Amendment__1.pdf

(x)

12026119R0003 x x

1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted ; or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED AT

THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted , such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

x

BOISE ID 83709-1663

1249 S VINNELL WAY STE 200

ATTN-TANYA SPANFELLNER

SW IDAHO-NEVADA ACQUISITION CENTER

03/08/20190001

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

12. ACCOUNTING AND APPROPRIATION DATA (If required) is not extended.is extended, Items 8 and 15, and returning

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended , by one of the following methods: (a) By completing

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

FACILITY CODE CODE

10B. DATED (SEE ITEM 13)

10A. MODIFICATION OF CONTRACT/ORDER NO.

9B. DATED (SEE ITEM 11)

9A. AMENDMENT OF SOLICITATION NO.

CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

7. ADMINISTERED BY (If other than Item 6)CODE 6. ISSUED BY

PAGE OF PAGES

4. REQUISITION/PURCHASE REQ. NO.3. EFFECTIVE DATE2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO. (If applicable)

1. CONTRACT ID CODE

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

03/08/2019

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

E. IMPORTANT: Contractor is not, is required to sign this document and return __________________ copies to the issuing office.

ORDER NO. IN ITEM 10A.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

Purpose of Amendment is:

1. Reference Page 4 Section B Schedule of Items-Item Number 332228 Culvert-24-inch, replace the 24 inch with 18 inch culvert

2. Reference Page 34 1. Past Performance and Company Experience

Describe all contracts and subcontracts currently in process and completed by your firm in the past 3 years. Change the 3 years with 7 years.

3. Reference Attachment 1-Page 118-130 Section 133401-Precast Concrete Vault Restroom

Building and replace with the attached Section 133401 (changes are highlighted)

4. Reference Page 119 1.3 B. Contractor shall order under GSA contract. Replace shall with may.

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

(Signature of person authorized to sign) (Signature of Contracting Officer)

TANYA SPANFELLNER

STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA

FAR (48 CFR) 53.243

NSN 7540-01-152-8070

Previous edition unusable

Except as provided herein, all terms and conditions of the document referenced in Item 9 A or 10A, as heretofore changed, remains unchanged and in full force and effect .

PRECAST CONCRETE VAULT RESTROOM BUILDING 133401-1

USDA FOREST SERVICE, R-4

HILLTOP CAMPGROUND RECONSTRUCTION PROJECT

SECTION 133401 - PRECAST CONCRETE VAULT RESTROOM BUILDING

PART 1 - GENERAL

1.1 SUMMARY

A. This section applies to the fabrication and installation of a precast concrete Vault Restroom building, including shipment to site, all work necessary to completely fabricate, and installation of other manufactured accessories needed or specified in this section for a complete Vault Restroom.

B. Related sections include the following:

1. Section 024100 “Waste Material Disposal.”

2. Section 311000 “Clearing and Grubbing.”

3. Section 312000 “Earthwork.”

4. Section 321204 “Crushed Aggregate Base or Surface Course.”

1.2 SUBMITTALS

A. Manufacturer’s Literature: Submit literature for the following items to the Contracting Officer (CO) for approval within 10 day after award of contract. Drawings and literature must be marked to show the exact model, size, and color proposed.

1. Door, louvered vents, and door hardware.

2. Paint, interior and exterior.

3. Caulk, ground and adhesive.

4. Concrete color additive, stains, concrete curing compound and concrete sealer.

B. Shop Drawings: Submit one set of shop drawings of the Vault Restroom stamped by a Professional Engineer.

C. Design Calculations: Submit one set of design calculations showing that the building is designed for the structural loads required, fabrication and transportation loads, and crack prevention and control.

D. Concrete Delivery Certificates: Supplier shall furnish a certificate with each truckload of concrete delivered showing the items in the following list. Submit these certificates to the CO upon delivery of the Vault Restroom.

