Bldg 25 Architectural 1.pdf
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- Y1DA--PN: 636A6-26-201, Patient Ceiling Lifts Install & Testing (DM) AP: 36C263-26-AP-1431
- Solicitation number
- 36C26326R0059
About this file
This document is a submittal transmittal and associated engineering calculations for a patient lift support system installation at the VA Des Moines Health Care System's CLC Cottage facility, located at 1601 San Pedro SE, Albuquerque, NM 87108. The project is designated CLC Cottages (Project No. 636-123, Contract No. 120000), with specification section 120000 covering Lift Supports Barrier Free. The submittal was transmitted by Covenant Construction Services representative Matt Patet on June 17, 2020, for Designer Danyelle Russell's review and approval.
The engineering calculations document (PEC Job No. 200886) provides structural analysis for the lift system hanger supports, lateral bracing, and framing attachments designed by Providence Engineering Corp. The system supports a 1,000-pound patient lift capacity with a 1.25 safety factor (1,250-pound test load), plus 50 pounds of system self-weight. Design calculations verify compliance with the 2018 International Building Code, ASCE 7-16 seismic standards, and AISI S100-16 cold-formed steel specifications for the Des Moines location (Seismic Design Category C). Key components include 1/2-inch diameter threaded hanger rods, P5500 and P5501 Unistrut channel framing members, P1000 lateral brace channels with P1026 angle connections, and field-installed fasteners. The calculations demonstrate that all structural members, connections, and attachment methods satisfy allowable stress design requirements under gravity and seismic loading conditions, with maximum hanger rod spacing of 3.95 feet and maximum moment anchor spacing of 25 to 67 inches depending on Unistrut span configuration.
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TO:
DATE:
PROJECT TITLE:
PROJECT NO: CONTRACT NO:
SPECIFICATION SECTION NO: [ONLY ONE SPEC SECTION PER SHEET]
Dwg.
No.
Cys.
Subm.
Action Taken
Cys.
Rtnd.
I certify that I have reviewed in detail the equipment and materials covered by this transmittal and that they are in strict conformance with the contract drawings and specifications unless otherwise checked above. Discrepancies are noted on the reverse of this sheet.
SIGNATURE CONTRACTING FIRM
The following action is recommended on the noted submittals:
SIGNATURE A/E FIRM:
The above submittals are returned with action as designated above in accordance with the following legend:
A. Approved B. Approved subject to corrections noted on submittal data and/or comments on reverse of this sheet C. Disapproved, resubmit promptly (see comments on reverse side of this sheet).
DATE:
Spec'n Paragraph
SUBMITTAL TRANSMITTAL
Subm. No.
Manufacturer Deviated
Fm Spec Items Submitted
APPROVING OFFICIAL:
SUBMITTAL NO:
ACTION: DATE:
THIS SPACE FOR APPROVING AUTHORITY
THIS SPACE FOR A/E ONLY
Danyelle Russell Des Moines VA Health Care System 6/17/2020 1601 san Pedro SE Albuquerque, NM 87108
CLC Cottages 636-123
120000
120000-012 Lift Supports Barrier Free Digital
Matt Patet Covenant Construction Services
BARRIER FREE LIFTS INC.
VA DES MOINES
CLC COTTAGE
2/28/2020
REVISED ROOM 2512 TO 1,000# LIFT
4/29/2020
By Matt Patet at 2:44 pm, Jun 17, 2020
= brace locations. Can be switched to opposite side of rails as needed from site conflicts
This plan is meant to show the general location of the patient lift system. Exact location and spacing of attachments to be field determined. Maximum spacing of hanger rod supports to be maintained based on Barrier Free Lift's span chart for the given rail and motor being installed in each room.
This plan is meant to show the general location of the patient lift system. Exact location and spacing of attachments to be field determined. Maximum spacing of hanger rod supports to be maintained based
This plan is meant to show the general location of the patient lift system. Exact location and spacing of attachments to be field determined. Maximum spacing of hanger rod supports to be maintained based
This plan is meant to show the general location of the patient lift system. Exact location and spacing of attachments to be field determined. Maximum spacing of hanger rod supports to be maintained based
This plan is meant to show the general location of the patient lift system. Exact location and spacing of attachments to be field determined. Maximum spacing of hanger rod supports to be maintained based
This plan is meant to show the general location of the patient lift system. Exact location and spacing of attachments to be field determined. Maximum spacing of hanger rod supports to be maintained based
This plan is meant to show the general location of the patient lift system. Exact location and spacing of attachments to be field determined. Maximum spacing of hanger rod supports to be maintained based
This plan is meant to show the general location of the patient lift system. Exact location and spacing of attachments to be field determined. Maximum spacing of hanger rod supports to be maintained based
This plan is meant to show the general location of the patient lift system. Exact location and spacing of attachments to be field determined. Maximum spacing of hanger rod supports to be maintained based
This plan is meant to show the general location of the patient lift system. Exact location and spacing of attachments to be field determined. Maximum spacing of hanger rod supports to be maintained based
This plan is meant to show the general location of the patient lift system. Exact location and spacing of attachments to be field determined. Maximum spacing of hanger rod supports to be maintained based
This plan is meant to show the general location of the patient lift system. Exact location and spacing of attachments to be field determined. Maximum spacing of hanger rod supports to be maintained based
This plan is meant to show the general location of the patient lift system. Exact location and spacing of attachments to be field determined. Maximum spacing of hanger rod supports to be maintained based
Design Codes
Load Criteria
Gravity Loads:
= x = =
Live Load (seismic events) = = Live Load, L e
(for use with seismic Load Combinations)
= W p = =
W p = D + L e = =
Lateral Loads: (refer to Seismic Load sheets)
= W p = =
Load Combinations
Strut Framing Specification
Equation 16-13 1.0D+0.525E+0.75L 429 lbs
Equation 16-16 0.6D+0.7E 35 lbs
Equation 16-8
A S
D
1.0D 50 lbs
Equation 16-9 1.0D+1.0L 1,300 lbs
Equation 16-12 1.0D+0.7E 55 lbs
Calculations and loading criteria for strut systems and components are based on Unistrut 1-5/8" Channel
Framing system per the 2015 Unistrut General Engineering Catalog, Number 17 by Atkore International.
