eagle river elementary school post-earthquake … · 2019. 3. 21. · a post-earthquake school...

ANCHORAGE SCHOOL DISTRICT

March 15, 2019

EAGLE RIVER ELEMENTARY SCHOOL

POST-EARTHQUAKE ASSESSMENTS AND EVALUATION

Prepared For:

Anchorage School District

Facilities Department

1301 Labar Street

Anchorage, Alaska 99515

Prepared By:

BDS Architects

3330 C Street, Suite 200

Anchorage, Alaska 99503

EAGLE RIVER ELEMENTARY SCHOOL | Post-Earthquake Assessments and Evaluation March 15, 2019 Page 1 of 35

TABLE OF CONTENTS

1. ACKNOWLEDGEMENTS ............................................................................................ 2

2. SITE LOCATION MAP ............................................................................................... 3

3. KEY PLAN AND CONSTRUCTION TIMELINE ............................................................... 4

4. EXECUTIVE SUMMARY ............................................................................................ 5

5. EXISTING CONDITIONS ............................................................................................ 7

EXISTING CIVIL/SITE CONDITIONS ....................................................................................................................... 7

EXISTING ARCHITECTURAL CONDITIONS ............................................................................................................... 8

EXISTING STRUCTURAL CONDITIONS ...................................................................................................................17

EXISTING MECHANICAL CONDITIONS ..................................................................................................................19

EXISTING ELECTRICAL CONDITIONS .....................................................................................................................21

EXISTING HAZARDOUS MATERIALS .....................................................................................................................25

6. CONCEPT SOLUTIONS ............................................................................................ 26

OVERVIEW ....................................................................................................................................................26

EARTHQUAKE-RELATED DAMAGE REPAIRS ..........................................................................................................27

EARTHQUAKE-RELATED MITIGATION ..................................................................................................................31

DEMOLITION AND SITE CLEARING ......................................................................................................................32

PROPOSED IMPROVEMENTS - BUILDING REPLACEMENT..........................................................................................32

7. CONSTRUCTION SCHEDULE SCENARIOS ................................................................. 33

PRESUMED TIMELINES FOR DESIGN AND CONSTRUCTION .......................................................................................33

8. SUMMARY OF COSTS ............................................................................................ 34

CONSTRUCTION COSTS ....................................................................................................................................34

COST BREAKDOWN .........................................................................................................................................34

9. ATTACHMENTS...................................................................................................... 35

EXHIBIT A - COST SUMMARY MATRIX

EXHIBIT B - DRAWINGS

EXHIBIT C - PHOTOS OF EXISTING FACILITY

EXHIBIT D – POST-EARTHQUAKE STRUCTURAL MEMO


1. ACKNOWLEDGEMENTS

Anchorage School District Nicholas Bell, Project Manager Email: [email protected] | Phone: (907) 348-5168

Eagle River Elementary School Lisa Prince, Principal Email: [email protected] | Phone: (907) 742-3000 BDS Architects | Architecture and Interior Design Victor Valenote, Principal Architect Email: [email protected] | Phone: (907) 562-6076

BBFM Engineers | Structural Colin Maynard, Structural Engineer Email: [email protected] | Phone: (907) 274-2236

RSA Engineering | Mechanical & Electrical Ralph DeStefano, Mechanical Engineer Email: [email protected] | Phone: (907) 276-0521

Soo Loewen, Electrical Engineer Email: [email protected] | Phone: (907) 276-0521

Estimations | Cost Estimating Jay Lavoie, Estimator Email: [email protected] | Phone: (907) 561-0755


2. SITE LOCATION MAP


3. KEY PLAN AND CONSTRUCTION TIMELINE


4. EXECUTIVE SUMMARY

The purpose of this report is to provide the ASD Capital Planning & Construction Department with a post-earthquake school assessment and evaluation for Eagle River Elementary School. This report will provide information to be used in developing a recommended scope of work for the facility.

Eagle River Elementary School (ERES) is a 58,086 square foot one-story building located at 10900 Old Eagle River Rd in Eagle River, Alaska on an 8.7-acre site owned by Eklutna, Inc. ERES is a K-6 Elementary program with 422 students as of September 29th, 2018. The school provides two regional Special Education Pre-K classes, a Neighborhood K-6 program, and an Open Optional K-6 program with a program capacity for 462 students. The school was red-tagged following the November 30, 2018 earthquake, and deemed unsafe to occupy. The displaced students have been temporarily relocated as follows: ERES Grades 4 thru 6 and all ERES Optional to Birchwood ABC Elementary; ERES Grades K thru 3 to Homestead Elementary; and ERES Preschool to Ravenwood Elementary.

The original Eagle River Elementary School structure was completed in 1961 and included 10 classrooms, an administration area, a kitchen and a gymnasium/cafeteria. This was immediately followed by an 8-classroom addition in 1962, making the facility an 18-classroom elementary school with essentially one double-loaded corridor. The original footprint had a gross square footage of 30,711.

Permanent additions occurred in 1970 (6,745 sf) and again in 1984 (20,630 sf). Since then, over 15 separate renovation projects and upgrades (mechanical, electrical, site, roof upgrades, sprinkler system, etc.) have occurred. Today Eagle River Elementary has 27 teaching stations, a gymnasium, a multipurpose room with a stage and kitchen, an instructional media center (IMC) / library, and an administrative office area.

The original structure and each subsequent addition utilized codes and building trends which were current at the time, but which are now dated and considerably changed. The design team examined the existing structure and compiled their observations of current conditions and observed deficiencies into the following document. The following sources of information were reviewed and assimilated:

▪ Post-Earthquake Building Evaluation by RMI, dated 12-8-18 ▪ Existing building record drawings ▪ ASD District-wide Elementary School Educational Specifications ▪ Hazardous material reports ▪ Various facility information documents compiled from ASD and DEED website

including: o ASD Six-Year Capital Improvement Plan 2017-2023 o ASD Destination 2020 o Eagle River Elementary School Overview o DEED School Facility Information


The purpose of reviewing all this documentation was to prepare the BDS design team with the greatest possible depth of understanding regarding the Eagle River Elementary School, as well as the goals and expectations of the Anchorage School District. After reviewing the available documents, the design team took the following steps:

▪ The Design Team including architects, structural, electrical, and mechanical engineers visited the school to document the existing building conditions and to identify any facility / site deficiencies following the November 30, 2018 earthquake.

▪ Develop written narratives of existing earthquake related damages and recommended repairs.

▪ Developed conceptual Revit model and drawings of the existing school and site. ▪ With ASD input, developed written recommendations to improve the school and

correct deficiencies, organized into four concept solutions. ▪ Obtained cost estimates for each of the proposed concept solutions.

This project analysis report contains the following:

❖ Existing Conditions: Information regarding the current condition of the facility including the building, its utility systems, the site and the presence of hazardous materials post November 30, 2018 earthquake.

❖ Concept Solutions: Four different levels of design solutions have been investigated and are presented. These are the progressive design approaches established by the ASD: ▪ Earthquake-Related Damage Repairs ▪ Earthquake-Related Mitigation (earthquake related damage repairs + code

improvements to comply with Damage Control under ASCE 41-13) ▪ Demolition and Site Clearing ▪ Building Replacement

❖ Estimated Costs for each of the four Conceptual Design Solutions.

❖ Exhibits to further delineate conditions at the school and the proposed Conceptual

Solutions including drawings, sketches, and photography.


5. EXISTING CONDITIONS

The following design team site investigations were performed at Eagle River Elementary School:

• Site Visit 1: Friday 12/28/18 from 10:00am-2:00pm (Architectural – Victor Valenote; Structural – Colin Maynard)

• Site Visit 2: Monday 12/31/18 from 10:00am-3:00pm (Architectural – Victor Valenote; Mechanical – Ralph DeStefano; Electrical – Soo Loewen)

• Site Visit 3: Thursday 2/7/19 from 1:30pm-3:00pm (Architectural – Victor Valenote; Mechanical – Ralph DeStefano; Electrical – Soo Loewen)

The design teams walked through the entire facility to assess and document the existing building conditions directly pertaining to any observable post-earthquake related damages. The roof and most of the exterior site/landscape were covered with snow and not investigated at the initial site visits. Prior to these three site visits, representatives from ASD, Reid Middleton Inc. (RMI), and Eklutna Services made two initial site visits. These visits were documented in a memorandum by RMI dated December 8, 2018, reference Exhibit D – Post-Earthquake Structural Memo.

Existing Civil/Site Conditions

▪ General

The site is 8.7 acres and is generally flat with parking on the north and west side of the school and a bus drop-off loop on the east side. A paved playground, play equipment, and open grass play fields are located on the south and west side of the school. A small ballfield is to the north, and a sledding hill is located at the southeast corner. The site is bordered by roads on three sides: The Old Glenn Highway to the north, Eagle River Road to the west, and Old Eagle River Road to the east. A residential neighborhood is located to the east of the school.

▪ Parking / Site Paving

The parking area and site paving for the school was covered in snow and the design team was unable to investigate the post-earthquake condition. There is no data available to determine what type of structural section is in place beneath the pavement; therefore, for the purposes of this report it is assumed that the structural section is adequate. 232323.