1. Weight of cement in each load.

2. Weight of fine aggregate in each load.

3. Weight of coarse aggregate in each load.

4. Weight of water in each load.

5. Time of day cement was added to the aggregate and water.

Amendment #1-12026119R0003

PRECAST CONCRETE VAULT RESTROOM BUILDING 133401-2

1.3 MEASUREMENT AND PAYMENT

A. Payment will be lump sum for each Pre-cast Concrete Vault Restroom installed including all work within 10 feet of the as shown on the drawings. Payment shall include all work associated with clearing, excavation, fill, aggregate, backfill and grading necessary to complete the item.

B. Contractor shall order under GSA contract.

PART 2 - PRODUCTS

2.1 PRECAST VAULT RESTROOM

A. Design criteria

1. Snow Load: 200 lbs/ft2

2. Wind Load: 90 mph, exposure C from 2012 International Building Code

3. Seismic Load: Category E from 2012 International Building Code

4. Designed to meet the requirements of the Americans with Disabilities Act

Requirements and Uniform Federal Accessibility Standard including as of the date of these specifications.

5. Design incorporates all design aspects of Sweet Smelling Technology as outlined by Brian Cook for the U.S. Forest Service. ("In Depth Design and Maintenance Manual for Vault Toilets" - July 1991 - Publication No. 9123 1601)

6. Double Vault Toilet with Chase.

B. Manufacturers of precast concrete Vault Restrooms include, but are not limited to, the following:

1. CXT Incorporated- Building Division, Spokane, WA, (509) 921-8766, www.cxtinc.com

2. BC Concrete Missoula, Missoula, MT, (406) 549-9682, www.missoulaconcrete.com

2.2 BUILDING WALLS AND SLAB

A. Floor Slab: 5-inch minimum thickness.

B. Walls: 4-inch average thickness, 3-inch minimum wall thickness at the top of the walls.

C. Roof: 4 ¼ inch minimum concrete thickness

2.3 OPTIONAL POST TENSIONING

A. The contractor may elect to circumferentially post tension reinforcing steel for the floor and roof slabs to protect against leaking and cracking. Should the Contractor elect to post tension reinforcement steel in the roof slab, fluid applied elastomeric roofing may be deleted.

2.4 WALL VENTS

PRECAST CONCRETE VAULT RESTROOM BUILDING 133401-3

A. Wall vents: Airolite No. 609B, size shown on the drawings, The Airolite Co., Marietta, OH, www.airolite.com; or HEAVY DUTY KICK PROOF VENT by Romtec, Roseburg, OR.; or an approved equal. Only one vent per toilet room should be installed – the contracting officer will specify the location of the vent (to be in a wall or the door – the side of the building with the prevailing wind)

2.5 ROOF

A. Sloped slab shed type or gabled type with a turned down edge to prevent water from migrating down the bottom edge of the roof panel and back into the building.

B. Minimum 6:12 pitch desired

2.6 VENT STACK

A. Vent Stack: shall be a minimum 12 inch diameter HDPE (with a DR of 32.5) and extend from the vault to a minimum of 3 feet higher than the roof peak. Vent Stack shall be black and have a cap.

2.7 PRECAST CONCRETE FORM WORK

A. Construct forms of plywood, lumber, or steel sheets or plates free of defects. Forms must be removable without injuring the concrete and must be constructed to maintain tolerances between mating surfaces of building components.

B. Form liners

1. Walls: Top Section of wall is horizontal lap and bottom section of building is napa valley stone color mountain blend.

2. Roof: Ribbed roof

C. Form coating: Non-staining type that will not leave residual matter on concrete surface or adversely affect proper bonding of subsequent coatings, caulking, grout or adhesive applied to concrete surfaces.

1. Form release agent or coating: As recommended by form liner manufacturer.

2. Coating containing mineral oils or other nondrying ingredients will not be permitted.

D. Vault:

1. Provide one concrete vault area per toilet riser.

2. Each concrete vault shall hold a minimum of 1,000 gallons of waste.

3. Concrete vault floor shall be sloped a minimum of 1 inch per foot towards the vault cleanout.

4. Vault Liner: Vault shall include a one-piece molded polyethylene (LDPE) liner with a minimum thickness of 0.10 inch and lip over top of vault. Liner shall be secured to sides of vault interior so that there are no voids between liner and sides of vault.