Controls for non-seismic analysis
2018 IBC Combination Gravity Load (D , L , E vertical )
Equation 16-1
L R
F D
1.4D 70 lbs
52 lbs
Equation 16-2 1.2D+1.6L 2,060 lbs
Equation 16-5 1.2D+1.0E+0.5L 317 lbs
550 lbs Component Operating Weight
Section 13.3.1.2 Lateral Seismic Design Force 0.0780 43 lbs Seismic Load, E lateral
Controls for seismic analysis Equation 16-7 0.9D+1.0E
ASCE 7-16
Section 13.3.1 Vertical Seismic Design Force 0.0130 ± 7 lbs Seismic Load, E vertical
Under typical conditions, the system will be short-term loaded to no more than 500lbs Live Load plus self-weight of the system. If a large seismic event occurs during the 1250lbs load test, a patient lift failure will not result in human life safety concerns. Limit gravity Live Load to 500lbs for lateral force analysis.
500 lbs
System Lifting Capacity 1,000 lbs 1.25 1,250 lbs Live Load, L
Patient Lifts are field-tested with a point load of 1250lbs per the manufacturer's requirements.
This load is the result of the Live Load lifting capacity of the hoist with an additional Safety Factor = 1.25
System Self Weight 50 lbs Dead Load, D
Patient Lift System (1/2" Diameter Hanger Rod Attachment)
ACI 318-14
International Building Code: 2018 Edition
ASCE 7-16
AISI S100-16
Referenced
Standard
CLIENT: Barrier Free Lifts 10 Eisenhower Boulevard, Lancaster, PA 17603
PROJECT: VA Des Moines CLC CottagePhone: 717-509-7000
DATE: 2020-05-27 BY: JGF
JOB NO: 200886
PAGE: OF:2
Hazards by Location
Search Information
Address: 3600 30th St, Des Moines, IA 50310, USA
Coordinates: 41.62768619999999, -93.66056479999999
Elevation: 906 ft
Timestamp: 2020-05-27T15:51:31.449Z
Hazard Type: Seismic
Reference Document: ASCE7-16
Risk Category: IV
Site Class: D
MCER Horizontal Response Spectrum Design Horizontal Response Spectrum
Basic Parameters
Name Value Description
SS 0.061 MCER ground motion (period=0.2s)
S1 0.051 MCER ground motion (period=1.0s)
SMS 0.098 Site-modified spectral acceleration value
SM1 0.124 Site-modified spectral acceleration value
SDS 0.065 Numeric seismic design value at 0.2s SA
SD1 0.082 Numeric seismic design value at 1.0s SA
Additional Information
Name Value Description
SDC C Seismic design category
Fa 1.6 Site amplification factor at 0.2s
Fv 2.4 Site amplification factor at 1.0s
CRS 0.939 Coefficient of risk (0.2s)
CR1 0.878 Coefficient of risk (1.0s)
PGA 0.029 MCEG peak ground acceleration
FPGA 1.6 Site amplification factor at PGA
PGAM 0.047 Site modified peak ground acceleration
TL 12 Long-period transition period (s)
SsRT 0.061 Probabilistic risk-targeted ground motion (0.2s)
SsUH 0.065 Factored uniform-hazard spectral acceleration (2% probability of exceedance in 50 years)
SsD 1.5 Factored deterministic acceleration value (0.2s)
S1RT 0.051 Probabilistic risk-targeted ground motion (1.0s)
S1UH 0.059 Factored uniform-hazard spectral acceleration (2% probability of exceedance in 50 years)
S1D 0.6 Factored deterministic acceleration value (1.0s)
PGAd 0.5 Factored deterministic acceleration value (PGA)
The results indicated here DO NOT reflect any state or local amendments to the values or any delineation lines made during the building code adoption process. Users should confirm any output obtained from this tool with the local Authority Having Jurisdiction before proceeding with design.