Anchorage Municipal Code requires 1 parking space per 6 students, based on State of Alaska EED capacity provisions.

o Eagle River Elementary School Program Capacity = 462 students


o Existing Parking: 106 spaces provided; 3 of which are accessible spaces. o Required Parking: 75 required parking spaces (448 students X 1 parking

space/6 students); 3 accessible spaces (including 1 van accessible space) are required.

o Existing parking is adequate. No additional parking is required.

▪ Site Circulation and Pedestrian Safety

The current bus drop-off is isolated to the east and functions well. The parent drop-off and local traffic traveling around the site do come into conflict. All traffic areas are intermixed, causing some safety concerns for students and other pedestrians.

▪ Site Enhancements and Amenities

o Play equipment (west side of school) was covered with snow and should be investigated in the spring for any damages.

o Fencing, benches, retaining walls, and planters appeared to be in acceptable condition for their age.

o There is no dumpster enclosure as required by Municipal code. o MOA Title 21 remediation standards may be impacted, depending on the scope

of any damage repairs or upgrades.

▪ Site Drainage

Overall, the site drainage appears to be graded away from the building and there are no apparent problems with storm water runoff.

Existing Architectural Conditions

Code Compliance:

▪ Code History: The building was originally constructed in 1961 under the 1958 Uniform Building Code. It had subsequent Additions in 1962 (under the same code), in 1970 (under the 1967 UBC), and in 1984 (under the 1982 UBC). The building was classified as a one-story mixed occupancy building with E-1, A-2.1 and A-3 occupancies. The construction type was classified as Type V-N construction. With the 1984 addition, the school had a Total Area of 58,086 SF. An automatic sprinkler system was installed throughout the school in 2005 and under the 2000 IBC the construction type of the school was listed as Type V-B. A Component Renewal project providing mechanical and electrical upgrades occurred in 2016 under the 2012 IBC.

▪ Current Code Analysis: Governing codes are the 2012 international building code (IBC), international existing building code (IEBC), fire code (IFC), mechanical (IMC), fuel gas code (IFGC), UPC 2012, and NEC 2014, NFPA 13, and ASHRAE 90.1-2010 as adopted by the state of Alaska.


Proposed Facility: Main school building occupancy (IBC Section 305) - E. (A occupancies associated with Group E occupancies not considered separate occupancy per IBC Section 303.1.3.) Construction Type (IBC Table 503): Type V-B Fire Protection: Automatic sprinklers per 13 AAC 50.020 (37). Fire extinguishers per IBC/IFC, section 906, fire alarm system 907.2.3 as revised by 13 AAC 50.020 (47). Commercial cooking system requires a fire protection system per IBC, section 904.11. Allowable Area: Base Allowable (IBC Table 503): E Occupancy - 9,500 Sf Per Story Building Area Modification (IBC Section 506): Aa = {9,500 + [9,500 x .75] + [9,500 x 3]} Aa = {9,500 + [7,125] + [28,500]} Aa = {9,500 + [35,625]} Aa = {45,125} Total Allowable Area = 45,125 SF per Story Actual Area: Main Floor Level: 58,086 (Mechanical Mezzanine not included per Section 505)

FIRE AREA 1: 32,580 SF - Complies with 2-Hour Firewall between Areas. FIRE AREA 2: 25,506 SF - Complies with 2-Hour Firewall between Areas.

Occupant Load (IBC Table 1004.1.2 / IBC 1004.4): Gym: 3,952 SF / 15 = 264 Occupants MPR: 3,595 SF / 15 = 240 Occupants Library: 3,225 / 100 = 33 Occupants Kitchen: 484 SF / 200 = 3 Occupants Storage; Mechanical: 1,774 / 300 = 6 Occupants Business: 1,735 / 100 = 18 Occupants Educational: 24,390 / 20 = 1,220 Occupants TOTAL: 1,784 Occupants Required Number of Exits (IBC 1021.2.4): 4 Exits Required; 9 Exits Provided - Complies


Required Exiting Width (IBC 1005.3.2): 1,784 Occupants X .2" = 356.8" Total Required - Complies

Gym Exiting Width: 264 Occupants X .2" = 52.8" Total Required - Complies Maximum Path of Travel (IBC 1016.2): 250' - Complies

Maximum Dead-end Corridor (IBC 1018.4, Ex 2): 50' - Complies

Exterior Wall Protection: Per table 602, where exterior property lines are between 10 and 30 feet, exterior walls of Occupancy E construction type V-B shall not be rated. At fire wall, exterior wall shall be one (1) hour rated for 4'-0" on either side of fire wall.

Fire-Resistance Rating Requirements for Building Elements (IBC Table 601): Primary Structure Frame: 0 Exterior Bearing Walls: 0 Exterior Non-Bearing Walls: 0 Interior Bearing Walls: 0 Interior Non-Bearing Walls: 0 Floor Construction: 0 Roof Construction: 0

Openings: Per table 705.8, unlimited unprotected openings are permitted in an unprotected and sprinkled building.

Corridor Construction: None required per IBC, Section / Table 1018.1 because of the automatic sprinkler system.

All exit doors serving an Occupant load of 50 or more for E occupancy require panic hardware per IBC, section 1008.1.10.

Emergency Lights & Illuminated Exit Signs: Required per IBC, Sections 1006 and 1011 where rooms, or the building, require two exits.

Roof Covering: Class C per IBC, Section / Table 1505.1.

Interior finishes: Class C


Exterior Observations:

▪ Roof

The roof was covered with snow and not inspected at the post-earthquake site visit. However, two visible leaks were documented at the 12/31/18 site visit. Both leaks were located in the generator room. It is likely that the earthquake either caused or exacerbated these leaks. The existing low-slope roofs mainly consist of Insulated Roof Membrane Assembly (IRMA) roofs which were installed in 1984 and 2000. A few small roof areas were replaced with an EPDM system in 2005. The existing roofs have been documented to be failing. ERES is currently scheduled for a complete re-roof project as part of the upcoming 2019 School Bond Proposal. It should be understood that it would be standard practice to remove and replace the roof in its entirety to perform the necessary structural / seismic upgrades related to earthquake damage or mitigation. To perform these tasks without removing the roof would more than double the costs of such an upgrade and lead to unknown consequences associated with accessing the areas in need of structural modifications.

▪ Exterior Walls

The existing exterior walls consist of 4” of brick veneer, 2” rigid insulation, and 6” concrete masonry units (CMU) with interior gypsum wallboard and other interior finishes. The approximate R-value of existing exterior walls is R-10; below the R-21 recommendation for Anchorage, Alaska. The brick veneer is damaged in several areas and in need of repair and/or replacement (see Exhibit C - Photos).

▪ Exterior Windows and Doors

Exterior windows in the original 1961 structure, the 1962 addition, and the 1970 addition were replaced as part of a project in 2014 with an insulated fiberglass window system. These windows performed well, and no post-earthquake damages were noticed. Several exterior windows in the 1984 addition were compromised and cracked, primarily on the north side Classrooms 23, 24, and 25 (see Exhibit C - Photos). These windows have been temporarily boarded over from the exterior. Broken glazing is still in place on the interior side. Generally, these 35-year-old wood framed windows are worn and past their useful life.

Exterior Doors and frames are hollow metal and appear to be functioning well.


Interior Observations:

▪ Classrooms

General: Primary and Intermediate classrooms are notably smaller than the Districtwide Education Specifications (DWES) by approximately 15%; Kindergarten classrooms by 25%. In kindergarten classrooms, 30 SF bathrooms are much too small to replace the existing fixtures with contemporary plumbing fixtures and conform to ADA standards. Flooring: Carpeting and vinyl tile throughout all classrooms are worn, stained and past their useful life. Although classroom flooring is not directly damaged from the earthquake, earthquake-related debris is scattered throughout the classroom floors. Wall finishes: Overall, gypsum board wall assemblies performed well. There is sporadic seismic cracking at soffiting walls on the corridor side of classrooms. There is also prevalent damage to edges where sheetrock walls meet with CMU walls. CMU walls have separated at corners throughout most classrooms. CMU walls have seismic cracking throughout in classrooms, mostly stemming from mechanical penetrations through the wall (see Exhibit C - Photos). Ceilings: Suspended acoustical ceiling systems are severely damaged/compromised in the 1984 addition classrooms, along with some lighting and mechanical ductwork (see Exhibit C - Photos). Adhesive applied acoustical ceiling tiles have sporadically become partially dislodged or have popped off completely throughout all of the 1960 and 1961 classrooms (see Exhibit C - Photos). Fixed Casework: Casework throughout all classrooms are worn, stained, marred and past their useful life. Although, perhaps not directly damaged from the earthquake, doors and drawers will need to be adjusted to function properly. Classroom casework does not meet DWES criteria for cubbies. Kindergarten classrooms do not have kitchenettes. Fixtures & Equipment: Analog clocks/speaker systems were noticeably damaged in several rooms (see Exhibit C - Photos). Marker boards, tack boards, projection screens, etc., appear to show no signs of any earthquake-related damages.