PRECAST CONCRETE VAULT RESTROOM BUILDING 133401-4

2.8 CONCRETE REINFORCEMENT

A. Reinforcing steel: ASTM A615, Grade 60.

B. Pre-stress strand (if used): ASTM A416, Grade 270.

C. All reinforcement shall be new, free from dirt, oil, paint, grease, loose mill scale, and loose or thick rust when placed.

2.9 CONCRETE MIX

A. Concrete supplier: Ready-mix or another approved precast concrete product firm.

B. Proportion cement, aggregate, and water to obtain concrete with good workability.

C. Concrete design

1. Aggregate: Coarse No. 67 (Table 2, ASTM C33)

2. Minimum cement content: 6.5 sacks per yd3

3. Cement type: ASTM C150 Type II, IIA, or III for building

4. Maximum water-cement ratio: 0.45

5. Slump: 3 to 5 inches by ASTM C143

6. Air content: 4-7% by ASTM C231

7. Minimum strength concrete: 4,500 psi at 28 days

8. Water: Potable

9. Admixtures:

a. Air-entraining agent: ASTM C260

b. Water reducing agent: ASTM C494, Type A

c. Use of other admixtures is subject to approval by the Contracting Officer

2.10 COLORED CONCRETE

A. Color additives: ASTM C979. Provide a 12”x 12”x 1” color sample to the Contracting Officer for approval. The following components shall contain colored concrete:

1. Building roof panels – Java Brown

2. Building wall panels – Western Whea

2.11 CONCRETE CURING COMPOUND AND ROOFING

A. Curing compound: Colorless, ASTM C309, Type 1 or 1-D.

B. Fluid Applied Elastomeric Roofing: Acrylic latex resin-base elastomeric roofing material applied in fluid form suitable for use over concrete roof slabs. If manufacturer elects to post-tension roof panel, the roofing material may be deleted.

1. Color: Brown.

2. Material: “Rapid Roof” as manufactured by the Conclin Company or an approved equal.

PRECAST CONCRETE VAULT RESTROOM BUILDING 133401-5

2.12 CAULKING, GROUT, ADHESIVE, AND MORTAR

A. Caulking shall remain flexible and non-sag at temperatures from -50° to 140° Fahrenheit.

1. Exterior, roof peak joint: 100% silicone caulk, clear; GE Silicone II or an approved equal.

2. Exterior joints (including roof/wall and wall panel joints): Tripolymer sealant caulk which compliments exterior color and has a minimum 5 year guarantee.

3. Interior joints: Paintable silicone based caulking with a minimum 5 year guarantee.

B. Grout: Non-shrink type matching color of surrounding concrete as closely as possible.

C. Epoxy concrete adhesive: Two component, rigid, non-sag gel adhesive for bonding to dry or damp surfaces, moisture insensitive. Color to match surrounding concrete as closely as possible.

D. Portland cement mortar: One part Portland cement, three parts sand, and enough water to make a workable mixture.

2.13 FINISHES AND PAINTS

A. Paint and accessory materials: Similar to the “top-of-the-line” products of the manufacturer’s listed below.

1. Benjamin-Moore and Company, www.benjaminmoore.com

2. Columbia Paint Company, www.columbiapaint.com

B. Maximum lead content: 0.06 % by weight of lead.

C. Type of Paint

1. Metal, interior and exterior

a. Waterborne acrylic bonding primer, Columbia 04-022, or an approved equal.

b. Alkyd-oil Based Enamel, semi-gloss, Columbia 03-241, or an approved equal.

