{1, 2, 3, 4}For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa**Notes:**^{1}Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 0.75 psi (5.17 kPa), DO NOT USE THIS TABLE. Consult with regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator are capable of varying with flow rate.

^{2}CAUTION: Capacities shown in table are capable of exceeding maximum capacity for a selected regulator. Consult with regulator or tubing manufacturer for guidance.

^{3}Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing to the following equation:

*L*= 1.3

*n*, where

*L*is additional length (ft) of tubing and

*n*is the number of additional fittings, bends, or both.

^{4}Table entries are rounded to 3 significant digits.^{5}EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.

**TABLE 1316.2(18)**

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2(s)]

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.2(s)]

^{1, 2, 3, 4}For SI units: 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa**Notes:**^{1}Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 1 psi (7 kPa), DO NOT USE THIS TABLE. Consult with regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator are capable of varying with flow rate.

^{2}CAUTION: Capacities shown in table are capable of exceeding maximum capacity for a selected regulator. Consult with regulator or tubing manufacturer for guidance.

^{3}Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing to the following equation:

*L*= 1.3

*n*, where

*L*is additional length (ft) of tubing and

*n*is the number of additional fittings, bends, or both.

^{4}Table entries are rounded to 3 significant digits.^{5}EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.

**TABLE 1316.2(19)**

POLYETHYLENE PLASTIC PIPE [NFPA 54: TABLE 6.2(t)]*

POLYETHYLENE PLASTIC PIPE [NFPA 54: TABLE 6.2(t)]*

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

* Table entries are rounded to 3 significant digits.

^{3}/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa* Table entries are rounded to 3 significant digits.

**TABLE 1316.2(20)**

POLYETHYLENE PLASTIC PIPE [NFPA 54: TABLE 6.2(u)]*

POLYETHYLENE PLASTIC PIPE [NFPA 54: TABLE 6.2(u)]*

^{3}/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa

* Table entries are rounded to 3 significant digits.

**TABLE 1316.2(21)**

POLYETHYLENE PLASTIC PIPE [NFPA 54: TABLE 6.2(v)]*

POLYETHYLENE PLASTIC PIPE [NFPA 54: TABLE 6.2(v)]*

^{3}/h, 1 pound-force per square inch = 6.8947 kPa

* Table entries are rounded to 3 significant digits.

**TABLE 1316.2(22)**

POLYETHYLENE PLASTIC TUBING [NFPA 54: TABLE 6.2(w)]

POLYETHYLENE PLASTIC TUBING [NFPA 54: TABLE 6.2(w)]

^{2,3}For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa**Notes:**^{1}CTS = Copper tube size.^{2}Table entries are rounded to 3 significant digits.^{3}NA means a flow of less than 10 ft^{3}/h (0.283 m^{3}/h).**TABLE 1316.2(23)**

POLYETHYLENE PLASTIC TUBING [NFPA 54: TABLE 6.2(x)]

POLYETHYLENE PLASTIC TUBING [NFPA 54: TABLE 6.2(x)]

^{2,3}For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa**Notes:**^{1}CTS = Copper tube size.^{2}Table entries are rounded to 3 significant digits.^{3}NA means a flow of less than 10 ft^{3}/h (0.283 m^{3}/h).**TABLE 1316.2(24)**

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(a)]*

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(a)]*

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPa

* Table entries are rounded to 3 significant digits.

* Table entries are rounded to 3 significant digits.

**TABLE 1316.2(25)**

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(b)]*

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(b)]*

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPa

* Table entries are rounded to 3 significant digits.

* Table entries are rounded to 3 significant digits.

**TABLE 1316.2(26)**

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(c)]*

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(c)]*

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPa

* Table entries are rounded to 3 significant digits.

* Table entries are rounded to 3 significant digits.

**TABLE 1316.2(27)**

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(d)]*

SCHEDULE 40 METALLIC PIPE [NFPA 54: TABLE 6.3(d)]*

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 inch water column = 0.249 kPa

* Table entries are rounded to 3 significant digits.

* Table entries are rounded to 3 significant digits.

