A06_ATT_2_140P8423Q0054_Construction_Drawings_CRLA_Stairway_Rehabilitation_FY23.pdf

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SHEET INDEX

DESCRIPTIONSHEET

G1 TITLE SHEET

WHERE PUBLIC UTILITY FIXTURES OR FACILITIES ARE SHOWN AS EXISTING ON

THE PLANS OR ENCOUNTERED WITHIN THE CONSTRUCTION AREA, IT SHALL BE

THE RESPONSIBILITY OF THE CONTRACTOR TO NOTIFY THE OWNERS OF THESE

UTILITIES PRIOR TO THE BEGINNING OF ANY CONSTRUCTION INVOLVING

EXCAVATION. THE CONTRACTOR SHALL AFFORD ACCESS TO THESE FACILITIES

FOR NECESSARY MODIFICATION OF SERVICES OR RELOCATION. UNDERGROUND

FACILITIES, STRUCTURES AND UTILITIES HAVE BEEN PLOTTED FROM AVAILABLE

SURVEYS, RECORDS AND UTILITY OPERATOR LOCATION MARKINGS; THEREFORE

THEIR LOCATIONS MUST BE CONSIDERED APPROXIMATE ONLY. TYPE, SIZE AND

GENERAL LOCATION OF THE FACILITIES WERE REQUESTED OF THE OPERATORS

AND SHOWN ON THE PLANS, AND IF NECESSARY, UPDATED WITHIN 90 DAYS OF

COMPLETION OF THE FINAL PLANS. IT IS POSSIBLE THERE MAY BE OTHERS, THE

EXISTENCE OF WHICH IS PRESENTLY NOT KNOWN OR SHOWN. IT IS THE

CONTRACTOR'S RESPONSIBILITY TO DETERMINE THEIR EXISTENCE AND EXACT

LOCATION AND TO AVOID DAMAGE THERETO. NO CLAIMS FOR ADDITIONAL

COMPENSATION WILL BE ALLOWED TO THE CONTRACTOR FOR ANY

INTERFERENCE OR DELAY CAUSED BY THE WORK.

G2 GENERAL PROJECT INFORMATION

A1 GENERAL PLAN

A2 REFERENCE PHOTOS

PROJECT LOCATION

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AutoCAD SHX Text FILE PATH: C:\Users\nwanderson\OneDrive - DOI\CRLA\CRLA 317245 Rat Hall Stairs\Drawings\CRLA 317245.dwg LAST SAVE: 4/3/2023 11:09 AM SAVED BY: NWANDERSON PLOT DATE: 4/3/2023 11:10 AMC:\Users\nwanderson\OneDrive - DOI\CRLA\CRLA 317245 Rat Hall Stairs\Drawings\CRLA 317245.dwg LAST SAVE: 4/3/2023 11:09 AM SAVED BY: NWANDERSON PLOT DATE: 4/3/2023 11:10 AM LAST SAVE: 4/3/2023 11:09 AM SAVED BY: NWANDERSON PLOT DATE: 4/3/2023 11:10 AM4/3/2023 11:09 AM SAVED BY: NWANDERSON PLOT DATE: 4/3/2023 11:10 AM SAVED BY: NWANDERSON PLOT DATE: 4/3/2023 11:10 AMNWANDERSON PLOT DATE: 4/3/2023 11:10 AM PLOT DATE: 4/3/2023 11:10 AM4/3/2023 11:10 AM

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BUILDING 5 STAIRWAY REHABILITATION

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SCALE OF MILES

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CRATER LAKE NATIONAL PARK

AutoCAD SHX Text U.S DEPARTMENT OF THE INTERIOR NATIONAL PARK SERVICE PACIFIC WEST REGION KLAMATH COUNTY, OREGON

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LAKE

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STATION

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CASTLE

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ENTRANCE

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SPRING

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ANNIE

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CREEK

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TO FORT KLAMATH

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SOUTH ENTRANCE

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PINNACLES

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THE

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CREEK

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ANNIE

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CREEK

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STEEL

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VILLAGE

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MAZAMA

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HQ.