2. Exterior Concrete

a. Stain- pure acrylic water repellent penetrating stain

b. Sealer- clear acrylic anti-graffiti sealer

3. Interior Concrete

a. Floors- 1 part water based epoxy with a silica sand suspension to provide a uniform texture.

b. Interior walls and ceiling- modified acrylic, penetrating pigment followed by a clear acrylic anti-graffiti sealer.

D. Paint colors

1. Metal window and door frames, louvered vents, and doors (interior and exterior):

Java Brown

PRECAST CONCRETE VAULT RESTROOM BUILDING 133401-6

2. Exterior concrete walls and floor: Sand Beige

3. Exterior concrete roof: Java Brown

4. Interior concrete walls: White

5. Interior concrete floor: Gray

2.14 STEEL DOORS

A. Doors: Flush panel type, 1 ¾ inch thick, minimum gauge zinc-coated steel panels, with minimum 18 gauge internal bracing channels, equal to Steelcraft L-16 of size shown on the drawings.

B. Door frames shall be knockdown or welded type, single rabbet, minimum 16 gauge zinc-coated steel, width to suit wall thickness, equal to Steelcraft.

1. Three (3) rubber door silencers shall be provided on latch side of frame

C. Door frame anchors

1. Provide three (3) anchors per jamb located approximately at the same level as hinge locations.

2. Use anchor type suitable for fastening to precast concrete and designed for future removal of frame.

3. Anchors may be omitted if frame is cast in panel.

D. Door hinges

1. One (1) pair shall be 4 ½ inch spring hinges

2. One-half (½) pair shall be standard butt hinge

3. Top and bottom hinge shall have an adjustable tension spring and be adjusted to a

5 lb. maximum pull.

4. Finish shall be US26D (dull chrome)

E. Deadbolt shall be Mortised type, operated by key from outside only, which will receive the Forest Service cylinder; similar and equal to Yale 1152. Finish shall be US26D (dull chrome).

F. Door Louver shall be fixed, inverted split Y, non-vision, 18 gauge galvanized steel with factory prime coat, equal to FDLS series by Anemostat Door Products, www.anemostatwest.com. There shall be no insect screen between louvers.

G. Door sweep shall be an adjustable brush type placed at bottom of door.

H. Door stop shall be a cast metal base, US26D (dull chrome) finish with gray rubber 2 3/8 inch diameter bumper with a 1 inch projection

I. Threshold shall be extruded aluminum with neoprene seal, Pemco #170, or an approved equal.

2.15 INTERIOR HARDWARE

PRECAST CONCRETE VAULT RESTROOM BUILDING 133401-7

A. Grab Bars: Grab bars shall be 18-guage type 304 stainless steel, 1 ½ inch diameter with 1 ½ inch clearance; minimum of length required for accessibility standards. Able to withstand 300-pound top load.

B. Toilet Paper Dispenser: Constructed of ¼” thick, type 304 stainless steel. Holds three

(3) standard rolls of toilet paper. Fastening system able to withstand 300-pound top loading.

C. Double Coat Hook: Formed construction, type 304 stainless steel (Satin Finish), 16-guage minimum.

D. Toilet riser: Toilet riser shall be molded, smooth one-piece constructed of HDPE polyethylene, cross linked polyethylene, or stainless steel. With heavy duty seat and lid (Color: White); Meeting ADA standards. Apply Butyl rubber adhesive sealant to the top surface of the concrete vault before placing the structure on the vault.

2.16 SIGNS

A. Signs: Signs to have raised pictograms, letters, and braille to meet ADA. Signs shall designate standard unisex symbol for single units. All signs to be securely anchored into concrete with tamper resistant anchors.

2.17 WINDOWS

A. Window frames shall be constructed from steel tubing and fasten water-tight to building with vandal resistant fasteners.

B. Window glazing shall be translucent pebble finished mar-resistant Lexan polycarbonate.

Minimum thickness of ¼ inch.

2.18 VAULT CLEANOUT

A. Frame: shall be constructed from steel frame poured integral with the concrete slab.

B. Cover/Lid: shall be constructed of minimum ¼ inch steel. Shall be hinged to the steel frame. Configured with a locking mechanism that will receive a government furnished padlock.

