03/25/2014 Ordinances 9481 ORDINANCE NO. 9481
An ordinance to amend Chapter 8 of the Grand Island City Code; to amend
Section 8-14 to add 1805.4 (5); to repeal Section 8-14 as now existing, and any ordinance or
parts of ordinances in conflict herewith; and to provide for publication and the effective date of
this ordinance.
BE IT ORDAINED BY THE MAYOR AND COUNCIL OF THE CITY OF
GRAND ISLAND, NEBRASKA:
SECTION 1. Section 8-14 of the Grand Island City Code is hereby amended to read as
follows:
Article I. General
Division 1. International Building Code
§8-14.IBC—Amendment of Section 1805 and IRC-Amendment of R406
Section 1805 of the International Building Code and Section R406 of the International Residential Code is hereby
amended by adding thereto the following:
1805.2.2 & 1805.2.2.1 Walls. & Surface preparation of walls, and R406, R406.2, subsurface drainage system shall
be included as an alternative to waterproofing.Add Backplaster and Dampproofing
Exterior foundation walls below grade of any building consisting of masonry units having a basement shall be
backplastered with one-half inch (1/2") Portland cement and sand mix (1:2 1/2 by volume) or two one-fourth
inch(1/4") coats of Type M mortar,and with an approved dampproofing material. Poured concrete foundations
shall be coated with dampproofing without back plaster. Alternative dampproofing may be approved by the
building official.
1805.4 Delete existing and add Subsurface Drainage Systems
All buildings constructed with basements or floor levels twenty-four(24) inches or more below the elevation of
the center line of the adjacent public street shall be provided with a subsurface drainage system. A subsurface
drainage system shall consist of the minimum following elements:
(1) Minimum four (4") diameter perforated or scored drain pipe embedded in four inches (4") of coarse
gravel installed around the inside of the perimeter footing such that no floor location is greater than ten feet
(10')to such drain pipe.
(2) Minimum fifteen inch (15") diameter by thirty inch (30") deep sump pump pit for each one thousand
five hundred(1,500)square feet of floor area to be drained.
(3) Minimum two inch (2") diameter weep holes through the footing at eight foot (8') on center intervals
with a minimum of four inch(4")of gravel cover on the exterior of the footing.
(4)Minimum four inch(4")gravel bed under floor slab.
(5). A 3"minimum diameter pipe shall be installed through the floors and into the attic, capped and sealed
to facilitate a future soil gas ventilation system.
Amended by Ordinance No.8955,effective 3-31-2005
Amended by Ordinance No.9162,effective 05-01-2008
Amended by Ordinance No.9365,effective 03-30-2012
Approved as to Formri�
March 24,2014 II !.rney
ORDINANCE NO. 9481 (Cont.)
SECTION 2. Section 8-14 as now existing, and any ordinances or parts of
ordinances in conflict herewith are repealed.
SECTION 3. The validity of any section, subsection, sentence, clause, or phrase
of this ordinance shall not affect the validity or enforceability of any other section, subsection,
sentence, clause, or phrase thereof
SECTION 4. That this ordinance shall be in force and take effect April 15, 2014
and shall be published within fifteen days in one issue of the Grand Island Independent as
provided by law.
Enacted: March 25, 2014.
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c . L_
a svrice , Mayor
Attest:
P ,
RaNae Edwards, City Clerk
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