Disclaimer
906 ft
Map data ©2020 GoogleReport a map error
0 2 4 6 8 10 12 Period (s)
0.00
0.02
0.04
0.06
0.08
0.10
0.12
Sa(g)
0 2 4 6 8 10 12 Period (s)
0.00
0.02
0.04
0.06
0.08
Sa(g)
Existing Building Seismic Design Category
S S =
S 1 =
F a =
F v =
S MS = =
S M1 = =
S DS = =
S D1 = =
Seismic Design Category: C
Table 11.6-1 SDC (based on S DS ) : A
Table 11.6-2 SDC (based on S D1 ) : C
Table 1.5-1 Risk Category: IV
Equation 11.4-3 2/3S SMS 0.0651g
Equation 11.4-4 2/3S M1 0.0816g
Equation 11.4-1 F a S S 0.0976g
Equation 11.4-2 F v S 1 0.1224g
Table 11.4-1 1.60
Table 11.4-2 2.40
Figure 22-1 0.061g
Figure 22-2 0.051g
Chapter 20 Soil Site Class: D
Table 20.3-1 Description: Stiff Soil (default)
Location:
3600 30th Street
Des Moines, IA 50310
ASCE 7-16
PAGE: OF:
DATE: 2020-05-27 BY: JGF
JOB NO: 200886
Referenced
Standard
CLIENT: Barrier Free Lifts 10 Eisenhower Boulevard, Lancaster, PA 17603
PROJECT: VA Des Moines CLC CottagePhone: 717-509-7000
Hazards by Location
Search Information
Address: 3600 30th St, Des Moines, IA 50310, USA
Coordinates: 41.62768619999999, -93.66056479999999
Elevation: 906 ft
Timestamp: 2020-05-19T15:31:52.429Z
Hazard Type: Seismic
Reference Document: ASCE7-16
Risk Category: II
Site Class: D
MCER Horizontal Response Spectrum Design Horizontal Response Spectrum
Basic Parameters
Name Value Description
SS 0.061 MCER ground motion (period=0.2s)
S1 0.051 MCER ground motion (period=1.0s)
SMS 0.098 Site-modified spectral acceleration value
SM1 0.124 Site-modified spectral acceleration value
SDS 0.065 Numeric seismic design value at 0.2s SA
SD1 0.082 Numeric seismic design value at 1.0s SA
Additional Information
Name Value Description
SDC B Seismic design category
Fa 1.6 Site amplification factor at 0.2s
Fv 2.4 Site amplification factor at 1.0s
CRS 0.939 Coefficient of risk (0.2s)
CR1 0.878 Coefficient of risk (1.0s)
PGA 0.029 MCEG peak ground acceleration
FPGA 1.6 Site amplification factor at PGA
PGAM 0.047 Site modified peak ground acceleration
TL 12 Long-period transition period (s)
SsRT 0.061 Probabilistic risk-targeted ground motion (0.2s)
SsUH 0.065 Factored uniform-hazard spectral acceleration (2% probability of exceedance in 50 years)
SsD 1.5 Factored deterministic acceleration value (0.2s)
S1RT 0.051 Probabilistic risk-targeted ground motion (1.0s)
S1UH 0.059 Factored uniform-hazard spectral acceleration (2% probability of exceedance in 50 years)
S1D 0.6 Factored deterministic acceleration value (1.0s)
PGAd 0.5 Factored deterministic acceleration value (PGA)
The results indicated here DO NOT reflect any state or local amendments to the values or any delineation lines made during the building code adoption process. Users should confirm any output obtained from this tool with the local Authority Having Jurisdiction before proceeding with design.
Disclaimer
906 ft
Map data ©2020 GoogleReport a map error
0 2 4 6 8 10 12 Period (s)
0.00
0.02
0.04
0.06
0.08
0.10
0.12
Sa(g)
0 2 4 6 8 10 12 Period (s)
0.00
0.02
0.04
0.06
0.08
Sa(g)
Component Seismic Design Loads
S S =
S 1 =
F a =
F v =
S MS = =
S M1 = =
S DS = =
S D1 = = a p =
R p =
Attachment height, z =
Average roof height, h = z /h =
W p = =
2z h
= 1.6S DS I P W P =
= 0.3S DS I P W P =
= For design, use Fp = 100 100 lbs for overal lateral stability
Anchorage into concrete:
For SDC C through SDC F:
Component Risk Category:
Building Seismic Design Category:
§17.2.3.4.3(d)
Section 13.3.1.2 F P(vertical) ±0.2S DS W p 7.2 lbs
F P(use) 42.9 lbs
Equation 13.3-2 F P(max) 57.2 lbs
Equation 13.3-3 F P(min)
Equation 13.3-1 F P = 0.4a p S DS W p
(1 + )
§17.2.3.4.4 Apply additional 0.75 factor to anchor design strength (except for steel strength of anchor).