C. Gasket: Cover/Lid shall be gasketed around the entire perimeter of the lid to provide an airtight seal.

2.19 CRUSHED AGGREGATE LEVELING COARSE

A. According to Section 3212004 “Crushed Aggregate Base or Surface Course” Grading E.

PART 3 - EXECUTION

3.1 BUILDING CONSTRUCTION

A. Concrete

PRECAST CONCRETE VAULT RESTROOM BUILDING 133401-8

1. Support and brace forms sufficiently to prevent distortion of forms due to pressure of the concrete during vibrating of concrete and the curing period.

2. Vertical grooves in the form liner pattern shall be continuous except for openings for doors.

a. Horizontal butt joints between liner panels will not be allowed.

b. Vertical butt joints between form liner panels shall be made at vertical groove in liner pattern except at outside corners.

c. Vertical grooves in form liner pattern shall be arranged so that there is equal space between vertical doorframe edges and the adjacent vertical grooves at each opening.

3. Form ties will not be allowed.

4. Thoroughly clean forms and form liners before each use.

5. Apply form coating and form release agent on all forms and form liners in accordance with the manufacturer’s recommendations

6. The Contractor shall assume all responsibility for determining when to remove the concrete components from the forms without causing structural damage to the components. Vault Restrooms constructed with damaged components will be rejected.

B. Concrete Reinforcement

1. Details of reinforcement: ACI 318.

2. Center steel reinforcement in the cross-sectional area of the walls. Provide at least

1 inch of concrete cover on the under surface of roof and floor. Provide diagonal reinforcement at openings.

3. Accurately place and adequately support reinforcing steel or strand in final position prior to starting placement of concrete. The maximum allowable variation for center-to-center spacing of reinforcing steel is ½ inch.

4. Use full length reinforcing steel whenever possible and keep the number of splices to a minimum. When splices are necessary on long runs, alter splices from opposite sides of the component for adjacent steel bars.

a. No. 4 or smaller shall be lapped a minimum of 12 inches;

b. Larger than No. 4 shall be lapped a minimum of 24 bar diameters.

5. Bend bars cold. Do not bend bars partially embedded in concrete

C. Cold Weather Concrete

1. Cold weather concrete: ACI 306 and as follows:

a. Do not place concrete if ambient temperature is expected to be below 35°F during the curing period unless heating equipment is readily available to maintain temperature of at least 45°F.

b. Use no materials containing frost or lumps of frozen.

D. Hot Weather Concrete

PRECAST CONCRETE VAULT RESTROOM BUILDING 133401-9

1. The temperature of the concrete shall not exceed 80°F at the time of placement, and when the ambient temperature reaches 90°F, the concrete shall be protected with moist covering or other methods approved by the Contracting Officer.

E. Mixing And Delivery Of Ready Mix Concrete: ASTM C94, Section 11.5 through 11.9.

F. Placing And Consolidating Concrete

1. Notify the Contracting Officer at least 24 hours before any concrete placement to permit inspection

2. Place layers not more than 24 inches deep. Do not move concrete with vibrators or tampers

3. Consolidate the concrete with suitable mechanical vibrators operating within the concrete or attached steel forms. Vibrate at any point sufficiently to accomplish compaction, but do not prolong to a point where segregation occurs.

G. Finishing Concrete

1. Interior Floor and Exterior Slab

a. Strike flush to within 1/8-inch variation in 6 feet.

b. Float and trowel slabs smooth until no marks remain.

c. Apply final light broom finish to exterior slabs only.

2. Interior Wall Surfaces and Ceiling

a. Finish shall be that provided by smooth steel form or smooth trowel finish with no trowel marks.