**TABLE 1316.2(28)**

SEMI-RIGID COPPER TUBING [NFPA 54:TABLE 6.3(e)]

SEMI-RIGID COPPER TUBING [NFPA 54:TABLE 6.3(e)]

^{2}For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPa

**Notes:**^{1}Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

^{2}Table entries are rounded to 3 significant digits.**TABLE 1316.2(29)**

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.3(f)]

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.3(f)]

^{2, 3}For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1000 British thermal units per hour = 0.293 kW, 1 inch water column = 0.249 kPa**Notes:**^{1}Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

^{2}Table entries are rounded to 3 significant digits.^{3}NA means a flow of less than 10 ft^{3}/h (0.283 m^{3}/h).**TABLE 1316.2(30)**

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.3(g)]

SEMI-RIGID COPPER TUBING [NFPA 54: TABLE 6.3(g)]

^{2}For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m

^{3}/h, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6,8947 kPa**Notes:**^{1}Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

^{2}Table entries are rounded to 3 significant digits.**TABLE 1316.2(31)**

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.3(h)]

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.3(h)]

^{1, 2}For SI units: 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 inch water column = 0.249 kPa

**Notes:**^{1}Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing to the following equation:

*L*= 1.3

*n*, where

*L*is additional length (ft) of tubing and

*n*is the number of additional fittings, bends, or both.

^{2}Table entries are rounded to 3 significant digits.^{3}EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.

**TABLE 1316.2(32)**

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.3(i)]

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.3(i)]

^{1, 2, 3, 4}For SI units: 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPa

**Notes:**^{1}Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 0.5 psi (3.4 kPa)[based on 13 inch water column (3.2 kPa) outlet pressure], DO NOT USE THIS TABLE. Consult with regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator are capable of varying with flow rate.

^{2}CAUTION: Capacities shown in table are capable of exceeding maximum capacity for a selected regulator. Consult with regulator or tubing manufacturer for guidance.

^{3}Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing to the following equation:

*L*= 1.3

*n*, where

*L*is additional length (ft) of tubing and

*n*is the number of additional fittings, bends, or both.

^{4}Table entries are rounded to 3 significant digits.^{5}EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.

**TABLE 1316.2(33)**

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.3(j)]

CORRUGATED STAINLESS STEEL TUBING (CSST) [NFPA 54: TABLE 6.3(j)]

^{1, 2, 3, 4}For SI units: 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 pound-force per square inch = 6.8947 kPa

**Notes:**^{1}Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 0.5 psi (3.4 kPa)[based on 13 inch water column (3.2 kPa) outlet pressure], DO NOT USE THIS TABLE. Consult with regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator are capable of varying with flow rate.

^{2}CAUTION: Capacities shown in table are capable of exceeding maximum capacity for a selected regulator. Consult with regulator or tubing manufacturer for guidance.

^{3}Table includes losses for four 90 degree (1.57 rad) bends and two end fittings. Tubing runs with larger numbers of bends, fittings, or both shall be increased by an equivalent length of tubing to the following equation:

*L*= 1.3

*n*, where

*L*is additional length (ft) of tubing and

*n*is the number of additional fittings, bends, or both.

^{4}Table entries are rounded to 3 significant digits.^{5}EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.

**TABLE 1316.2(34)**

POLYETHYLENE PLASTIC PIPE [NFPA 54: TABLE 6.3(k)]*

POLYETHYLENE PLASTIC PIPE [NFPA 54: TABLE 6.3(k)]*

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per hour = 0.293 kW, 1 inch water column = 0.249 kPa

* Table entries are rounded to 3 significant digits.

* Table entries are rounded to 3 significant digits.

**TABLE 1316.2(35)**

POLYETHYLENE PLASTIC PIPE [NFPA 54: TABLE 6.3(k)]*

POLYETHYLENE PLASTIC PIPE [NFPA 54: TABLE 6.3(k)]*

* Table entries are rounded to 3 significant digits.

**TABLE 1316.2(36)**

POLYETHYLENE PLASTIC TUBING [NFPA 54: TABLE 6.3(m)]

POLYETHYLENE PLASTIC TUBING [NFPA 54: TABLE 6.3(m)]

^{2}
For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1000 British thermal units per
hour = 0.293 kW, 1 inch water column = 0.249 kPa

**Notes:**^{1}CTS = Copper tube size.^{2}Table entries are rounded to 3 significant digits.