§17.2.3.4.3(c)& Increase seismic loads by Ω o = 2.5 (for appendages and ornamentations)
ACI 318-14
= 42.9 lbs (R p /I p )
10.7 lbs
Table 13.5-1 2.50
Section 13.3.1 1.000 ≤ 1.0 use z/h = 1.00
DL + LL (seismic events) 550
Table 13.5-1 2.50 All
Section 13.1.3 Importance Factor, I e : 1
Architectural Component: Appendages and ornamentations
Section 13.3.1 30.00ft Note: Assumed 3 stories. Installs on multiple levels, unity is conservative Section 13.3.1 30.00ft
B
Table 1.5-1 II
Equation 11.4-3 2/3S SMS 0.0650g
Equation 11.4-4 2/3S M1 0.0820g
Equation 11.4-1 F a S S 0.0980g
Equation 11.4-2 F v S 1 0.1240g
Table 11.4-1 1.60
Table 11.4-2 2.40
Figure 22-1 0.061g
Figure 22-2 0.051g
Chapter 20 Soil Site Class: D
Table 20.3-1 Description: Stiff Soil (default)
Location:
3600 30th Street
Des Moines, IA 50310
ASCE 7-16
PAGE: OF:
DATE: 2020-05-27 BY: JGF
JOB NO: 200886
Referenced
Standard
CLIENT: Barrier Free Lifts 10 Eisenhower Boulevard, Lancaster, PA 17603
PROJECT: VA Des Moines CLC CottagePhone: 717-509-7000
Lateral Load: Assembly Interaction
Load Case (A): Load Case (B):
Lateral Load acts in the opposite direction of the brace Lateral Load acts in the same direction of the brace
ϴ = ϴ =
Result: Result:
Brace acts as a tension member Brace acts as a compression member
Hanger rod acts as a compression member Hanger rod acts as a tension member
- Check the hanger rod for (4) possible conditions:
Pure tension due to the gravity loads: test load and system self-weight
Hanger rod compression due to the load application shown in Load Case (A)
Hanger rod tension due to load application as shown in Load Case (B)
- As depicted in Load Case (B), check the maximum allowable compression force on the lateral brace channel strut, based on the system geometry, and compare to the maximum applied compression force on the brace, F brace . The lateral brace channel strut as a tension member as depicted in Load Case (A) is O.K. by inspection.
Fbrace
Condition #1:
Condition #2:
Condition #3:
Condition #4:
Bending force in the hanger rod, due eccentricity distance between the lateral force applied at the lift attachment and lateral brace attachment
Analysis procedure at the lift attachment location, as depicted above
Hanger Rod
Tension
Hanger Rod
Compression
Fp
30.00° min.
60.00° max.
Fp
Fbrace
30.00° min.
60.00° max.
CLIENT: Barrier Free Lifts 10 Eisenhower Boulevard, Lancaster, PA 17603
PROJECT: VA Des Moines CLC CottagePhone: 717-509-7000
PAGE: OF:
DATE: 2020-05-27 BY: JGF
JOB NO: 200886
Unistrut Lateral Brace: Axial Load
Channel and Load Information:
Maximum column loading values interpolated between tabulated values per Unistrut General Engineering Catalog Ed. No 17, page 25
T
Use 0.85 reduction factor for T-Series Beams
ϴ =
Braced Lengths:
K = 1.0 for pin-pin connected members
Attachment via channel nut:
Pullout resistance:
Hanger Rod
Compression
Fbrace
30.00° min.
60.00° max.
Fp
10 Eisenhower Boulevard, Lancaster, PA 17603 PROJECT: VA Des Moines CLC CottagePhone: 717-509-7000 per ASD load combinations
Fp = 70.00 lbs Controlling Fp = 0.7*stability force
DATE: 5/27/2020 BY: JGF
JOB NO: 200886
PAGE: OF:
CLIENT: Barrier Free Lifts
Lx = 4.000 ft
Channel: P1000
Force on Brace = Fp/cosϴ
0.7E = 0.7Fph = 30.03 lb
Use minimum of 100 lbs (Strength Level) for stability
Fbrace = 140.0 lbs Fbrace = 80.8 lbs Tabulated Values for P1000 Adjusted for P1000T
Ly = 4.000 ft
Brace Angle, ϴ = 45.00° 15.00°
ϴ1 = 60.00° ϴ2 = 30.00°
Longest Practical Brace
Length = 120"
K = 1.0 Slot Face K = 1.0
Allowable = 2149.4 lbs Allowable = 1419.5 lbs 24" 3550 8770
Lb = 55" min. Lb = 96" max. L Slot Face
5431.5
[Design Satisfactory] [Design Satisfactory] 48" 2770 4690 2354.5 3986.5
3017.5 7454.5
Fallow Fapplied Fallow Fapplied 36" 3190 6390 2711.5
60" 2380 3630 2023 3085.5
72" 2080 2960 1768 2516
1793.5
108" 1510 1810 1283.5 1538.5 for P1000T Per Unistrut General Engineering
Catalog, Ed. No. 17 - pg. 72 84" 1860 2480 1581 2108
96" 1670 2110 1419.5
Minimum channel nut size required: 1/2" - 13
600 lbs 144" 1150 0 977.5 0
Resistance to slip: 300 lbs 120" 1380 0 1173
96.0" 1,670 lbs 2,110 lbs 1,420 lbs 1,794 lbs
[Design Satisfactory] 55" 2,529 lbs 4,034 lbs 2,149 lbs 3,429 lbs
Fallow Fapplied 168" 0 0 0 root diameter via AISC 14th Ed. Table 7-17
Allowable Pullout Strength
Allowable Pullout Strength
P applied
= 3.536 k Rupture Controls
Papplied = 1300 lbs ≤ [Design Satisfactory]3536 lbs
= 2000 lbs.