3. Exterior Wall Surfaces: Barnwood texture provided by approved form liner.

4. Exterior Roof Surface: Shake texture provided by approved form liner.

5. Cracks and Patching

a. Cracks in concrete components caused by Contractor fabrication, shrinkage during curing, handling, shipping, and installation shall be cause for rejection if the Government determines that the crack will affect the serviceability or structural integrity of the component.

b. Fill small holes, depressions, and air or rock pockets in all surfaces with non-shrinking Portland cement based patching material while concrete is still green and within one day of form removal. Patch shall match the color, finish, and texture of surrounding surface.

c. Patching will not be allowed on any component with holes, chips, or exposed reinforcement totaling more than 18 in3 or with any defects more than 2 inches deep. Those components will be rejected and must be replaced at Contractor’s expense.

H. Curing And Hardening Concrete

1. Keep all concrete surfaces moist for at least six days after being placed. Acceptable methods include ponding, wet burlap, curing paper, plastic sheets, and membrane curing compound. Other methods are subject to the approval of the Contracting Officer.

PRECAST CONCRETE VAULT RESTROOM BUILDING 133401-10

2. Membrane curing compounds will not be allowed where curing compound will interfere with penetration or adhesion of final finish

I. Colored Concrete

1. Use the same type and brand of cement, coloring agent, aggregates, and other additives throughout the building. Use ingredients from the same lot or manufacturing process. Use aggregates from only one source.

2. Use uniform batches of concrete to ensure consistency of the finished concrete color. Weigh all ingredients. Add color by weight as recommended by manufacturer of the concrete color. Uniformly disperse the color throughout each batch during the mixing operation.

a. Wash and thoroughly clean the mixer and transporting equipment before mixing colored concrete. Repeat each time a change is made to a different color.

J. Structural Joints

1. Joining details other than those detailed below will not be allowed unless shown on shop drawings that are stamped by a Professional Engineer and approved by the Contracting Officer prior to manufacture of buildings.

2. Anchor weld plates into concrete panels and weld together with a continuous weld.

Thoroughly clean welds prior to application of caulk or paint.

3. Join wall components together with two welded plate pairs at each joint.

a. Weld plate: 6 inches long; with one pair located in the top quarter and one pair in the bottom quarter of the seam.

b. Seal inside seams with paintable caulk.

c. Seal outside seams with caulk to match building color or clear.

4. Join walls and roof with weld plates, minimum 3” x 6”, at each building corner.

a. Where the Contracting Officer determines that the joint between walls and the roof is true enough to prevent point loadings on the walls, seal the joint between walls and roof gas-tight with paintable caulk.

b. Where the joint between the walls and roof is not true enough to prevent point loading, grout the joint with approved rigid non-shrinking grout that will distribute the weight of the roof evenly around the perimeter of the building walls.

c. Seal exterior seams with caulk that is clear or matches building color.

5. Join the floor slab and walls with a grout mixture on the interior and two weld plate pairs for each wall component, one near each end of each wall panel, or each corner on each side, whichever is greater.

a. Weld plate: 6 inches long

b. Grout: Provide smooth cover between walls and floor

K. Finishes And Paint

1. Apply materials in accordance with manufacturer’s recommendations.

PRECAST CONCRETE VAULT RESTROOM BUILDING 133401-11

2. Examine surfaces to ensure all are properly prepared to receive finish.

a. Allow a minimum of 14 days curing time for concrete before paints are applied to concrete. Allow longer time when recommended by paint manufacturer.

b. If needed to ensure uniform application, prepare concrete surface for paint application by acid etching with 30% H=hydrochloric acid. Flush with water and allow to thoroughly dry.

3. Painting shall not be done under the following conditions:

a. Temperature is 50°F or below.

b. Surfaces are damp.

c. Dusty areas.

4. Schedule of Finishes

a. Metalwork (steel doors, door vents and frames, and roof posts)

1) One coat metal primer

2) Two coats alkyd oil enamel in Java Brown

b. Exterior surfaces of building walls and roof, unless concrete color manufacturer recommends a different procedure:

1) Two coats of stain

2) Linseed oil (may be applied and allowed to cure for brown buildings)

3) One coat of clear sealer

c. Interior Concrete Surfaces

1) Walls and ceiling of building: Two coats of pigment followed by one coat of clear sealer.