▪ Corridors

General: Corridors are wide and spacious and meet the Districtwide Education Specifications (DWES) standards. Circulation functions well. The Open Optional program conveniently accesses the defined area of the 1962 addition. Flooring: Vinyl tile throughout all corridors are worn, stained and past their useful life. Flooring is damaged from the earthquake and cracking in several locations. Most notably in the main entry corridor and the corridor separating the 1961 and


1962 areas (see Exhibit C - Photos). There is also some cracking at a few transitions into classrooms. Wall finishes: CMU corridor walls have considerable seismic cracking throughout the facility, though deemed cosmetic in nature. Vertical cracking occurred at all mortar joints between corridor walls and classroom entry alcoves (see Exhibit C - Photos). CMU walls have separated at corners in classroom alcoves. Hairline cracking following block coursing can also be found throughout the corridors. Ceilings: Suspended acoustical ceiling systems are severely damaged/compromised in the 1984 addition classrooms, along with some lighting and mechanical ductwork (see Exhibit C - Photos). Adhesive applied acoustical ceiling tiles have sporadically become partially dislodged or have popped off completely at Vestibule 402 (see Exhibit C - Photos). Glazing: Aluminum framed storefront systems have glass separating from sealant at the entry in to the Main Office 47 and between corridors 401 and 402. Glazing is cracked at entry storefront into IMC 62 (see Exhibit C - Photos).

▪ Restrooms

General: Most of the restrooms were upgraded as part of 2004 project. Restrooms in the 1985 Addition including the kindergarten restrooms are not ADA compliant. Although the school has the requisite number of toilets, there is not a dedicated public restroom in the school. Plumbing fixtures and toilet partitions are in generally good condition. Flooring: Restroom ceramic tile flooring in the restrooms is generally well maintained and undamaged. There are a few cracked floor tiles in Restroom 64 (see Exhibit C - Photos). Wall finishes: CMU walls have considerable seismic cracking throughout the restrooms and deemed cosmetic in nature, most notably at corner conditions. Hairline cracking following block coursing can also be found throughout. Ceramic tile wainscot is also damaged at corner conditions (see Exhibit C - Photos). Sheetrock cracking and separation at corner conditions is prevalent in Restrooms 64 and 66. Ceilings: Sheetrock restroom ceilings are generally in good condition and undamaged, except for a few locations at sheetrock ceilings to wall edge condition.

▪ Administration Area

General: The Administration area does not have an ideal secure entry sequence. Due to the existing layout, it is possible to completely bypass the offices and gain access


directly to the classrooms without passing a supervised area. It is impossible for office staff to look out the window to see who is at the entry door. A camera-based security system is in place, but this does not replace the physical ability to directly see who is approaching or coming in and out. Flooring: Carpeting throughout admin area is generally worn, stained and past its useful life. Although classroom flooring is not directly damaged from the earthquake, earthquake-related debris is scattered throughout. Wall finishes: There is sporadic seismic cracking at sheetrock and CMU corner conditions. Ceilings: Suspended acoustical ceiling system is damaged/compromised in Workroom 49 (see Exhibit C - Photos). Fixed Casework: Casework in the Main Office 47 appears to be undamaged and functioning properly. Casework in the workroom 49 is worn, stained, marred and past its useful life. Although, perhaps not directly damaged from the earthquake, doors and drawers will need to be adjusted to function properly. Fixtures & Equipment: Analog clocks/speaker systems was noticeably damaged in Workroom 49 (see Exhibit C - Photos). Marker boards, tack boards, projection screens, etc., appear to show no signs of any earthquake-related damages.

▪ Gymnasium Area

General: The Gymnasium is a part of the 1984 addition and absorbed the most severe damage as pertaining to the structural integrity of the building (reference Structural Narrative). Flooring: Vinyl athletic flooring is generally worn, stained and past its useful life. Flooring is buckling in a few locations at the southwest quadrant and most likely caused by seismic movement. Earthquake-related debris is scattered throughout. Carpeting in the P.E. Office 30 is generally worn, stained and past its useful life. Although the carpet flooring is not directly damaged from the earthquake, earthquake-related debris is scattered throughout. Wall finishes: CMU walls have considerable seismic cracking throughout the Gym, P.E. Office 30 and Storage Room 29, and deemed cosmetic in nature, most notably at corner conditions. Hairline cracking following block coursing can also be found throughout. Acoustical fabric wall treatment in the gym is worn, stained and past its useful life. The acoustical wall treatment covers the entirety of the walls from 8’ and above. It would need to be removed to inspect and repair CMU walls.


Ceilings: A portion of the ceiling in Gymnasium 28 and Storage Room 29 have been removed for purposes of emergency investigation and temporary remediation. Adhesive applied acoustical ceiling tiles have sporadically become partially dislodged or have popped off completely throughout the entirety of the gym (see Exhibit C - Photos). Suspended acoustical ceiling system is damaged/compromised in P.E. Office 30 (see Exhibit C - Photos). Fixed Casework: Casework in P.E. Office 30 is worn, stained, marred and past its useful life. Although, perhaps not directly damaged from the earthquake, doors and drawers will need to be adjusted to function properly. Fixtures & Equipment: Basketball goals, climbing ropes, retractable room divider, and wall-mounted safety pads, etc., appear to show no signs of any earthquake-related damages.

▪ Multipurpose Room

General: The Multipurpose Room 32 (MPR), Storage Room 33, and Kitchen 35 are a part of the original 1961 building, while the stage area / Music Room 38 is part of the 1984 addition. Flooring: Vinyl tile flooring is generally worn, stained and past its useful life. Flooring has a significant crack running north-south near the center of the room and directly related to damage from the earthquake, though considered cosmetic in nature. flooring is also damaged at transition between the MPR and Gymnasium (see Exhibit C - Photos). Earthquake-related debris is scattered throughout. Carpeting in the stage area / Music Room 38 is generally worn, stained and past its useful life. Although the carpet flooring is not directly damaged from the earthquake, earthquake-related debris is scattered throughout. Ceramic tile flooring in the Kitchen appears undamaged. Wall finishes: CMU walls have considerable seismic cracking throughout Multipurpose Room 32 (MPR), Storage Room 33, and Kitchen 35, and deemed cosmetic in nature, most notably at corner conditions. Hairline cracking following block coursing can also be found throughout. Ceramic tile in Room 36 is damaged at corner conditions. Ceilings: Adhesive applied acoustical ceiling tiles have sporadically become partially dislodged or have popped off completely (see Exhibit C - Photos).


Fixed Casework: Casework in P.E. Office 30 is worn, stained, marred and past its useful life. Although, perhaps not directly damaged from the earthquake, doors and drawers will need to be adjusted to function properly. Fixtures & Equipment: Kitchen equipment appears to show no signs of any earthquake-related damages. Storage shelving in Room 33 has been damaged. Retractable tables and benches appear to be undamaged. The basketball goal, retractable wall at the stage, and stage lighting also appear undamaged.

▪ IMC (Library) and Pre-K Classrooms

General: The Library and adjoining Pre-K Classrooms are all a part of the 1970 addition. Flooring: Carpeting throughout IMC area and Pre-K Classroom 58 is generally worn, stained and past its useful life. Although IMC flooring is not directly damaged from the earthquake, earthquake-related debris is scattered throughout. Pre-K classroom 60 vinyl flooring appears well maintained and undamaged. There is seismic cracking in the concrete floor at Vestibule 57 and Vestibule 62A (see Exhibit C - Photos). Wall finishes: CMU walls have seismic cracking throughout and deemed cosmetic in nature, most notably at corner conditions. There is sporadic seismic cracking in sheetrock, most notable at glue-lam beams. Ceilings: Painted wood plank ceilings are old, worn, and past their useful life, but appear to be mostly undamaged. There are a couple of planks with cracking (see Exhibit C - Photos). Fixed Casework: Casework in the Pre-K Classrooms is worn, stained, marred and past its useful life. Although, perhaps not directly damaged from the earthquake, doors and drawers will need to be adjusted to function properly. Fixtures & Equipment: Book shelving in IMC 62 appears to be undamaged and functioning properly. Marker boards, tack boards, projection screens, etc., appear to show no signs of any earthquake-related damages.

▪ Doors

General: Doors and door frames appear to have performed well. Only one door, to Classroom 3, does not function properly. It does not close all the way, and likely need adjusting.


Existing Structural Conditions

▪ Seismic Performance Rating of Existing Structure

Based on a Tier 1 ASCE 41-17 analysis and a qualitative assessment by the Engineer, the existing structure at Eagle River Elementary School was rated at a rating of 4 on a scale of 1 to 10. This puts it just below the level of meeting the criteria for the Life Safety level (LS); see Table 1 below for additional information on structural ranking. Minimal improvements to the 1984 addition would get it to at least a 5, if not higher.

Table 1: Seismic Performance Objective ▪ Existing Structural Systems

The structure of the original building constructed in 1961 and the first addition to the south constructed in 1962 is 3” tongue and groove wood decking roof supported by glue-laminated beams spanning to CMU bearing walls. The one exception is the north wall of the Multipurpose Room, where the glue-laminated beams are supported by columns formed with five 2x8 members in a 2x8 wood stud wall. The lateral system is the flat decking diaphragm transferring loads to CMU corridor walls and classroom demising walls at the low roof and to three perimeter CMU walls and the plywood sheathed stud wall at the Multi-Purpose Room.


