Ordinance No. 484 - Building CodeORDINANCE N0. 484
An ordinance amending the Building Code relating to grading,
location of buildings and swiimting pools in relation to slopes, flood
hazards and geologic hazards.
The City Council of the City of ROSEMEAD does
ordain as follows:
SECTION 1. Section 104(i) of the Building Code, adopted
February 22; 1978. is amended by adding a paragraph to read:
Drainage structures, devices or systems required by Chapter 70,
"Excavation and Grading," shall be maintained in a manner that will
insure their effectiveness.
SECTION 2. Section 301(d) of said Building Code is amended by
• adding a paragraph to read:
Where proposed construction will affect site drainage, existing
and proposed drainage patterns shall be shown on the plot plan.
SECTION 3. Section 304(a) of said Building Code is amzndzd by
adding a paragraph to read:
Prior to plan check of building plans for lots or parcels in areas
having slopes of five horizontal to one vertical (5:1) or steeper, a
site inspection shall be made. The fee for such inspection shall be as
• set forth in Section 303(f). The Building Official may waive this
inspection and fee when he determines that the nature of the work does
not require preinspection of the building site. Such a preinspection
shall not be required for a building pad graded under the provisions
of Chapter 70.
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SECTION 4. Section 308(x) of said Building Code is amended by
adding a sentence after the third sentence to read:
The placement of the building and other structures (including walls
and fences) on the building site shall be such that water or mud flow
will not be a hazard to the building or adjacent property.
SECTION 5. Section 308(b) of said Building Code is amended by
amending Subdivision 2 to read:
2. Work requiring a building or grading permit by this code is
not permitted in an area determined by the County Engineer to be subject
to hazard from landslide, settlement, or slippage. These hazards include
those from loose debris, slopewash and the potential for mud flows from
natural slopes or graded slopes. For the purpose of this section,
landslide, settlement or slippage does not include surface displacement
• due to the earthquake faults.
SECTION 6. Section 308(b) of said Building Code is amended by
adding Paragraph "h" to Subdivision 3 to read:
(h) A'otwithstanding any other provisions of this subsection, the
County Engineer may, at his discretion, deny a permit for any building,
structure or grading subject to a hazard of a geological nature which
cannot be mitigated and may endanger the health or saYety of the
occupants, adjoining property or the public.
SECTION 7. Section 7005(b) of said Building Code is amended by
adding paragraph ntmmber 13 to read:
13. A drainage plan for that. portion of a lot or parcel to be
utilized as a building site (building pad) including elevations of
floors with respect to finish site grade and locations of proposed
stoops, slabs and fences that may affect drainage.
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SECTION 8. Section 7005 of said Building Code is amended by
adding Subsection (g) to read:
(g) Preplan Check Site Inspection. Prior to plan check of
grading plans, a site inspection shall be made. The fee for such
inspection shall be as set forth in Section 303(f).
The Building-Official may waive this inspection and fee when he
determines that the nature of the work does not require preinspection
of the site.
SECTION 9. Section 7010(a) of said Building Code is amended
by deleting Exception 1, by renumbering Exceptions 2 and 3 to be 1 and 2
respectively and by adding a paragraph to read:
(a) Compaction. All fills shall be compacted throughout their
full extent to a minimum of 90 percent of maximum density as determined
• by A.S.T.M. Soil Compaction Test D1557.70. Field density shall .be
determined by a method acceptable to the Building Official.
Fill slopes in excess of a 2:1 steepness ratio are to be con-
structed by the placement of soil a sufficient distance beyon3 the
proposed finish slope to allow compaction equipment to operate at the
outer surface limits of the final slope surface. The excess fill is to
be removed prior to completion of rough grading. Other construction
procedures may be utilized when it is first shown to the satisfaction of
the County Engineer that the angle of slope, construction method and
other factors will accomplish the intent of this section.
1. Fills not intended to support structures need not be
compacted to these standards if the Euilding Official determines that
such compaction is unnecessary as a safety measure. In making this
determination, the Building Official may require that an investigation
be made by a soils engineer to establish the characteristics of the
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soil, the amount of settlement to be expected, and the susceptibility
of the soil to erosion or slippage.
2. Slope surfaces may be prepared for planting by scarifying,
by the addition of top soil, or by other methods provided such slopes
when so prepared otherwise comply with the requirements of this section.
SECTION 10. Section 7010(g) of said Building Code is amended
to read:
(g) Inspection and Testing. The soil engineer shall provide
sufficient inspection during fill placement and compaction operations to
determine that such work is being performed in accordance with the
conditions of plan approval and requirements of this_Code. Continuous
inspection shall be provided by the soil engineer or his responsible
representative for all fills that will exceed a vertical height or depth
of 30 feet or result in a slope surface steeper than two horizontal to
one vertical.