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VILLAGE

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RIM

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WHEELER

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ONE WAY

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SUN

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LODGE

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OVERLOOK

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PINNACLES

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CREEK

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CREEK

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CREEK

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LOST

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SAND

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CREEK

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TO UNION

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TO

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CRATER LAKE

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CRATER

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MT. SCOTT

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AND DIAMOND LAKE

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ENTRANCE

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STATION

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NORTH

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CALIFORNIA

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OREGON

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FALLS

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KLAMATH

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MEDFORD

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UPPER KLAMATH LAKE

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NATIONAL PARK

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ROSEBURG

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CREEK

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UNION

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CRATER LAKE

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FORT KLAMATH

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DIAMOND LAKE

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DETAILED LOCATION MAP

BUILDING 5

PROJECT AREA

MAINTENANCE BUILDING

HEADQUARTERS

BUILDING

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MUNSON VALLEY RD

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BUILDING 5

REMOVE & PLACE EXTERIOR

STAIRS AND RAILINGS

NOTES

1. THE OVERALL OBJECTIVE IS TO REMOVE AND REPLACE THE EXISTING WOODED STAIRS WITH AN IN-KIND REPLACEMENT.

WITH THE EXCEPTION OF THE STAIR TREADS, MATCH EXISTING MEMBER DIMENSIONS, LAYOUT, AND CONFIGURATION.

PRIOR TO REMOVAL, DOCUMENT EXISTING DIMENSIONS AS REQUIRED TO ENABLE MATCH.

2. EXISTING STAIRS ARE BRACED WITH TEMPORARY BRACING (NOT SHOWN). REMOVE BRACING WITH CAUTION AS STAIRS

MAY BE UNSUPPORTED WITH BRACING REMOVED.

3. CONSTRUCT STAIRS USING STANDARD TREATED DIMENSIONAL LUMBER. IT IS NOT THE INTENT OF THIS PROJECT TO USE CUSTOM SAWN LUMBER. MINOR DIMENSIONAL ADJUSTMENTS WILL BE ALLOWED TO ALLOW FOR THE USE OF STANDARD

LUMBER SIZES.

4. FURNISH AND INSTALL NEW AND LARGER SUPPORT BRACKETS WHERE ONLY ANGLE IRON WAS PREVIOUSLY USED.

5. NEW STAIR TREADS AND UPPER LANDING DECK SHALL BE CONSTRUCTED USING 2X LUMBER.

6. RECONFIGURE THE STAIR TREADS SO THAT THE STEP HEIGHT IS CONSISTENT. STEP HEIGHT MAY VARY FROM 7 14" TO 7 34".

(EXISTING TREAD CONFIGURATION WILL NOT WORK DUE TO EXISTING STEP THICKNESS.)

7. WHERE WOOD IS IN CONTACT WITH STONE MASONRY, GROUT OR SEAL (CAULK) INTERFACE TO PROTECT FROM WATER

INTRUSION WHILE STILL ALLOWING TO DRAIN.

8. PAINT TO MATCH EXISTING COLOR.

ELECTRICAL AND OPERATIONAL NOTES

1. FURNISH AND INSTALL ONE OR TWO GFCI ELECTRICAL OUTLETS TO SUPPLY ELECTRICITY TO THE STAIR MELT-MATS.

2. MOUNT ELECTRICAL OUTLET TO BOTTOM OF LANDING TO PROTECT FROM SNOW. PROVIDE OUTLETS WITH AN EXTRA-DUTY

WHILE-IN-USE WEATHERPROOF COVER (LEVITON OR EQUAL). LID MUST BE ABLE TO REMAIN CLOSED WITH FACING DOWN.

3. SIZE THE CIRCUITS TO HANDLE 2X THE TOTAL MELT-MAT LOAD.

4. FURNISH AND INSTALL SNOW SENSOR CONTROLLER.

5. ELECTRICAL CIRCUIT MUST BE CONFIGURED SO THE SYSTEM AUTOMATICALLY DETECTS SNOW CONDITIONS AND TURNS THE MATS

ON. SYSTEM MUST AUTOMATICALLY TURN OFF AFTER A PRESET AMOUNT OF TIME, OR WHEN THE SENSOR DETERMINES THAT

SNOW CONDITIONS ARE NO LONGER PRESENT.