The 1970 addition to the west includes the library and a couple of classrooms. It also consisted of timber decking spanning between glue-laminated beams supported by CMU bearing walls. The glue-laminated beams slope from a peak to the eaves at the north and south walls. The decking acts as a diaphragm to deliver lateral loads to the CMU walls. The 1984 addition included classrooms wrapping around the northwest corner and a new, seismically separate gymnasium at the northeast. The structure is a plywood roof supported by open web timber joists spanning between CMU bearing walls. In the gymnasium addition, there is also a mechanical mezzanine framed with plywood and a concrete topping slab supported by open web wood joists. The roof over the mezzanine is plywood over timber I-joists supported by CMU walls. The lateral load resisting system is the blocked plywood diaphragm spanning to the CMU shear walls. In 2006, a structural upgrade was constructed to the original building and the 1962 and 1970 additions. No work was done on the 1984 addition. The work consisted of reinforcing some glue-laminated beams, adding over-framing in a snow drift location south of the Multi-Purpose Room, and adding four columns to laterally support the east and west walls of the library. With two major exceptions, the structure withstood the recent 7.0 magnitude earthquake well. The exceptions were the roof at the north and south walls of the 1984 addition. When the walls became disconnected from the roof diaphragm, they deflected outwards and caused some veneer block to become dislodged. There are also some vertical cracks in the masonry at the classroom vestibules between the corridor wall and the wall perpendicular to the corridor.

▪ Observed Problems

o The north wall of the gymnasium has become separated from the roof. There is no positive connection between the masonry and the roof diaphragm. The wood nailer on the top of the CMU wall failed in cross-grain tension.

o The south wall of the roof over the mechanical mezzanine in the gymnasium addition has become separated from the roof diaphragm. The timber I-joists have pulled from their hangers. There is no positive connection between the CMU wall and the roof diaphragm.

o Block veneer has become dislodged, or was removed, at the south wall of the gymnasium.

o There are full height cracks in the mortar joints between the corridor walls of the original and 1962 addition and the vestibule walls.

o The ASCE 41-17 Tier 1 analysis identified the following concerns:


• Inadequate connections of the 1984 addition masonry walls to the roof and mezzanine diaphragms. The parallel to joist detail consists of a 4x4 bolted to the top of a channel, which relies on cross grain tension to resist loads perpendicular to the wall. A similar detail was used at the timber I-joists to the south wall of the gymnasium mechanical mezzanine roof.

• In the 1984 addition, the Quick Check for wall shear results in a shear of 71 psi, which is slightly over the allowable of 70 psi.

• The original building does not meet the reinforcing steel requirement for the vertical steel ratio nor the total reinforcing steel ratio. The 2006 upgrade should have examined the shear wall capacities. The fact that no upgrades were required indicates that the walls are adequate for current lateral loads.

• Wood ledgers are installed that will be subject to cross grain bending.

• The wood decking diaphragms have spans in excess of 24 feet. The 2006 upgrade should have examined this and added plywood, if it was a problem. That was not part of the upgrades, so it is not likely to need upgrade.

Existing Mechanical Conditions

▪ General

Mechanical conditions include assessment of the following systems: plumbing, heating, ventilation, controls and sprinkler systems.

▪ Design Parameters

The latest adopted version of the following codes and standards, as amended by the Municipality of Anchorage, are currently applicable for this project:

• International Building Code • International Energy Conservation Code • International Mechanical Code • International Fuel Gas Code • Uniform Plumbing Code • International Fire Code • NFPA 13, Standard for Installation of Sprinkler Systems • SMACNA – Sheet metal design standards • National Electrical Code • Americans with Disabilities Act (ADA) • ASHRAE/IES Standard 90.1


• Anchorage School District General Mechanical and Electrical Design Standards

• Anchorage School District District-Wide Education Specifications • Anchorage School District Instructional Technology Plan

Special attention shall be given to the Anchorage School District Design Standards. It is understood that the current standards are a working document in progress that shall be continually modified by changing technology and innovative design solutions. Mechanical system design for this project shall comply with the standards except where it is in the best interest of the District to deviate from the standards to provide systems with better operating characteristics in terms of cost, energy efficiency, operation, maintenance or simplicity. The design parameters listed in this document may be considered a working document as well. As design progresses, the parameters in this document may be revised because of changing technology, payback analysis and/or feedback from Anchorage School District Personnel.

▪ Mechanical Systems

The mechanical systems in the school varied in age and condition. The original school was constructed in 1961; there have been three major addition projects at the school, in 1962, 1971 and 1984. In 2016 the school underwent a Component Renewal project upgrading the older mechanical equipment. The upgrade replaced most of the air handling units, 1961 area cabinet unit ventilators, temperature controls, and boiler burners. The mechanical equipment was surveyed after the November 30, 2018 earthquake. Note our survey was limited to a visual observation, we did not operate systems that were not running at the time of our survey. The 1961, 1962, and 1971 areas had minor damage; the 1984 area had substantial ceiling failures resulting in fallen diffusers and grilles, and branch ductwork.


The following are recommendations to address earthquake related mechanical deficiencies in the school:

o Minor heating system leaks were noted above the ceiling in room 66A / janitor’s closet, room 41/boiler, and room 55 / generator. The piping leaks should be located and repaired.

o Due to the damage sustained to the school in general and the leaks noted above ASD may wish to pressure test the existing piping and repair any leaks


that develop. Much of the piping is above inaccessible ceilings so any leaks will likely require the ceiling be opened up.

o There are numerous places throughout the school where the sprinkler heads where displaced and the escutcheon plates were dislodged.

o The library area has exposed ductwork and it appears as if a few of the large diffusers shifted and are not properly aligned. The diffusers should be realigned and inspected to confirm they are secure to the ductwork (approximately 15 diffusers).

o The shrouds on the ceiling fans in Room L1 were missing and should be replaced.

o Approximately one quarter of the suspended ceiling systems in the 1984 wing have collapsed; specifically, rooms 19, 20, 21, 22, 23, 24, 25, and 26. Replace the damaged ductwork, diffusers and return grilles in these locations.

o In the areas were the ceiling collapsed it was evident that some diffusers and grilles were not supported from the structure and were resting on the ceiling tiles. We recommend all the diffusers and grilles in this area be inspected and restrained from the ceiling as necessary (approximately 40 diffusers/grilles.)

o Due to the damage done to the school in general, we recommend that most of the HVAC systems be recommissioned. Including testing of all controls in the school and rebalancing the systems in the entire school.

Existing Electrical Conditions

▪ General

Electrical conditions include assessment of the following systems: power distribution, lighting and lighting controls, telecommunications, fire alarm, security, intercom and paging, clock, and surveillance camera systems.

▪ Design Parameters

The latest adopted version of the following codes and standards, as amended by

the Municipality of Anchorage, are currently applicable for this project:

• International Building Code

• International Fire Code

• NFPA 70 – National Electrical Code

• NFPA 72 – Standard for Installation of Fire Alarm Systems

• NFPA 101 – Life Safety Code

• Americans with Disabilities Act (ADAAG)


• Anchorage School District General Mechanical and Electrical Design

Standards

• Anchorage School District District-Wide Education Specifications

• Anchorage School District Instructional Technology Plan

Special attention shall be given to the Anchorage School District Design

Standards. It is understood that the current standards are a working document in

progress that shall be continually modified by changing technology and innovative

design solutions. Electrical system design for this project shall comply with the

standards except where it is in the best interest of the District to deviate from the

standards to provide systems with better operating characteristics in terms of

cost, energy efficiency, operation, maintenance or simplicity.

The design parameters listed in this document may be considered a working

document as well. As the design progresses, the parameters in this document

may be revised because of changing technology, payback analysis and/or

feedback from Anchorage School District Personnel.

▪ Existing Electrical Systems

The electrical systems in the school varied in age and condition. The original school

was constructed in 1961 and there have been three major renovations since then:

1962 (south end classrooms), 1971 (library), 1984 (gym). In 2016, the school

underwent a Component Renewal Project, which upgraded older mechanical

equipment and DDC systems, and older electrical distribution equipment.

During the recent electrical distribution upgrade, both distribution switchboards and

a few branch lighting panelboards were upgraded with new. There are still existing

branch lighting panelboards that are nearing or have exceeded their useful life

expectancy. These panels primarily serve classrooms and the kitchen and are

recessed into CMU walls effected by the earthquake.

The school has an existing 55kW, 120/208V, 3-phase diesel-fired standby generator,

which serves most of the building’s heating loads and select lighting. The diesel

generator and automatic transfer switch were installed in 1984. Per discussion with

James Shook at ASD, the generator was recently tested and assessed by ASD. He has

vibration isolation parts on order, which James will be replacing himself;

nonetheless, the generator is currently operational.


The existing fire alarm system is a GE EST3 fire alarm system and was upgraded in

2011. The main control panel is located in the main vestibule and had 4 alarms

recorded in the history.

The intercom and paging system were upgraded in 2011. The existing intercom system rack is located in the Main Office Rm 47. The existing camera system at the school is an analog, 6-camera system. There is a wall monitor in the Principal’s Office and Main Office that showed 6 operational camera feeds.


o Eagle River Elementary School was visited on December 31, 2018 and

February 7 to complete the earthquake assessment. Prior to these visits,

ASD and contractors made immediate and necessary corrections such as

reattaching the automatic transfer switch to the wall. Ceilings and light

fixtures were also provided with additional support wires to prevent

further collapse.

o In the 1984-constructed section of the building, approximately 25% of

the dropped ceilings had failed in most of the classrooms, and as a

result, some of the T8, fluorescent troffers were suspended fully or

partially below the damaged ceiling. Most of the light fixtures appeared

to be in reusable condition, but some of the light fixtures will require

replacement.

o In other 1984-constructed sections of the building, some surface-

mounted, T8 fluorescent fixtures were not operational. It could not be

determined during the site visit why the fixtures did not turn ON when

switched ON. Some possible reasons are:

• The lamps need replacement

• The wiring to the fixture may need to be re-examined and re-

terminated

• The fixture needs to be replaced

For the purpose of this assessment and for cost estimation purposes, it

will be assumed that fixtures need to be replaced.

o The gym and MPR were among the spaces constructed in 1984. The

lighting in these areas were pendant-mounted. The support wires in

these spaces will need to be replaced


o The emergency lighting is provided via wall-mounted or ceiling-mounted

dual-head “bug eye” fixtures. These fixtures were still mounted on the

walls, and physically did not appear to have any damage, but the

raceway between two bug eye lights in the gym was damaged and needs

replacement. A full emergency lighting test throughout the test is

recommended before moving staff and students into the building.

o Exterior emergency lighting at the exit discharge were mostly in good

condition, but one fixture had been damaged and needs to be replaced.