Required Unistrut Channel Nut: 1/2" - 13
Allowable Strength ≥ Applied Force
Allowable Strength ## Applied Force ∴ #N/A
Connection of Hanger Rod to
Required Unistrut Channel Nut: 1/2" - 13
#N/A
Connection of Hanger Rod to P5500T Strut
DATE: 5/27/2020 BY: JGF
JOB NO: 200886
CLIENT: Barrier Free Lifts
PROJECT: VA Des Moines CLC Cottage
PAGE: OF:
Per AISC 14th Ed. 16.1-26, ASD
10 Eisenhower Boulevard, Lancaster, PA 17603
Phone: 717-509-7000
Diameter Threaded Hanger Rod in Tension
Low Carbon Steel
1/2"
Fy =
Fu = 52 ksi
32 ksi
Pn/Ω =
Pn/Ω =
Per Unistrut General Engineering Catalog, No. 17 - pg. 72
[Design Satisfactory]
32 ksi (π)(0.5)²/(4*1.67) = 3.762 k Yielding Controls
FuAe/Ω = 52 ksi (0.136 in²/2.00)
FyAg/Ω =
1/2'' Diameter Threaded Rod
Mn =
Maximum Cantilever Length of Rod from Brace
218.25 = 70*L
AISC 14th Ed. Table 7-17
S = πd³/32 =
Hanger Rod in Bending
Min Root Area =
Min Root Dia =
.14 in²
.42 in
BY: JGF
JOB NO: 200886
CLIENT: Barrier Free Lifts
VA Des Moines CLC Cottage
PAGE:
Phone: 717-509-7000
Mn/Ω =
OF:
Use 3'' maximum distance to lateral brace
Fy =
Mn/Ω
3'' max.
Per ASCE Load Combinations, multiply seismic load by 0.7: P design 70 lbs
0.01209 in³
Controls
0.3645(1000)/(1.67) = 218.251 in-lb
FyZ ≤ 1.6 FyS
Z = d³/6 =
0.00712 in³
32 ksi
32(0.0121) ≤ 1.6 (32)(0.0071)
= PL
0.387 in-k 0.364 in-k
3.118'' = Lmax
10 Eisenhower Boulevard, Lancaster, PA 17603
DATE:
Low Carbon Steel
PROJECT:
5/27/2020
Seismic force = 43 lbs
Minimum lateral force required for stability = 70 lbs
Per AISC 14th Ed: 16.1-26
At Braced Location:
= ϴ =
At Typical Location:
Compare to Net Compression Load, above
Tabulated values:
Tension on Hanger Rod due to Seismic -
O.K. by Inspection
Compression on Hanger Rod due to
Seismic - Limit L to 3.95ft max
22.9 lbs Net Tension
98.4 lbs Net Compression
VA Des Moines CLC Cottage
OF:
10 Eisenhower Boulevard, Lancaster, PA 17603
Phone: 717-509-7000
3.96 1.21
Pn/Ω = 98.808 lbs
455.80 1.38
0.53
1.18
4.74
= 1.20822 ksi π²E/(KL/r)²
0.877 Fe
= 0.00192 ksi when KL/r > 4.71(E/Fy)
0.5 , Fcr = 0.877Fe ; otherwise, Fcr = 0.658Fy/FeFy
JGF
CLIENT: Barrier Free Lifts
PROJECT:
Applied Forces to Hanger Rod
121.2+7.2 = 128.39 lbs
Net Load on Hanger Rod = 0.6DL - Cbrace - Fpv =
0.7Fph/cos(60.00°)
Fbrace*cos(30.00°)
140.00 lbs
121.24 lbs due to brace component
Fbrace
30° min.
60° max.
Fp
Maximum L, based on Euler Force for 0.5'' Dia Low Carbon Steel Hanger Rod
= 1.3777 ksi
(0.658 Fy/Fe)Fy
KL/r = KL/r > 200, but O.K. by inspection
Fcr (ksi) Pn/Ω (lbs)
Pn = FcrAg = 165.01 lbs
3.96 ft
0.1043 in²
K =
C
L = rg =
4.42 k Yielding Controls
Net Load on Hanger Rod = 0.6DL - Fpv =
Fbrace
Cbrace =
Cbrace + Fpv =
200886JOB NO:
43.04
96.83
387.32
6.00
4.00
2.00
690.65 0.60
1.35
5.40
98.81
460.43
230.22
L (ft) KL/r Fe (ksi)
5/27/2020 BY:
Fcr =
= 141.79
Per AISC 14th Ed: 16.1-33
Fe =
Fcr =
4.71 (E/Fy)
0.5455.80 >
Pn/Ω = FyAg/1.67 =
Pn/Ω = FuAe/2.00 =
Axial Tension of Hanger Rod at Braced Location
Yield:
3.76 k
Rupture:
PAGE:
DATE:
Reduce allowable moment by 15% for T Series Beam, per Unistrut Engineering Catalog, 17th Ed. - pg 25-59
Reduction Factor for Unbraced Length is interpolated from pg 62
M applied = M point load + M self weight
Check Deflection at L = 25''
Decrease Moment of Inertia by 15% for T Series Beam, per Unistrut Engineering Catalog, 17th Ed. - pg 25-59
Reaction at Each End of Unistrut
R R R
P
9,820 in-lb
10 Eisenhower Boulevard, Lancaster, PA 17603
Phone: 717-509-7000
Reaction = R = 1/2P + wL/2 652.6 lbs
R
P
DATE: 5/27/2020 BY:
P5500
T Series
Unistrut Spanning Member
Worst case for channel bending - point load at midspan.
