(a)
For
proposed subdivision plat.
(1)
Run
the 25-year ultimate development runoff discharge through area with
existing "n" values of drain.
(2)
Compare
the 25-year water surface elevation profile against the federal agency
100-year profile; whichever is higher controls.
(3)
If
a federal agency 100-year profile is not available, use the U.S. Geological
Survey Chart (100-year frequency discharge vs. drainage area, existing
conditions) to establish the runoff for the local area and compare
with the 25-year values; if 100-year values are greater, use for hydraulic
calculations.
(4)
With
the existing floodplain established for water surface elevations,
run frictional depths in the channel opposite the proposed subdivision
for existing conditions, using Qs available.
(5)
If
floodplain water surface profiles are available for 100-year Qs, superimpose
the 100-year water surface elevation in the existing section and calculate
existing AR-2/3 value furnished.
(6)
Any
fill encroachment proposed in this section must furnish the same AR-2/3
value as the existing section and be solved for a depth delta hv below
the original (existing) frictional depth line.
(7)
Run
a backwater curve on proposed finished fill contours to verify that
the water surface elevation did not rise due to fill encroachment.
(b)
For
proposed building in existing officially designated FEMA or U.S. Corps
of Engineers flood-prone areas.
(1)
If
a federal agency water surface profile is available for the 100-year
frequency discharge, superimpose the 100-year water elevation in the
existing section and calculate existing AR-2/3 value furnished.
(2)
Superimpose
the proposed building into the floodplain section to see if the remaining
AR-2/3 value will be equal to the existing value furnished at a depth
delta hv below the existing water surface elevation. If so, OK; if
not, additional AR-2/3 value will have to be furnished or building
cannot be approved for construction.
(3)
If
a federal agency 100-year frequency water surface profile is not available,
use U.S. Geological Survey Chart (100-year frequency discharge vs.
drainage area, existing conditions) to calculate runoff and run backwater
profile and frictional depths through the proposed building site.
(4)
Make
frictional depth checks with the proposed building superimposed into
the existing section and furnish the same AR-2/3 value as the existing
section a depth delta hv down from the original water surface elevation.
(5)
If
the water surface profile had to be established, run a backwater curve
through the proposed section with the building to verify that there
is not rise in the existing water surface elevations.
(c)
For
subdivisions.
Proposed plats will be checked for the
25-year water surface elevations plus freeboard, and the 100-year
water surface elevations without freeboard, whichever is higher will
control. Land to be built on will be filled to these controlling elevations.
(1965 Code, app. B, attach. A)
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(1965 Code, app. B, attach. B)
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PERFORMANCE BOND
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STATE OF TEXAS
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( )
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( )
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COUNTY OF __________
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( )
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KNOW ALL MEN BY THESE PRESENTS;
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That we, __________, the undersigned developer as principal,
and __________, as surety, do hereby acknowledge ourselves to be held
and firmly bound unto the City of Alamo Heights, a municipal corporation
of the County of Bexar and State of Texas, in the full and just sum
of $_____, for the payment of which will and truly to be made, we
hereby bind ourselves and our respective heirs, administrators, executors
and assigns jointly and severally, firmly by these presents.
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WHEREAS, the principal had petitioned the Floodplain Administrator
of the City of Alamo Heights for permission to _____within the jurisdiction
of the City of Alamo Heights which is shown on plans entitled __________,
and which is more particularly described as follows, TO WIT:
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WHEREAS, said plans and a Floodplain Development Permit for
said development were approved by the Floodplain Administrator; and
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WHEREAS, the Floodplain Ordinance of the City of Alamo Heights
requires that the site improvements set out below be completed by
the principal in conformance with the standards established by said
ordinance within three (3) years from the date on which the Floodplain
Development Permit was approved:
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__________
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__________
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__________; and
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WHEREAS, the aforesaid ordinance requires a Guarantee of Performance
that such site improvements will have been completed and will have
been accepted by the City within three (3) years of the date on which
the Floodplain Development Permit was approved; and
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WHEREAS, the undersigned Developer has elected to provide to
the City of Alamo Heights such a Guarantee of Performance;
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NOW THEREFORE, the condition of this obligation is such that
if the principal shall, on or before the _____ day of _____, 19_____,
construct or cause to be constructed the above-mentioned improvements
in accordance with the requirement of the City of Alamo Heights Floodplain
Ordinance, then this obligation shall be void; otherwise, the obligations
under this bond shall remain in full force and effect.