6. THE SYSTEM MUST BE INSTALLED WITH A MANUAL TIMER SWITCH WHERE PARK STAFF CAN FORCE THE MATS TO TURN ON IN THE EVENT OF EXTREME SNOW. TIMER SWITCH MUST ALLOW FOR OPERATION RANGING FROM ONE TO FOUR HOURS.

7. CONTRACT SHALL INITIALLY PLACE THE MELT MATS AND DEMONSTRATE SYSTEM FUNCTIONALITY. THE MELT-MAT CONFIGURATION MAY VARY, BUT THE CONTRACTOR SHALL BE RESPONSIBLE FOR FURNISHING ALL CABLE EXTENSIONS AND MISCELLANEOUS

COMPONENTS FOR A COMPLETE AND OPERATIONAL SYSTEM.

FURNISH HEATED STAIR MAT FOR

EACH TREAD, PLUS FOUR SPARE MATS.

MATS SHALL BE HEATTRAK PRO OR EQUAL (11"X3').

FURNISH HEATED STAIR WALKWAY MAT FOR

MAT SHALL BE HEATTRAK PRO OR EQUAL.

(4'X6')

REMOVE EXISTING STAIR

MELT CONTROLLER

NEW TEMPERATURE/MOISTURE SENSOR

(LOCATE ACCORDING TO MANUFACTURER)

EXISTING ELECTRICAL P PANEL

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GFCI

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REMOVE & REPLACE EXISTING

WOODEN STAIRS, RAILINGS, POSTS,

BEAMS, ETC.

REMOVE ELECTRICAL SYSTEM

REMOVE , SALVAGE, AND

REINSTALL LIGHT

STEEL BRACKET (TYP)

MAY BE SALVAGED AND REUSED

IF FOUND TO BE IN ADEQUATE CONDITION

REMOVE STAIR HEAT SYSTEM

ELECTRICAL CIRCUIT

FROM BUILDING

NOTE TIE-ROD

NOTE POST-BASE ATTACHMENTS

PROTECT EXISTING UTILITIES

PROTECT SPRINKLER

EXISTING TREADS ARE PRECAST

WITH EMBEDDED MELT CABLES.

DISCONNECT AND SALVAGE TO NPS.

VISIBLE MEMBER FAILURE

REPLACE WITH LARGER

L BRACKET

ADD ADDITIONAL STEEL L BRACKET

UNDER BEAM (BOTH SIDES)

RECONFIGURE STAIRS. ATTACH TREADS

USING EXISTING L-BRACKETS OR FABRICATED ANGLES

USE LARGER BACKING PLATE,

SIMILAR TO OTHER SIDE

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FILE PATH: C:\Users\nwanderson\OneDrive - DOI\CRLA\CRLA 317245 Rat Hall Stairs\Drawings\CRLA 317245.dwg LAST SAVE: 4/3/2023 11:09 AM SAVED BY: NWANDERSON PLOT DATE: 4/3/2023 11:11 AMC:\Users\nwanderson\OneDrive - DOI\CRLA\CRLA 317245 Rat Hall Stairs\Drawings\CRLA 317245.dwg LAST SAVE: 4/3/2023 11:09 AM SAVED BY: NWANDERSON PLOT DATE: 4/3/2023 11:11 AM LAST SAVE: 4/3/2023 11:09 AM SAVED BY: NWANDERSON PLOT DATE: 4/3/2023 11:11 AM4/3/2023 11:09 AM SAVED BY: NWANDERSON PLOT DATE: 4/3/2023 11:11 AM SAVED BY: NWANDERSON PLOT DATE: 4/3/2023 11:11 AMNWANDERSON PLOT DATE: 4/3/2023 11:11 AM PLOT DATE: 4/3/2023 11:11 AM4/3/2023 11:11 AM