Tests to determine density of the compacted fill soils shall be
made on the basis of not less than one test for each 2-foot vertical
lift of the fill but not less than one test for each 1000 cubic yards of
material placed. At least one-half of the required tests shall be made
at the location of the final fill slope, except that not more than one
such test need be made for each 50 horizontal feet of slope in each
2-foot vertical lift. Additional tests shall be performed where deemed
• necessary by the soils engineer or the Building Official. All such
density tests shall be reasonably uniformly distributed within the fill
or fill slope surface. Results of such testing and location of tests
shall be presented in the soil engineer's report.
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Sufficient tests of soil properties, including soil types and
shear strength, shall be made during grading operations to verify
compliance with design criteria. The results of such testing shall
be furnished to the Building Official upon the completion of grading
operations or when necessitated by varying field conditions upon
request by the Building Official.
SECTION 11. Section 7011 of said Building Code is amended by
adding the following paragraphs to read:
Swiaming pools shall be set back from slopes as required by
Figure 70-A for buildings subject to the followir~e provisions:
1. The minimum setback distance from the bottom of any
slope shall be that applicable to slopes not steeper
than 2:1.
• 2. At the tops of cut or fill slopes, setbacks shall be
governed by dimension "e" which shall be measured from
the soil side of the pool structure. That portion of
the pool structure extending above the level of measure-
ment or within seven feet of the slope face shall be
capable of supporting the water in the pool.
Buildings shall beset back from natural slopes which exceed 2:1
according to the cut slope setback provisions of Figure 70-A and the
• requirements of Figure 70-A-1.
SECTION 12. Section 7012(c) of said Building Code is amended
by adding the following sentence to read:
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The grading shall provide for drainage around proposed buildings
and their app~tenances.
SECTION 13. Section 7012(e) of said Building Code is amended
to read:
(e) Overflow Protection. Berms, swales or other devices shall
be provided at the top of cut or fill slopes to prevent surface waters
from overflowing onto and damaging the .face of the slope. Gutters or
other special drainage controls shall be provided where the proximity
of nnloff from buildings or other structures is such as to pose a
• potential hazard to slope integrity.
SECTION 14. Section 7013(x) of said Building Code is amended
by adding a paragraph to read:
Plant material shall be selected which will produce a coverage of
permanent planting effectively controlling erosion. Consideration shall
be given to deep-rooted plant material needing limited watering; ,to low
maintenance during the lifetime of the project; to high root to shoot
ratio (weight of above ground parts versus root system), wind suscepti-
• bility and fire retardant characteristics.
SECTION 15. Subsections (a) and (b) of Section 7014 of said
Building Code are amended to read:
(a) General. All grading involving a fill intended to support
structures, or the development of more than one lot or parcel of land,
or in excess of 5,000 cubic yards of material, or grading where the
Building Official determines special conditions or unusual hazards
exist shall be performed under the supervision of a civil engineer
and shall comply with Subsection (c) titled, "Supervised Grading
Requirements".
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(b) Inspection of Excavation and Fills. The permittee or his
agent shall notify the Building Official a minim~n of 24 hours before
the grading operation is r-a~-y for each of the following inspections:
1. Initial Inspection: When the permittee is ready to begin
work, but before ary grading or brushing is started.
2. Toe Inspection: After the natural ground is exposed and
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prepared to receive fill, but before any fill is placed.
3. Excavation Inspection: After the excavation emplacement is
started, but before the vertical depth of the excavation exceed ten feet
4. Fill Inspection: After the fill emplacement is started, but
before the vertical height of the lifts exceed ten feet.
5. Drainage Device Inspection
After forms and pipe are in place,
but before any concrete is placed.
6. Rough Grading: When all rough grading has been completed.
7. Final: When all work, including installation of all drainage
structures and other protective devices, has been completed and the
asgraded plan and required reports have been submitted.
The pezmittee need not wait for the inspector to arrive before
•
proceeding with the work.
The Building Official shall approve the work inspected or shall
notify the permittee or his agent wherein it fails to comply with the
requirements of this Code.
In addition to the called inspections specified above, the Building
Official may make such other inspections as he may deem necessary to
determine that the work is being performed in compliance with the
requirements of this Code. Investigations and reports by an approved
soil testing agency and/or geologist may be required.
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SECTION 16. Subsection (c) of Section 7014 of said Butilding
Code is amended by adding the following-paragraph.