2) Interior floor: One coat of epoxy with a silica sand suspension.

L. Fluid Roofing

1. Apply a minimum of two coats of elastomeric roofing on top of the roof slab.

a. Prepare concrete surface and apply and cure roofing in accordance with manufacturer’s recommended procedures.

b. Minimum coverage: 3 gallons per square (100 ft2)

c. Apply joint tape to hairline cracks between applications of the two coats of elastomeric roofing.

2. This item may be deleted if there are no cracks.

M. Metal Doors And Frames

1. Install steel doorframe in accordance with manufacturer’s recommendations.

a. Fit door accurately in frame

PRECAST CONCRETE VAULT RESTROOM BUILDING 133401-12

b. Mount louvers on door with cadmium or zinc-plated corrosion resistant non-removable metal screws

2. Install hardware in accordance with manufacturer’s instructions after finish painting is completed.

3. Install sweep on bottom of door and adjust so it contacts the threshold when door is closed.

3.2 CLEARING AND GRUBBING

A. Site clearing and grubbing shall be in accordance with Section 311000 “Clearing and Grubbing”.

3.3 EXCAVATION, BACKFILL, AND SITE GRADING

A. Excavation, backfill, and site grading shall be in accordance with Section 312000 “Earthwork” and Section 311204 “Crushed Aggregate Base or Surface Course”.

B. Coordination with the Building Manufacturer

1. Contractor shall coordinate with the manufacturer of the precast concrete building to accommodate installation at the time of delivery.

2. The Contractor shall be responsible to obtain installation instructions from the manufacturer and perform the excavation, backfill, and site grading in accordance with those instructions.

3. The Contractor must have excavation complete prior to delivery of the precast concrete building. The Contractor will be provided 1-week minimum lead-time to have the excavation work performed.

a. The excavation shall be over excavated two feet (horizontal measurement) on each side of the slab to allow for compaction and minor adjustments in orientation.

b. Stockpile excavated material away from the excavation to facilitate crane and delivery truck access. The crane and delivery truck typically need to be side-to-side during placement.

c. Compact the natural ground at the bottom of the vault excavation with a minimum of three passes with an approved whacker-type mechanical tamper.

4. The Contractor must be on site at the time of delivery to perform the backfill operation as soon as the precast concrete building is in place.

C. Bedding

1. The Contractor shall place a leveling course prior to placement of the vault or building.

2. Compact leveling course with one pass of an approved mechanical tamper.

3. Grade leveling course so there will be no high spots in the middle.

4. Compact with a second pass of a tamper.

5. Slope the top of the bedding one percent from back to front of building.

a. Minimum compacted leveling course for building slab shall be 6 inches.

PRECAST CONCRETE VAULT RESTROOM BUILDING 133401-13

D. Backfill

1. Backfill shall be permitted only after the work to be covered has been approved by the Contracting Officer.

2. Backfill shall be placed in 8" thick (loose measurement) lifts and compacted with three complete passes of an approved vibratory compactor.

E. Finish Grading

1. All surfaces and slopes shall be shaped to blend with the original ground line, mounded over or smoothed off, and raked, and left in a uniform and neat condition.

Stockpiled topsoil shall be smoothly distributed over disturbed areas and hand raked to blend with ground line. Final grade shall be flush with top of front slab to provide accessibility.

2. The surface of shall be graded and shaped as shown on the drawings. Surface drainage shall be diverted so that water will not enter into the area.

F. Cleanup

1. After backfilling and grading has been completed, the disturbed area shall be finished to present as near a natural appearance as possible and cleaned up by removing all debris and materials not utilized.

2. Clean building walls, floors, and roof using soapy water.

G. Disposal

1. All unsuitable excavated material, oversize boulders, stumps, small limbs, brush, sod and other construction refuse shall be disposed of off-site at a State-approved disposal site.

END OF SECTION 133401