Volume 1: Expedient Methods, Expedient Field Construction, & Airfields, Revetments,and Shelter Door.

Question 1

Structural shoring and bracing; Guying: A properly installed clip develops up to 1. —- of the rope strength. The size of the wire rope dictates the number of clips used and their 2.—-

Answer 1

1. 80%
2. 5/8-inch rope and four clips spaced 4 1/2 inches 3/4- or 7/8-inch rope. This prevents the rope from kinking and fraying due to friction.

Question 2

Structural shoring and bracing; Jacking: Measure the distance from the top of the Jack to the floor (base) and cut the timber 1.—-than this measurement… Raise the cut timber into position and drive several wedges into the 2.—- between the top of the timber and the damaged beam to secure the timber into position.

Answer 2

1. 1/2 inch shorter
2. 1/2-inch gap

Question 3

Quick-fix techniques; fire damaged roofing components: Charred would should only be used if at least 1.—- the wood cross section is not charred and charring itself does not extend more than 2.—- of an inch into the wood.

Answer 3

1. 90 percent
2. 1/16 of an inch

Question 4

Quick-fix techniques; plastic sheeting protective techniques: Nailing strips should be at least 1.—- Plastic sheeting should be at least 2.—- or reinforced sheeting… Fasteners should be long enough to penetrate the shearing or at least 3.—- to the stud.

Answer 4

1. 1- by 2-inch furring strips or 12-gauge, 1-inch wide metal strips.
2. 6-mil thick
3. 1 1/2 inch

Question 5

Quick-fix techniques; plastic sheeting protective techniques; general information:
For holes in plywood cut the nailing strips 1.—- wider than the hole and cut the plastic sheeting 2.—-
For holes in a non-nail-able substrate! Locate the nailing strips over the closest undismayed studs. Then cut the plastic sheeting 3.—- wider than the nailing strip.
Wrap 4.—- inches of plastic around both the top and bottom nailing strips. when installed, the plastic should be flat against the building with the wrapped nailing strip on the outside.

Answer 5

1. 12 - 24 inches
2. 24 inches wider than the nailing strip
3. 24 inches
4. 12 inches

Question 6

Quick-fix techniques; emergency wall repairs on wood-framed structures; small hole repair:
Cut the sheathing to provide at least 1.—- over the undamaged siding.

Answer 6

6-inch

And the distinction between small hole repair and large hole repair is if it’s less than or more than 3 feet in diameter.

Question 7

Quick-fix techniques, emergency wall repair on wood-framed structures; sheathing repair:
Apply 1.—- nominal sheathing to the studs for most walls. However, for shear-walls, use 2.—- plywood when available.

When the wall must act as a hold down for the roof, nail the sheathing 3.—- on center, except on the top and bottom plates, nail them 4.—- on center.

Answer 7

1. 1/2-inch
2. 3/4-inch
3. 6 inches
4. 4 inches

Question 8

Quick-fix techniques; emergency wall repairs on masonry structures; large hole repair in load-bearing walls:
Square up the hold and brace inside with 1.—- double headers and side braces, and use double 2.—- cross braces.
Cover over each side with 3.—- of plywood
Install sheets horizontally and overlap the good masonry at least 4.—-

Answer 8

1. 2- by 8-inch
2. 2- by 4- inch
3. 1 or 2 layers of 3/4-inch
4. 8 inches

Question 9

Quick-fix techniques; emergency wall repairs on masonry structures; load-bearing wall confining:
This repair should be limited to small holes with 1.—- blocks missing and where there is no extensive cracking around the hole. Use at least 2.—-

Cut the steel to provide about 3.—- of overlap between the steel and the undamaged block.
Drill through the steel about 4.—- from the edges in the corners and midpoint on the sides.

Answer 9

1. 7 or 8
2. 4- or 3-gauge sheet steel (about 1/4-inch thick)
3. 8 inches
4. 4 inches

Question 10

Quick-fix techniques; emergency wall repairs on masonry structures; large hole repair in non-load bearing walls:
Cut one or two 1.—- for a header to fit the top of the squared hole.
If overseas and metric blocks are used, use a wider header or nail 2.—- plywood (cut as wide as the plywood)
Cut two sides braces about 3.—- of an inch longer than the distance from the bottom of the hole to the bottom of the header.

Answer 10

1. 2 by 8s
2. 3/4-inch
3. 1/8 of an inch

Question 11

What are the typical MOS dimensions for various aircraft?
1. Fighter aircraft
2. C-130 Hercules
3. C-17 Globemaster III

Answer 11

1. Fighter aircraft—5,000 feet long by 50 feet wide
2. C-130 Hercules—3,500 feet long by 60 feet wide.
3. C-17 Globemaster III—at least 3,500 feet long (but may be longer depending upon altitude surface type, and runway condition rating of the airfield.

Question 12

Craters:
In terms of size, what’s the difference of spalls, large craters, and small craters in a MOS/MAOS together?

Answer 12

spalls < 5ft in diameter
large craters => 15ft in diameter
small craters =<15ft in diameter

Question 13

Expedient repair:
Under ideal situations, where sufficient equipment is available, individual crater repairs should be completed within 1.—-

Answer 13

1. four hours

Question 14

Crater repair process: Each crater repair team is capable of repairing up to 1. —- for rapid-set concrete caps, or 6 hours 52 minutes for asphalt caps in 2.—-

Answer 14

1. 18 craters in 6 hours 48 minutes
2. 18-inch-thick concrete with no reinforcing steel.

Question 15

ADR equipment sets: differences between small, medium, large, and very large ADR sets.

Answer 15

1. Small ADR set = 91-person team and contain 61 items of v.c. and additional supplemetal items
2. Medium ADR set = 164-person team and contain 135 items of v.c.s.
3. Large ADR set = 237-person team and contain 209 items of v.c.s.
4. Very large ADR set = 310-person team and contain 283 items of v.c.s.

Question 16

The filled-in crater should be flush with adjacent undamaged pavement surfaces, but 1.—- , plus or minus, is allowed (fig-3—1.) To fully understand RQC procedures, you should refer to 2.—-

Answer 16

1. 3/4-inch
2. TO 35E2-4-1 Repair Quality Criteria System for Rapid Runway Repair.