Treat Unistrut as simple-spanned
JGF
0.0694"
∆ self weight =
PL³
/ 48EI
5wL⁴
/ 384EI
M applied 8,141 in-lb M design
Allowable Moment:
OF:
JOB NO: 200886
CLIENT: Barrier Free Lifts
PROJECT: VA Des Moines CLC Cottage
2.470 plf
1,300 lbs
PAGE:
Weight:
Point Load:
Channel:
Type:
Determine Maximum Applied Moment to Unistrut
Applied Moment:
8,185 in-lb
8,185 in-lb
Reduce allowable moment by 0.98 based on unbraced length, per Unistrut Engineering Catalog, 17th Ed. - pg 62
M design
0.032888"
Max anchor spacing for M(applied) < M(design) = 25.00" o.c.
∆ concentrated =
M self weight =
M point load =
E = 29,000 ksi
L / 360 0.0694"
16.081 in-lb
8,125 in-lb wL 2 /8
PL/4
9,820 in-lb x 0.85 x 0.98
L / 360
Total Deflection: ∆ total = ∆ concentrated + ∆ self weight
∆ total 0.032969"
∆ max =
0.000081"
Allow maximum deflection of L / 360
I = 0.522 in⁴ x 0.85 0.4437 in⁴
Reduce allowable moment by 15% for T Series Beam, per Unistrut Engineering Catalog, 17th Ed. - pg 25-59
Reduction Factor for Unbraced Length is interpolated from pg 62
M applied = M point load + M self weight
Check Deflection at L = 67''
Decrease Moment of Inertia by 15% for T Series Beam, per Unistrut Engineering Catalog, 17th Ed. - pg 25-59
Reaction at Each End of Unistrut
R R R
P P
R
∆ total 0.119371" L / 360 0.1861"
Reaction = R = 1/2P + wL/2 663.8 lbs
Total Deflection: ∆ total = ∆ concentrated + ∆ self weight
∆ concentrated =
PL³
/ 48EI 0.117809"
∆ self weight = 5wL⁴
/ 384EI 0.001562"
I = 2.805 in⁴ x 0.85 2.3843 in⁴
E = 29,000 ksi
∆ max = L / 360 0.1861"
M applied 22,006 in-lb M design 22,013 in-lb
Allow maximum deflection of L / 360
Applied Moment:
M self weight = wL 2 /8 230.996 in-lb
M point load = PL/4 21,775 in-lb
Determine Maximum Applied Moment to Unistrut
Max anchor spacing for M(applied) < M(design) = 67.00" o.c.
Allowable Moment: 28,940 in-lb
Reduce allowable moment by 0.89 based on unbraced length, per Unistrut Engineering Catalog, 17th Ed. - pg 62
M design 28,940 in-lb x 0.85 x 0.89 22,013 in-lb
Channel: P5501 Weight: 4.940 plf Worst case for channel bending - point load at midspan.
Type: T Series Point Load: 1,300 lbs Treat Unistrut as simple-spanned
PAGE: OF:
Unistrut Support Fastened to Steel Beam
CLIENT: Barrier Free Lifts 10 Eisenhower Boulevard, Lancaster, PA 17603
PROJECT: VA Des Moines CLC CottagePhone: 717-509-7000
DATE: 6/1/2020 BY: JGF
JOB NO: 200886
MAX SPAN = 53IN O/C, PER SF102 - ATTIC FRAMING PLAN
DATE: BY:
JOB NO:
CLIENT:
PROJECT:
PAGE: OF:
P1026 at Threaded Rod: Weak Axis Bending of Horizontal Leg of P1026 Angle for Vertical Component of
Brace Force and Torsion of Horizontal Leg of P1026 Angle for Horizontal Component of Brace Force
Weak Axis Bending of Horizontal Leg of P1026:
121.2 lbs (assuming maximum 60° angle from horizontal) e = 2 in - 0.8125 in = 1.1875 in.
M = (0.7)Ev(e)= 144.0 in - lbs
Z = (1.625 in)x(0.25 in)2/4 = 0.0254 in3 f = M/Z = 5,670 psi
Torsion of Horizontal Leg of P1026:
Horizontal Component, Eh = 100 lbs Minimum for Stability Controls
ASD → (0.7)Eh = 70 lbs e = 2 in - 0.8125 in = 1.1875 in.