A full emergency lighting test throughout the building is recommended

prior to moving staff and students back into the building.

o The exterior lighting was all LED (recently replaced) and were mostly

operational and appeared to be in good condition. When it became

noticeably darker outside, most of the exterior lights turned ON. The

area where the light fixtures did not automatically turn ON was the

south wing of the school (constructed in 1962). The issue may be in the

wiring or the exterior lighting controller that is associated with the

fixtures at the south end of the school. The pole-mounted lights and

other building-mounted lighting turned ON automatically.

o The receptacles were still in the walls, and physically did not appear to

have any issues. Still, parts of the school have wiring in the school that is

over 58 years old; therefore, the integrity of the insulation may have

been compromised during the earthquake. Device plates appeared to be

in a similar condition as before the earthquake.

o The two electrical panels in the kitchen are recessed into CMU walls, and

had not been replaced as part of the recent component renewal. The

panel doors will not latch closed. The panel doors and latch will need to

be replaced.

o In the 1961 and 1962 parts of the building, the corridors were provided

with a dropped ceiling below an existing tie which has glued on tiles.

After the earthquake, some of these tiles have come loose and are

sitting on top of piping, raceways, recessed light fixtures, and ceiling

grids above the dropped ACT ceiling. The dropped ceiling and the

existing ceiling above will most likely need to be replaced, as a result, all

of the existing raceways which are mounted to the glued on tile ceiling

will need to be removed, and reinstalled. It’s not clear at this time

whether the contractor would be able to remove and reinstall without

damaging the existing circuits.


o One corner of the generator had a vibration isolator missing, and there

were 2x4 sections placed below to support the generator in its place.

According to ASD, the part is currently on order.

Existing Hazardous Materials

▪ Overview

Asbestos and other hazardous materials are known to be present in the school and will likely have an impact on the planned renovations. No site inspection or survey has been performed on the school yet for this project. However, EHS-Alaska Inc. has extensive previous information and experience with this school.

The extent and costs of the required removal or disturbance of these materials varies depending on the concept solution and are indicated in Exhibit A - Cost Summary Matrix. These costs will be further developed as the design progresses. Hazardous materials in the building include asbestos-containing materials, lead-containing materials, mercury containing lamps, mercury containing thermostats and switches, PCB-containing ballasts in fluorescent light fixtures, smoke detectors and self-illuminating exit signs with radioactive components, refrigerators or other items with ozone depleting substances, and glycol in the heating system.

• Further detail on hazardous materials in the building is included in Exhibit G – Hazardous Materials Report.


6. CONCEPT SOLUTIONS

Overview

Four proposed Concept Analysis scenarios have been investigated and are presented in this report. Specific repairs and improvements are described under each solution, including estimated cost. The proposed designs conform to the progressive approach benchmarks established by ASD. All products, materials and systems will meet the most current version of the ASD School Facilities Construction Design Standards.

NOTE: The numbering of items delineated under each of the following scenarios corresponds to those numbers indicated on both Exhibit A – Cost Summary Matrix and Exhibit B - Drawings. A. Earthquake-Related Damage Repairs

Provides only those repairs directly related to deficiencies resulting from earthquake damage. Restores and improves the facility to its pre-earthquake condition for continued service. This solution also addresses any required code and safety upgrades triggered by the necessary repairs. This option does not address any program deficiencies. After completion of this option, the building would be available for occupancy. B. Earthquake Related Damage Repairs plus Damage Control Improvements

Provides all the Earthquake-Related Repairs plus code and building improvements. This solution involves bringing the building up to the Damage Control performance level under ASCE 41-13. No additional square footage, and no educational deficiency improvements are included with this solution. C. Demolition and Site Clearing

This solution provides all costs associated with clearing the site, including the removal of foundation systems. D. Facility Replacement

The existing school would be replaced with a new facility built on the existing school site. The new building would be equal in square footage and expected to serve for 40-50 years.


Earthquake-Related Damage Repairs

(Reference Exhibit B - Drawing A2) A1. Architectural: Remove damaged/cracked brick veneer and replace with matching brick

veneer with the addition of an expansion joints at all corner locations (approximately 1000 SF).

A2. Architectural: Paint exterior brick veneer throughout. With the extent of patched and repaired brick veneer, it will be necessary to paint brick veneer in its entirety for uniformity of color (approximately 9,000 SF).

A3. Architectural: Replace exterior windows in 1984 addition. a. Provide insulated fiberglass window system to match the 2014 project.

A4. Architectural: Epoxy grout exposed CMU seismic cracks throughout the building

(approximately 1000 linear feet). A5. Architectural: Paint interior CMU walls throughout. With the extent of patched and

repaired CMU cracking, it will be necessary to paint CMU in its entirety for uniformity of color/texture.

A6. Architectural: Repair gypsum wallboard (GWB) cracks throughout the building.

a. Tape, mud and repaint to match existing adjacent surfaces.

A7. Architectural: Replace vinyl tile flooring in areas where damaged. Because of the age and wear to existing tiles, large areas should be replaced to provide unity of color/pattern. Replace tile at the following locations: a. Corridor 400 b. Corridor 600 c. MPR 37

A8. Architectural: Adjust all doors and drawers to casework throughout the building.

A9. Architectural: Demolish and replace suspended acoustical ceiling systems in the 1984

Addition, Workroom 49, Office 43, and Vestibule 701. A10. Architectural: Demolish and replace adhesive applied acoustical ceiling tiles

throughout (approximately 20,000 SF). A11. Architectural: Repair glazing at metal framed storefronts at Main Office 47, between

Corridor 401/402, and IMC 62.


A12. Architectural: Demolish and replace cracked ceramic floor tiles in Restroom 64.

A13. Architectural: Demolish and replace damaged ceramic tile wainscot in Restrooms 64

and 66. A14. Architectural: Demolish and replace vinyl athletic flooring in Gymnasium 28. A15. Architectural: Demolish existing acoustical wall treatment in Gymnasium 28 and

replace with fabric wrapped acoustical panels. A16. Architectural: Adjust door closers throughout. S1. Structural: Reattach the north wall of the gymnasium to the roof diaphragm.

a. Remove the existing parapet, roofing and plywood at the last joist space, remove and replace the damaged nailer at the top of the CMU wall, install a 4x4 at 4’-0” on center between the nailer and the first joist, install a Simpson hold-down or tension tie at each 4x4 with an epoxy anchor into the bond beam at the top of the CMU wall, reinstall the plywood and nail to the joists, nailer, and new 4x4’s, reinstall the parapet and roofing.

S2. Structural: Reattach the south wall of the gymnasium to the roof diaphragm. a. Remove the existing parapet, roofing and plywood at the last joist space, remove

and replace the damaged nailer at the top of the CMU wall, remove and replace the damaged joist hangers, reinsert the joists into the new hangers, connect a Simpson hold down or tension tie to the existing joists at 4’ on center with an epoxy anchor into the bond beam at the top of the CMU wall, reinstall the plywood and nail to the joists and nailer, and reinstall the parapet and roofing.

S3. Structural: Repair the vertical cracks at the CMU vestibule walls. a. Remove the existing loose mortar from both sides of the joint for the full height of

the wall, insert a backing rod and sealant on each side of the wall, paint to match the existing wall (26 locations).

S4. Structural: Replace the dislodged block veneer at gymnasium walls.

a. Install new or additional tie-backs to the CMU behind the rigid insulation, install new block veneer in the openings where the original block veneer has been removed (approximately 500 SF).

M1. Mechanical: Repair piping leaks above the ceiling in room 66A / janitor’s closet, room

41/boiler, and room 55 / generator.

M2. Mechanical: Pressure test the heating system piping and repair any leaks that develop.


M3. Mechanical: Repair / replace sprinkler heads and escutcheons (approximately 25 locations).

M4. Mechanical: Realign diffusers in library 62 and room 61. Inspected to confirm all

diffusers are secure to the ductwork (approximately 15 diffusers). M5. Mechanical: Replace shroud on ceiling fans in Pre-K Classroom 60. M6. Mechanical: Replace the ductwork, diffusers and return grilles in Rooms 19, 20, 21, 22,

23, 24, 25, and 26 (approximately 1/4 of each room). M7. Mechanical: Secure diffusers and grilles in the 1984 portion of the school

(approximately 40 diffusers/grilles). M8. Mechanical: Recommission HVAC systems, including testing of all controls in the

school and rebalancing the systems in the 1984 addition.

