Basic Hose

Question 1

1.75” hose dry weight

Answer 1

i. A 50’ section weighs 18-19 lbs. dry

Question 2

1.75” hose wet weight

Answer 2

ii. A 50’ section weighs 71 lbs. full of water.

Question 3

1.75” has how many cubic inches of water?

Answer 3

1443 cuin

Question 4

1.75” gallons?

Answer 4

6.25 gallons

Question 5

1.75” threads per inch?

Answer 5

9 threads per inch

Question 6

2.5” dry weight

Answer 6

31-32 lb dry

Question 7

2.5” wet weight

Answer 7

138 lbs

Question 8

2.5” cubic inches

Answer 8

2945 cubic inches

Question 9

2.5” gallons?

Answer 9

12.75 gallons

Question 10

Threads per inch on a 2.5”

Answer 10

7.5 per inch

Question 11

5” couplings are made of ____

Answer 11

Aluminum

Question 12

5” uses

Answer 12

sexless Storz couplings

Question 13

400 bc

Answer 13

a. Ox gut was used.

b. Water forced out of gut by jumping or sitting on them

Question 14

1673

Answer 14

a. Leather tubes sewn together.

b. These hose leaked badly and broke under pressure

Question 15

1807

Answer 15

a. Riveted leather.
b. Reduced leakage, higher pressures, more water.
c. 40 to 50 feet in length total, weight of 85lbs empty.

Question 16

1821

Answer 16

a. James Boyd patented rubber lined, cotton webbed hose.
b. Cotton shell gave abrasion resistance and flexibility.
c. Rubber became brittle in cold weather and soft in heat

Question 17

1839

Answer 17

a. Charles Goodyear invented vulcanized (weatherproof) rubber.
i. Rubber + Sulphur + Heat = vulcanized rubber
b. Rubber was able to stay flexible at all temperatures.
c. Cotton shell gave strength coupled with flexibility and decreased bulk.
d. Widely used by 1871

Question 18

Today’s firehouse

Answer 18

a. Double jacket polyester shell.
b. Chemical treatments for mold and mildew resistance, etc.
c. Rubber lining
d. Seamless constructions.

Question 19

Describe TFD hose, specifically 1.75” and 2.5”

Answer 19

i. Measurement is the interior diameter.
ii. Has a continuous rubber inner core.
iii. Over-wrapped with 2 jackets of woven Dacron Polyester.
iv. The two woven jackets are independent of each other.
v. Treated with Hypalon polymer to resist mold and mildew.
vi. Mainly manufactured in 50’ sections.

Question 20

NFPA for hose

Answer 20

1961

Question 21

How much of 1.75” is on a TFD rig (min)?

Answer 21

650’ (transverse, manifold, bundles, handy folds, appartment folds, etc)

Question 22

How much of 2.5” is on a TFD rig (min)?

Answer 22

ten 50’ sections in each bed (1000ft total)

Question 23

2.5” uses

Answer 23

“i. 2 ½” Supply Lines

ii. 2 ½’ Fire Attack Lines
iii. Portable monitor
iv. Sprinkler and standpipe connections
v. Used in manifold lay
vi. Reverse lay
vii. Supply ladder pipe/High Rise/Large structure operations.
viii. One person folds

Question 24

How to clean hose gaskets

Answer 24

clean threads swivels and gaskets with wire brush and rinse with warm water.

Question 25

Describe booster/redline

Answer 25

"a. 1” diameter b. Rubber covered with fabric reinforced rubber liner. c. 200’ carried on Hose Reel. d. Manufactured in 50’ or 100’ sections. e. Pin Type couplings

Question 26

Describe wildland hose

Answer 26

"a. Wildland (brush) fires b. TFD carries only 1” wildland hose on pumpers. i. 2 x 100’ sections c. Single jacketed d. Circular bias woven 100% polyester hose, inner-lined w/ elastomer. e. Light and maneuverable f. Couplings are now NST to mate to our redline. "

Question 27

Describe suction hose

Answer 27

"a. Not used in the field by TFD except on Water Tender. b. Used at the test pit for annual pump test. c. 4 ½” and 6” d. Rubber covered. Fabric and plastic (Helix) reinforced. Rubber lined. e. Used for drafting from static sources. "

Question 28

Types of fittings

Answer 28

"1. Double female 2. Double male 3. Adapter couplings 4. Reducer couplings 5. Hose cap 6. Hose plug 7. Plain Wye 8. Gated Wye 9. Siamese connection"

Question 29

Double female

Answer 29

"a. Female fitting on both sides. b. Connects two male couplings together. "

Question 30

double male

Answer 30

"a. Male fitting on both sides. b. Connects two female couplings together. "

Question 31

adapter coupling

Answer 31

a.       Used to change from one type or style of threads to another.

Question 32

reducer coupling

Answer 32

"a. Used to reduce from one size to another. | b. Usually from 2 ½” to 1 ½”.

Question 33

hose cap

Answer 33

"a. Attaches to male thread. | b. Used to cap off an open outlet or a section hose.

Question 34

hose plug

Answer 34

"a. Attaches to a female coupling. | b. Used to cap off auxiliary suction inlets.

Question 35

plain wye

Answer 35

"a. Used to take two lines from one. | b. Reduces from a larger line to smaller lines.

Question 36

gated wye

Answer 36

Same as the Plain Wye, except that each outlet can be shut off independently.

Question 37

siamese connection

Answer 37

"a. Used to connect two or more lines into one. b. Siamese multiple smaller into a larger line. c. Most commonly used on portable master stream device and ladder pipe operations. d. Contain clapper valves to prevent backflow.

Question 38

2.5" gate valve

Answer 38

"a. Holds pressure from either direction. b. Uses a crank handle to lower/raise a gate into a wedge seat c. May be used on engines or inlets or any place where a 2.5” valve is required to control flow

Question 39

Hose damage types

Answer 39

Mechanical, chemical, thermal

Question 40

Mechanical damage

Answer 40

"a. Cuts, snags, and abrasions to the outer jacket. i. From dragging hose over rough surfaces. ii. Protect with hose rollers or salvage covers when possible. b. Damage to threads or swivels of couplings. i. Resulting from dropping or dragging couplings. c. Run over by a vehicle. i. Common, especially when lying flat. ii. May not appear damaged but must be placed out of service (tagged) and tested.

Question 41

Chemical hose damage

Answer 41

"a. Penetrates the jacket, breaking down the cement which holds the rubber lining to the jacket. b. Most common are gasoline, solvents, oils, grease, paints, and acids. c. Petroleum products and paints cause rapid deterioration of the rubber lining. d. Acids cause extensive damage to the jacket. e. If it damages your skin, it will damage your hose "

Question 42

Thermal hose damage

Answer 42

``` "a. Happens frequently b. Jacket becomes scorched. c. Rubber lining decomposes, burns, hardens, and cracks. d. Protect is against needless exposure. " ```

Question 43

Hose cleaning

Answer 43

"1. When dirty, wash with clean water and a brush. 2. When exceptionally dirty, clean with mild soap and water. 3. No solvents or petroleum products! 4. Hose stored or loaded should be dry. a. Prevents sulfuric acid production and the rusting of hose beds. "

Question 44

Hose care and maintenance

Answer 44

"1. Designed to provide no less than 10 years of service if cared for properly. 2. 20 year max service life (per NFPA) 3. Hose tested annually, and after suspected damage. 4. Length of service dependent on the care and maintenance it receives. 5. Stores dry hose out of direct sunlight. 6. Hose shall be washed and hung to dry in hose tower or ramp.