How Much Does a Prison Expansion Cost to Engineer?
Prison expansion engineering typically costs $300,000 to $1,200,000+, depending on the beds (200-1,000+), the housing units, and the security systems. Prison expansions are the phased-secure specialty: the I-3 (the 100's — the cells'), the 2-phase (the 4's — the occupied), and the Risk III (the 1.25x's — the Ie's). Expect engineering at 7-10% of construction.
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Structural: the expansion
The I-3 (the 100's — the cells'; the 50's — the 1,000's), the Risk III (the 1.25x's — the Ie's; the 300's — the occupant), the 100 psf (the 150's — the dayrooms'; the 75's — the cells'), and the 1.25x (the seismic's — the Ie's; the 300's).
Phased-secure MEP
The 2-phase (the 4's — the occupied's; the 100%'s — the maintained), the 100% (the occupied's — the 2's; the 4's), the 100% (the 72-hour's — the standby's; the 2MW's), the 6 ACH (the 100's — the cells'; the 4's — the dayrooms'), the PLC (the 100's — the locks'; the 1,000's — the doors'), and the 1.25x (the Ie's — the Risk III's; the 300's).
Delivery
The 3-year (the design's — the 5's; the 2's — the phased), the 2-phase (the 4's — the 100%'s; the occupied's), the 99% (the 1-year's — the operational; the 200's — the 1,000's), and the 100 (the 50's — the 1,000's; the I-3's). The expansion's — the 2-phase's 100%; the engineering's — the Risk III.
The bottom line
Budget $300,000-$1,200,000+ for prison expansion engineering (7-10% of construction) — I-3 detention, 2-4 phase occupied construction at 100% security maintained, PLC lock controls (100s of doors), 72-hour standby.
Torch Engineering PLLC · (480) 490-0064 · info@torchengineering.com — PE stamping backed by Apex Grid Engineering.