T = (0.7)Eh(e)= 83.125 in-lbs τmax = T/[(c1)(a)(b)2] a = 1.625 in.
b = 0.25 in.
b/a = 0.153846 c1 = (1/3)[1 - (0.630b/a)] 0.3010 τmax = 2718.91 psi
Total Stress:
fmax = 6,289 < Fy/Ω 19,760 psi OK
Connection of Brace to Unistrut P1026 Angle at Unistrut Strut
1/2"-13 Channel Nut → Resistance to Slip = 1,500 lb > 100 lb ∴ OK
ASD → (0.7)Ev = Vertical Component =
5/27/2020 JGF
200886
10 Eisenhower Boulevard, Lancaster, PA 17603 Barrier Free Lifts
Phone: 717-509-7000 VA Des Moines CLC Cottage
CLIENT:
PROJECT:
PAGE: OF:
Biaxial Bending of Strut at Brace Connection
L = 53 inches Fph = 100 lbs Angle of Brace 15° min
Fpv = 121.2 lbs 60° max
0.7E
15° F = Fph/Cos(15) 103.5 lbs 72.5 lbs
Fph = F*Cos(15) 100.0 lbs 70 lbs
Fpv = F*Sin(15) 26.8 lbs 18.8 lbs
60° F = Fph/Cos(60) 200.0 lbs 140 lbs
Fph = F*Cos(60) 100.0 lbs 70 lbs
Fpv = F*Sin(60) 173.2 lbs 121 lbs
Strong Axis Bending
15° Mx = Fpv(L)/4 248.5 in-lb
60° Mx = Fpv(L)/4 1606 in-lb
Weak Axis Bending
15° My = Fph(L)/4 927.5 in-lb
60° My = Fph(L)/4 927.5 in-lb
P5000 Mnx/Ω = 15770 in-lb
Type: T Series Mny/Ω = 13405 in-lb
Reduction Factor = 0.85 For "T" Series
0.55 Conservative For 53" UnbracedLength
Mnx/Ω = 7372.5 in-lb
Mny/Ω = 6266.7 in-lb
Interaction
15° (Mx / Mnx/Ω) + (My / Mny/Ω) 0.18 OK
60° (Mx / Mnx/Ω) + (My / Mny/Ω) 0.37 OK
10 Eisenhower Boulevard, Lancaster, PA 17603 Barrier Free Lifts
Phone: 717-509-7000 VA Des Moines CLC Cottage
6/1/2020 JGF
200886
CLIENT:
PROJECT:
PAGE: OF:
Top Leg of P1026 in Bending
T = 140 lb (based on minimum 30 degree angle of brace from vertical)
M = (140 lb)(2 in - 0.8125 in) = 167in-lb
Z = [(1.625")(0.25")2]/4 = 0.02539 in3
Mn/Ω = FyZ/Ω = (33,000 psi)(0.02539 in3)/1.67 = 501 in-lb > 167 in-lb ∴ OK
Check prying:
b' = 1.4375" - (0.25"/2) = 1.3125" (conservative) p = 1.625" tmin = {(6.68)(T)(b')/[(p)(Fu)]}0.5 = {(6.68)(0.167 kips)(1.3125")/[(1.625")(52 ksi)]}0.5 = 0.12" < 0.25"
∴ No Prying
5/27/2020 JGF
200886
10 Eisenhower Boulevard, Lancaster, PA 17603 Barrier Free Lifts
Phone: 717-509-7000 VA Des Moines CLC Cottage
CLIENT:
PAGE: OF:
PROJECT:
JOB NO:
DATE: BY:
72 West Pomfret Street, Carlisle, PA 17013
Phone: 717-243-9555
BARRIER FREE LIFTS
VA DES MOINES CLC COTTAGE
JGF05/27/2020
200886
SHEAR STRENGTH OF SCREW LIMITED BY TILTING AND BEARING ON LIGHT GAUGE STEEL JOIST, THICKNESS = 0.035IN, E4.3
Fu = 45KSI, Fy = 33KSI
BEARING, Pns/Ω = 2.7dtFu/Ω = 2.7x0.31INx0.035INx45KSI/3.0 = 439LBS > 70LBS, EQN.E4.3.1-2
PULL OUT OF SCREW ON LIGHT GAUGE STEEL JOIST, PER TIR-A9-14, 10
USE: 5/16-12 (SPACED THREADS)
Tall = 1,295LBS, PER AAMA TIR-A9-14 TABLE 20.2
MINIMUM SAE GRADE 2 STEEL OR BETTER, Fu = 74KSI MIN.