M9. Mechanical: Review seismic hold downs for mechanical systems and correct any deficiencies. Know equipment with missing or inadequate seismic restraints include: Boilers, gas piping, boiler chimneys, heating water expansion tank, unit heater in gym storage room, some heating piping.

E1. Electrical: Interior Lighting. Replace interior light fixtures throughout the facility that

had become damaged with new light fixtures that match existing. In classrooms 23, 24, and 25, all light fixtures will be replaced with new LED fixtures. All pendant-mounted lights will need to be adjusted so that the light fixtures are level (library, MPR, and Gym). • Recessed Fluorescent T8 Troffers – 40 fixtures • Surface-Mounted Fluorescent T8 Lights – 20 fixtures • Recessed Incandescent Can Lights – 9 fixtures • Pendant-Mounted LED lights (Gym) – 6 fixtures

E2. Electrical: Emergency Lighting. Replace surface metal raceway (SMR) and wiring in the north wall of the gym between two emergency bug eye light fixtures. Provide new 3/4" painted surface metal raceway with 2#12, 1#12G. The two fixtures are approximately 30’ apart. Replace damaged dual head remote emergency light fixture outside library with new. Test emergency lighting system and correct deficiencies before occupancy.

E3. Electrical: Lighting Control Devices. Replace damaged wall-mounted occupancy sensor switches with new in place. • PE Office Rm 30 • Storage Rm 33


• Storage Rm 27 • Art Storage 26A

E4. Electrical: Fire Alarm System. The fire alarm system appeared to be operational with 4 alarms listed under Alarm History; however, it’s not clear at this time whether the alarms occurred before or after the earthquake. We recommend that the fire alarm system be tested prior to occupancy. Additionally, ceiling-mounted fire alarm devices will need to be removed and reinstalled after ceilings are replaced, and some wall-mounted equipment/devices will need to be reattached. Smoke detectors and heat detectors should all be replaced with new.

E5. Electrical: Intruder Alarm Security System. The security system appeared to be

operational as the school is able to be armed and disarmed. Ceiling-mounted sensors will need to be removed and reinstalled after ceilings are replaced. A motion sensor was hanging from the ceiling at one location Hall 300. The wiring to this sensor should be replaced with new. Any known alarms on the security system should be addressed and devices should be replaced as needed.

E6. Electrical: Clock/Speaker Mounting Panel. The clock and speaker mounting panel is

crooked and needs to be remounted in many locations. For cost estimation purposes, assume all clock/speaker locations require adjustment (classrooms, offices, administrative work rooms).

E7. Electrical: New Branch Conduit and Wiring. In the 1961 and 1962 area of the building,

all the existing lighting, receptacle, motor equipment, heater, data, fire alarm, security intruder alarm, access control, and surveillance camera systems, intercom and paging, and control circuits will need to be demolished to support the ceiling replacement. Although new power conductors can be spliced with existing power conductors for receptacle, motor, and other power circuits; new runs of cabling for data and other special system cables are recommended.

E8. Electrical: Magnetic Door Holder. The magnetic door holder needs to be reattached to the wall outside Main Office in Hall 500.

E9. Electrical: Exterior Lighting. The exterior lighting control system including contactors, light fixtures, and associated wiring for the exterior lights mounted to the south end of the building will need to be tested and replaced with new as required.

E10. Electrical: Wireway. An existing wireway in Hall 500 needs to be replaced. E11. Electrical: Generator: Install the 4th vibration isolator and test the generator and

standby power system per NFPA 110 requirements to confirm the generator is operational.


H1. HazMat: Mitigation for all items listed above. Proper removal, disposal, and testing

required.

Earthquake-Related Mitigation

(Reference Exhibit B - Drawing A3)

Unless noted otherwise, the Proposed Improvements from the Earthquake-Related Damage Repairs solution described above are also provided as part of the Earthquake-Related Mitigation project.

C1. Civil/Site: Improve site access to main entrance to enhance security.

a. Remove sidewalk to the existing entry front door and replace with hardscape to the newly located main entry. 1) Area of new concrete walks = 4,000 SF.

C2. Civil/Site: Required Landscaping improvements per Title 21.

a. 10% of construction costs associated with exterior building improvements.

A17. Architectural: Improve exterior block veneer system in its entirety. a. Demolish existing brick veneer system and replace with metal panel system.

Consisting of a pre-finished, 18-gauge metal panels over 2 inches of R-6 rigid insulation. ASD maintenance preference is metal panels, installed horizontally. Metal panels in a thick gauge can add color and patterning choices while providing great durability in an elementary school setting.

A18. Architectural: Improve main entry and associated administration area to enhance

security. a. Provide secure entry vestibule with a visual connection and direct entry into the

administration suite.

A19. Architectural: Replace roof in its entirety. This is a necessary standard practice to perform mitigation item S5: structural and seismic improvements. a. Proposed roof assembly to consist of:

- 90 mill EPDM membrane, fully adhered - Substrate board fully adhered - Two layers of insulation fully adhered - An adherable top side self-adhered membrane - Thermal barrier as required - Existing structural deck


S5. Structural: Upgrades required to bring existing structure up to a Damage Control range target Building Performance Objective level (6.5) as defined by ASCE 41-06; reference Table 1 on page 17. a. Rehabilitate the connection of the diaphragms to the CMU walls throughout the

building: 1) Install a 4x4 at 4’-0” on center between the nailer and the first joist. 2) Connect a Simpson hold-down or tension tie to each 4x4 with an epoxy anchor

into the bond beam at the top of the CMU wall through the 4x4 on top of the ledger channel.

3) Install Simpson A34 or similar connectors to connect the 4x4 to the plywood diaphragm.

4) If necessary, add tension ties to a second 4x4 in the second joist space and connect it to the plywood diaphragm.

E12. Electrical: Seismic Bracing for Lighting Throughout. Provide seismic bracing of light

fixtures independently from ceiling support systems. Provide at least two support wires at opposite corners of the light fixture, and support from structure using listed devices and methods.

E13. Electrical: Seismic Bracing for Floor-mounted Switchboards. Provide lateral attachments to the building via steel angle brackets at the top of the switchboard.

E14. Electrical: Seismic Bracing for Generator Assembly. Provide seismic grade spring

isolators, steel seismic restraints at each corner (2 per corner) with neoprene pads, and seismic restraints for the battery system.

H2. HazMat: Mitigation for all Earthquake-Related Repair items and those listed above. Proper removal, disposal, and testing required.

Demolition and Site Clearing

Under this scenario, the existing school would be demolished in whole including all foundation systems, and the building would not be replaced.

Facility Replacement

Under this scenario, a new school facility would be constructed of equal square footage (58,086 SF), including site improvements on the existing school site.


7. CONSTRUCTION SCHEDULE SCENARIOS

Presumed Timelines for Design and Construction

The presumed Design and Construction Timeline for the following Eagle River Elementary School (ERES) Concept Scenarios is based on a traditional ‘Design/Bid/Build’ project delivery method following a Notice to Proceed (NTP) with design services and maintaining a vacated building for the construction phase. Alternative delivery methods could be pursued such as ‘Construction Management-at-Risk’, ‘Design-Build’ and ‘Design-Build Bridging’. These alternative methods may shorten the overall design/construction schedule by as much as 25% where the design/construction processes overlap, and depending on the complexity of the project scope. It should be noted that whichever project delivery method is chosen, there would be a selection process prior to the award of a contract. This Request for Proposal (RFP) process, from release of the RFP to issue of the Contract Award, generally takes up to four months working under FEMA regulations.

Concept Scenarios Designer

Procurement Design & Review Permitting

Contractor

Procurement Construction Total

Earthquake-Related Damage Repairs

4 months 3 months 1 month 3 months 5 months 16 months

Earthquake-Related Mitigation (earthquake-related damage repairs + seismic upgrade building improvements)

4 months 6 months 2 months 3 months 9 months 24 months

Demolition & Site Clearing

4 months 3 months 1 month 3 months 3 months 14 months

Facility Replacement 4 months 9 months 2 months 3 months 16 months 34 months


8. SUMMARY OF COSTS

Construction Costs

Construction cost estimates for the Eagle River Elementary School were performed by Estimations Inc. with some interpretation and extrapolation by BDS Architects. The cost estimates are based on a traditional Design-Bid-Build delivery method with a presumed bid date of Spring 2019. Pricing is also based on current material, equipment, freight costs, and A.S. Title 36 labor rates. The total estimated construction costs for each the Concept Solutions are as follows:

Proposed Improvements Construction Costs Project Costs

Earthquake Related Damage Repairs $3,331,598 $4,759,426

Earthquake-Related Mitigation (earthquake-related damage repairs + seismic upgrade building improvements)

$8,446,595 $12,066,564

Demolition and Site Clearing $2,904,300 $4,149,000

Facility Replacement, including demolition and site clearing

$24,396,120 $34,851,600

The construction estimate excludes costs associated with A/E design fees, administrative management costs and contingencies, furniture, furnishings and equipment (FF&E), as well as some other peripheral costs of completing the project. Construction is assumed to start in June of 2019; if construction starts later, there is an average escalation currently of 3.5% per year.

Cost Breakdown

An itemized breakdown of estimated costs associated with specific improvements to the facility are shown in Exhibit A - Cost Summary.


