LogHouse_Section_C_(v_AC)_Changes_Only_27Nov2017.pdf

HSFE80-17-R-0005 Section C

VERSION AC NOVEMBER 14, 2017

VERSION AB AUGUST 18, 2017

Table of Contents

Contents

TABLE OF CONTENTS

TABLE OF REVISIONS

SECTION C ‐ DESCRIPTION/SPECIFICATIONS/PERFORMANCE WORK STATEMENT

SECTION C.0 VERSION CONTROL/VERSION DEFINITION

C.4.2.1 Installation Permits C.4.2.2 Site Preparation and Enhancement C.4.2.3 Blocking and Piers for Park Models and Manufactured Homes C.4.2.4 Strapping and Anchoring for Park Models and Manufactured Homes

C.4.2.5.1 Blocking and Piers for Travel Trailers C.4.2.5.2 Strapping and Anchoring of Travel Trailers

C.4.2.11 Install and Test HVAC C.4.2.12 Skirting

C.4.3 Standard Stairs, Platform Steps, and Ramps C.4.3.3 Uniform Federal Accessability Standards (UFAS) for Ramp Construction C.14.5.1 Commercial Park Expansion, Group Site Construction and Difficult Single Unit Installation Site Safety and Health Plans

Table of Revisions

Version Date Revision AA 6/30/2017 Initial Solicitation AB 8/18/2017 Responses to Questions and

General Clean-up AC 11/27/2017 Additional Clean-up

SECTION C - DESCRIPTION/SPECIFICATIONS/PERFORMANCE

WORK STATEMENT

Section C.0 Version Control/Version Definition

During the life of this contract, FEMA anticipates that there may be changes in requirements. To ensure that government staff and contractors are aware of the most current version and so that all concerned will be able to identify which version is more recent the following version identification will be implemented.

The version identifier will use a two letter designation. The first letter identifies the major revision the second letter identifies a minor revision. FEMA anticipates that during the life of a contract only the minor revision will change. The version identifier is located in the footer located on each page.

The initialis version of Log HOUSE is identified with the major revision designator of A. The minor version identified is A. If a minor revision is made the minor designation will change to B.

This version of this requirement is designated:

ACA

Any changes made to these requirements will be designated as follows:

AB for the first change AC for the second change Etc.

C.4.2.1 Installation Permits

The contractor shall identify and apply for all permits that are required for MHU installation as defined in Section F.6 Areas #13 and #23, unless a deviation is approved by the COR.The contractor shall identify and obtain all permits that are required for MHU installation, and report the projected time required to obtain permits. The contractor shall be responsible for obtaining necessary permits associated with placing and installing the unit and utility installation. The contractor shall identify the permits required for completing the unit installation. In the event that delays occur in obtaining local government issued permits, the contractor, with COR authorization, as approved by the CO, and in coordination with the AHJ, has the option to employ the services of a third party permitting agency to expedite processing of permits. In the event that the contractor pays for the permits required for MHU installation, the Government will reimburse the contractor at actual expense (receipt and proper documentation required).

C.4.2.2 Site Preparation and Enhancement

Site preparation provides the labor and materials required to make a site feasible for the installation of an MHU. As necessary, the contractor shall clear and remove debris prior to MHU installation. The cleared area shall provide sufficient area for MHU installation and provide occupants adequate access to the home and ensure occupant safety.

A vapor barrier shall be installed to cover the ground under the MHU. The entire area underneath the MHU shall be covered with a 6 mil vapor barrier and any joints shall overlap at least 12 inches and be sealed. If additional crowning material is required the vapor barrier shall be installed after the site is crowned.

Basic site preparation is the efforts of laborers with hand tools to prepare the site. The level of labor is defined as the equivalent work of two (2) people working for one (1) hour each with hand tools such as lawnmowers, chain saws, shovels, rakes, wheel barrels, etc., necessary to prepare the site for the unit.

