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`COFFMAN
ENGINEERS
December 20, 2021
Seimone Jurps, PE, CBO
Chief Building Official
City of Newport Beach
100 Civic Center Drive
Newport Beach, CA 92660
Project: Lido House Hotel — Temporary Rooftop Tent
Newport Beach, CA
CEI No. 201962:
Subject: Alternate Method Request — Temporary Rooftop Tent
In accordance with Section 104.11 of the 2019 California Building Code (CBC), this letter is formally
requesting approval of an alternate method of fire protection design associated with the Temporary
Rooftop Tent project at the Lido House Hotel located in Newport Beach, California.
PROJECT DESCRIPTION
The existing Lido House Hotel was designed as six buildings that surround an exterior pool deck and
event lawn. separated by a combination of vertical fire walls, horizontal building separations, and
imaginary lot lines between buildings on the same lot. On Level 1, the hotel includes a restaurant,
ballroom, fitness gym, spa, and back of house areas. Levels 2 through 4 are comprised mainly of guest
rooms with exception to the outdoor rooftop bar and lounge on Level 4.
The project proposes to utilize a tent structure to provide weather protection over a portion of the Level 4
rooftop lounge on a temporary basis.
APPLICABLE CODE SECT)
3102.1 General. The provisio
inflated, membrane -covered c
collectively known as membra
a shorter period of time shall c
storage facilities, water clarifiei
similar facilities not used for hu
3102.3.1 and 3102.7. Membrar
any period of time shall comply
?,ugh 3102.8 shall apply to air -supported, air-
frame and tensile membrane structures,
a period of 180 days or longer. Those erected for
sire Code. Membrane structures covering water
sewage treatment plants, greenhouses and
red to meet only the requirements of Sections
building, balcony, deck, or other structure for
3103.1 General. The provisions
period of less than days. Te )h 3103.4 shall apply to structures erected for a
period of less than 180 days shall comply with the cCalifornia Fire rures and eCode. Those erected fora longer period
of time shall comply with applicable sections of this code.
1401 Dove Street, Suite 250 1 Newport Beach, CA 92660
Phone 949.623.9987
www.coffman.com
ALTERNATE METHOD REQUEST — TEMPORARY ROOFTOP TENT
LIDO HOUSE HOTEL — NEWPORT BEACH, CA — CEI No. 210162
December 20, 2021
Page 2
PROPOSAL
This alternate method of design approach proposes that the rooftop structure be considered as a
temporary tent. In lieu of meeting the requirements of CBC Section 3102, Per CBC 3103.1, the temporary
tent would be required to comply with applicable CFC requirements.
The following conditions are proposed with this request:
1. The tent structure will comply with the applicable CFC requirements for temporary tents in Section
3103.
2. The tent structure will be temporary and used for a period less than 180 days in any 1-year period.
3. The tent fabric will be 25 Oz Vinyl Coat manufactured by Shelter Tent Manufacturing LTD that has
been tested and certified to equal or exceed the NFPA 701 and UL 214 standards.
4. The breezeway on the north end of the tent in front of the bar will be demarcated and provided with
signage to keep it clear of any furniture.
5. The ends of the breezeway at the tent wall will be maintained open.
- --- r • Yy Vauwp lent
JUSTIFICATION
The use and occupant load of the rooftop lounge will remain unchanged and can still be accommodated
by the building's means of egress system. The alternate design request proposes that the use of
temporary tent is more appropriately regulated by the California Fire Code Section 3103, but also
recognizes that certain measures need to be taken to safeguard the building that the tent resides on and
the occupants of the building on the Level 4 rooftop deck not within tent structure.
The proposed conditions included with this alternate design request are based on minimizing any impact
tent structure might have on the building and on occupants of the building not located within the tent itself.
www.coffman.com
ALTERNATE METHOD REQUEST — TEMPORARY ROOFTOP TENT
LIDO HOUSE HOTEL — NEWPORT BEACH, CA— CEI No. 210162
December 20, 2021
Page 3
The breezeway is intended to be maintained clear from furniture or any other items that may obstruct
egress or contribute to a combustible fire load. The breezeway serves as the main egress path from tent
and provides a second means for occupants on either side of the tent to egress to a second building exit.
To keep the breezeway clear, the breezeway egress path will be outlined with a contrasting color of paint
on the deck and provided with a sign on both ends indicating to keep the area clear. Refer to Sheet AT-
201 for details. To minimize the threat of fire to the building the tent fabric has been certified by the
California State Fire Marshal's office to meet the required flame resistance performance criteria in NFPA
701 and UL 214.
If you have any questions regarding this alternate design proposal, please do not hesitate to contact our office
Sincerely,
COFFMAN ENGINEERS, INC.
Jared Birmingham, PE
Sr. Discipline Manager - FPE
JJB:jb
20211220—Lido Temp Tent —AMR
Enclosure
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