9. ATTACHMENTS

Attachments included are:

• Exhibit A o Cost Summary Matrix o Construction Cost Estimate

• Exhibit B - Drawings o A1: Floor Plan/Site Plan - Existing Conditions o A2: Floor Plan/Site Plan - Earthquake-Related Repairs o A3: Floor Plan/Site Plan - Earthquake-Related Mitigation

• Exhibit C - Photos of Existing Conditions

• Exhibit D – Post-Earthquake Structural Memorandum

EXHIBIT A: COST SUMMARY

Eagle River Elementary SchoolCost Summary Matrix

C. Demolition and

Site Clearing

D. Facility Replacement

including Demolition and

Site Clearing

Item Description Repair

Item

Cost Mitigation

Item

Cost Cost Cost

Repair Damaged Brick Veneer A1 $93,786

Paint Exterior Brick Veneer A2 $35,020

Replace Windows at 1984 Addition A3 $134,152 A3 $134,152

Epoxy Grout Exposed CMU Cracks A4 $45,246 A4 $45,246

Paint Interior CMU A5 $66,437 A5 $66,437

Repair GWB Cracks A6 $202,685 A6 $202,685

Replace Vinyl Flooring A7 $70,547 A7 $70,547

Adjust All Doors and Drawers A8 $16,411 A8 $16,411

Demolish/Replace Suspended Acoustical Ceilings A9 $151,169 A9 $151,169

Demolish/Replace Adhesive Applied Acoustical Ceiling Tiles A10 $152,366 A10 $152,366

Replace Glazing at Storefronts A11 $56,155 A11 $56,155

Demolish/Replace Cracked Ceramic Floor Tiles in Rm 64 A12 $5,452 A12 $5,452

Demolish/Replace Ceramic Tile Wainscot in Rm 64 and 66 A13 $8,125 A13 $8,125

Replace Athletic Flooring in Gym A14 $182,960 A14 $182,960

Demolish/Replace Acoustical Wall Treatment in Gym A15 $88,300 A15 $88,300

Adjust Door Closers A16 $7,339 A16 $7,339

Reattach North Wall of Gym S1 $16,736 S1 $16,736

Reattach South Wall of Gym S2 $21,671 S2 $21,671

Repair Vertical Cracks at CMU Vestibules S3 $23,624 S3 $23,624

Replace Dislodged Block Veneer at Gym S4 $33,242

Minor Heating Leaks M1 $5,670 M1 $5,670

Pressure Test Heating System M2 $131,728 M2 $131,728

Repair/Replace Sprinkler Heads M3 $12,778 M3 $12,778

Realign Diffusers in Library 61 and Rm 62 M4 $2,355 M4 $2,355

Replace Shroud on Ceiling Fans M5 $1,501 M5 $1,501

Replace Ductwork, Diffusers, Grilles M6 $82,377 M6 $82,377

Secure Diffusers in 1984 Addition M7 $7,645 M7 $7,645

Recommissioning M8 $268,047 M8 $268,047

Mechanical System Seismic Restraints M9 $23,706 M9 $23,706

Replace Damaged Light Fixtures E1 $57,678 E1 $57,678

Emergency Lighting E2 $5,175 E2 $5,175

Lighting Control Devices E3 $2,017 E3 $2,017

Fire Alarm System Testing and Repairs E4 $22,141 E4 $22,141

Intruder Alarm Security System Repairs E5 $8,991 E5 $8,991

Clock/Speaker Mounting Panels E6 $2,574 E6 $2,574

New Branch Conduit and Wiring E7 $1,086,891 E7 $1,086,891

Magnetic Door Holder E8 $361 E8 $361

Exterior Lighting Control System E9 $6,584 E9 $6,584

Replace Existing Wireway in Hall 500 E10 $1,578 E10 $1,578

Install 4th Vibration Isolator and Test Generator E11 $6,539 E11 $6,539

Hazardous Materials Abatement for All Repair Items H1 $183,839 H1 $183,839

Improve Main Entry Security Access C1 $98,846

Required Landscaping Improvements per Title 21 C2 $360,077

Replace Exterior Brick Veneer with Metal Panel A17 $409,298

Improve Main Entry and Admin Area to Enhance Security A18 $953,724

Replace Roof in its Entirety A19 $2,371,352

Damage Control Upgrades (level 6.5) per ASCE 41-06 S5 $186,647

Seismic Bracing for Lighting E12 $226,850

Seismic Bracing for Floor-Mounted Switchboards E13 $788

Seismic Bracing for Generator Assembly ` E14 $1,578

Hazardous Materials Abatement for All Mitigation Items H2 $505,837

$8,446,595

$145.42

$12,066,564 $4,149,000 $34,851,600

Total

Construction

Cost $3,331,598

$4,759,426

Total

Project Cost

Construction

Cost per SF

(58,086 SF

Facility) $50.00 $370.00$57.36

A. Earthquake-Related

Damage Repairs

B. Earthquake Damage

Mitigation Repairs

$2,904,300 $24,396,120

907.561.0790

PAR SUBMITTAL

EAGLE RIVER ELEMENTARY SCHOOLANCHORAGE SCHOOL DISTRICT

1225 E. International Airport Road, Suite 205Anchorage, Alaska 99518

CONSTRUCTION COST ESTIMATE

ANCHORAGE, ALASKA

Prepared for:

BDS ARCHITECTS3300 C Street, Suite 200

Anchorage, Alaska 99503907.562.6076

Prepared by:

Eagle River ES Earthquake Related Repairs PAR Estimate R5.xlsx / 3/1/19 / 10:16 AM Page 1

EAGLE RIVER ELEMENTARY SCHOOL March 1, 2019ANCHORAGE SCHOOL DISTRICTANCHORAGE, ALASKAPAR SUBMITTAL

DRAWINGS AND DOCUMENTS

Level of Documents: Program Analysis ReportDate: January 18, 2019Provided By: Bezek Durst Seiser, Inc.

RATES

Pricing is based on current material, equipment and freight costs.

Labor Rates: A.S. Title 36

BIDDING ASSUMPTIONS

Contract:Bidding Situation: Design-Bid-BuildBid Date: Spring 2019Start of Construction: Spring 2019

EXCLUDED COSTS

1. A/E design fees2. Administrative and management costs3. Furniture, furnishings and equipment (except those specifically included)

NOTES REGARDING THE PREPARATION OF THIS ESTIMATE



Total TOTALELEMENT Mat/Labor COST

EARTHQUAKE RELATED DAMAGE REPAIRS $ 3,331,598A1 Repair Damaged Brick Veneer $93,786 A2 Paint Exterior Brick Veneer $35,020 A3 Replace Windows at 1984 Addition $134,152 A4 Epoxy Grout Exposed CMU Cracks $45,246 A5 Paint Interior CMU $66,437 A6 Repair GWB Cracks $202,685 A7 Replace Vinyl Flooring $70,547 A8 Adjust All Doors and Drawers $16,411 A9 Demolish and Replace Suspended Acoustical Ceilings $151,169 A10 Demolish/Replace Adhesive Applied Acoustical Tiles $152,366 A11 Repair Glazing at Storefronts $56,155 A12 Demolish/Replace Cracked Ceramic Floor Tiles at Rm 64 $5,452 A13 Demolish/Replace Ceramic Tile Wainscot in Rm 64 $8,125 A14 Replace Athletic Flooring at Gym $182,960 A15 Demolish/Replace Acoustical Wall Treatment at Gym $88,300 A16 Adjust Door Closers $7,339 S1 Reattach North Wall of Gym $16,736 S2 Reattach South Wall of Gym $21,671 S3 Repair Vertical Cracks at CMU Vestibules $23,624 S4 Replace Dislodged Block Veneer at Gym $33,242 M1 Minor Heating Leaks $5,670 M2 Pressure Test Heating System $131,728 M3 Repair/Replace Sprinkler Heads $12,778 M4 Realign Diffusers in Library 61 and Rm 62 $2,355 M5 Replace Shroud on Ceiling Fans $1,501 M6 Replace Ductwork, Diffusers, Grilles $82,377 M7 Secure Diffusers in 1984 Bldg $7,645 M8 Recommissioning $268,047 M9 Review/Correct Seismic Holddowns $23,706 E1 Replace Light Fixtures Throughout $57,678 E2 Emergency Lighting $5,175 E3 Replace Damaged Occupancy Sensor Rm 30, 33, 27, 26A $2,017 E4 Address Fire Alarm Alarms $22,141 E5 Intruder Alarm Security System $8,991 E6 Remount Clock System $2,574 E7 Replace Wiring in 1961, 1962 Areas of Building $1,086,891 E8 Magnetic Door Holder, Reattach $361 E9 Exterior Light, South $6,584 E10 Replace Wireway at Hall 500 $1,578 E11 Generator, Test and Vibration Isolator $6,539 H1 Hazmat Related to Other Corrections $183,839



Total TOTALELEMENT Mat/Labor COST

EARTHQUAKE MITIGATION ITEMS $ 5,485,353C1 Improve Site Access $98,846 C2 Required Landscaping Improvement Per Title 21 $360,077 A17A Replace Brick Veneer with Similar System $370,346 A17B Replace Brick Veneer with Metal Panel System $409,298 A18 Improve Main Entry and Associated Admin Area $953,734 A19 Replace Roof $2,371,352 S5 Upgrade Existing Structure $186,647 E12 Seismic Bracing for Lighting $226,850 E13 Seismic Bracing for Switchboards $788 E14 Seismic Bracing for Generator Assembly $1,578 H2 Hazmat For Mitigation Items $505,837

DEMO AND SITE CLEARING $50/SF CONSTRUCTION COST X 1.3 = $65/SF PROJECT COSTThis assumes Hazmat is present.

