510 EM 385-1-1 Chapters 1-8

4-8. General Requirements.

Temporary Structures

Construct temporary structures as per ASCE 7 standards, considering various loadings like dead, live, wind, and seismic forces.
Secure trailers and similar structures with rods, cables, or steel straps to ground anchors, ensuring resistance to wind as per state or local standards.
Maintain the area by controlling the growth of tall grass and weeds near the structures and ensure proper bonding and grounding near overhead electrical lines.

Fencing and Warning Signs

Install temporary fencing in public areas, extending from grade to a minimum of 4 feet above, with a maximum mesh size of 2 inches, ensuring rigidity and tautness.
Post warning signs on the fencing every 150 feet or at least one on sides less than 150 feet long, indicating construction hazards and restricting unauthorized entry.
Conduct a risk analysis to determine the necessity of fencing for specific project sites, posting warning signs conspicuously if fencing is not required.

Knowledge Check Choose the best answer for the question.

4-3. What is a requirement for constructing temporary structures as per ASCE 7 standards?

Include sanitary facilities

Consider loadings like wind, and seismic forces?

Provide cool drinking water

Ensure secure storage facilities

You forgot to answer the question!

EM 385-1-1 Paragraph 4-8 (a. – b.).

4-8. General Requirements. (a. – b.)

a.  Temporary Structures.

(1)  Design and construct temporary structures according to ASCE 7.  Consider the following loadings:

(a)  Dead and live loads.

(b)  Soil and hydrostatic pressures.

(d)  Rain and snow loads.

(e)  Flood and ice loads.

(f)  Seismic forces.

(2)  Anchor trailers and other temporary structures used as field offices, personnel housing, or for storage with rods and cables or by steel straps to ground anchors. Design the anchor system to withstand winds and according to the applicable state or local standards for anchoring mobile trailer homes.

(3)  Control the growth of tall grass, brush, and weeds adjacent to trailers and other temporary structures used as field offices, personnel housing, or storage.

(4)  Properly bond and ground temporary structures, equipment, and fencing placed under or near overhead electrical power transmission and distribution lines (see chapter 11).

b.  Fencing and Warning Signs.

(1)  Provide temporary project fencing, or a substitute approved by the USACE supervisor or accepted by the KO or COR and delineated in the Construction Site Plan, on all projects located in areas of active use by members of the public.  This includes sites near family housing areas or school facilities.

(2)  Fencing must extend from grade to a minimum of 4 feet (1.2 m) above grade and must have a maximum mesh size of 2 inches (5 cm).  Fencing must remain rigid and taut (that is, less than 4 inches (10 cm) of deflection when a minimum of 200 pounds (0.9 kilonewtons (kN) of force is exerted on it from any direction).

(3)  Post signs on the fencing warning of the presence of construction hazards and for unauthorized persons to keep out of the construction area.  At minimum, post signs every 150 feet (45.7 m).  Post at least one warning sign on the fenced sides of project sites that are less than 150 feet (45.7 m) long.  (See chapter 8)

(4)  Depending upon the nature and location of the project site, the USACE supervisor/KO or COR may determine that fencing is not required.  Perform a risk analysis of public exposure and project-specific considerations to make this determination and include the results in the Construction Site Plan.  In those locations where the USACE supervisor/KO or COR has determined fencing is not needed, conspicuously post warning signs that identify the construction hazards.

510 EM 385-1-1 Chapters 1 - 8

4-8. General Requirements.

Temporary Structures

Fencing and Warning Signs

Knowledge Check Choose the best answer for the question.

4-8. General Requirements. (a. – b.)