Crowning and drainage shall be included in basic installation to ensure that the site is crowned and graded to slope away from the manufactured home to ensure proper drainage and prevent moisture from accumulating under the unit. All drainage must be diverted away from the home and must slope a minimum of one-half inch per foot away from the foundation for the first ten feet (10’).

All drainage must be diverted away from the home and must slope a minimum of one-half inch (1/2") per foot away from the foundation for the first five feet (5'). Where property lines, walls, slopes, or other physical conditions prohibit this slope, the site must be provided with drains or swales or otherwise graded to drain water away from the structure. If additional material is required to create a properly graded site (CROWNED), a geotextile type fabric shall be installed prior to material installation to segregate the existing soil from the crowning material. The fabric is intended to ease the removal of material at time of deactivation. Crowning of an installation site shall only be required on private sites and existing commercial pads (Commercial Park Expansion and Group Site design and construction shall have pads that are properly graded as part of their design.). The contractor shall provide a level base free of stumps, stones, and other obstructions for the installation of the Residential Fire Sprinkler System’s Tank and Pump System as part of the basic site preparation. As part of basic installation, the contractor shall locate, expose, and connect water, sewer, and electrical connections whereby they can be hooked up to the unit post-installation and made serviceable. The contractor shall be responsible for all trenching, backfill and compaction necessary for this contract. All trenches shall be back filled, tamped or rolled to the maximum practical density to avoid settlement damage to sewer or water lines. All construction debris, waste and excess material shall be cleared and removed from all sites following preparation.

Providing a level base for the installation of the Residential Fire Sprinkler System’s Tank and Pump System is part of the site preparation and enhancement in accordance with MHU Fire Sprinkler System Installation, Test, Maintenance, Repair and Deactivation Guide (Section J, Attachment J.38). FEMA will provide the current guide; however, it is the contractor’s responsibility to ensure that they are using the most current version, which is included in each TPS.

A TPS pad constructed using either a grass-reinforced mesh base or a gravel pad base, which does not require excavation and the construction of a wood frame/retaining wall to accommodate installation of a TPS on a high-slope, is included as part of basic installation.

C.4.2.3 Blocking and Piers for Park Models and Manufactured Homes

The contractor shall construct piers consisting of double courses of concrete blocks and shall meet or exceed the requirements of the local entity issuing the permits as well as the manufacturer specifications based on soil bearing capacity, unless double blocking is prohibited by the local entity. The number and location of piers shall be in accordance with the manufacturer’s instructions unless local codes provide for differing specifications that must be met. If there is a choice between two requirements for blocking, the contractor shall choose the more stringent requirement.

Blocking shall be installed at locations specified by the manufacturer.

Minimum requirements for park models and manufactured homes include:

1. Piers shall consist of courses of double concrete block.

a. Piers will have at a minimum two (2) solid cap blocks on the base and two (2) solid cap blocks at the top of the piers (top course to be laid perpendicular to the I-beam).

Piers will have at a minimum two (2) solid cap blocks on the base and two (2) solid cap blocks at the top of the piers (top course to be laid parallel to the I-beam).

a. Space between the top of the pier’s solid cap block and the bottom of the I-beam frame of the MHU shall not exceed three inches (3”).

b. Up to three inches (3”) of this space may be filled with blocking timber and wedges laid perpendicular to the I-beam, and no more than one inch (1”) of this area shall be shimmed with wedges.

2. Piers consisting of single courses of concrete block will be installed on either side of each exterior door opening and any exterior openings. This includes windows, which are forty eight inches (48”) or wider.

3. The contractor shall provide a base for each pier. The approximate size of the base is twenty-four inches by twenty-four inches (24”x24”) with double blocking. The base will be a State and local approved Acrylonitrile butadiene styrene (ABS) type pier pad, unless otherwise specified by State or local code.