REPLACEMENT SCHOOL $370/SF CONSTRUCTION COST X 1.3 = $481 PROJECT COSTBased on 2019 Costs.



LineUnit Matl/Labor

No. Description Qty UNITS $ $

12 EARTHQUAKE RELATED DAMAGE REPAIRS34 A1 Repair Damaged Brick Veneer 1,000 SF56 Demo Brick Veneer 1,000 SF $7.12 $7,120 7 Brick Veneer 1,000 SF $24.59 $24,590 8 New E.J. at Ext 1,116 LF $33.14 $36,984 9

10111213 General Requirements 12.0% $8,243.0014 Contractors Fee 6.0% $4,616.0015 Contingency 15.0% $12,233.001617 Subtotal: A1 Repair Damaged Brick Veneer $93,786 181920 A2 Paint Exterior Brick Veneer 9,000 SF2122 Prep/Pain Brick Veneer 9,000 SF $2.85 $25,650 23242526 General Requirements 12.0% $3,078.0027 Contractors Fee 6.0% $1,724.0028 Contingency 15.0% $4,568.002930 Subtotal: A2 Paint Exterior Brick Veneer $35,020 313233 A3 Replace Windows at 1984 Addition 1,040 SF3435 Demo Windows 1,040 SF $10.49 $10,910 36 Fiberglass Windows 1,040 SF $83.99 $87,350 373839404142 General Requirements 12.0% $11,791.0043 Contractors Fee 6.0% $6,603.0044 Contingency 15.0% $17,498.004546 Subtotal: A3 Replace Windows at 1984 Addition $134,152 474849 A4 Epoxy Grout Exposed CMU Cracks 1,000 LF5051 Clean and Router Cracks 1,000 LF $9.97 $9,970 52 Epoxy Filler 1,000 LF $23.17 $23,170 5354555657 General Requirements 12.0% $3,977.0058 Contractors Fee 6.0% $2,227.0059 Contingency 15.0% $5,902.006061 Subtotal: A4 Epoxy Grout Exposed CMU Cracks $45,246 62

Total Cost



LineUnit Matl/Labor


Total Cost

6364 A5 Paint Interior CMU 17,760 SF6566 Prep/Paint CMU 17,760 SF $2.74 $48,662 6768 General Requirements 12.0% $5,839.0069 Contractors Fee 6.0% $3,270.0070 Contingency 15.0% $8,666.007172 Subtotal: A5 Paint Interior CMU $66,437 737475 A6 Repair GWB Cracks 20,880 SF7677 Patch and Tape All GWB Surfaces 20,880 SF $5.25 $109,620 78 Paint 20,880 SF $1.86 $38,837 7980 General Requirements 12.0% $17,815.0081 Contractors Fee 6.0% $9,976.0082 Contingency 15.0% $26,437.008384 Subtotal: A6 Repair GWB Cracks $202,685 858687 A7 Replace Vinyl Flooring 5,500 SF8889 Corridors 400, 600 and MPR 3790 Demo Flooring 5,500 SF $1.37 $7,535 91 Vinyl Flooring 5,500 SF $7.68 $42,240 92 Base 680 LF $2.79 $1,897 939495 General Requirements 12.0% $6,201.0096 Contractors Fee 6.0% $3,472.0097 Contingency 15.0% $9,202.009899 Subtotal: A7 Replace Vinyl Flooring $70,547

100101102 A8 Adjust All Doors and Drawers 1 LS103104 Adjust All Doors 120 LV $87.42 $10,490 105 Adjust All Casework Doors 70 EA $21.85 $1,530 106107 General Requirements 12.0% $1,442.00108 Contractors Fee 6.0% $808.00109 Contingency 15.0% $2,141.00110111 Subtotal: A8 Adjust All Doors and Drawers $16,411 112113114 A9 Demolish and Replace Suspended Acoustical Ceilings 12,950 SF115116 Demo Ceilings 12,950 SF $1.50 $19,425 117 Suspended Ceiling System 12,950 SF $7.05 $91,298 118119 General Requirements 12.0% $13,287.00120 Contractors Fee 6.0% $7,441.00121 Contingency 15.0% $19,718.00122123 Subtotal: A9 Demolish and Replace Suspended Acoustical Ceilings $151,169 124



LineUnit Matl/Labor


Total Cost

125126 A10 Demolish/Replace Adhesive Applied Acoustical Tiles 20,000 SF127128 Demo Ceilings 20,000 SF $1.50 $30,000 129 Glue-on Tile 20,000 SF $4.08 $81,600 130131132133134 General Requirements 12.0% $13,392.00135 Contractors Fee 6.0% $7,500.00136 Contingency 15.0% $19,874.00137138 Subtotal: A10 Demolish/Replace Adhesive Applied Acoustical Tiles $152,366 139140141 A11 Repair Glazing at Storefronts 1,000 SF142143 Allowance 144 Demo Glazing 1,000 SF $4.54 $4,540 145 Replace Glazing 1,000 SF $36.59 $36,590 146147148149 General Requirements 12.0% $4,936.00150 Contractors Fee 6.0% $2,764.00151 Contingency and Escalation 15.0% $7,325.00152153 Subtotal: A11 Repair Glazing at Storefronts $56,155 154155156 A12 Demolish/Replace Cracked Ceramic Floor Tiles at Rm 64 166 SF157158 Demo Ceramic Floor Tile 166 SF $4.52 $749 159 Floor Prep 166 SF $3.30 $547 160 Ceramic Floor Tile 166 SF $16.28 $2,698 161162163164165 General Requirements 12.0% $479.00166 Contractors Fee 6.0% $268.00167 Contingency and Escalation 15.0% $711.00168169 Subtotal: A12 Demolish/Replace Cracked Ceramic Floor Tiles at Rm 64 $5,452 170171172 A13 Demolish/Replace Ceramic Tile Wainscot in Rm 64 224 SF173174 Demo Ceramic Wall Tile 224 SF $4.52 $1,012 175 Wall Prep 224 SF $5.77 $1,293 176 Ceramic Wall Tile 224 SF $16.28 $3,646 177178179180181 General Requirements 12.0% $714.00182 Contractors Fee 6.0% $400.00183 Contingency and Escalation 15.0% $1,060.00184 185 Subtotal: A13 Demolish/Replace Ceramic Tile Wainscot in Rm 64 $8,125 186



LineUnit Matl/Labor


Total Cost

187188 A14 Replace Athletic Flooring at Gym 4,368 SF189190 Demo Sports Flooring 4,368 SF $4.35 $19,001 191 Sports Flooring 4,368 SF $26.33 $115,009 192193194 General Requirements 12.0% $16,081.00195 Contractors Fee 6.0% $9,005.00196 Contingency and Escalation 15.0% $23,864.00197198 Subtotal: A14 Replace Athletic Flooring at Gym $182,960 199200201 A15 Demolish/Replace Acoustical Wall Treatment at Gym 1,632 SF202203 Estimated at 25% of Gym Walls204 Demo Acoustical Panels 1,632 LF $4.41 $7,197 205 Fabric Wrapped Acoustical Panels 1,632 LF $35.22 $57,479 206207208209 General Requirements 12.0% $7,761.00210 Contractors Fee 6.0% $4,346.00211 Contingency and Escalation 15.0% $11,517.00212213 Subtotal: A15 Demolish/Replace Acoustical Wall Treatment at Gym $88,300 214215216 A16 Adjust Door Closers 123 EA217218 Adjust Closers 123 EA $43.71 $5,376 219220221 General Requirements 12.0% $645.00222 Contractors Fee 6.0% $361.00223 Contingency and Escalation 15.0% $957.00224225 Subtotal: A16 Adjust Door Closers $7,339 226227228 S1 Reattach North Wall of Gym 55 LF229230 Demo Parapet 55 SF $17.48 $961 231 Demo Roofing 220 SF $5.44 $1,197 232 Demo Plywood Sheathing 220 SF $1.87 $411 233 Demo Nailer 55 LF $1.87 $103 234 New Nailer 55 LF $5.95 $327 235 4x4 60 LF $26.96 $1,618 236 Tension Ties 15 EA $41.85 $617 237 Drill In Epoxy A.B 15 EA $50.71 $748 238 Parapet 55 LF $61.71 $3,394 239 Roof Sheathing 220 SF $2.75 $605 240 Roofing Repairs 220 SF $10.35 $2,277 241242243 General Requirements 12.0% $1,471.00244 Contractors Fee 6.0% $824.00245 Contingency and Escalation 15.0% $2,183.00246247 Subtotal: S1 Reattach North Wall of Gym $16,736 248



LineUnit Matl/Labor


Total Cost

249250 S2 Reattach South Wall of Gym 55 LF251252 Demo Parapet 55 SF $17.48 $961 253 Demo Roofing 220 SF $5.44 $1,197 254 Demo Plywood Sheathing 220 SF $1.87 $411 255 Demo Nailer 55 LF $1.87 $103 256 Remove Replace Joist Hangers 28 EA $186.84 $5,232 257 New Nailer 55 LF $5.95 $327 258 Tension Ties 15 EA $41.85 $617 259 Drill In Epoxy A.B 15 EA $50.71 $