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IN TESTIMONY WHEREOF, WITNESS OUR HAND AND SEAL this __________
day of __________, A.D., 19_____.
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DEVELOPER AND PRINCIPAL
BY: ________________________
TITLE: _____________________
BY: ________________________
ATTORNEY-IN-FACT
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APPROVED AND ACCEPTED this _____ day of __________, 19_____.
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CITY OF ALAMO HEIGHTS
BY: _____________________
TITLE: __________________
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APPROVED AS TO FORM: __________
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CITY ATTORNEY
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(1965 Code, app. B, attach. C)
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SUPPLEMENTARY APPLICATION, BUILDING OR STRUCTURE IN FLOOD HAZARD
AREA
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(To Accompany Application for Building Permit)
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City or Town __________ County __________
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Location _______________
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Intended Use _____Value Of Improvement $_____
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Type of Construction _____ No. of Stories _____
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Owner _____ Address _____
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Exist. Ground Elev. _____ MSL; Fin. Ground Elev. _____ MSL;
Reg. Flood Datum Elev. at Site _____ MSL; RFD Velocity _____ Ft./Sec.
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_____ Floor Elev. _____ MSL: Proposed Use _____; Floor Elev.
_____ MSL; Proposed Use _____
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_____ Floor Elev. _____ MSL: Proposed Use _____; Floor Elev.
_____ MSL; Proposed Use _____
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Maximum Loading on Walls:
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Hydrostatic (Uplift) Pressure on Floor Slabs
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Non-Flood Load _____ PSF
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(Maximum)________PSF
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Hydrostatic Load _____ PSF
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Foundation Type(s) ____________
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Hydrodynamic Load _____ PSF
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Lowest Footer Elev. (Bottom) _____ MSL
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Impact Load _____ PSF
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Sewage Disposal: ___ Septic Tank ___ Pub.
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Total Flood Load _____ PSF
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Syst., ___ Other (Explain)
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Potable Water: _____ Individual Well _____ Pub.
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Syst., _____ Other (Explain)
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Exterior Wall Construction Type(s):
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Floor Construction Type(s):
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Above _____ Floor _____ _____Floor _____
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Above _____ Floor _____ _____Floor _____
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Above _____ Floor _____ _____Floor _____
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Above _____ Floor _____ _____Floor _____
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Types of Waterproofing _____
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Type(s) of Joints: Walls _____ Floors _____; Waterstops/Seals
(Types): Walls _____ Floor _____
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Sump Location _____ Sump Type _____
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All Tanks and/or Buoyant Equipment Are _____ Are Not _____Anchored
to Prevent Flotation
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Alternate Power Source Is _____Is Not _____Provided For Emergency
Operation of Sump Pump
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Sanitary, Drainage & Water Supply Facilities Are _____ Are
Not _____ Protected From Contamination & Back Flow by Flood Water
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Retaining Wall(s) Are _____Are Not _____Used to Protect Building/Structure
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Intentional Flooding Is _____ Is Not _____Planned For This Building/Structure
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Temporary And/Or Emergency Flood Proofing Is _____ Is Not _____
Planned For This Building/Structure
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Building Structure Is _____ Is Not _____Protected Against Erosion
By Flood Flows
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Site Is _____Is Not _____Protected Against Erosion By Flood
Flows
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Classification Of Building/Structure: FP _____, Primary _____
Secondary _____ Flood Hazard Area.
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SPACES: List below all spaces of the building or structure below the Regulatory Flood Datum including their name, room number, and proposed flood-proofing classification (i.e. W1, W2, etc.). List all contents of each space (see Chapter 10 of the Flood-Proofing Regulations). Mark all items which are to be either protected contingently or removed to safe refuge upon receipt of flood warning with an asterisk (*); all such items must be mentioned in the Owner's Contingency Plan. Attach additional sheets if necessary.
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The applicant hereby certifies that the above information is
correct and that the plans submitted herewith conform to those submitted
for occupancy permit application. The applicant agrees to comply with
the provisions of the Zoning Ordinance, the Building Code and all
other laws and ordinances affecting the construction and occupancy
of this proposed building.
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Signature Of Architect/Engineer
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Address _____________________
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The undersigned will supervise the construction of the work
above.
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_______________________
Signature
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SEAL
Date
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Title ____________________
Address _________________
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_______________________
(Signature)
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Clerk
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APPROVED FOR COMPLIANCE WITH BUILDING CODE
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Date __________
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(1965 Code, app. B, attach. D)