4. Blocking height will be no more than forty-four inches (44”) for manufactured homes and park models, unless this conflicts with State or local regulations in which case the State or local regulations are applicable. If piers for blocking are required to be above forty four inches (44”), the Contractor shall provide a justification for blocking at the proposed height and shall have a licensed professional engineer approval for manufactured homes and park models.

5. The contractor shall remove all grass roots, loose dirt, rocks and debris at the base of the piers.

Note: The contractor has the option to propose alternative method for blocking to the COR.

However, any alternative method for blocking the units shall meet or exceed the requirements in the Performance Work Statement, State or local codes, and shall be approved by applicable entities.

After the weight of the unit is transferred to the concrete block piers, the piers shall be vertically aligned and tightly shimmed with wooden wedges. If the piers are not vertical at the time of final inspection, they shall be removed and reinstalled by the contractor at no additional expense. The contractor is responsible for all necessary re-leveling and re-blocking of the unit for a time period specified in: MHUM SCOPE (See Section J, Attachment J.1).

C.4.2.4 Strapping and Anchoring for Park Models and Manufactured Homes

Strapping and anchoring shall be governed by the stricter of the stipulations found in either the manufacturer requirements, or the official instruction of the state or local authority having jurisdiction (AHJ).Strapping and anchoring shall be governed by the stricter of the stipulations found in either the manufacturer requirements, or the official instruction of the State or local permitting entity. Strapping and anchoring shall be installed at locations specified by the manufacturer for the wind zone as established by Housing and Urban Development (HUD) for Manufactured Homes or as directed by the manufacturer for Park Models. Requirements for PMs and MHs include:

1. Straps shall be 1 ¼” with a thickness of 35/1000” cold rolled galvanized steel, as per Federal Specification QQ-S-781 G for Type 1 Class B, Grade 1 strapping.

2. Anchor straps shall be snug and in a near vertical position. The number and spacing of straps is typically dependent on the frame size for the MHU, the length and height of the piers and the wind zone.

Tie-downs and strapping shall be inspected and adjusted no earlier than seven days and no later than 14 days after installation.

Alternatives to the above requirement may be used if the contractor can provide the COR with a current independent study by an appropriately licensed expert to support the conclusion that the alternative measure is equal to or exceeds requirements. The contractor is responsible for ensuring it meets the applicable FEMA or local requirements.

Note: The contractor shall only remove the wheel/axle, if the manufacturer installation instruction or regulation requires the removal of the wheel/axle.

C.4.2.5.1 Blocking and Piers for Travel Trailers

The contractor shall construct piers consisting of double courses of concrete blocks. The purpose of blocking a travel trailer is to ensure that the travel trailer is stable during the period that the travel trailer is occupied by a disaster survivor. Requirements for TTs include:

Piers shall consist of courses of double concrete block.

Piers will have at a minimum two (2) solid cap blocks on the base and two (2) solid cap blocks at the top of the piers (top course to be laid perpendicular to the I-beam).Piers will have at a minimum two (2) solid cap blocks on the base and two (2) solid cap blocks at the top of the piers (top course to be laid parallel to the I-beam).

Space between the top of the pier’s solid cap block and the bottom of the I-beam frame of the MHU shall not exceed three inches (3”). Up to three inches (3”) of this space may be filled with blocking timber and wedges laid perpendicular to the I-beam, and no more than one inch (1”) of this area shall be shimmed with wedges.

A minimum of two (2) piers per side will be installed for travel trailers.

The contractor shall provide a base for each pier. The approximate size of the base is twenty four inches by twenty four inches (24”x24”) with double blocking. The base may be a wooden three quarters inch (¾”) treated plywood or State and local approved ABS type pier pad, unless otherwise specified by State or local code.

The contractor shall clean away all grass roots, loose dirt, rocks and debris at the base of the piers.

Blocking shall be at a height that allows the wheels to remain in contact with the ground.

Manufacturer provided stabilizer jacks shall not be used in conjunction with or in lieu of blocking.