MAX TENSION IN SCREW = 121.2LBS
Vall = 748LBS
MAX SHEAR IN SCREW = 70LBS
BRACE ATTACHMENT TO STRUCTURE: P1026 ANGLE THRU 1/2IN GYPSUM BOARD TO LIGHT GAUGE STEEL
BENDING IN 5/16-12 SCREW: Ø = 0.3125IN, Fy = 25KSI
S = πd³/32 = 0.003IN³
Fb = 25KSI/Ω=1.67 = 14.97KSI
Fb = M/S = Vx(L) 1/2IN THICK GYPSUM BOARD
V = (0.003IN³)x(14.97KSI)/(0.5IN)
Vall = 90LBS > 70 LBS, OK
Ø = 0.3125IN
CONNECTION CALCS PER NORTH AMERICAN COLD-FORMED STEEL SPECIFICATION AISI S100-16
TILTING, Pns/Ω = 4.2√(t³d)xFu/Ω = 4.2x√((0.035IN)³x0.31IN)x45KSI/3.0 = 230LBS > 70 LBS, EQN.E4.3.1-1 t1 = 0.25IN (P1026 ANGLE), t2 = 0.035IN (STEEL STUD) t1/t2 = 0.035IN/0.25IN = 0.14 < 1.0
CONNECTION GOVERNED BY MINIMUM BELOW
TENSION STRENGTH OF CONNECTION LIMITED BY PULL-OUT AND PULL-OVER E4.4
Pnot = 0.85tcdFu/Ω = 0.85x0.035INx0.3125INx45KSI/3 = 140LBS > 121.2LBS, OK
COMBINED SHEAR AND PULL OUT: EQN.J4.5.2-1a
Q/Pnv+ 0.71(T/Pnot) <= 1.10
70/230+ 0.71x(121.2/140) <= 1.10
0.92 < 1.10, OK
PULL OVER OF SCREW: dw = ASSUME 0.5IN, t1 = THICKNESS OF ANGLE = 0.25IN
Pnov = 1.5t1dwFu/Ω = 1.5x0.25INx0.5INx45KSI/3 = 2,820LBS > 121.2LBS, OK, NO CONCEN DUE TO THICKNESS OF ANGLE
COMBINED SHEAR AND TENSION ON SCREW: EQN.J4.5.3-1a
Q/Pnv+ 0.71(T/Pnot) <= 1.10
70/180+ (121.2/1295) <= 1.10
0.48 < 1.3, OK
P1026
1 7⁄8" (47.6)
(50.8) 2"
DF, EG, GR, HG
CLIENT:
PAGE: OF:
PROJECT:
JOB NO:
DATE: BY:
72 West Pomfret Street, Carlisle, PA 17013
Phone: 717-243-9555
BARRIER FREE LIFTS
VA DES MOINES CLC COTTAGE
JGF05/27/2020
200886
CONNECTION TO STEEL TRUSSES
USING LD2US-3 ATTACHMENT METHOD
FOR (2) - SCREWS MAXIMUM LOAD = 970LBS
TOTAL LOAD AT HANGER ROD = 1300LBS
MAX SPAN OF UNISTRUT = 24IN
MAX LOAD STEEL TRUSS DESIGNED FOR = 700LBS
DISTANCE FROM TRUSS TO HANGER ROD FOR MAX LOAD TO STEEL TRUSS TO NOT EXCEED 700LBS
DISTANCE = (1300LBS)x(12IN/24IN) = 650LBS
DISTANCE = (1300LBS)x(13IN/24IN) = 705LBS
THUS HANGER ROD MUST BE PLACED IN CENTER OF UNISTRUT FRAMING MEMBER
CONNECTION TO STEEL BEAM
Pall = 1000 LBS
Papp = 1300 LBS
BEAMS SPACED 53IN O/C MAX
MIN HANGER ROD DISTANCE FROM BEAM CONNECTION, L = 16IN
L = 1300LBSx(37/53) = 908LBS < 1000LBS, OKWt/100 pcs: 83 Lbs (37.6 kg)
P2867A
P2787
• For use with Beams up to 3⁄4" (19.1) Flanges and with Channels P5001 and P5501.
Design Load Each 1000 Lbs (4.45 kN) Use in Pairs Only
1⁄4" (6.4)
81⁄4"
3" (76.2)
7⁄8" (22.2)
3⁄8" Hex Nuts and "U" Bolt Included
(209.6)
Wt/100 pcs: 112 Lbs (50.8 kg)
EG GR HG
DF, EG, HG
LD2US-3
DETAIL NO.
STANDARD DETAILS
CATEGORY
DATE 9/2010
ULTRA-SPAN TRUSS BOTTOM CHORD
LOAD SUPPORT WITH UNISTRUT®
14515 N. Outer 40 Drive - Suite 110 Chesterfield, MO 63017
Phone: (866) 902-3447 Fax: (314) 434-5234 www.AegisMetalFraming.com
M E T A L F R A M I N G A division of MiTek
1. Load assumed placed at midspan of UniStrut
2. Design of UniStrut members and connection of load by others.
3. This details does not imply adequacy of trusses involved. Truss designs must include load.
Unistrut® to span between trusses designed by others
Unistrut® block Attach to truss chord with #10-16 T/3 as required see chart (TYP)
Load support designed by others
USC or USD chord
Pa
Maximum Load Pa (lbs) Supported by Bottom Chords
Bottom Chord Thickness (mil)
057 min
Screws block to chord
2 4
USC or USD chord
Unistrut® is a registered trademark or trademark of Unistrut Corporation
File details come from the government source that posted it. Updated .