In addition to the above, the grading contractor sha1L submit a
statement in writing that the work under his direction was performed in
accordance with the approved plans and requirements of this code or
wherein such work was not in accordance with such plans and code.
SECTION 17. Chapter 70 of said Building Code is amended by
amending Figure No. 70-A "Required Setbacks" to be as shoran in this
ordinance.
. SECTION 18. Section 7009(a) of. said Building Code is amended.
by adding a sentence after the first sentence to read: .
Substantiating calculations and supporting data may be required
where the Building Official determines that such information is necessary
to verify the stability and safety of the proposed slope.
PASSED, APPROVED AND ADOPTED this 26th day of December
1978. ,
AYES: Councilmen Hunter, Cichy, Imperial, Tury & Taylor
NAYES: None
• ABSENT: None
~ ABSTAIN: None
~i~~
MAYOR.
ATTEST:
City Cl rk `~
-8-
SLi~~1~RY
CFIANGES 'IO GRAllIL'G REQt1IRENlCNPS
BUILllING CODE
FollowLng is a su~lmary of the changes to the Building Code:
SeCtlOn 1. SeCti.On 104(1). EXLStlrig BLL1d1.11gS
An>Ends the maintenance requirements for ex.i_sting btlildi.ngs to i.ncl.ude
maintenance of building site drains and other drainage systems required
by Chapter 70.
Section 2. Section 301(4). Building Plans
Where proposed construction will ai-fect site drainage, existing and
proposed drainage pattern must be shotian on plot plan.
Section 3. Section 304(a). Inspections
Requires a preconstructi.on inspection of proposed building sites in
hilly areas prior to plan check.. This inspection is to establish the
safety of the site and building location as setfortl~~ in Section 308(x)
and (h) .
Section ~+. Section 308(a). F7.ocd Hazards
Adds to the subsection on "}food Hazards" a requirement that btlildings
and stnzctures shall. be located such that water or ilzud flows will not ba
a hazard to the building or. adjacent property:
Section 5. Section 308(b). Ceologi.c Hazards
• Extends the defin:i.tion of "Geologic Hazards" to include those from loose
debris, slopecaash and potential. for mud flows.
Section 6. Section 308(b). Geologic hazards
Al.l aas the County F'ngineer. the discretion to deny a permit in an area
subject to geologic hazard.
Section 7. Section 7005(b)13. Grading Plans
Requires tlklt buil.dirg site drainage plan include floor elevation w.itn
respr~ct to finish grade and location of stoops, slabs and fences.
Section 8. Section 7005(8). Pre-Plan Checlc Site lnspecticn
Redsi.res site in::pect:i_on prior to pi.an chc-ck of grading plans unless
waived by Bui.l.ding Off_ir_i.al_.
..,
-action 9. Sec .ion 7010(x?. Compaction.
-.-_ _uires a 90~ co-paction to the surface ~P ._... f.il.l. stax and =stablishos;
prccedures for the construction of fi.ll..slopes with stn.=.p.^,ess greater
than 2:1. -
ect.ion 10. Section 70].0 (g) . l:nspecti.cn and 4estir.g.
.~;res that one-half of. the tests made during the construction of a
:__.. r: made at the 1ccaL'i.on of the f..i.na1 fi.11 slooc. Also allora additional
__sts c; be required. Re?uires tests to verify compliance with design
criteria.
_ect.ion 11: Section 7011. Slope Location and Setbacks.
'_+.tends setbac}: requirements to swimming pools and natural slopes ~•:hich
_xceed 2:1. '
Section 12. Section 701?.(c). Drainage.
-.e_uires that grading provide for drainage around buildings and their
:.ourtenances.
=~~*_ion 13. Section 7012(e). Overflow Protection.
3ecuires roof gutters when roof runoff poses a potential hazard to slope
integrity.
section 14. Section 7013. Planting of Slopes.
stablishes criteria for the selection of slope plants.
=ction 15. Section 7014 (a) and (b). Inspection of Excavations and Fills.
a=_blishes nee: inspection requirements for Cot!rty inspection of excavation
=-.,. fills. -
~_ction 16. Section 7614 (c). Supervised 8radin g.
.._?:!ires statement from the grading contractor at completicn of the crork.
_ection 1.7. Table No. 70-~+. Required Setbacks.
_..-_= required setbacks for buildings from the top and bo*_tom of slopes
_,.... beets modified. Setbacks are established for natural slopes.
action lII. Section 7009(x). Excavat.i.ons.
ilding Official may require calculations and supporting data regardi.rr
==ability of slope.
5....-rba 53
_-~9-7s