After the weight of the unit is transferred to the concrete block piers, the piers shall be vertically aligned and tightly shimmed with wooden wedges. If the piers are not vertical at the time of final inspection, they shall be removed and reinstalled by the contractor at no additional expense. The contractor is responsible for all necessary re-leveling and re-blocking of the unit for a time period specified in: MHUM SCOPE (See Section J, Attachment J.1)

C.4.2.5.2 Strapping and Anchoring of Travel Trailers

The contractor shall install two (2) anchors per side for a total of four (4) anchors. All anchors shall be placed, driven, or augured so that the individual anchor will withstand a withdrawal pull with no more than two (2) inch vertical displacements. The location of the straps shall be two (2) on the tongue of the unit, and two (2) on the back bumper of the unit. Each strap shall extend from one (1) turnbuckle on the anchor head; wrap one (1) time around the tongue or the back bumper, respectively, before being attached to the other turnbuckle on the anchor head.

Alternatives to the above requirement may be used if the contractor can provide the COR with a current independent study by an appropriately licensed expert to support the conclusion that the alternative measure is equal to or exceeds requirements. The contractor is responsible for ensuring it meets the applicable FEMA or local requirements.

C.4.2.11 Install and Test HVAC

The contractor shall install the HVAC system provided with the MHU using properly qualified personnel and/or personnel who are licensed under State or local codes, as applicable. FEMA MHU’s either come with the entire HVAC system attached to the MHU or with an air conditioning condenser unit that requires installation separate from the MHU. Installation of all HVAC components, including any external compressor units, shall be in compliance with the manufacturer’s instructions. For replacement of original thermostat provided by manufacturer (either at time of installation, or maintenance repair) the contractor shall provide documentation from HVAC manufacturer showing compatibility and approval of the replacement (non-configurable) thermostat, as well as testing procedure for proper configuration. Additional requirements for all types of MHUs (MH, PM and TT) include:

1. The contractor shall obtain appropriate permits and meet all local codes and ordinances pertaining to the installation of the Heating, Ventilation, and Air Conditioning (HVAC) unit.

2. All components shall be installed in accordance with State and local codes, as well as the

NEC.

3. The contractor shall supply all the materials for this installation, with the exception of the A/C condenser unit which is provided as GFE with the unit.

4. External A/C unit electrical installation includes burial cable and thirty (30) amps breaker (disconnect switch) as part of the installation.

a. A/C unit shall be located within ten feet (10’) of the A/C electrical breaker unless the unit is permanently mounted.

b. The contractor shall provide underground service, in compliance with all codes and regulations, from the electrical service to the A/C unit.

5. All cables shall be installed and encased in approved conduit.

6. Sweeps shall be used at the points where buried cable makes a ninety degree (90°) turn toward the meter loop assembly and A/C. All conduit connections shall be watertight.

7. Prior to reporting the unit as RFO and requesting a Government acceptance inspection the contractor shall operate the HVAC unit in both the heating and cooling modes for at least thirty (30) continuous minutes in each mode to ensure that they are fully operable to ensure proper function and reliability. HVAC unit installation shall be considered part of the basic unit installation.

C.4.2.12 Skirting

The contractor shall furnish and install skirting for all MHUs. Skirting shall be provided and installed in accordance with Federal, State, Tribal and Local codes/ordinances. The contractor shall furnish and install skirting on the entire perimeter of a manufactured home in accordance with manufacturer’s recommendations and normal standards of industry. Upon request by FEMA, the contractor shall furnish and install vinyl insulated skirting on the entire perimeter of manufactured home to meet proper winterization-protection requirements. The material shall have at least an acceptable R-value based on the location within the Thermo Zone Map located in HUD Code CFR 3280.506. Zone 3 shall have a minimum of R-10 (typical of 2" foam), Zone 2 shall have a minimum of R -5 (typical of 1" foam), and Zone 1 shall have a minimum of R-3.

The space shall be properly ventilated at a rate of one (1) square foot net free area per one thousand five hundred (1,500) square feet of under-floor area (when a 6 mil vapor barrier is properly installed) and have a top rail to conceal fasteners. The ventilation rate shall be one (1) square foot net free area per one hundred and fifty (150) square feet of the under-floor area when a vapor barrier is NOT used. The space shall be properly ventilated at a rate of one (1) square inch net free area per one hundred and fifty (150) square feet of the under-floor area and have a top rail to conceal top fasteners. When vents are installed in non-perforated solid skirting (i.e., insulated skirting) ventilation openings must be placed as high as practicable above the ground and must be located on at least two opposite sides to provide cross-ventilation. Ventilation openings must be covered for their full height and width with a perforated corrosion and weather-resistant covering that is designed to prevent the entry of rodents. In areas subject to freezing, the coverings for the ventilation openings must also be of the adjustable type, permitting them to be in the open or closed position, depending on the climatic conditions. The installation of operable louvers shall not be permitted. An access panel or equivalent shall be provided in proximity to the manufactured home water inlet location. The skirting shall be securely fastened to the manufactured home and ground using accepted fastening methods.

(Nails will not be accepted). The contractor shall ensure that the connections to the Residential Fire Sprinkler System’s Tank and Pump System pass through the skirting so that the connections are not cut or damaged by the skirting.

Installation of skirting for travel trailers is optional and must have prior approval by the COR.

Payment for skirting in a TT use CLIN #0004CT.

C.4.3 Standard Stairs, Platform Steps, and Ramps

Stairs, platform steps and ramps are to provide access/egress to the MHU. All stairs, platform steps and ramps shall have appropriate railings. In addition the stairs, platform steps and ramps shall have a platform at the access/egress door to the housing unit that is five feet by five feet (5’x5’).

Standard Stairs, Platform Steps and Ramps shall be installed in such a way that the installation and use does not damage or impinge of the Residential Fire Sprinkler System’s Tank and Pump System connections for the MHU.

Strapping and anchoring shall be governed by the stricter of the stipulations found in either the manufacturer requirements, or the official instruction of the state or local authority having jurisdiction (AHJ).Strapping and anchoring for all steps, stairs and ramps shall be governed by the stricter of the stipulations found in either the manufacturer’s requirement, or the official instruction of the State or local permitting entity. All anchors shall be placed, driven, or augured so that the individual anchor will withstand a withdrawal pull with no more than two inches (2”) of vertical displacements. The strap shall be 1¼” x 35/1000” thick cold rolled galvanized steel, as per Federal Specification QQ-S-781 G for Type 1 Class B, Grade 1 strapping. The anchor straps shall be snug and in a near vertical position.

Payment for strapping and anchoring of all steps, stairs, and ramps are included as part of stairs, platform steps and UFAS ramp construction.

C.4.3.3 Uniform Federal Accessability Standards (UFAS) for Ramp Construction

UFAS ramps are designed to provide ease of access to an MHU for an occupant who needs a wheeled mobility device (e.g., wheel chair or scooter). Diagrams which will assist the contractor in understanding UFAS ramp requirements and the measurement of said ramp are located in Section J, Attachments J.26, J.56, and J.57.

1. The contractor shall ensure that ramps are built and installed in accordance with the current UFAS requirement, at the time of work order execution, unless UFAS conflicts with State or local regulations in which case the more stringent regulations are applicable.

2. The contractor shall install a wooden ramp with a platform, at the unit entry. The platform provides an area that allows the occupant to easily access or egress the MHU. Thresholds at accessible doorways shall not exceed 1/2 in (13 mm) for entry doors. Raised thresholds and floor level changes at accessible doorways shall be beveled with a slope no greater than 1:2 (e.g., One inch (1”) transition should have at least a two inch (2”) slope).The contractor shall install a wooden ramp with a platform, level with the entry. The platform provides an area that is flush with the entry and allows the occupant to easily access or egress the MHU. All wood material shall be exterior grade lumber or treated construction grade lumber. Platforms shall be sixty inch by sixty inch (60”x60”) square.

3. The overall length of the ramp shall be dependent on the height above the grade of the unit door sill and the distance to a suitable, firm surface for the approach to the ramp. To ensure consistent measurement of ramps for invoicing and authorization purposes the contractor shall measure the ramp starting where the ramp slopes away from the upper platform which provides access to the MHU.

4. The upper platform shall not be included in the measurment of the ramp. If the ramp has one or more switchback platforms then the contractor shall measure the switchback along its longest length of the platform.

5. The UFAS required transition (access pad) at the bottom of the ramp is not included in the ramp measurement. Suitable surface materials are asphalt, concrete, or engineered boardwalks. Additional details and guidance on measuring a ramp are provided in Section J: Attachment J.26, UFAS Ramp Construction.

6. The ramp pitch shall be one to twelve (1:12) maximum, which represents one inch (1”) of height maximum for each twelve inches (12”) in length and shall have landings at the top, bottom, and every thirty feet (30’) in length. Platforms shall be sixty inch by sixty inch (60”x60”) square. Intermediate platforms shall be appropriately sized for their intended purpose (e.g. for a 90 degree turn an area of 60” x 60” is required, switchbacks would be sized differently, as would platforms intended as a rest point for ramps greater than 30’).

7. Ramp surfaces shall be firm, stable, and slip resistant. The ramp shall be firmly supported on grade, with mud seals added where necessitated by soil conditions. The ramp and the platform shall have a non-skid surface using materials that are approved by industry.

Note: Sand added to paint for traction is unacceptable.

8. The contractor may supply modular aluminum ramps that are compliant with UFAS in lieu of wood ramps. These ramps shall be acceptable by State and local authorities, shall comply with the foregoing requirements, and shall be approved by the COR.

9. Standard Ramp Length

a. The length of a ramp for a manufactured home or park model is forty-five linear feet (45’) of ramp, which includes forty feet (40’) of ramp at a one to twelve (1:12) maximum ramp pitch and includes a five foot (5’) interim rest platform, as ramps greater than thirty feet (30’) need to have an interim way point to be in compliance with UFAS.

b. The length of a basic ramp for a travel trailer is thirty feet (30’).

10. Additional Ramp Length: For ramps that exceed the standard length for a manufactured home, park model, or travel trailer, prior COR approval is required.

Payment for additional ramp length use CLIN # 0004BC.

C.14.5.1 Commercial Park Expansion, Group Site Construction and Difficult Single Unit Installation Site Safety and Health Plans

The contractor shall be required to prepare event specific Site Safety & Health Plans (SSHP) in accordance with Section F, Areas #58 and #59. The SSHP which will be reviewed and approved by the Government prior to commencement of any commercial park expansion, group site construction and difficult single unit installation work and shall be in compliance with the applicable portions of U.S. Army Corps of Engineers Manual EM 385-1-1.The SSHP which will be reviewed and approved by the Government prior to commencement of any commercial park expansion or group site construction work shall be in compliance with the applicable portions of U.S. Army Corps of Engineers Manual EM 385-1-1. The contractor shall obtain utility mark-outs prior to any intrusive work and shall ensure proper shielding or deactivation of utilities will be required as necessary. All field and reporting activities will be performed or supervised by properly trained and appropriate professionals, including Professional Engineers, Professional Geologists, Environmental Scientists, and any other designated professionals required under Federal, State or local regulations. If the contractor chooses not to follow EM 385-1-1 then the contractor shall provide justification for deviation(s) to the COR for approval. Manual available at:

http://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_38 5-1-1_2008Sep_Consolidated_2011Aug.pdf

Payment for work completed under this section for Commercial Park Expansion is CLIN # 0010CE.

Payment for work completed under this section for Group Site Construction is

CLIN # 0010CG.

Payment for work completed under this section for Difficult Single Unit Installation is CLIN # 0010CI.

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